{"Bibliographic":{"Title":"Studies to evaluate the effectiveness of extended-length screens at The Dalles Dam, 1994","Authors":"","Publication date":"1995","Publisher":""},"Administrative":{"Date created":"08-16-2023","Language":"English","Rights":"CC 0","Size":"0000076877"},"Pages":["SH157.85\n.F54S79\n1995\nStudies to evaluate\nthe effectiveness\nof extended-length screens\nat The Dalles Dam,\nCZAES\n1994\nby\nCoastal Zone and\nRandall F. Absolon, Dean A. Brege,\nEstuarine Studies\nBenjamin P. Sandford, and\nDivision\nDouglas B. Dey\nNorthwest Fisheries\nScience Center\nMay 1995\nNational Marine\nFisheries Service\nSeattle, Washington\nLibrary\nNorthwest Fisheries Science Center\n2725 Montlake Boulevard E.\nSeattle, WA 98112","NWFSCONS\nSTUDIES TO EVALUATE THE EFFECTIVENESS OF\nEXTENDED-LENGTH SCREENS AT THE DALLES DAM, 1994\nSH\n157,85\nby\n,F54\nRandall F. Absolon\nST9\nDean A. Brege\nBenjamin P. Sandford\nand\n1995\nDouglas B. Dey\nReport of Research\nFunded by\nU.S. Army Corps of Engineers\nPortland District\nDelivery Order E96930030\nand\nCoastal Zone and Estuarine Studies Division\nNorthwest Fisheries Science Center\nNational Marine Fisheries Service\nNational Oceanic and Atmospheric Administration\n2725 Montlake Boulevard East\nSeattle, Washington 98112-2097\nMay 1995","CONTENTS\nPage\nINTRODUCTION\n1\nOBJECTIVE 1:\nFISH GUIDANCE EFFICIENCY OF THE\nEXTENDED-LENGTH BAR SCREEN AND\nTHE EXTENDED-LENGTH TRAVELING SCREEN\n4\nApproach\n4\nResults and Discussion\n10\nYearling Fish\n10\nSubyearling Fish\n14\nOBJECTIVE 2: EFFECTS OF EXTENDED-LENGTH SCREENS ON\nFISH DESCALING RATES\n16\nApproach\n16\nResults and Discussion\n19\nYearling Fish\n19\nSubyearling Fish\n21\nOBJECTIVE 3: HORIZONTAL DISTRIBUTION OF JUVENILE SALMONIDS\nACROSS THE POWERHOUSE\n21\nApproach\n21\nResults and Discussion\n23\nYearling Fish\n23\nSubyearling Fish\n24\nCONCLUSIONS\n28\nACKNOWLEDGMENTS\n29\nREFERENCES\n31\nAPPENDIX TABLES\n33","INTRODUCTION\nThe Dalles Dam, at River Kilometer 308 (River Mile 192), is\noperated by the U.S. Army Corps of Engineers (COE) and is the\nsecond in a series of hydroelectric projects upstream from the\nmouth of the Columbia River. Completed in 1957, The Dalles Dam\nis equipped with 22 turbine units, an ice and trash sluiceway,\n20 spillbays, and a navigation lock (Fig. 1) . Unlike most other\nhydroelectric projects on the Columbia River, the powerhouse at\nThe Dalles Dam is oriented parallel to the river flow.\nThe COE has designed a juvenile fish bypass system for The\nDalles Dam similar to those in use at other COE Columbia and\nSnake River projects. In 1985 and 1986, the National Marine\nFisheries Service (NMFS) conducted research at The Dalles Dam to\ndetermine the potential fish guidance efficiency (FGE) for\nyearling chinook salmon (Oncorhynchus tshawytscha), sockeye\nsalmon (O. nerka), and steelhead (O. mykiss) attainable with\nstandard-length submersible traveling screens (STSs) (Monk et al.\n1986, 1987) Additionally, the vertical distribution of fish\nentering the turbine intake was measured to determine theoretical\nfish guidance efficiency (TFGE, an estimate of the percentage of\nfish theoretically guidable based upon hydraulic model studies\nand the vertical distribution of fish) .\nIn 1985, the FGE of STSs at The Dalles Dam ranged from 44 to\n55% for yearling chinook salmon, from 73 to 79% for steelhead,\nand from 8 to 14% (highest FGE obtained when the STS was lowered\n0.8 m) for subyearling chinook salmon. From vertical\ndistribution measurements, the TFGE of STSs was estimated to be","2\nOregon\nFigure 1. --Overview of The Dalles Dam with turbine units numbered.\n1\nN\nfishway\nEast\nSluiceway\nTailraco\nSluiceway\nexit\nFLOW\nbasin\nSpill\nWashington\nfishway\nNorth","3\n67% for yearling chinook salmon, 57% for sockeye salmon, 83% for\nsteelhead, and only 22% for subyearling chinook salmon. In 1986,\nlowering the STS again appeared to enhance FGE compared to an STS\nat standard elevation (56 vs. 44% for yearling chinook salmon)\n.\nAlthough FGE for all species was nearly 90% of the TFGE expected\nwith STSs, FGE was still well below a target level of 70%. These\ndata and the encouraging results from tests with extended-length\nscreens at McNary Dam in 1991 and 1992 (Brege et al. 1992,\nMcComas et al. 1993) suggested that FGE at The Dalles Dam might\nbe improved with longer screens.\nIn 1993, mean FGE at The Dalles Dam for yearling chinook\nsalmon was 73, 60, and 44% for the extended-length submersible\nbar screen (ESBS), extended-length submersible traveling screen\n(ESTS) and STS, respectively. Mean FGE for subyearling chinook\nsalmon was 59, 51, and 23% for the ESBS, ESTS, and STS,\nrespectively.\nSpecific research objectives at The Dalles Dam in 1994 were\n1) Determine the FGE of an ESBS and an ESTS with juvenile\nsalmonids (especially yearling and subyearling chinook\nsalmon) in the higher-flow turbine units at the east end of\nthe powerhouse during the spring and summer outmigration.\n2) Evaluate the effects of an ESBS and an ESTS on juvenile\nsalmonid descaling rates in the higher-flow turbine units at\nthe east end of the powerhouse.","4\n3) Evaluate the horizontal distribution of juvenile salmonids as\nthey enter the turbine units across the powerhouse.\nThe test schedule for the 1994 season is shown in Table 1.\nOBJECTIVE 1: FISH GUIDANCE EFFICIENCY OF THE\nEXTENDED-LENGTH BAR SCREEN AND THE EXTENDED-LENGTH TRAVELING\nSCREEN\nApproach\nThe methods for determining FGE were similar to those used\nin previous FGE studies with extended-length screens (Brege\net al. 1992, McComas et al. 1993) . Gatewell dip-net catches\nprovided estimates of the number of guided fish (Swan et al.\n1979) ; fyke-net catches provided estimates of the number of\nunguided fish (Fig. 2). . Fish guidance efficiency for each\nspecies was calculated as gatewell catch (guided fish) divided by\nthe total number of fish (guided plus unguided), by species,\npassing through the turbine intake during the test period:\nGW\nFGE =\nX 100%\nGW+FN\nwhere GW = gatewell catch\nFN = fyke-net catch\nGuided fish were confined to the bulkhead slot by a modified\nbalanced-flow vertical barrier screen (VBS) that separated the\nbulkhead slot from the gate slot (Fig. 2). . This VBS, originally","5\nTable 1. - - Test Schedule for the 1994 field season at The Dalles\nDam.\nTest\nPorosity of\nTest\nturbine\nFlowa\nGuidance\nTest\nperforated\nseries\nDates\nunit/slot\n(kcfs)\ndeviceb\ntype\nplate (%)\n1\n18-22\n18A\n16.3\nESBS\nDES\n25\nApril\n18B\n16.3\nESBS\nDES\n30\n18C\n16.3\nESBS\nDES\n35\n19B\n16.2\nESTS\nDES\n39\n19C\n16.2\nESTS\nDES\n44\n20A\n15.6\nSTS\nDES\n48\n2\n19-30 April\nN/A\n2B\n10.8\nHD\n-\n2-4,10-27\n12B\n11.0\nN/A\nHD\n-\nMay\n17B\n12.2\nN/A\nHD\n-\n3\n25-30 April\n18B\n16.6\nESBS\nFGE\n30\n13-20, 23-27 May\n19B\n16.7\nESTS\nFGE\n39\n4\n25-30 April\n20A\n15.5\nSTS\nDES\n48\n13-20, 23-27 May\n5\n20-30 June\n2B\n10.4\nN/A\nHD\n-\n1, 6-11 July\n12B\n10.4\nN/A\nHD\n-\n17B\n11.2\nN/A\nHD\n-\n6\n20-30 June\n18B\n16.9\nESBS\nFGE\n30\n1, 5-8, 11-14 July\n19B\n17.0\nESTS\nFGE\n39\n7\n20-30 June\n20A\n15.5\nSTS\nDES\n48\n1, 5-8, 11-14 July\naTest Series 1, 2, 4, 5, and 7, conducted without fyke-net frames in place;\nTest Series 3 and 6 conducted with fyke-net frames in place.\nDESBS = extended-length submersible bar screen,\nESTS = extended-length submersible traveling screen,\nSTS = standard-length submersible traveling screen.\nN/A = no guidance device present\nDES = descaling test, HD = horizontal distribution test,\nFGE = fish guidance efficiency test.","6\nVertical barrier screen\nThe Dalles Dam cross section\nGatewell\n(bulkhead slot)\nGate slot\nIce and trash\nsluiceway\nVertical barrier screen\nFLOW\nMesh panel\nwith perforated\nExtended-length\nplate back\nscreen\nFyke\nSolid panel\nnets\n8:0\nFigure 2. . -- Cross section of turbine unit at The Dalles Dam\nwith extended-length screen and fyke nets in\nplace.","7\ndesigned for use with STSs, consisted of seven, 2.7-m high\npanels, each of which extended across the full width of the slot.\nEach FGE test lasted a minimum of 1 hour and typically began\nat 2000 h (dusk) and ended between 2100 and 2400 h when it was\nestimated that the target number of fish (200 total) had been\ncollected in the gatewell and fyke nets. Total numbers of fish\ncollected were monitored by dipnetting the gatewells during the\ntest.\nPast FGE studies have utilized fyke nets attached to a frame\nbeneath the STS to collect unguided fish. With the extended-\nlength screens this is not possible since the screen framework\nfills the entire bulkhead slot from floor to ceiling of the\nturbine intake (Fig. 2) Therefore, a frame with fyke nets to\ncollect unguided fish was installed in the downstream gate slot.\nAs in 1993, redesigned fyke-net frames, more streamlined than\nolder styles, were used to reduce the effect of the frame on flow\nthrough the test unit. Newly designed fyke nets were also used\nto minimize the water resistance and increase flow through the\nnet.\nWith the extended-length screens, fyke nets were arranged in\nthree columns (designated left, center, right, as viewed from the\ndownstream side) and seven levels (numbered from top to bottom)\n(Fig. 2) . Because the proportion of total fyke-net catch for\neach column cannot be reliably predicted with extended-length\nscreens, cod ends were placed on all 21 fyke nets used in FGE\ntests with these screens. An analysis of fyke-net catch by net","8\ncolumn with extended-length screens at McNary Dam is included in\nMcComas et al. 1994.