Fread, D. L.

"This report on the numerical properties of the implicit four-point finite difference equations of unsteady flow is the first in a series of reports which will describe the use of the complete dynamic equations of unsteady flow for computing stages and discharges in rivers, reservoirs, and estuaries. The theory, solution techniques, computer programs, and description of field applications will be presented in forthcoming reports"--Preface.

National Weather Service (NWS)