In-water restoration between Miller Sands and Pillar Rock Island, Columbia River : biological surveys, 1992

Details

• Personal Author:
  McCabe, George T. ; Hinton, Susan A. ; Emmett, Robert L. (Robert Laurence)
• Corporate Authors:
  Northwest Fisheries Science Center (U.S.). Coastal Zone and Estuarine Studies Division.
• NOAA Program & Office:
  NMFS (National Marine Fisheries Service) ; NWFSC (Northwest Fisheries Science Center)
• Description:
  A site in the Columbia River estuary between Miller Sands and Pillar Rock Island (River Kilometers 40-42) (Fig. 1) is being investigated by the COE, Portland District under the Long-Term Management Strategy for dredged-material management in the Columbia River estuary. The proposed disposal site has been identified as an active erosion location. Since 1958, this area has eroded from a shallow subtidal habitat (0 to 1.8 m (0 to 6 ft) Columbia River Datum (CRD)) to the present depth of 7.6 m (25 ft) CRD. Approximately 9.2 million m3 (12 million yd3 of material have eroded. The annual erosion rate at this area is estimated to be 53,515 m3 (70,000 yd3) of material
• Keywords:
  Habitat (Ecology) Habitat Conservation Modification Observations River Sediments Habitat Conservation River Sediments
• Format:
  PDF
• Document Type:
  Non-series Report
• Place as Subject:
  Columbia River Estuary (Or. and Wash.)
• License:
  https://creativecommons.org/publicdomain/zero/1.0/
• Rights Information:
  CC0 Public Domain
• Compliance:
  Library
• Main Document Checksum:
  urn:sha256:82a25ac42a31ae5baa21cfd14bd3c8db3340f99c8c80d11d7775a7241cf4add1
• Download URL:
  https://repository.library.noaa.gov/view/noaa/56380/noaa_56380_DS1.pdf
• File Type:
  [PDF - 16.58 MB ]