\nFish guidance efficiency tests with an ESBS and ESTS were\nconducted simultaneously in the center slots of Units 18 and 19,\nrespectively, during the spring and summer outmigration. There\nwere no FGE tests conducted with an STS at The Dalles Dam in\n1994.\nSpring testing with extended-length screens began on\n18 April with descaling tests (Table 1) . As in 1993, descaling\ntests were conducted prior to starting FGE tests to determine if\nthe initial configuration of prototype screens produced\nunacceptable levels of descaling. The absence of excessive\ndescaling in tests conducted from 18 to 22 April led to the start\nof FGE tests on 25 April.\nUnits 18, 19, and 20 were operated only during FGE tests.\nInitial screen placement at the east end of the powerhouse is\nshown in Table 2.\nDuring some of the first FGE tests in spring, numerous bits\nof hardware appeared along with the catch in the fyke nets in\nSlot 18B. When the ESBS was raised to deck level for inspection\nafter the FGE test on 30 April, bolts and welds were found to be\nbroken, several perforated plates were loose and some were\nmissing. Tests were suspended until all screens could be raised\nto deck level and inspected. During this inspection process, the\nESBS in Slot 18A became wedged in the slot and was severely\ndamaged. Because this ESBS could not be used, the remaining","9\nTable 2.\n- Screen arrangement, by screen type and porosity (%)\n,\nfor 1994 descaling and fish guidance efficiency (FGE)\ntests at The Dalles Dam (STS = standard-length\nsubmersible traveling screen, ESBS = extended-length -\nsubmersible bar screen, ESTS = extended-length\nsubmersible traveling screen) .\nSlot\nTest\n17C\n18A\n18B\n18C\n19A\n19B\n19C\n20A\n20B\nInitial\nSTS\nESBS\nESBS\nESBS\nESTS\nESTS\nESTS\nSTS\nSTS\ndescaling\n48\n25\n30\n35\n34ยช\n39\n44\n48\n48\nInitial\nSTS\nESBS\nESBS\nESBS\nESTS\nESTS\nESTS\nSTS\nSTS\nspring\nFGE\n48\n25\n30\n35\n34\n39\n44\n48\n48\nFinal\nESBS\nESBS\nSTS\nESTS\nESTS\nSTS\nSTS\nESTS\nspring\nFGE4\n35\n30\n48\n44\n39\n48\n48\n34\nSummer\nESBS\nESBS\nSTS\nESTS\nESTS\nSTS\nSTS\nESTS\nFGE\n35\n30\n48\n44\n39\n48\n48\n34\na34% porosity ESTS acquired from McNary Dam.\nScreens were rearranged after the 25% porosity ESBS was damaged during\nthe spring testing.","10\nscreens had to be rearranged for subsequent tests (Table 2) .\nFish guidance efficiency tests resumed on 13 May when all screens\nhad been repaired, rearranged, and deployed.\nOnly very low levels of spill (associated with adult\nattraction water tests) occurred at The Dalles Dam during the\nfirst six tests (25-3 April) . Substantial spill for juvenile\nfish passage began 1 May at the project, but was shut off 1 hour\nprior to and for the duration of individual FGE tests.\nDifferences in FGE between the ESBS (Unit 18) and ESTS\n(Unit 19) for both yearling and subyearling chinook salmon were\nexamined using analysis of variance (ANOVA) followed by a\nFisher's Protected Least Significant Difference multiple\ncomparison technique (Petersen 1985). Statistical significance\nwas established for a = 0.05. Test days on which less than\n30 fish of the target species were collected were pooled with\nsubsequent test days. When this occurred for one slot and not\nfor the other on a given day, blocking by day was not used for\nthe ANOVA. A randomized block design could not be used because\nof test days with insufficient sample size.\nResults and Discussion\nYearling Fish\nTesting for FGE began on 25 April and ended on 27 May when\nfish numbers dropped at the end of the spring outmigration\n(Appendix Table 1) .\nTests conducted with ESBSs and ESTSs resulted in mean FGES\nfor yearling chinook salmon of 69 and 65%, respectively","11\n(SEs = 3%). The difference was not statistically significant\n(F = 1.56, P = 0.2210)\nEarly in the season, FGE was somewhat higher than later on;\nmean FGEs for the first 6 tests were 76 and 72% for the ESBS and\nESTS, respectively (SEs = 2%) ; again, the difference was not\nsignificant (F = 3.63, P = 0.1151). Variability in FGE estimates\nfor yearling chinook salmon may be attributed to stock\ndifferences of fish passing the project during the testing\nseason, degree of smoltification, increasing water temperatures,\nand spill interaction at the project. In 1993, FGE was 73, 60,\nand 44% for the ESBS, ESTS, and STS, respectively, for yearling\nchinook salmon on the west end of the powerhouse (Brege et al.\n1994) .\nFigure 3 shows daily fluctuations in FGE for yearling\nchinook salmon. Fish numbers for other salmonids were too low\nfor statistical comparisons; however, mean pooled FGE for\nsteelhead was 77 and 75%, for coho salmon (O. kisutch) 89 and\n85%, and for sockeye salmon 64 and 46% with the ESBS and ESTS,\nrespectively. Total fish numbers used in the calculation of FGE\nfor steelhead were 619 and 445, for coho salmon 326 and 198, and\nfor sockeye salmon 280 and 262 with the ESBS and ESTS,\nrespectively.\nNet-level catches are shown in Figure 4. With both\nextended-length screens, the highest fyke-net catches were in Net\nLevels 4, 5, and 6, which differed from 1993 when the highest\nnet-level catches were only in Levels 5 and 6.","12\n100\nESBS\nESTS\n80\n60\n+\n40\n20\n0\n13 14 15 16 17 18 19 20 23 24 25 26 27\n25 26 27 28 29 30\nAPRIL\nMAY\n. -- Daily fish guidance efficiency (FGE) for yearling\nFigure 3.\nchinook salmon at The Dalles Dam, 1994 (ESBS = extended-\nlength submersible bar screen, ESTS = extended-length\nsubmersible traveling screen).","13\n100\nESBS\nESTS\n80\n60\n40\n20\n0\nFGE\n1\n2\n3\n4\n5\n6\n7\nNET LEVEL\nYearling chinook salmon seasonal fish guidance\nFigure 4. .\nefficiency (FGE) and net catch by net level at The\nDalles Dam, 1994 (ESBS = extended-length submersible bar\nscreen, ESTS = extended- - length submersible traveling\nscreen .","14\nNet catches with the ESBS were more evenly distributed among\nthe three fyke-net columns in 1994, while net catches with the\nESTS were more evenly distributed in 1993. With the ESBS, net\ncatches for the left, center, and right columns were 34, 32, and\n34% in 1994, and 42, 28, and 30% in 1993. With the ESTS, catches\nwere 30, 36, and 34% in 1994, and 35, 33, and 32% in 1993.\nSince the center-column net catch for the ESBS was less than\none-third of the total catch, expanding the center-column net\ncatch by three (as with the STS) might have produced biased FGE\nestimates for yearling chinook salmon; however, with only the\ncenter column in use, flows into the nets (and therefore, the\ncatch distribution) may have been different.\nSubyearling Fish\nSubyearling chinook salmon FGE testing began on 20 June and\nconcluded on 14 July. Other juvenile salmonids were captured,\nbut not in sufficient numbers for statistical analysis (Appendix\nTable 1)\nSpill during the summer FGE tests was less than 2 kcfs.\nThis discharge, through Spillbay 1 (at the north end of the\nspillway, Fig. 1), was used to attract adult fish into the\nspillway entrance of the adult collection system. Spill of about\n40 kcfs occurred nightly at the conclusion of FGE tests\n(typically 2300 h) and continued until 0400 h. On nights when no\nFGE tests were conducted, spill occurred from 2000 to 0400 h.\nMean FGE for subyearling chinook salmon at the east end of\nthe powerhouse was significantly higher with the ESBS (54%) than\nwith the ESTS (47%) (F = 7.76, P = 0.0118). Figure 5 shows the","15\n100\nESBS\nESTS\n-\n-\n80\n60\n+\n40\n20\n20 21 22 23 24 25 26 27 28 29 30 1 5 6 7 8 11 12 13 14\n0\nJUNE\nJULY\n. -- Daily chinook fish salmon guidance at efficiency (FGE) for\nlength submersible The Dalles Dam, 1994 subyearling\nFigure 5.\nsubmersible traveling bar screen) screen, ESTS = extended-length (ESBS = extended- =\n.","16\ndaily fluctuations in FGE for subyearling chinook salmon in 1994.\nThe 1993 tests at the west end of the powerhouse resulted in FGE\nestimates of 59 and 51% with the ESBS and ESTS, respectively.\nNet-level catches are shown in Figure 6. As in spring, the\nhighest fyke-net catches with the extended-length screens were in\nNet Levels 4, 5, and 6. In 1993 at the west end of the\npowerhouse, net-level catches were highest in Net Levels 5 and 6.\nNet catch was not evenly distributed among the three net\ncolumns for either of the extended-length screens. Net catches\nfor the left, center, and right columns were 37, 34, and 29% in\n1994 and 41, 30, and 29% in 1993 for the ESBS. For the ESTS,\ncatches were 37, 35, and 28% in 1994, and 36, 36, and 28% in\n1993. Since the center-column net catch varied from 30 to 36% of\nthe total catch, expanding the center-column net catch by three\n(as with the STS) might have produced biased FGE estimates for\nextended-length screens with subyearling chinook salmon.\nOBJECTIVE 2: EFFECTS OF EXTENDED-LENGTH SCREENS ON FISH\nDESCALING RATES\nApproach\nFish descaling rates were monitored during descaling and FGE\ntests using standard Fish Transportation Oversight Team descaling\ncriteria (Ceballos et al. 1993). Initially, a series of five\ndescaling tests was conducted to determine if any of the screen\ntypes or configurations caused severe increases in descaling\nrates. Screens were arranged to compare various screen types,\nperforated plate porosity combinations, and resultant approach\nvelocities (Table 3) .","17\n100\nESBS\nESTS\n80\n60\n40\n20\n0\nFGE\n1\n2\n3\n4\n5\n6\n7\nNET LEVEL\n6. . -- Subyearling chinook salmon seasonal fish guidance\nDalles efficiency (FGE) and net catch by net level at\nFigure\nscreen, Dam, ESTS 1994 (ESBS = extended-length submersible The bar\nscreen) . = extended-length submersible traveling","18\nTable 3. -- Initial descaling test results for yearling chinook\nsalmon at The Dalles Dam, 1994 (ESBS = extended - length\nsubmersible bar screen, ESTS = extended-length -\nsubmersible traveling screen, STS = standard-length -\nsubmersible traveling screen) . Total catch and mean\ndescaling are combined results of five separate tests.\nSlot\n18A\n18B\n18C\n19B\n19C\n20A\nScreen type\nESBS\nESBS\nESBS\nESTS\nESTS\nSTS\nPorosity of perf. plate (%)\n25\n30\n35\n39\n44\n48\nEst. approach velocity (fps) a\n2.7\n2.75\n2.3\n2.75\n2.3\n2.75\nTotal catch\n400\n478\n279\n353\n136\n97\nMean descaling (%)\n3.3\n2.7\n0.4\n7.1\n2.2\n2.1\nApproach velocity calculated at a turbine unit discharge of 17.8 kcfs for\nUnits 18 and 19, and 15.5 kcfs for Unit 20.","19\nGatewells of turbine units containing the test screens were\ndipnetted prior to the start of a test to remove any residual\nfish. The units were then started and run for several hours or\nuntil a sufficient number of fish had been collected. The units\nwere then shut down and the accumulated fish dipnetted out,\nanesthetized with tricaine methane sulfonate (MS-222) , , and\nexamined.\nStatistical comparisons of descaling rates were made with\nmethods and parameter values similar to those used for FGE\nanalyses.\nResults and Discussion\nYearling Fish\nResults of initial descaling tests (Test Series 1, Table 1)\nindicated that descaling rates with the extended-length screens,\nused in combination with selected perforated plate porosities,\nwere, in most cases, similar to descaling rates with the STS\n(control) (Table 3) .\nDuring Test Series 3 and 4 (Table 1), mean descaling rates\nfor yearling chinook salmon were 3.2, 3.4, and 0.0%, for the\nESBS, ESTS, and STS, respectively (SEs = 0.7, 0.8, and 0.0%,\nrespectively). Daily fluctuations in yearling chinook salmon\ndescaling rates are shown in Figure 7. In 1993, mean descaling\nrates for yearling chinook salmon during FGE tests in turbine\nunits at the west end of the powerhouse were 4.8, 5.1, and 6.1%\nfor the ESBS, ESTS, and STS, respectively.","20\n25\nESBS\nESTS\nSTS\n20\n15\n10\n5\n0\n13 14 15 16 17 18 19 20 23 24 25 26 27\n25 26 27 28 29 30\nAPRIL\nMAY\n- - Daily descaling rates for yearling chinook salmon at\nFigure 7.\nThe Dalles Dam, 1994 (ESBS = extended-length\nsubmersible bar screen, ESTS = extended-length -\nsubmersible traveling screen, STS = standard-length\nsubmersible traveling screen)\n.","21\nAlthough descaling rates were all low, there was a\nstatistically significant difference in descaling rates between\nthe extended-length screens and the control condition (STS) for\nyearling chinook salmon (i.e., the extended-length screen mean\ndescaling rate was significantly greater than 0%) Fish numbers\nfor other salmonids were too low for statistical comparisons;\nhowever, mean descaling rates for steelhead were 2.7, 3.6, and\n6.7%, for coho salmon 1.0, 3.0, and 3.4%, and for sockeye salmon\n9.6, 14.0, and 0.0%, for the ESBS, ESTS, and STS, respectively.\nA summary of descaling rate results from all tests at The\nDalles Dam in 1994 is provided in Appendix Table 2.\nSubyearling Fish\nThe mean descaling rate was significantly higher for the\nESTS (3.3%) than for either the ESBS (1.8%) or the STS (0.7%)\n(F = 8.15, P = 0.0101, SEs = 0.4%) . Daily fluctuations in\nsubyearling chinook salmon descaling rates are shown in Figure 8.\nIn 1993 in the west end units, mean descaling rates were 4.5,\n6.9, and 0.9% for the ESTS, ESBS, and the STS, respectively.\nOBJECTIVE 3: HORIZONTAL DISTRIBUTION OF JUVENILE SALMONIDS\nACROSS THE POWERHOUSE\nApproach\nThe center slots of Turbine Units 2, 12, and 17 were\ndipnetted daily to determine the distribution of juvenile\nsalmonids entering at different locations across the powerhouse.\nAs shown in Figure 1, Unit 2 is situated at the west end of the\npowerhouse, Unit 12 near the center, and Unit 17 near the east","22\n10\nESBS\nESTS\nSTS\n8\n6\n4\n2\n20 21 22 23 24 25 26 27 28 29 30 1 5 6 7 8 11 12\n0\n13\n14\nJULY\nJUNE\n- Daily at descaling rates for subyearling chinook salmon\nFigure 8\nThe Dalles Dam, 1994 (ESBS = extended-length\n-\n.\nsubmersible bar screen, ESTS = extended - length\nsubmersible traveling screen, STS = standard-length\nsubmersible traveling screen)","23\nend. These test units did not contain fish guidance screens, but\ndid have vertical barrier screens to facilitate fish capture via\ndip basket. During the horizontal distribution measurements,\njuvenile fish bypass orifices were blocked with a suspended steel\nplate identical to those used during FGE and descaling tests.\nThe orifice discharge into the ice/trash sluiceway was checked\ntwice a day to make sure the plate remained in place. Units 2,\n12, and 17 were operated 24 hours a day under computerized load\ncontrol during the horizontal distribution tests.\nThe test slots were dipnetted at the start of a test, then\ndaily between 1630 and 1800 h. On 5 occasions fish were allowed\nto accumulate for a 2-day period when windy conditions did not\nallow for the safe operation of the dip net (4 and 27 May,\n24 June, 1 and 11 July) . Captured fish were anesthetized with\nMS-222, identified by species, and enumerated.\nFrom 3 to 5 May, an evaluation of the diel recruitment of\nfish into Slot 2B was conducted as part of the horizontal\ndistribution monitoring. Fish were dipnetted and enumerated\nhourly. During the second day of diel monitoring, Unit 2 was\ninadvertently shutdown during the test, biasing the results, and\nlimiting the test to a single 24-hour period.\nResults and Discussion\nYearling Fish\nLimited horizontal distribution information acquired since\n1973 indicated that most juvenile salmonids passed through the\nwest end of the powerhouse. This year's evaluation yielded a","24\nsimilar result. Individual test results of all horizontal\ndistribution measurements are presented in Appendix Table 3.\nThe total number of juvenile salmonids (all species\ncombined) obtained during daily gatewell dipnetting from 19 April\nthrough 27 May was 8,370. Catches in Slots 2B (west) 12B\n(center), and 17B (east) were 61.5, 24.7, and 13.8% of the total\ncatch, respectively, indicating higher passage at the west end of\nthe powerhouse (Fig. 9).\nBased on a single 24-hour sample period (3-4 May) passage\nthrough the powerhouse was predominately between dusk and dawn.\nThe highest hourly passage occurred between 2100 and 2200 h\n(Fig. 10). Similar passage patterns were observed during nightly\nFGE tests with gatewell catch fish numbers frequently doubling in\na 15 to 20 minute time period between 2100 and 2200 h. To reduce\nthe number of juvenile salmonids affected, an individual\nFGE/descaling test was concluded as soon as the test unit could\nbe shut down after these influxes of juvenile salmonids occurred.\nSubyearling Fish\nSummer horizontal distribution results were similar to\nspring results with the highest catches at the west end of the\npowerhouse. The total summer catch was 2,620 fish, with 65.1,\n26.3, and 8.6% of the total catch in Slots 2B (west), 12B\n(center), and 17B (east), respectively (Fig. 11).","25\n600\nSLOT 17B\nSLOT 12B\nSLOT 2B\n500\n400\n300\n200\n100\n0\n10\n13\n15\n17\n19\n21\n24\n27\n20\n22\n26\n28\n30\n3\nMAY\nAPRIL\n- Daily horizontal distribution across the powerhouse\nFigure 9\n-\nfor all juvenile salmonids during the spring test\n.\nperiod at The Dalles Dam, 1994. Slot 2B is at the\nwest end of the powerhouse, Slot 12B is in the center,\nand Slot 17B is at the east end.","26\n40\n30\n20\nTOTAL CATCH = 158\n10\nO\n1800\n2400\n0600\n1200\n1600\nTIME OF DAY\nFigure 10. - Hourly combined), gatewell dip-net catch (all\nSlot 2B, The Dalles Dam, salmonids 3-4 May 1994.","27\n500\nSLOT 17B\nSLOT 2B\nSLOT 12B\n400\n300\n200\n100\n0\n21\n22\n24\n25\n26\n27\n28\n29\n1\n6\n7\n8\n11\nJUNE\nJULY\n- Daily horizontal distribution across the powerhouse\nFigure 11\n-\n.\nfor all juvenile salmonids during the summer test\nperiod at The Dalles Dam, 1994. Slot 2B is at the\nwest end of the powerhouse, Slot 12B is in the\ncenter, and Slot 17B is at the east end.","28\nCONCLUSIONS\n1) Mean FGES with the extended-length bar screen (69%) and the\nextended-length traveling screen (65%) were similar for\nyearling chinook salmon.\n2) Although descaling rates were all low, the extended-length\nscreens had significantly higher descaling rates (3.2% for the\nESBS and 3.4% for the ESTS) than the STS (0%) for yearling\nchinook salmon.\n3) Mean FGE with the extended-length submersible bar screen (54%)\nwas significantly higher than with the extended-length\nsubmersible traveling screen (47%) for subyearling chinook\nsalmon.\n4) For subyearling chinook salmon, the extended-length\nsubmersible traveling screen had a significantly higher\ndescaling rate (3.3%) than the extended-length submersible bar\nscreen (1.8%) and the STS (0.7%) . There was no significant\ndifference between the descaling rates of the extended-length\nsubmersible bar screen and the STS.\n5) Horizontal distribution measurements during spring and summer\nindicated that juvenile salmonid passage was considerably\nhigher in the west turbine units of the powerhouse than in\neither the center or east units.","29\nACKNOWLEDGMENTS\nWe express our appreciation to our seasonal personnel for\ntheir interest and efforts during this study. We extend special\nthanks to the Portland District COE personnel, particularly\nMr. John Ferguson, and at The Dalles Dam, Mr. Earl Miles,\nMechanical Crew Foreman, Mr. Darryl Sterritt and Mr. Joe Ellis,\nshift leaders, Mr. Dale Rollins and Mr. Richard VanHoose,\nelectricians, and Mr. Stephen Rich, Mr. Steven Dodson, and the\nmembers of the traveling screen crew, for their assistance and\ncooperation. We also extend special thanks to Mr. Wallace\nIceberg and Mr. Phillip Weitz of our maintenance staff for their\ninnovative ideas and efforts in the completion of this study.","","31\nREFERENCES\nBrege, D. A., , R. F. Absolon, B. P. Sandford, and D. B. Dey.\n1994. Studies to evaluate the effectiveness of extended-\nlength screens at The Dalles Dam, 1993. Report to the U.S.\nArmy Corps of Engineers, Delivery Order E96930030, 26 p. +\nAppendixes. (Available from Northwest Fisheries Science\nCenter, 2725 Montlake Blvd. E., Seattle, WA 98112-2097. )\nBrege, D. A. , S. J. Grabowski, W. D. Muir, S. R. Hirtzel,\nS. J. Mazur, and B. P. Sandford. 1992. Studies to determine\nthe effectiveness of extended traveling screens and extended\nbar screens at McNary Dam, 1991. Report to the U.S. Army\nCorps of Engineers, Delivery Order E86910060, 32 p. +\nAppendixes. (Available from Northwest Fisheries Science\nCenter, 2725 Montlake Blvd. E. Seattle, WA 98112-2097. )\nCeballos, J. R., S. W. Pettit, J. L. McKern, R. L. Boyce, and\nD. F. Hurson. 1993. Fish Transportation Oversight Team\nAnnual Report--FY 1992. Transport operations on the Snake\nand Columbia Rivers. NOAA Tech. Memo. NMFS F/NWR-32, 75 p. +\nAppendixes.\nMcComas, R. L., D. A. Brege, W. D. Muir, B. P. Sandford, and\nD. B. Dey. 1993. Studies to determine the effectiveness of\nextended-length submersible bar screens at McNary Dam, 1992.\nReport to U.S. Army Corps of Engineers, Delivery Order\nE86910060, 34 p. + Appendixes. (Available from Northwest\nFisheries Science Center, 2725 Montlake Blvd. E. Seattle, WA\n98112-2097.)\nMcComas, R. L., B. P. Sandford, and D. B. Dey. 1994. Studies\nto determine the effectiveness of extended-length screens at\nMcNary Dam, 1993. Report to U.S. Army Corps of Engineers,\nDelivery Order E86910060, 25 p. + Appendixes. (Available\nfrom Northwest Fisheries Science Center, 2725 Montlake Blvd.\nE. Seattle, WA 98112-2097.)\nMonk, B. H. , W. D. Muir, and M. H. Gessel. 1987. Studies to\nevaluate alternative methods of bypassing juvenile fish at\nThe Dalles Dam--1986. Report to the U.S. Army Corps of\nEngineers, Contract DACW57-85-F-0295, 12 p. + Appendixes.\n(Available from Northwest Fisheries Science Center,\n2725 Montlake Blvd. E., Seattle, WA 98112-2097.)\nMonk, B. H. , W. D. Muir, and R. F. Krcma. 1986. Studies to\nevaluate alternative methods of bypassing juvenile fish at\nThe Dalles n--1985. - Report to the U.S. Army Corps of\nEngineers, Contract DACW57-85-H-0001, 33 p. + Appendixes.\n(Available from Northwest Fisheries Science Center,\n2725 Montlake Blvd. E., Seattle, WA 98112-2097.)","32\nPetersen, R. G. 1985. Design and Analysis of Experiments.\nMarcel Dekker, Inc., New York, 429 p.\nSwan, G. A. , R. F. Krcma, and W. E. Farr. 1979. Dipbasket for\ncollecting juvenile salmon and trout in gatewells at\nhydroelectric dams. Prog. Fish-Cult. 41(1) : 48-49.","33\nAPPENDIX TABLES","","35\nAppendix Table 1. - Numbers of fish caught, by species, and fyke-\nnet catch distributions for individual\nreplicates of FGE tests at The Dalles Dam,\n1994 (ESBS = extended-length submersible bar\nscreen, ESTS = extended-length submersible\ntraveling screen)\nDate (test slot, screen type)\n25 April (18B, ESBS)\nSubyearling\nYearling\nLocation\nchinook\nchinook\nSteelhead\nCoho\nSockeye\nL C R Tot 1\nL C R Tot\nL C R Tot\nL C R Tot\nL C R Tot\nLevel 1\n1 1\n2\n1\n1\nLevel 2\n4\n2\n1\n7\nLevel 3\n1\n1\n8\n5\n13\nLevel 4\n1 2\n3\n5\n20\n19\n44\nLevel 5\n2\n4\n2\n8\n14\n11\n17\n42\nLevel 6\n2\n2\n7\n5\n12\nLevel 7\n1\n3\n4\nNet total\n4 8 4 16\n40 33 50 123\nGatewel l\n2\n336\n7\nTotal\n18\n459\n7\nFGE (%)\n11\n73\n100\n25 April (19B, ESTS)\nSubyearling\nYearling\nLocation\nchinook\nchinook\nSteelhead\nCoho\nSockeye\nL C R Tot\nL C R Tot\nL C R Tot\nL C R Tot\nL C R Tot\nLevel 1\nLevel 2\n4\n3\n2\n9\n4\n2\n1\n7\nLevel 3\n1\n1\n4\n3\n1\n8\nLevel 4\n1\n1\n2\n7 10 6 23\nLevel 5\n1\n1\n5 8 9 22\nLevel 6\n2 7 7 16\n1 1\nLevel 7\n1\n1\n2\n2\nNet total\n4\n6\n4\n14\n22 30 26 78\n1 1\nGatewel l\n2\n133\n1\nTotal\n16\n211\n1\n1\nFGE (%)\n13\n63\n0\n100\n26 April (18B, ESBS)\nSubyearling\nYearling\nLocation\nchinook\nchinook\nSteelhead\nCoho\nSockeye\nL C R Tot\nL C R Tot\nL\nC R Tot\nL C R Tot\nL C R Tot\nLevel 1\n1\n1\nLevel 2\n1\n1\n2\n3\n2\n7\n1 1\nLevel 3\n4\n1\n1\n6\n2\n1\n3\nLevel 4\n1 7 8 16\n1\n1\n2\nLevel 5\n3 11 8 22\n3 1\n4\nLevel 6\n2\n2\n4\n5 2 9 16\n2\n2\nLevel 7\nNet total\n3\n3\n6\n15 24 28 67\n6 3 3 12\nGatewel l\n172\n36\nTotal\n6\n239\n48\nFGE (%)\n0\n72\n75\n1 L = left, C = center, and R = right fyke-net column;\nTot = total catch for net level.","36\nAppendix Table 1.--Continued.\n26 April (19B, ESTS)\nSubyearLing\nYearling\nLocation\nchinook\nchinook\nSteelhead\nCoho\nSockeye\nL C R Tot\nL C R Tot\nL C R Tot\nL C R Tot\nL C R Tot\nLevel 1\n1\n1\nLevel 2\n7\n6 13\n4\n1\n4\n9\n1\n1\nLevel 3\n2 5\n7\nLevel 4\n3\n1\n4\n3\n6\n1\n10\n2\n2\nLevel 5\n1\n3\n1\n5\n4 10 12 26\n1 1 2\nLevel 6\n2\n2\n4\n3\n4\n2\n9\n1 1\n2\nLevel 7\n1\n1\nNet total\n11 6 10 27\n16 26 20 62\n1\n5\n1\n7\nGatewell\n1\n186\n41\nTotal\n28\n248\n48\nFGE (%)\n4\n75\n85\n27 April (18B, ESBS)\nSubyearling\nYearling\nLocation\nchinook\nchinook\nSteelhead\nCoho\nSockeye\nL C R Tot\nL C R Tot\nL C R Tot\nL C R Tot\nL C R Tot\nLevel 1\nLevel 2\n3\n3\nLevel 3\n7\n7\nLevel 4\n1\n1\n4\n7\n1\n12\n1\n1\n2\nLevel 5\n3\n3\n2 6 3 11\nLevel 6\n1\n1\n3\n2\n4\n9\n1\n1\nLevel 7\n1\n1\nNet total\n23\n5\n19 15 8 42\n2114\nGatewell\n2\n139\n21\nTotal\n7\n181\n25\nFGE (%)\n29\n77\n84\n27 April (19B, ESTS)\nSubyearling\nYearling\nLocation\nchinook\nchinook\nSteelhead\nCoho\nSockeye\nL\nC R Tot\nL\nC R Tot\nL C R Tot\nL C R Tot\nL C R Tot\nLevel 1\n2\n4\n6\n2\n2\nLevel 2\n5\n3\n2\n10\n3\n1\n5\n1\n1\nLevel 3\n1\n1\nLevel 4\n1\n1\n4\n3\n1\n8\n1\n1\n2\nLevel 5\n1\n1\n7\n10\n9\n26\n1\n1\nLevel 6\n3 1\n4\n4\n2\n3\n9\nLevel 7\n1\n2\n3\n1\n1\nNet total\n11 5 6 22\n19 17 18 54\n2\n1\n2\n5\nGatewell\n1\n109\n13\nTotal\n23\n163\n18\nFGE (%)\n4\n67\n72","37\nAppendix Table 1.--Continued.\n28 April (18B, ESBS)\nYearling\nSubyearling\nSockeye\nCoho\nSteelhead\nchinook\nchinook\nLocation\nL C R Tot\nL C R Tot\nL C R Tot\nL C R Tot\nC R Tot\nL\nLevel 1\n1\n1\n1\n1\nLevel 2\n1247\n1\nLevel 3\n1\n1\n1\n6\n8\nLevel 4\n1 1\n252 9\n4\nLevel 5\n1\n1\n2\n5\n5\n1\nLevel 6\n1\nLevel 7\n1\n1\n1 2\n5 13 12 30\n1\n412\n7\nNet total\n9\n118\n1\nGatewell\n11\n148\n8\nTotal\n82\n80\n13\nFGE (%)\n28 April (19B, ESTS)\nYearling\nSubyearling\nSockeye\nCoho\nSteelhead\nchinook\nchinook\nLocation\nL C R Tot\nL C R Tot\nL C R Tot\nL C R Tot\nL C R Tot\n1\n1\n1\n2\n1\nLevel 1\n11\n11\n10\nLevel 2\n4\n1\n5\n1\n2\n1\nLevel 3\n11\n224\nLevel 4\n213\n6\n1\n2\n3\nLevel 5\n3\n4\n5\nLevel 6\n2\n3\nLevel 7\n1\n1\n11\n6 3 5 14\n26\nNet total\n10\n5 11\n3\n50\n2\nGatewell\n4\n64\n28\nTotal\n75\n78\n7\nFGE (%)\n29 April (18B, ESBS)\nYearling\nSubyearling\nSockeye\nCoho\nSteelhead\nchinook\nchinook\nLocation\nL C R Tot\nL C R Tot\nL C R Tot\nL C R Tot\nL C R Tot\n1\n1 1\n1\nLevel 1\n221\n5\n2 2\nLevel 2\n1 1 1 3\nLevel 3\n2 2\n3 2 5 10\n2 2 1 5\nLevel 4\n142\n7\n2\n4\nLevel 5\n2\n1 1 2\n2\n4\n6\n3\n4\nLevel 6\n11\n2\nLevel 7\n1 3 4\n9 10 13 32\n5 4 9 18\nNet total\n22\n137\n2\nGatewell\n26\n169\n20\nTotal\n85\n81\n10\nFGE (%)","38\nAppendix Table 1.--Continued.\n29 April (19B, ESTS)\nSubyearling\nYearling\nLocation\nchinook\nchinook\nSteelhead\nCoho\nSockeye\nL C R Tot\nL C R Tot\nL C R Tot\nL C R Tot\nL C R Tot\nLevel 1\n1\n1\nLevel 2\n4 5 4 13\n213\nLevel 3\n2 1 3\n1\n1\nLevel 4\n1113\n325\n1 1\nLevel 5\n123\n1124\n1\n1\nLevel 6\n1315\n3126\nLevel 7\n134\n11\n2\nNet total\n8 12 12 32\n5 7 8 20\n1113\nGatewell\n2\n83\n16\nTotal\n34\n103\n19\nFGE (%)\n6\n81\n84\n30 April (18B, ESBS)\nSubyearling\nYearling\nLocation\nchinook\nchinook\nSteelhead\nCoho\nSockeye\nL C R Tot\nL C R Tot\nL C R Tot\nL C R Tot\nL C R Tot\nLevel 1\n1\n1\nLevel 2\n1 2 1 4\n3126\nLevel 3\n2 2\n4\n211\n4\n2 2\nLevel 4\n1124\n243\n9\nLevel 5\n1\n5\n3331 9\n1 1\nLevel 6\n3115\n3238\n11\nLevel 7\n112\n1\n1\nNet total\n8 11 5 24\n13 12 13 38\n4 4\nGatewell\n4\n112\n18\n3\nTotal\n28\n150\n22\n3\nFGE (%)\n14\n75\n82\n100\n30 April (19B, ESTS)\nSubyearling\nYearling\nLocation\nchinook\nchinook\nSteelhead\nCoho\nSockeye\nL C R Tot\nL\nC R Tot\nL C R Tot\nL C R Tot\nL C R Tot\nLevel 1\n1\n1\nLevel 2\n2\n9\n1\n12\nLevel 3\n3\n3\n1\n1\nLevel 4\n1\n1\n2147\nLevel 5\n3115\n2529\nLevel 6\n1\n1\n3137\nLevel 7\n213\nNet total\n9 13 3 25\n8 8 9 25\nGatewell\n7\n55\n8\nTotal\n32\n80\n8\nFGE (%)\n22\n69\n100","39\nAppendix Table 1.--Continued.\n13 May (18B, ESBS)\nSubyearling\nYearling\nCoho\nSockeye\nchinook\nSteelhead\nLocation\nchinook\nL C R Tot\nL C R Tot\nL C R Tot\nL C R Tot\nL C R Tot\n224\n1 1\nLevel 1\n1113\n325\nLevel 2\n6118\n11\n4228\n5229\nLevel 3\n1\n1\n4 3 4 11\n6\n7\n1\n14\n2\n2\n1\n1\nLevel 4\n2316\n5 12 10 27\n1\n1\n1\n1\n7\n4 11\nLevel 5\n2\n8\n10\n10 2 8 20\n1146\n4 8 11 23\n1\n1\n2\nLevel 6\n1 1\n2\nLevel 7\n20 30 26 76\n12 15 7 34\n4\n2\n6\n2\n2\n28 11 20 59\nNet total\n31\n80\n115\n20\nGatewell\n21\n33\n139\n191\n26\nTotal\n55\n94\n58\n60\n77\nFGE (%)\n38\n13 May (19B, ESTS)\nSubyearling\nYearling\nSockeye\nSteelhead\nCoho\nLocation\nchinook\nchinook\nL C R Tot\nL C R Tot\nL C R Tot\nL C R Tot\nL C R Tot\nLevel 1\n1\n1\n1 1\n2\n2\n4\nLevel 2\n1225\n1\n1\n4127\n3\n4\nLevel 3\n1\n1\n112\n3 4 3 10\nLevel 4\n4 5 4 13\n5 6 2 13\n13 12 7 32\n373 13\n1\n1\n2\n2\nLevel 5\n2136\n9 8 10 27\n1\n1\nLevel 6\n4116\n4 9 10 23\n1\n1\n321 6\n3 2 2\n7\nLevel 7\n527\n34 29 23 86\n1113\nNet total\n12 9 11 32\n16 25 20 61\n48\n11\n8\nGatewell\n25\n101\n134\n14\n15\nTotal\n57\n162\n36\n79\n53\nFGE (%)\n44\n62\n14 May (18B, ESBS)\nSubyearling\nYearling\nchinook\nSteelhead\nCoho\nSockeye\nLocation\nchinook\nL C R Tot\nL\nC R Tot\nL C R Tot\nL C R Tot\nL C R Tot\n1\n1\n2\nLevel 1\n11\n11\n112\n112\nLevel 2\n1\n1\n1\n1\n1113\n235\nLevel 3\n112\n1247\n6\n1\n7\nLevel 4\n11\n2\n1\n3\n2 4 4 10\n8 2 5 15\n2\nLevel 5\n11\n1\n12\n2158\n21\nLevel 6\n5139\n1\n2 5 3 10\n1\n1\n1\nLevel 7\n2\n2\n6\n4 10\n20 9 18 47\n1416\n1225\n12 9 13 34\nNet total\n17\n14\n54\n11\n30\nGatewell\n17\n22\n24\n101\nTotal\n64\n77\n58\n53\n65\nFGE (%)\n47","40\nAppendix Table 1.--Continued.\n14 May (19B, ESTS)\nSubyearling\nYearling\nSockeye\nLocation\nchinook\nchinook\nSteelhead\nCoho\nL C R Tot\nL C R Tot\nL C R Tot\nL C R Tot\nL C R Tot\nLevel 1\n1\n1\nLevel 2\n4 5 2 11\n1\n2\n1\n1\nLevel 3\n2 1 2 5\n1\n1\n1\n1\n112\nLevel 4\n9 3 2 14\n1214\n213\nLevel 5\n9 3 6 18\n2125\n5\n2\n2\n2\n112\nLevel 6\n7 6 4 17\n2237\n1\nLevel 7\n1135\n1\n1\n41\n5\n112\n4 4 2 10\nNet total\n32 19 19 70\n7 6 7 20\n3\n11\n1\nGatewell\n18\n20\n3\n13\nTotal\n88\n40\n16\n23\nFGE (%)\n20\n50\n69\n33\n15 May (18B, ESBS)\nSubyearling\nYearling\nchinook\nSteelhead\nCoho\nSockeye\nLocation\nchinook\nL C R Tot\nL C R Tot\nL C R Tot\nL C R Tot\nL C R Tot\nLevel 1\n1\n1\n2 1 3\nLevel 2\n1113\n2\n13\n1\n112\nLevel 3\n3\n14\n4\n4\n4 4 2 10\n4\n15\n1\n1\n1\n2\n3\nLevel 4\n5 6 5 16\n3\n3\nLevel 5\n6 12 8 26\n6 7 7 20\n1337\n3317\n4419\n4 4 2 10\n3 3\n1\n1\nLevel 6\n4 4 3 11\nLevel 7\n1\n1\n18110\nNet total\n20 22 21 63\n17 16 12\n45\n15 7 7 29\n4 3 5 12\n9\n91\n89\nGatewell\n59\n119\n101\n19\nTotal\n122\n164\n120\n73\n76\n88\n47\nFGE (%)\n48\n15 May (19B, ESTS)\nSubyearling\nYearling\nCoho\nSockeye\nLocation\nchinook\nchinook\nSteelhead\nL C R Tot\nL C R Tot\nL C R Tot\nL C R Tot\nL C R Tot\n1\n1\nLevel 1\n1\n1\n224\n12\n3\n11\nLevel 2\n5 4 3 12\n3115\n1 1\n3\n3\n1\n1\nLevel 3\n11\n2226\n4 7 3 14\n6 8 2 16\n1214\nLevel 4\n1135\n9 5 9 23\n10 14 16 40\n257\n4\n6 10\nLevel 5\n2428\n1326\n1\nLevel 6\n9 8 9 26\n10 14 11 35\n3328\n2 2 4\nLevel 7\n7 10 8 25\n2 5 7 14\n7 5 10 22\nNet total\n31 27 26 84\n29 39 33 101\n100\n108\n27\nGatewell\n102\n202\n303\n125\n122\n49\n186\nTotal\n67\n80\n89\n55\nFGE (%)\n55","41\nAppendix Table 1.--Continued.\n16 May (18B, ESBS)\nSubyearling\nYearling\nSockeye\nSteelhead\nCoho\nchinook\nLocation\nchinook\nL C R Tot\nL C R Tot\nL C R Tot\nL C R Tot\nL C R Tot\n2 2\nLevel 1\n1\n2\n3\n11\n1\n1\n2\n1\n1\nLevel 2\n2248\n3 2 5\n1\n2 2\n1\nLevel 3\n5 3\n8\n1315\n1\n1\n13\n1\n1\nLevel 4\n8 14 9 31\n10\n2\n2\n2\n1 7 3 11\n1\n1\n2\nLevel 5\n9 15 11 35\n3\n1\n4\nLevel 6\n7 11 8 26\n3 4 4 11\nLevel 7\n1\n1\n2\n8\n1157\n4331 10\n7\n1\n33 45 35 113\n17 15 9 41\nNet total\n15\n29\n33\nGatewell\n84\n65\n43\n23\n36\nTotal\n197\n106\n77\n65\n81\nFGE (%)\n43\n61\n16 May (19B, ESTS)\nYearling\nSubyearling\nCoho\nSockeye\nchinook\nSteelhead\nLocation\nchinook\nL C R Tot\nL C R Tot\nL C R Tot\nL C R Tot\nL C R Tot\n1\n1\nLevel 1\n1\n1\n1\n3\n112\n2\n2\n1\n1\nLevel 2\n7 4 2 13\n1 2\n12\n1\nLevel 3\n3339\n1\n1\n1\n112\n1\nLevel 4\n7 3 8 18\n3\n3\n1\n1\n1\n2 5 4 11\n1225\n1\n1\nLevel 5\n16 12 12 40\n3\n4421 10\n2\n2\n21\nLevel 6\n9 12 11 32\n2\nLevel 7\n2 2\n2\n3115\n2125\n10 10 9 29\n5 2 6 13\nNet total\n43 35 39 117\n8\n14\n17\nGatewell\n58\n20\n22\n13\n27\nTotal\n175\n49\n62\n52\n77\nFGE (%)\n33\n41\n17 May (18B, ESBS)\nSubyearling\nYearling\nCoho\nSockeye\nchinook\nSteelhead\nLocation\nchinook\nL C R Tot\nL C R Tot\nL C R Tot\nL C R Tot\nL C R Tot\n2 2\nLevel 1\n1\n1\n415\n1\n1\n4 3 3 10\nLevel 2\n1135\nLevel 3\n4318\n1\n1\n1\n2\n3\n11\nLevel 4\n8 7 3 18\n7\n4\n11\n22\n4 7 7 18\n4228\nLevel 5\n7 8 8 23\n1\n1\n6 6 5 17\n1124\n11\nLevel 6\n5 7 8 20\nLevel 7\n2\n5\n1\n1\n2 1\n3\n23 15 21 59\n6 3 6 15\n4 4\nNet total\n31 31 23 85\n28\n38\n13\n95\nGatewell\n119\n43\n42\n16\n154\nTotal\n204\n90\n81\n62\n65\nFGE (%)\n58","42\nAppendix Table 1.--Continued.\n17 May (19B, ESTS)\nYearling\nSubyearling\nSockeye\nCoho\nSteelhead\nchinook\nchinook\nLocation\nL C R Tot\nC R Tot\nC R Tot\nL\nL\nL C R Tot\nL C R Tot\n1\n2\n1\nLevel 1\n1\n1\n1\n1\n5\n18\nLevel 2\n8\n5\n1\n1\n2\n2\n1\n3\nLevel 3\n1\n1\n112\n2\n2\n7 9 11 27\n3\n4\nLevel 4\n11\n323\n8\n1\n10 10 10 30\nLevel 5\n1\n1\n3 3\n6\n5 9 11 25\nLevel 6\n1\n3 2 2 7\n1\nLevel 7\n2 2 4\n132/\n6\n22\n35 36 41 112\n10\nNet total\n2\n4\n11\n19\n84\nGatewell\n6\n4\n17\n41\n196\nTotal\n33\n100\n65\n46\n43\nFGE (%)\n18 May (18B, ESBS)\nYearling\nSubyearling\nSockeye\nCoho\nSteelhead\nchinook\nchinook\nLocation\nC R Tot\nL C R Tot\nL\nC R Tot\nL C R Tot\nL\nL C R Tot\n1\nLevel 1\n1\n1\n1\n2\n1\n2\n1\n4\n6\nLevel 2\n2\n3\n1\n2\n3 1 5\nLevel 3\n2\n4\n5 3 2 10\n1\nLevel 4\n1\n1\n1\n1\n3\n3\n8\n9 8 9 26\n2\nLevel 5\n1\n1\n1315\n4\nLevel 6\n1\n3\n1\n1\n2\n3\nLevel 7\n1\n1113\n1\n1\n2\n5\n1\n5 8 7 20\n2\n22 12 21 55\nNet total\n9\n15\n14\n45\n63\nGatewell\n12\n16\n19\n65\n118\nTotal\n75\n94\n74\n69\n53\nFGE (%)\n18 May (19B, ESTS)\nYearling\nSubyearling\nSockeye\nCoho\nSteelhead\nchinook\nchinook\nLocation\nL C R Tot\nL C R Tot\nL C R Tot\nL C R Tot\nL\nC R Tot\n1 1\n2\nLevel 1\n4 5\n9\nLevel 2\n1\n1\n1\n3\n1\n4\n1\nLevel 3\n11\n2316\n5 8 1 14\nLevel 4\n1 1\n1\n9\n1\n4 7 5 16\nLevel 5\n1531\n9\nLevel 6\n2\n2\n1\n1\nLevel 7\n1 1\n3\n8 6 6 20\n1\n2\n18 26 11 55\nNet total\n1\n6\n2\n19\n49\nGatewell\n2\n6\n5\n39\n104\nTotal\n50\n100\n40\n49\n47\nFGE (%)","43\nAppendix Table 1.--Continued.\n19 May (18B, ESBS)\nSubyearlin\nYearling\nSockeye\nCoho\nchinook\nSteelhead\nLocation\nchinook\nL C R Tot\nC R Tot\nL C R Tot\nL\nL C R Tot\nL C R Tot\n1\n1\n1\nLevel 1\n1\n1\nLevel 2\n1\n3\n4\n1\n2 1\n3\nLevel 3\n2\n1\n1\n4\n1 2\n3\n2\n2\nLevel 4\n4 4 3 11\n1\n1\n1\n2\n4\n6\n1\nLevel 5\n6 5 4 15\n1\n2\n1\n1\n4 3 3 10\n3 1\n4\n1\nLevel 6\n3\nLevel 7\n1 2\n1\n1\n1\n9 4 4 17\n1\n2\n6\n1\n18 16 14 48\nNet total\n5\n10\n12\n76\n21\nGatewell\n11\n6\n18\n124\n38\nTotal\n91\n83\n55\n68\nFGE (%)\n61\n19 May (19B, ESTS)\nYearling\nSubyearling\nCoho\nSockeye\nchinook\nSteelhead\nLocation\nchinook\nL C R Tot\nL C R Tot\nL C R Tot\nL C R Tot\nL C R Tot\n1\n1\nLevel 1\n2\n2\n1\n1\nLevel 2\n3\n4\n2\n9\nLevel 3\n1\nLevel 4\n4\n4\n4\n12\n1\n2\nLevel 5\n6 5 3 14\n2\n1 1\n1\n1\nLevel 6\n4\n4\n9\n17\n1\n1\nLevel 7\n1\n1\n1\n1 1\n17 17 21 55\n2 2 4\n1 1\n2\n1\nNet total\n4\n5\n33\n9\n2\nGatewell\n6\n5\n88\n13\n4\nTotal\n83\n80\n69\n50\nFGE (%)\n38\n20 May (18B, ESBS)\nYearling\nSubyearling\nSockeye\nchinook\nSteelhead\nCoho\nLocation\nchinook\nC R Tot\nL C R Tot\nL\nL C R Tot\nL C R Tot\nL C R Tot\nLevel 1\n1\n1\n1\n1\n3\nLevel 2\n1\n4\n1\n1\n2\n9\n2\nLevel 3\n5 4\n2\n1\n1\n4\nLevel 4\n7\n8\n4\n19\n3\n2 8 7 17\n1\n1\n1\n3\n1\n2\nLevel 5\n2 5 9 16\n1\n2\n3\n1\n1\nLevel 6\n1\n1\nLevel 7\n1\n1\n222\n6\n6\n3\n4\n13\nNet total\n18 26 23\n67\n24\n4\n37\n21\n104\nGatewell\n24\n4\n27\n50\n171\nTotal\n78\n100\n100\n74\nFGE (%)\n61","44\nAppendix Table 1.--Continued.\n20 May (19B, ESTS)\nSubyearling\nYearling\nCoho\nSockeye\nLocation\nchinook\nchinook\nSteelhead\nL C R Tot\nL C R Tot\nL C R Tot\nL C R Tot\nL C R Tot\nLevel 1\n1\n1\n2\nLevel 2\n2 4\n6\n1 1\nLevel 3\n1\n4\n3\n8\nLevel 4\n7 5 3 15\n1\n1\n1 1\nLevel 5\n6 6 9 21\n1\n1\n1\n3\n4\nLevel 6\n6 1 6 13\n1\n1\n1\n2\n3\nLevel 7\n1\n1\n2\n1\n2\n2 2 4 8\n1\n1\n1 1\nNet total\n23 21 23 67\n1\n8\n5\nGatewell\n81\n20\n14\n6\n22\n22\n9\nTotal\n148\n64\n89\n83\nFGE (%)\n55\n91\n23 May (18B, ESBS)\nSubyearling\nYearling\nCoho\nSockeye\nLocation\nchinook\nchinook\nSteelhead\nL C R Tot\nL C R Tot\nL C R Tot\nL C R Tot\nL C R Tot\nLevel 1\nLevel 2\n4\n1\n2\n7\nLevel 3\n2\n5\n2\n9\n1\n1\nLevel 4\n10 7 3 20\n1\n1\n2\n2\nLevel 5\n12 8 11 31\n1\n3\n1\n1\n1 1\nLevel 6\n11 6 7 24\nLevel 7\n2\n2\n1\n1\n3\n1\n1\nNet total\n39 27 27 93\n1236\n1\n2\n25\n10\n2\nGatewell\n107\n31\n13\n2\n1\nTotal\n200\n77\n100\n0\nFGE (%)\n54\n81\n23 May (19B, ESTS)\nSubyearling\nYearling\nSteelhead\nCoho\nSockeye\nLocation\nchinook\nchinook\nL\nC R Tot\nL C R Tot\nL\nC\nR Tot\nL C R Tot\nL C R Tot\nLevel 1\n1\n1\n2\nLevel 2\n1\n1\n2\n4\n1\n1\nLevel 3\n3\n1\n4\n1\n1\n1\n1\n5 8 6 19\nLevel 4\n1\n1\nLevel 5\n14 6 8 28\n12 6 6 24\nLevel 6\nLevel 7\n1 1 2\n1\n2\n2\n32 26 25 83\n1 1\n1\nNet total\n2\n1\n52\n6\n7\nGatewell\n8\n2\n3\n135\n7\nTotal\n86\n88\n100\n33\nFGE (%)\n39","45\nAppendix Table 1.--Continued.\n24 May (18B, ESBS)\nYearling\nSubyearling\nSockeye\nSteelhead\nCoho\nchinook\nLocation\nchinook\nL C R Tot\nL C R Tot\nL C R Tot\nL C R Tot\nL C R Tot\nLevel 1\n1\n1\n1\nLevel 2\n1\n3 3 6 12\nLevel 3\n4 7 4 15\n2\n2\nLevel 4\n123\n4 7 6 17\n2\n2\nLevel 5\n11\n2\n3328\nLevel 6\n2\n1\n1\nLevel 7\n121 4\n2\n1124\n53\n8\n17 22 20 59\nNet total\n2\n9\n18\n12\n89\nGatewell\n2\n9\n22\n20\n148\nTotal\n100\n100\n82\n60\n60\nFGE (%)\n24 May (19B, ESTS)\nYearling\nSubyearling\nSockeye\nCoho\nSteelhead\nchinook\nLocation\nchinook\nL C R Tot\nL C R Tot\nL C R Tot\nL C R Tot\nL C R Tot\nLevel 1\n1\n1\n2\n5319\nLevel 2\n112\n1 2 1 4\nLevel 3\n1\n1\n8 6 5 19\nLevel 4\n1\n1\n8 4 10 22\nLevel 5\n11\n7631 16\n1\n1\nLevel 6\n1113 3\nLevel 7\n1\n1\n3126\n11\n30 22 21 73\nNet total\n1\n1\n8\n75\n8\nGatewell\n2\n1\n14\n148\n9\nTotal\n50\n100\n57\n89\nFGE (%)\n51\n25 May (18B, ESBS)\nYearling\nSubyearling\nCoho\nSockeye\nSteelhead\nchinook\nLocation\nchinook\nL C R Tot\nL C R Tot\nL C R Tot\nL C R Tot\nL C R Tot\n1\n1\nLevel 1\n1\n3\n1113\n112\n5128\nLevel 2\n213\n3137\nLevel 3\n1\n1\n1113\n313\n7\n4419\nLevel 4\n1\n1\n112,\n4\n145\nLevel 5\n1\n1\n1124\n1\n1\n1326\nLevel 6\n1\n1\nLevel 7\n11\n2\n2 5 4 11\n8 5 8 21\n15 13 11 39\nNet total\n12\n42\n5\n43\n67\nGatewell\n5\n14\n53\n64\n106\nTotal\n100\n86\n79\n67\n63\nFGE (%)","46\nAppendix Table 1.--Continued.\n25 May (19B, ESTS)\nSubyearling\nYearling\nLocation\nchinook\nchinook\nSteelhead\nCoho\nSockeye\nL C R Tot\nL C R Tot\nL C R Tot\nL\nC R Tot\nL C R Tot\nLevel 1\n112\nLevel 2\n2439\n11\n2\nLevel 3\n2\n1\n3\n1 1\n1 1\n2\nLevel 4\n4138\n2\n2\n3\n1\n4\nLevel 5\n8 6 4 18\n1 1\n2\n2\nLevel 6\n325\n42 6\n1\n1\n1\n1\nLevel 7\n4\n1\n5\n2\n1\n3\n1\n1\nNet total\n20 16 14 50\n3 5 7 15\n3 6 1 10\n1\n1\nGatewell\n27\n19\n33\n3\n4\nTotal\n77\n34\n43\n3\n5\nFGE (%)\n35\n56\n77\n100\n80\n26 May (18B, ESBS)\nSubyearling\nYearling\nLocation\nchinook\nchinook\nSteelhead\nCoho\nSockeye\nL C R Tot\nL C R Tot\nL C R Tot\nL C R Tot\nL C R Tot\nLevel 1\n2\n2\nLevel 2\n2125\n1\n1\n1\n3\n1\n1\n1 1\nLevel 3\n2114\n2\n2\n1\n1\nLevel 4\n3317\n1\n1\n11\n11\nLevel 5\n6 3 3 12\n1214\n1\n1\n1 1\nLevel 6\n2215\n1113\nLevel 7\n1\n1\nNet total\n17 10 8 35\n4 6 3 13\n1315\n3 3\nGatewell\n53\n30\n35\n8\n3\nTotal\n88\n43\n40\n8\n6\nFGE (%)\n60\n70\n88\n100\n50\n26 May (19B, ESTS)\nSubyearling\nYearling\nLocation\nchinook\nchinook\nSteelhead\nCoho\nSockeye\nL C R Tot\nL C R Tot\nL C R Tot\nL C R Tot\nL C R Tot\nLevel 1\nLevel 2\n1\n1\n1\n1\n11\nLevel 3\n2\n2\n112\n1 1\nLevel 4\n1427\n1113\nLevel 5\n4 2 4 10\n1\n1\n1\n1\n11\nLevel 6\n336\n1236\n213\n2\n2\nLevel 7\n1\n1\n2 4 4 10\nNet total\n6 11 9 26\n2439\n2\n2 4\n2\nGatewell\n53\n11\n18\n8\nTotal\n79\n20\n28\n2\n12\nFGE (%)\n67\n55\n64\n100\n67","47\nAppendix Table 1.--Continued.\n27 May (18B, ESBS)\nYearling\nSubyearling\nSockeye\nCoho\nSteelhead\nchinook\nchinook\nLocation\nL C R Tot\nL C R Tot\nC R Tot\nL\nC R Tot\nC R Tot\nL\nL\n1\n1\n1\n1\nLevel 1\n1\n2\n1\n11\nLevel 2\n2\n1\n1\nLevel 3\n1\n1\n1\n1\n3\n1\n2\n1\n2\n3\n241\n7\nLevel 4\n2\n2\n4\n3\n7\n1\n3\n7 2 3 12\nLevel 5\n2\n2\n1\n1\n3\nLevel 6\n2\n1\n1\nLevel 7\n1 1 2\n2 4 6 12\n3\n4\n5\n12\n12 9 5 26\nNet total\n9\n8\n34\n36\n69\nGatewell\n11\n8\n46\n48\n95\nTotal\n82\n100\n74\n75\n73\nFGE (%)\n27 May (19B, ESTS)\nYearling\nSubyearling\nSockeye\nCoho\nSteelhead\nchinook\nchinook\nLocation\nL C R Tot\nL C R Tot\nL C R Tot\nL C R Tot\nL C R Tot\nLevel 1\n1\n1\n1\n1 1\n1\n2 3 3 8\nLevel 2\n1 1\nLevel 3\n2\n2\n4\n2\n1\n1\nLevel 4\n1\n1\n1\n1\n2 8 3 13\nLevel 5\n1\n1\n2 2 4\n2136\nLevel 6\n1\n1\n2\n2\nLevel 7\n3\n2 1\n1\n2\n4 5 9\n1\n10 13 10 33\nNet total\n8\n3\n22\n25\n49\nGatewell\n11\n3\n24\n34\n82\nTotal\n73\n100\n92\n74\n60\nFGE (%)\n20 June (18B, ESBS)\nYearling\nSubyearling\nSockeye\nCoho\nSteelhead\nchinook\nchinook\nLocation\nL C R Tot\nL C R Tot\nL C R Tot\nC R Tot\nL\nL C R Tot\nLevel 1\n1 1\n3 2 3 8\nLevel 2\n5 3 2 10\nLevel 3\n5 2 5 12\nLevel 4\n13 5 6 24\nLevel 5\n3 4 6 13\nLevel 6\n1\n1\nLevel 7\n1 1\n29 17 22\n68\nNet total\n1\n6\n8\n103\nGatewell\n1\n6\n9\n171\nTotal\n100\n100\n89\n60\nFGE (%)","48\nAppendix Table 1.--Continued.\n20 June (19B, ESTS)\nYearling\nSubyearling\nSteelhead\nCoho\nSockeye\nLocation\nchinook\nchinook\nL C R Tot\nL C R Tot\nL C R Tot\nL C R Tot\nL C R Tot\nLevel 1\n2\n2\nLevel 2\n2\n3\n1\n6\nLevel 3\n2\n1\n3\nLevel 4\n6 6 1 13\nLevel 5\n7 7 7 21\n1\n1\n1 1\nLevel 6\n6 3\n9\nLevel 7\n1\n1\n1\n1\n1 1\nNet total\n26 19 10\n55\n4\nGatewell\n31\n4\n1\n86\n1\nTotal\n0\nFGE (%)\n36\n0\n100\n21 June (18B, ESBS)\nYearling\nSubyearling\nSockeye\nchinook\nSteelhead\nCoho\nLocation\nchinook\nL\nC R Tot\nL C R Tot\nL C R Tot\nL C R Tot\nL\nC R Tot\nLevel 1\n2\n2\nLevel 2\n2\n1\n5\n8\n1\n1\n1\n1\nLevel 3\n6\n1\n1\n8\n1\n1\nLevel 4\n4 5 6 15\nLevel 5\n4\n9\n4\n17\n1\n1\nLevel 6\n4 4 8 16\nLevel 7\n2\n2\n1\n1\nNet total\n22\n22\n24\n68\n1\n1\n1\n3\n132\n6\n1\nGatewell\n1\n1\nTotal\n200\n9\n0\nFGE (%)\n66\n67\n100\n21 June (19B, ESTS)\nSubyearling\nYearling\nSockeye\nchinook\nSteelhead\nCoho\nLocation\nchinook\nL C R Tot\nL C R Tot\nL C R Tot\nL C R Tot\nL\nC R Tot\n1\n2\nLevel 1\n1\nLevel 2\n2\n2\nLevel 3\n1\n2\n3\nLevel 4\n3\n5\n1\n9\nLevel 5\n4\n7\n3\n14\n3\nLevel 6\n2\n2\n7\n2\nLevel 7\n1\n1\n12 17 10 39\nNet total\n51\n1\nGatewell\n90\n1\nTotal\n57\n100\nFGE (%)","49\nAppendix Table 1.--Continued.\n22 June (18B, ESBS)\nSubyearling\nYearling\nLocation\nchinook\nchinook\nSteelhead\nCoho\nSockeye\nL C R Tot\nL C R Tot\nL C R Tot\nL C R Tot\nL C R Tot\nLevel 1\nLevel 2\n3 1\n4\nLevel 3\n2\n3\n5\nLevel 4\n10\n8\n3\n21\nLevel 5\n9 2 3 14\n1\n1\nLevel 6\n2\n2\n1\n5\n1\n1\n2\nLevel 7\n1\n1\n2\nNet total\n27 13 11 51\n2\n1\n3\nGatewell\n63\n2\n2\nTotal\n114\n5\n2\nFGE (%)\n55\n40\n100\n22 June (19B, ESTS)\nSubyearling\nYearling\nLocation\nchinook\nchinook\nSteelhead\nCoho\nSockeye\nL C R Tot\nL C R Tot\nL C R Tot\nL C R Tot\nL C R Tot\nLevel 1\nLevel 2\n2\n3\n1\n6\nLevel 3\n4\n1\n5\nLevel 4\n2\n1\n4\n7\nLevel 5\n3\n4\n3\n10\n1\n1\nLevel 6\n3\n4\n1\n8\nLevel 7\n1\n1\nNet total\n15 13 9 37\n1\n1\nGatewell\n69\n5\nTotal\n106\n5\n1\nFGE (%)\n65\n100\no\n23 June (18B, ESBS)\nSubyearling\nYearling\nLocation\nchinook\nchinook\nSteelhead\nCoho\nSockeye\nL C R Tot\nL C R Tot\nL C R Tot\nL C R Tot\nL C R Tot\nLevel 1\nLevel 2\n1\n1\n2\nLevel 3\n2\n1\n3\n6\nLevel 4\n3\n3\n1\n7\nLevel 5\n2 5 4 11\nLevel 6\n1 1 2 4\n1 1\nLevel 7\n2 1\n3\nNet total\n11 11 11 33\n1 1\nGatewell\n50\n1\nTotal\n83\n1\n1\nFGE (%)\n60\n100\n0","50\nAppendix Table 1.--Continued.\n23 June (19B, ESTS)\nYearling\nSubyearling\nSteelhead\nCoho\nSockeye\nLocation\nchinook\nchinook\nL C R Tot\nL C R Tot\nL C R Tot\nL C R Tot\nL C R Tot\nLevel 1\n1\n1\nLevel 2\n3\n2\n1\n6\nLevel 3\n1\n3\n4\nLevel 4\n5\n5\n3\n13\n1\n1\nLevel 5\n7\n8\n5\n20\n2\nLevel 6\n3\n5\n7\n15\n1\n1\nLevel 7\n2\n2\nNet total\n20 22 19\n61\n2\n1\n3\n1\nGatewell\n53\n2\n3\n1\n5\n3\nTotal\n114\n100\n100\nFGE (%)\n46\n40\n24 June (18B, ESBS)\nSubyearling\nYearling\nCoho\nSockeye\nLocation\nchinook\nchinook\nSteelhead\nL C R Tot\nC R Tot\nL C R Tot\nL C R Tot\nL\nC\nR Tot\nL\nLevel 1\n1 1\nLevel 2\n5 1\n6\nLevel 3\n1\n3\n4\nLevel 4\n6\n3\n9\nLevel 5\n2\n1\n3\nLevel 6\n3\n3\nLevel 7\nNet total\n12\n6\n8\n26\n1\n7\n3\nGatewell\n81\n1\n3\nTotal\n107\n7\n100\nFGE (%)\n76\n100\n100\n24 June (19B, ESTS)\nSubyearling\nYearling\nSockeye\nchinook\nSteelhead\nCoho\nLocation\nchinook\nL C R Tot\nL C R Tot\nL\nC R Tot\nL C R Tot\nL C R Tot\n2\nLevel 1\n2\nLevel 2\n1\n1\nLevel 3\n1\n2\n3\n5\nLevel 4\n3\n1\n1\nLevel 5\n4 3 4 11\n1\n2\nLevel 6\n1\n2\n2\n5\n1\n1\nLevel 7\n2\n2\n1\n12 8 9 29\n2\n1\n3\nNet total\n43\n5\nGatewell\n72\n8\nTotal\n63\nFGE (%)\n60","51\nAppendix Table 1.--Continued.\n25 June ( 18B, ESBS)\nSubyearling\nYearling\nCoho\nSockeye\nLocation\nchinook\nchinook\nSteelhead\nL C R Tot\nL C R Tot\nL C R Tot\nL\nC\nR Tot\nL C R Tot\nLevel 1\n1\n1\n2\nLevel 2\n1\n1\n2\nLevel 3\n2\n1\n1\n4\nLevel 4\n8 8 6 22\n1\n1\nLevel 5\n12\n4\n9\n25\nLevel 6\n7\n7\n5\n19\n2\n2\nLevel 7\n1\n1\n2\n4\nNet total\n31 22 25\n78\n1\n2\n3\n2\nGatewell\n68\n5\n8\n2\nTotal\n146\nFGE (%)\n47\n63\n100\n25 June (19B, ESTS)\nSubyearling\nYearling\nCoho\nSockeye\nLocation\nchinook\nchinook\nSteelhead\nL C R Tot\nL C R Tot\nL\nC R Tot\nL C R Tot\nL C R Tot\nLevel 1\nLevel 2\n1 2\n3\nLevel 3\n3\n3\nLevel 4\n4\n6\n4\n14\nLevel 5\n10\n9\n8\n27\n1\n1\nLevel 6\n10\n8\n6\n24\n1\n1\nLevel 7\n1\n1\nNet total\n28\n25\n19\n72\n1\n1\n2\n1\n3\nGatewell\n61\n1\nTotal\n133\n5\n100\nFGE (%)\n46\n60\n26 June (18B, ESBS)\nSubyearling\nYearling\nSockeye\nchinook\nSteelhead\nCoho\nLocation\nchinook\nL C R Tot\nL C R Tot\nL C R Tot\nL C R Tot\nL C R Tot\nLevel 1\n1 1\n1\n1\nLevel 2\n4\n4\nLevel 3\n5\n3\n2\n10\nLevel 4\n6\n7\n3\n16\nLevel 5\n8\n8\n3\n19\n1\n1\nLevel 6\n6\n7\n8\n21\n1\n1\nLevel 7\n2 4 1 7\n1\n31 29 18 78\n2\n2\n1\nNet total\n2\n2\nGatewell\n89\n3\n167\n4\nTotal\n50\n67\nFGE (%)\n53","52\nAppendix Table 1.--Continued.\n26 June (19B, ESTS)\nSubyearling\nYearling\nLocation\nchinook\nchinook\nSteelhead\nCoho\nSockeye\nL C R Tot\nL C R Tot\nL C R Tot\nL C R Tot\nL C R Tot\nLevel 1\n1\n1\nLevel 2\n4\n2\n2\n8\nLevel 3\n5\n5\nLevel 4\n9\n11\n5\n25\n1\n1\nLevel 5\n12 12 12 36\n1\n1\nLevel 6\n8 14 9 31\n1\n1\n1\n3\nLevel 7\n4 1 2 7\nNet total\n37 45 30 112\n3\n1\n1\n5\n1\n1\nGatewell\n84\n6\n1\nTotal\n196\n11\n1\n1\nFGE (%)\n43\n55\n0\n100\n27 June (18B, ESBS)\nSubyearling\nYearling\nLocation\nchinook\nchinook\nSteelhead\nCoho\nSockeye\nL C R Tot\nL C R Tot\nL C R Tot\nL C R Tot\nL C R Tot\nLevel 1\n1\n1\n2\nLevel 2\n4\n3\n7\nLevel 3\n3 3 6 12\n1\n1\nLevel 4\n5 13 8 26\n2\n2\n1\n1\n1\n1\nLevel 5\n10 13 11 34\n1 1\n2\nLevel 6\n16 17 11 44\nLevel 7\n3 3\n6\nNet total\n38 53 40 131\n3\n1\n1\n5\n1\n1\n1\n1\nGatewell\n110\n4\n3\nTotal\n241\n9\n4\n1\nFGE (%)\n46\n44\n75\n0\n27 June (19B, ESTS)\nSubyearling\nYearling\nLocation\nchinook\nchinook\nSteelhead\nCoho\nSockeye\nL C R Tot\nL\nC\nR Tot\nL C R Tot\nL C R Tot\nL C R Tot\nLevel 1\n1\n1\n1\n3\nLevel 2\n5\n1\n2\n8\nLevel 3\n5 4 4 13\n1 1\nLevel 4\n8 13 13 34\nLevel 5\n15 14 16 45\n1\n1\nLevel 6\n13 14 15 42\n2\n2\n1\n1\nLevel 7\n2 2 2 6\nNet total\n49 49 53 151\n1\n3\n4\n1\n1\nGatewell\n139\n3\n4\n1\n1\nTotal\n290\n7\n4\n1\n2\nFGE (%)\n48\n43\n100\n100\n50","53\nAppendix Table 1. .--Continued.\n28 June ( 18B, ESBS)\nSubyearling\nYearling\nSockeye\nCoho\nSteelhead\nchinook\nLocation\nchinook\nL C R Tot\nC R Tot\nL C R Tot\nL\nL C R Tot\nL C R Tot\nLevel 1\n1\n1\nLevel 2\n5\n1\n3\n9\nLevel 3\n2\n4\n6\nLevel 4\n3\n1\n2\n6\nLevel 5\n1\n1\n1\n3\n4\nLevel 6\n1\n2\n1\nLevel 7\n1 1\n13 5 12 30\nNet total\n2\n6\n62\nGatewell\n6\n2\n92\nTotal\n100\n100\nFGE (%)\n67\n28 June (19B, ESTS)\nYearling\nSubyearling\nSockeye\nCoho\nchinook\nSteelhead\nLocation\nchinook\nL C R Tot\nL C R Tot\nL\nC\nR Tot\nL\nC R Tot\nL C R Tot\nLevel 1\n1\nLevel 2\n1\nLevel 3\n1\n1\n2\nLevel 4\n1\n1\n3\n5\n1 1\n4 2 6 12\nLevel 5\n1 1\n3\nLevel 6\n3\n3\n9\nLevel 7\n2\n2\n2\n2\n9 9 13 31\nNet total\n1\n2\n68\n10\nGatewell\n1\n4\nTotal\n99\n10\n100\n50\n100\nFGE (%)\n69\n29 June (18B, ESBS)\nYearling\nSubyearling\nSockeye\nchinook\nSteelhead\nCoho\nLocation\nchinook\nL C R Tot\nC R Tot\nL C R Tot\nL C R Tot\nL C R Tot\nL\nLevel 1\n2\n2\nLevel 2\n4\n2\n3\n9\nLevel 3\n2\n2\n4\n3\nLevel 4\n1\n2\n4 10 6\nLevel 5\n20\n1\n1\nLevel 6\nLevel 7\n1\n1\n13 14 13\n40\nNet total\n1\n67\nGatewell\n1\n107\nTotal\n100\n63\nFGE (%)","54\nAppendix Table 1.--Continued.\n29 June (19B, ESTS)\nSubyearling\nYearling\nSockeye\nCoho\nLocation\nchinook\nchinook\nSteelhead\nL C R Tot\nL C R Tot\nL C R Tot\nL C R Tot\nL C R Tot\nLevel 1\nLevel 2\n1\n1\n1\n3\nLevel 3\n5\n1\n1\n7\nLevel 4\n1 4 3 8\n1\n1\nLevel 5\n3 5 8 16\nLevel 6\n3 4 6 13\n1 1 1 3\nLevel 7\n1\nNet total\n14 16 20 50\n1\n63\nGatewell\n1\n113\nTotal\n56\n0\nFGE (%)\n30 June (18B, ESBS)\nYearling\nSubyearling\nCoho\nSockeye\nchinook\nSteelhead\nLocation\nchinook\nL C R Tot\nL C R Tot\nL C R Tot\nL C R Tot\nL\nC R Tot\nLevel 1\nLevel 2\n1\n1\n2\nLevel 3\n2 1 2 5\nLevel 4\n1\n3\n4\nLevel 5\n4 1 5 10\nLevel 6\n111\n3\nLevel 7\n8 4 12 24\nNet total\n62\nGatewell\n86\nTotal\nFGE (%)\n72\n30 June (19B, ESTS)\nYearling\nSubyearling\nCoho\nSockeye\nchinook\nSteelhead\nLocation\nchinook\nL C R Tot\nL C R Tot\nL C R Tot\nL C R Tot\nL C R Tot\nLevel 1\n4\nLevel 2\n1\n1\n2\nLevel 3\n1\n1\n1\n3\n8 1 3 12\n1\n1\nLevel 4\n6 2 5 13\nLevel 5\n8 4 2 14\nLevel 6\nLevel 7\n1\n1\n2\n25 9 14 48\n1\n1\nNet total\n2\n1\n1\n59\nGatewell\n1\n1\n3\n107\nTotal\n67\n100\n100\n55\nFGE (%)","55\nAppendix Table 1.--Continued.\n1 July (18B, ESBS)\nYearling\nSubyearling\nSockeye\nSteelhead\nCoho\nchinook\nLocation\nchinook\nL C R Tot\nL C R Tot\nL C R Tot\nL C R Tot\nL C R Tot\nLevel 1\nLevel 2\nLevel 3\n2\n2\n4\n9\nLevel 4\n4\n2\n3\n7\n4\n17\nLevel 5\n6\nLevel 6\n6\n6\n12\nLevel 7\n1\n1\n12 18 13\n43\nNet total\n1\n1\n55\nGatewell\n1\n1\n98\nTotal\n100\n100\n56\nFGE (%)\n1 July (19B, ESTS)\nYearling\nSubyearling\nSockeye\nCoho\nSteelhead\nchinook\nchinook\nLocation\nL C R Tot\nL C R Tot\nL C R Tot\nL C R Tot\nL\nC\nR Tot\nLevel 1\nLevel 2\n2\n1\n3\nLevel 3\n1\n1\n2\n3\n12 5 8 25\n1\n2\nLevel 4\n8 7 7 22\n1\n1\nLevel 5\n6 13 3 22\nLevel 6\nLevel 7\n2\n3\n5\n1 3\n4\n25\n23\n79\nNet total\n31\n2\n1\n67\nGatewell\n2\n5\n146\nTotal\n100\n20\n46\nFGE (%)\n5 July (18B, ESBS)\nYearling\nSubyearling\nCoho\nSockeye\nSteelhead\nchinook\nchinook\nLocation\nL C R Tot\nL C R Tot\nL C R Tot\nL\nC R Tot\nL C R Tot\nLevel 1\n1\n1\n2\n4\nLevel 2\n1\n1\n3 3 5 11\nLevel 3\n6 9 5 20\nLevel 4\n8 10 6 24\n1\n1\nLevel 5\n1\n1\n1\n8 10 10 28\n1\nLevel 6\n4\nLevel 7\n2 2\n1\n1\n29 35 28\n92\n1 1\n2\nNet total\n1\n1\n71\nGatewell\n2\n3\n163\nTotal\n50\n33\n44\nFGE (%)","56\nAppendix Table 1.--Continued.\n5 July (19B, ESTS)\nSubyearling\nYearling\nLocation\nchinook\nchinook\nSteelhead\nCoho\nSockeye\nL\nC\nR Tot\nL C R Tot\nL C R Tot\nL C R Tot\nL C R Tot\nLevel 1\n1\n1\n2\nLevel 2\n2\n2\n4\nLevel 3\n2 5 2 9\nLevel 4\n18\n21\n6\n45\n1 1\nLevel 5\n18 14 23 55\n1\n1\nLevel 6\n8\n21\n17\n46\n2\n1\n1\n4\nLevel 7\n5 1 4 10\nNet total\n54 62 55 171\n2\n1\n2\n5\n1 1\nGatewell\n132\n1\n1\nTotal\n303\n6\n2\nFGE (%)\n44\n17\n50\n6 July (18B, ESBS)\nSubyearling\nYearling\nLocation\nchinook\nchinook\nSteelhead\nCoho\nSockeye\nL\nC R Tot\nL\nC R Tot\nL C R Tot\nL C R Tot\nL C R Tot\nLevel 1\n1\n1\nLevel 2\n3\n2\n1\n6\nLevel 3\n1\n5\n3\n9\n1\n1\nLevel 4\n10 17 9 36\nLevel 5\n8\n12\n9\n29\nLevel 6\n21\n18\n16\n55\nLevel 7\n2\n3\n5\nNet total\n46\n54\n41\n141\n1\n1\nGatewell\n76\n3\n1\nTotal\n217\n4\n1\nFGE (%)\n35\n75\n100\n6 July (19B, ESTS)\nSubyearling\nYearling\nLocation\nchinook\nchinook\nSteelhead\nCoho\nSockeye\nL C R Tot\nL C R Tot\nL C R Tot\nL C R Tot\nL C R Tot\nLevel 1\nLevel 2\n4\n1\n5\nLevel 3\n8 7 4 19\nLevel 4\n20 17 17 54\nLevel 5\n31 20 27 78\nLevel 6\n23\n20\n21\n64\n1\n1\nLevel 7\n5 3 4 12\n87 71 74 232\nNet total\n1 1\nGatewell\n141\n1\nTotal\n373\n2\nFGE (%)\n38\n50","57\nAppendix Table 1.--Continued.\n7 July (18B, ESBS)\nYearling\nSubyearling\nSockeye\nSteelhead\nCoho\nchinook\nLocation\nchinook\nL C R Tot\nL C R Tot\nL C R Tot\nL C R Tot\nL C R Tot\nLevel 1\n2\n1\n3\nLevel 2\n1 1\n2\nLevel 3\n2 1\n3\nLevel 4\n3\n4\n4\n11\nLevel 5\n2\n2\n7\n11\nLevel 6\n8\n7\n15\nLevel 7\n1\n1\n2\n18 16 13 47\nNet total\n1\n1\n56\nGatewell\n1\n1\nTotal\n103\n100\nFGE (%)\n54\n100\n7 July (19B, ESTS)\nYearling\nSubyearling\nCoho\nSockeye\nchinook\nSteelhead\nLocation\nchinook\nC R Tot\nL C R Tot\nL C R Tot\nL C R Tot\nL C R Tot\nL\nLevel 1\n1\n1\nLevel 2\nLevel 3\n2\n2\n4\n15\n1\n1\nLevel 4\n6\n6\n3\n11 13 9 33\nLevel 5\nLevel 6\n8 10 11 29\nLevel 7\n2\n3\n3\n8\n1\nNet total\n30 32 28 90\n1\n76\n1\n3\nGatewell\n3\nTotal\n166\n2\n50\n100\nFGE (%)\n46\n8 July (18B, ESBS)\nYearLing\nSubyearling\nchinook\nSteelhead\nCoho\nSockeye\nLocation\nchinook\nL C R Tot\nL C R Tot\nL C R Tot\nL\nC R Tot\nL\nC R Tot\nLevel 1\nLevel 2\n2\n2\n1\n1\nLevel 3\n1\n1\n2\n1\n1\n11 9 2 22\nLevel 4\nLevel 5\n14 17 11 42\n13 22 16 51\n1\n1\nLevel 6\nLevel 7\n1\n5\n2\n8\n41 54 32 127\n1\n1\n1 1\n2\nNet total\n6\n35\nGatewell\n8\n162\n1\nTotal\n75\n22\n0\nFGE (%)","58\nAppendix Table 1.--Continued.\n8 July (19B, ESTS)\nSubyearling\nYearling\nLocation\nchinook\nchinook\nSteelhead\nCoho\nSockeye\nL C R Tot\nL C R Tot\nL C R Tot\nL C R Tot\nL C R Tot\nLevel 1\nLevel 2\n3\n1\n2\n6\nLevel 3\n1\n1\nLevel 4\n17\n19\n9\n45\nLevel 5\n30\n35\n30\n95\nLevel 6\n34\n30\n15\n79\nLevel 7\n5 7 7 19\n1 1\nNet total\n90 92 63 245\n1 1\nGatewell\n115\n1\n1\n1\nTotal\n360\n2\n1\n1\nFGE (%)\n32\n50\n100\n100\n11 July (18B, ESBS)\nSubyearling\nYearling\nLocation\nchinook\nchinook\nSteelhead\nCoho\nSockeye\nL\nC\nR Tot\nL C R Tot\nL C R Tot\nL C R Tot\nL C R Tot\nLevel 1\nLevel 2\n3\n3\nLevel 3\n2\n2\n1\n5\nLevel 4\n5\n6\n6\n17\nLevel 5\n8 9 4 21\nLevel 6\n6\n8\n5\n19\nLevel 7\n1\n1\n1\n3\nNet total\n25 26 17 68\nGatewell\n39\nTotal\n107\nFGE (%)\n36\n11 July (19B, ESTS)\nSubyearling\nYearling\nLocation\nchinook\nchinook\nSteelhead\nCoho\nSockeye\nL C R Tot\nL C R Tot\nL C R Tot\nL C R Tot\nL C R Tot\nLevel 1\nLevel 2\n1\n4\n5\nLevel 3\n1 3\n4\nLevel 4\n16\n10\n4\n30\nLevel 5\n13\n17\n4\n34\nLevel 6\n20\n19\n9\n48\nLevel 7\n3 1 6 10\nNet total\n54 50 27 131\nGatewell\n87\nTotal\n218\nFGE (%)\n40","59\nAppendix Table 1.--Continued.\n12 July (18B, ESBS)\nSubyearling\nYearling\nLocation\nchinook\nchinook\nSteelhead\nCoho\nSockeye\nL C R Tot\nL C R Tot\nL C R Tot\nL\nC R Tot\nL C R Tot\nLevel 1\n2\n2\nLevel 2\n2\n1\n2\n5\nLevel 3\n5\n4\n9\nLevel 4\n6\n5\n5\n16\nLevel 5\n9\n9\n3\n21\nLevel 6\n1\n7\n2\n10\nLevel 7\n1\n1\nNet total\n23 22 19 64\nGatewell\n122\nTotal\n186\nFGE (%)\n66\n12 July (19B, ESTS)\nSubyearling\nYearling\nLocation\nchinook\nchinook\nSteelhead\nCoho\nSockeye\nL\nC R Tot\nL C R Tot\nL C R Tot\nL C R Tot\nL C R Tot\nLevel 1\nLevel 2\n2\n2\nLevel 3\n2\n1\n3\nLevel 4\n9\n8\n5\n22\nLevel 5\n16 21 13 50\nLevel 6\n24 8 17 49\nLevel 7\n4\n4\n4\n12\nNet total\n55 43 40 138\nGatewell\n114\n1\nTotal\n252\n1\nFGE (%)\n45\n100\n13 July (18B, ESBS)\nSubyearling\nYearling\nLocation\nchinook\nchinook\nSteelhead\nCoho\nSockeye\nL C R Tot\nL C R Tot\nL\nC R Tot\nL C R Tot\nL C R Tot\nLevel 1\n1\n1\n2\n4\nLevel 2\n3\n1\n2\n6\nLevel 3\n11 4 4 19\nLevel 4\n11\n1\n7\n19\nLevel 5\n27 14 10 51\nLevel 6\n7 8 5 20\nLevel 7\n2\n2\nNet total\n60 29 32 121\nGatewell\n150\nTotal\n271\nFGE (%)\n55","60\nAppendix Table 1.--Continued.\n13 July (19B, ESTS)\nSubyearling\nYearling\nLocation\nchinook\nchinook\nSteelhead\nCoho\nSockeye\nL C R Tot\nL C R Tot\nL C R Tot\nL C R Tot\nL C R Tot\nLevel 1\nLevel 2\n8 2\n10\nLevel 3\n3 4 1 8\nLevel 4\n8 22 3 33\nLevel 5\n22 16 19 57\nLevel 6\n17 22 10 49\nLevel 7\n5 6 3 14\nNet total\n63 72 36 171\nGatewell\n103\nTotal\n274\nFGE (%)\n38\n14 July (18B, ESBS)\nSubyearling\nYearling\nLocation\nchinook\nchinook\nSteelhead\nCoho\nSockeye\nL C R Tot\nL C R Tot\nL C R Tot\nL C R Tot\nL\nC R Tot\nLevel 1\nLevel 2\n1\n1\n2\nLevel 3\n1\n2\n3\nLevel 4\n2\n2\n2\n6\nLevel 5\n4 6 2 12\nLevel 6\n4 7 2 13\nLevel 7\n1 2\n3\nNet total\n12 18\n9\n39\nGatewell\n27\nTotal\n66\nFGE (%)\n4.1\n14 July (19B, ESTS)\nSubyearling\nYearling\nLocation\nchinook\nchinook\nSteelhead\nCoho\nSockeye\nL\nC\nR Tot\nL C R Tot\nL C R Tot\nL\nC R Tot\nL C R Tot\nLevel 1\nLevel 2\n2\n2\nLevel 3\n2\n1\n3\nLevel 4\n4 5 3 12\nLevel 5\n10 8 4 22\nLevel 6\n7 5 6 18\nLevel 7\n3\n1\n1\n5\nNet total\n28 19 15\n62\nGatewell\n43\nTotal\n105\nFGE (%)\n41","Table 2. Descaling data from fish guidance efficiency and descaling tests at The\nDalles Dam, 1994 (ESBS = extended-length submersible bar screen, ESTS =\nextended-length submersible traveling screen, STS = standard-length\n0.0\n8.8\n28.6\n0.0\n6.7\n7.7\n0.0\n0.0\n0.0\n0.0\n%\n%\nSockeye\nSockeye\nCatch\nCatch\n3\n80\n14\n9\n15\n13\n9\n5\n4\n2\nDesc.\nDesc.\n7\n4\n1\n1\n3.2\n0.0\n3.0\n0.0\n0.0\n0.0\n0.0\n0.0\n0.0\n1.1\n%\n%\nDesc. Catch\nDesc. Catch\nCoho\nCoho\n38\n31\n17\n89\n33\n15\n10\n24\n2\n9\n1\n1\n1\n33.3\n0.0\n0.0\n0.0\n0.0\n3.4\n3.6\n0.0\n8.3\n0.0\n10.0\n5.6\n20.0\n0.0\n0.0\n0.0\n0.0\n0.0\n0.0\n0.0\n0.0\n0.0\n0.0\n2.8\n0.0\n9.1\n%\n%\nSteelhead\nSteelhead\nCatch\nCatch\nsubmersible traveling screen) .\n6\n9\n22\n18\n20\n5\n11\n91\n29\n28\n14\n12\n10\n21\n18\n1\n2\n5\n5\n1\n2\n4\n5\n7\n36\n21\nDesc.\nDesc.\n1\n3\n2\n1\n1\n1\n1\n1\n1\n0.8\n2.2\n1.8\n1.7\n3.4\n4.6\n0.0\n0.0\n0.0\n0.0\n4.0\n0.0\n2.0\n3.6\n0.0\n1.8\n4.9\n5.9\n8.6\n3.0\n2.9\n0.9\n2.9\n2.2\n2.1\n11.1\nUnit 18, Slot B : ESBS (30% porosity)\n%\nUnit 18, Slot A: ESBS (25% porosity)\n%\nYearling\nYearling\nchinook\nchinook\nCatch\nCatch\n220\n336\n172\n139\n118\n137\n112\n50\n28\n115\n54\n119\n65\n95\n45\n25\n114\n183\n51\n35\n67\n105\n21\n37\n25\n12\nDesc.\nDesc.\n3\n2\n2\n6\n4\n3\n2\n9\n3\n3\n2\n3\n2\n7\n5\n3\n1\n1\n1\n1\n0.0\n0.0\n0.0\n0.0\n0.0\n0.0\n0.0\n0.0\n0.0\n0.0\n0.0\n0.0\n0.0\n0.0\n0.0\n0.0\n0.0\n0.0\n%\n%\nSubyearling\nSubyearling\nCatch\nchinook\nchinook\nCatch\n2\n2\n2\n4\n30\n59\n84\n119\n21\n63\n76\n104\n107\n89\n1\n1\n1\n1\nDesc.\nDesc.\nAppendix\n18 April\n19 April\n20 April\n21 April\n22 April\n25 April\n26 April\n27 April\n28 April\n29 April\n30 April\n18 April\n19 April\n20 April\n21 April\n22 April\n13 May\n14 May\n15 May\n16 May\n17 May\n18 May\n19 May\n20 May\n23 May\n24 May\nTest\ndate\nTest\ndate","%\n16.7\n33.3\n0.0\n0.0\n11.1\n%\nSockeye\nCatch\nSockeye\nCatch\n12\n3\n9\n1\n1\nDesc.\nDesc.\n2\n1\n1\n%\n0.0\n0.0\n0.0\n%\nDesc. Catch\nCatch\nCoho\nCoho\n5\n8\n8\nDesc.\n16.7\n50.0\n0.0\n0.0\n0.0\n0.0\n0.0\n0.0\n0.0\n0.0\n33.3\n0.0\n%\n0.0\n0.0\n5.9\n0.0\n100.0\n0.0\n0.0\n0.0\n50.0\n%\nSteelhead\nCatch\nSteelhead\nCatch\n6\n2\n6\n1\n6\n3\n2\n1\n1\n1\n1\n1\n42\n6\n2\n3\n2\n2\n35\n34\n1\nDesc.\nDesc.\n1\n1\n2\n1\n1\n1\n2.2\n0.0\n0.0\n0.0\n0.0\n0.0\n0.0\n0.0\n0.0\n0.0\n0.0\n0.0\n0.0\n0.0\n0.0\nUnit 18, Slot C: ESBS (35% porosity)\n%\n2.3\n6.7\n8.3\n12.5\n0.0\n0.0\nUnit 18, Slot B : ESBS (30% porosity)\n%\nYearling\nchinook\nYearling\nCatch\nchinook\nCatch\n29\n45\n22\n52\n131\n6\n1\n1\n3\n1\n43\n30\n36\n8\n6\n2\n7\n1\n5\n2\n4\nDesc.\nAppendix Table 2 --Continued.\nDesc.\n1\n2\n3\n1\n1\n0.0\n0.0\n0.0\n0.0\n2.5\n1.3\n0.0\n2.6\n1.8\n5.7\n0.0\n4.5\n1.6\n3.6\n0.0\n%\n0.0\n4.9\n0.0\n1.6\n2.0\n3.7\n0.0\n0.0\n0.9\n1.5\n0.0\n%\nSubyearling\nSubyearling\nCatch\nchinook\nCatch\nchinook\n1\n1\n1\n76\n56\n122\n150\n27\n68\n89\n110\n62\n67\n62\n55\n71\n35\n39\n67\n53\n69\n103\n132\n63\n50\n81\nDesc.\nDesc.\n2\n2\n3\n2\n3\n2\n1\n3\n5\n1\n1\n1\n1\n1\n18 April\n19 April\n20 April\n21 April\n22 April\n5 July\n6 July\n7 July\n8 July\n11 July\n12 July\n13 July\n14 July\n27 June\n28 June\n29 June\n30 June\n1 July\n20 June\n21 June\n22 June\n23 June\n24 June\n25 June\n26 June\n25 May\n26 May\n27 May\nTest\ndate\nTest\ndate","0.0\n0.0\n1 100.0\n1 100.0\n25.0\n0.0\n0.0\n0.0\n0.0\n0.0\n12.5\n0.0\n10.4\n0.0\n33.3\n0.0\n0.0\n12.5\n%\nSockeye\nCatch\n48\n3\n27\n8\n2\n4\n1\n5\n4\n8\n8\n1\n1\n1\n1\n1\nDesc.\n1\n1\n5\n9\n1\n1\n1\n0.0\n0.0\n0.0\n0.0\n0.0\n2.8\n5.9\n0.0\n0.0\n0.0\n0.0\n0.0\n0.0\n33.3\n0.0\n0.0\n%\nDesc. Catch\nCoho\n3\n2\n3\n1\n1\n1\n8\n108\n17\n4\n6\n5\n8\n2\n1\n1\n3\n1\n1\n0.0\n25.0\n0.0\n0.0\n0.0\n0.0\n0.0\n0.0\n0.0\n0.0\n0.0\n0.0\n0.0\n4.5\n0.0\n0.0\n0.0\n0.0\n25.0\n2.4\n0.0\n0.0\n6.3\n0.0\n0.0\n0.0\n7.0\n14.3\n0.0\n0.0\n%\nSteelhead\nCatch\n3\n4\n2\n2\n3\n1\n1\n2\n14\n7\n8\n33\n18\n22\n4\n2\n4\n16\n8\n100\n14\n2\n11\n11\n11\n5\n2\n41\n13\n3\nDesc.\n1\n7\n2\n1\n1\n1\n1\n20.0\n0.0\n0.0\n0.0\n0.0\n0.0\n0.0\n0.0\n0.0\n0.0\n0.0\n0.0\n10.0\n0.0\n0.0\n4.0\n0.0\n16.7\n0.0\n9.1\n7.6\n8.9\n10.0\n0.8\n6.0\n1.2\n5.5\n0.0\n20.0\n5.0\n5.3\n0.0\n0.0\n12.1\n3.3\n1.1\n5.5\nUnit 19, Slot B : ESTS (39% porosity)\n%\nYearling\nchinook\nCatch\n10\n2\n2\n20\n19\n19\n9\n20\n5\n3\n6\n3\n1\n1\n1\n1\n6\n8\n19\n11\n25\n1\n5\n92\n56\n50\n33\n122\n133\n186\n109\n50\n83\n20\n202\n55\n101\nAppendix Table 2. --Continued.\nDesc.\n4\n10\n2\n1\n1\n1\n1\n7\n5\n5\n4\n4\n2\n6\n3\n1\n1\n3\n1\n3.8\n7.0\n3.3\n3.6\n1.4\n1.5\n4.8\n3.4\n3.0\n3.0\n2.8\n1.3\n0.0\n0.0\n0.0\n1.0\n1.7\n2.4\n0.0\n0.0\n0.0\n1.9\n0.0\n0.0\n1.9\n0.0\n3.9\n2.9\n4.1\n100.0\n0.0\n0.0\n0.0\n0.0\n0.0\n0.0\n0.0\n0.0\n%\nSubyearling\nCatch\nchinook\n69\n53\n43\n63\n59\n67\n132\n76\n52\n53\n49\n31\n51\n61\n84\n139\n68\n141\n81\n75\n27\n2\n2\n2\n2\n7\n58\n84\n49\n33\n25\n18\n102\n1\n1\n1\n1\n1\nDesc.\n2\n2\n2\n2\n3\n2\n3\n2\n1\n3\n2\n2\n4\n4\n1\n2\n1\n1\n1\n1\n1\n30 April\n18 April\n19 April\n20 April\n21 April\n22 April\n25 April\n26 April\n27 April\n28 April\n29 April\n20 June\n21 June\n22 June\n23 June\n24 June\n25 June\n26 June\n27 June\n28 June\n29 June\n30 June\n1 July\n5 July\n6 July\n7 July\n20 May\n23 May\n24 May\n25 May\n26 May\n27 May\n13 May\n14 May\n15 May\n16 May\n17 May\n18 May\n19 May\nTest\ndate","64\n%\n%\n%\nSockeye\nSockeye\nSockeye\nDesc. Catch\nCatch\nDesc. Catch\nDesc.\n0.0\n%\n%\n%\nDesc. Catch\nCatch\nDesc. Catch\nCoho\nCoho\nCoho\n1\nDesc.\n0.0\n10.0\n0.0\n0.0\n0.0\n0.0\n0.0\n0.0\n0.0\n0.0\n%\n%\n%\nSteelhead\nSteelhead\nSteelhead\nCatch\nCatch\nCatch\n10\n2\n2\n4\n2\n3\n2\n1\n1\n1\nDesc.\nDesc.\nDesc.\n1\n0.0\n0.0\n5.3\n0.0\n4.8\n0.0\n0.0\n0.0\n0.0\n0.0\n0.0\n0.0\n0.0\n0.0\n0.0\n0.0\n0.0\n6.1\nUnit 19, Slot B : ESTS (39% porosity)\n%\n%\nUnit 19, Slot C: ESTS (44% porosity)\n%\nUnit 20, Slot A : STS (48% porosity)\nYearling\nYearling\nYearling\nchinook\nchinook\nchinook\nCatch\nCatch\nCatch\n38\n17\n10\n50\n33\n16\n12\n4\n32\n55\n53\n34\n10\n19\n18\n1\n1\n21\nAppendix Table 2. --Continued.\nDesc.\nDesc.\nDesc.\n2\n2\n1\n0.0\n0.0\n0.0\n0.0\n0.0\n0.0\n0.0\n0.0\n0.0\n0.0\n0.0\n5.2\n5.7\n3.5\n1.9\n4.7\n0.0\n0.0\n%\n%\n%\nSubyearling\nSubyearling\nSubyearling\nCatch\nCatch\nCatch\nchinook\nchinook\nchinook\n19\n2\n4\n5\n4\n1\n1\n3\n4\n5\n6\n115\n87\n114\n103\n43\n1\n2\nDesc.\nDesc.\nDesc.\n6\n5\n4\n2\n2\n18 April\n19 April\n20 April\n21 April\n22 April\n18 April\n19 April\n20 April\n21 April\n22 April\n25 April\n26 April\n27 April\n28 April\n29 April\n30 April\n8 July\n11 July\n12 July\n13 July\n14 July\nTest\ndate\nTest\ndate\nTest\ndate","0.0\n0.0\n0.0\n0.0\n0.0\n0.0\n0.0\n0.0\n%\nSockeye\nCatch\n29\n1\n6\n5\n1\n1\n1\n1\nDesc.\n0.0\n0.0\n2.6\n0.0\n33.3\n0.0\n0.0\n0.0\n0.0\n0.0\n0.0\n%\nCatch\nCoho\n5\n2\n38\n3\n3\n4\n1\n1\n1\n1\n1\nDesc.\n1\n1\n0.0\n0.0\n0.0\n0.0\n0.0\n16.7\n0.0\n0.0\n0.0\n0.0\n16.7\n25.0\n0.0\n0.0\n0.0\n0.0\n0.0\n0.0\n9.1\n%\nSteelhead\nCatch\n8\n2\n33\n6\n5\n3\n6\n6\n3\n7\n7\n6\n8\n2\n2\n1\n1\n1\n1\nDesc.\n3\n2\n1\n1\n0.0\n0.0\n0.0\n0.0\n0.0\n0.0\n0.0\n0.0\n0.0\n0.0\n0.0\n20.0\n0.0\n0.0\n0.0\n0.0\n0.0\n0.0\n0.0\n0.0\n0.0\n%\nUnit 20, Slot A: STS (48% porosity)\nYearling\nchinook\nCatch\n19\n7\n50\n9\n4\n2\n5\n2\n2\n6\n6\n5\n1\n1\n4\n6\n1\n5\n1\n1\n1\nAppendix Table 2. --Continued.\nDesc.\n1\n0.0\n0.0\n0.0\n0.0\n0.0\n0.0\n0.0\n0.0\n0.0\n0.0\n0.0\n0.0\n0.0\n0.0\n0.0\n0.0\n0.0\n0.0\n0.0\n2.4\n0.0\n0.0\n2.5\n2.6\n0.0\n0.0\n0.0\n0.0\n0.0\n0.0\n0.0\n5.6\n0.0\n%\nSubyearling\nCatch\nchinook\n18\n20\n37\n34\n39\n27\n29\n29\n37\n36\n23\n24\n30\n8\n18\n18\n29\n10\n18\n22\n40\n38\n33\n49\n32\n29\n18\n41\n51\n51\n25\n31\n11\nDesc.\n1\n1\n1\n1\n20 June\n21 June\n22 June\n23 June\n24 June\n25 June\n26 June\n27 June\n28 June\n29 June\n30 June\n1 July\n5 July\n6 July\n7 July\n8 July\n11 July\n12 July\n13 July\n14 July\n13 May\n14 May\n15 May\n16 May\n17 May\n18 May\n19 May\n20 May\n23 May\n24 May\n25 May\n26 May\n27 May\nTest\ndate","","67\nAppendix Table 3 . -- -Juvenile salmonid horizontal distribution data\nfrom gatewell dip-net catch at The Dalles Dam,\n1994.\nUnit 2, Slot B\nTest\nSubyearling\nYearling\ndate\nchinook\nchinook\nSteelhead\nCoho\nSockeye\n19\nApril\n271\n21\n2\n20\nApril\n73\n10\n2\n21\nApril\n17\n37\n4\n22\nApril\n18\n82\n13\n25\nApril\n6\n403\n41\n26\nApril\n6\n350\n39\n27\nApril\n2\n187\n36\n28\nApril\n2\n146\n21\n29 April\n3\n89\n22\n30 April\n1\n8\n162\n25\n1\n2 May\n27\n286\n37\n3\n3 May\n21\n103\n31\n6\n4 May\n60\n61\n29\n10 May\n6\n70\n19\n4\n10\n11 May\n31\n28\n19\n4\n10\n13\nMay\n51\n59\n33\n12\n17\n14\nMay\n29\n24\n9\n24\n5\n15\nMay\n28\n27\n12\n22\n3\n16\nMay\n45\n50\n59\n88\n3\n17\nMay\n84\n20\n16\n54\n1\n18\nMay\n56\n20\n22\n21\n19\nMay\n67\n18\n18\n17\n2\n20\nMay\n83\n20\n38\n21\n2\n21\nMay\n73\n14\n9\n12\n23\nMay\n146\n13\n10\n5\n24\n8\n1\nMay\n69\n18\n27\n25\n37\n4\nMay\n79\n40\n115\n27\n69\n127\n25\n10\nMay\n95\n21\nJune\n24\n1\n2\n22 June\n162\n11\n1\n24 June\n216\n12\n4\n1\n25 June\n249\n11\n5\n26 June\n139\n3\n27 June\n59\n3\n28 June\n102\n4\n12\n29 June\n202\n1\n1 July\n132\n7\n2\n6 July\n38\n1\n1\n7 July\n30\n1\n8 July\n94\n3\n11 July\n171\n2","68\nAppendix Table 3 --Continued.\nUnit 12, Slot B\nTest\nSubyearling\nYearling\ndate\nchinook\nchinook\nSteelhead\nCoho\nSockeye\n19 April\n51\n5\n20 April\n4\n6\n21\nApril\n6\n12\n22\nApril\n4\n63\n1\n25\nApril\n4\n194\n14\n26\nApril\n1\n82\n3\n27\nApril\n3\n71\n13\n28\nApril\n4\n78\n8\n29 April\n3\n48\n4\n2\n30 April\n1\n46\n4\n2 May\n18\n98\n12\n4 May\n25\n37\n5\n10 May\n33\n34\n3\n3\n3\n6\n5\n11\nMay\n38\n7\n5\n13\nMay\n43\n46\n8\n13\n33\n14\nMay\n32\n22\n9\n12\n7\n15\nMay\n32\n18\n3\n6\n5\n16\nMay\n23\n24\n12\n34\n4\n17\nMay\n52\n20\n3\n46\n1\n18\nMay\n45\n6\n5\n6\n19\nMay\n32\n12\n2\n4\n1\n1\n20\nMay\n29\n8\n13\n5\n21\nMay\n17\n2\n2\n23\nMay\n66\n5\n1\n24\nMay\n27\n3\n7\n25\n9\n28\n12\nMay\n31\n27\n18\n25\n4\n1\nMay\n64\n21\nJune\n33\n2\n22 June\n35\n2\n24 June\n52\n1\n2\n25 June\n53\n1\n2\n26 June\n21\n1\n27 June\n25\n1\n28 June\n41\n4\n29 June\n55\n1\n1 July\n93\n6 July\n35\n1\n7 July\n36\n1\n8 July\n64\n1\n11 July\n126\n1","69\nAppendix Table\n--Continued.\n3\nUnit 17, Slot B\nSubyearling\nYearling\nTest\nSockeye\nCoho\nchinook\nchinook\nSteelhead\ndate\n19 April\n20\n17\n8\n20 April\n5\n8\n21\nApril\n7\n10\n22 April\n2\n79\n4\n25\nApril\n4\n22\n1\n26 April\n1\n5\n27 April\n6\n32\n1\n28\nApril\n3\n22\n20\n1\n29 April\n3\n30 April\n6\n9\n17\n4\n2 May\n22\n4 May\n43\n6\n3\n10 May\n49\n7\n25\n2\n11 May\n2\n17\n4\n13 May\n22\n10\n3\n8\n5\n14 May\n31\n6\n6\n3\n15\n28\n12\nMay\n11\n12\n29\n16 May\n30\n19\n3\n11\n6\n17 May\n39\n5\n1\n18\n42\n2\nMay\n2\n2\n19\n29\n4\nMay\n3\n3\n20 May\n34\n4\n6\n3\n2\n21\n22\nMay\n1\n1\n1\n23 May\n59\n3\n24 May\n22\n3\n3\n25 May\n23\n4\n3\n3\n2\n27 May\n53\n9\n13\n21 June\n11\n22 June\n13\n2\n24 June\n19\n25 June\n11\n26 June\n15\n27 June\n14\n28 June\n19\n1\n2\n29 June\n10\n1\n1 July\n30\n6 July\n10\n7 July\n17\n1\n8 July\n22\n11 July\n27"]}