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Title: Water quality modeling for the Napa River 100-year Flood Control Project
Authors: Hall, Ross W.
Dortch, Mark S.
Keywords: Biochemical oxygen demand
Water--Dissolved oxygen
Water quality
Napa River (Calif.)
Publisher: Environmental Laboratory (U.S.)
U.S. Army Engineer Waterways Experiment Station.
Series/Report no.: Miscellaneous Paper (U.S. Army Engineer Waterways Experiment Station.) ; EL-98-2
Abstract: The objective of the study was to compare dissolved oxygen (DO), and other water quality variables between existing and project conditions. The two-dimensional hydrodynamic and water quality model CE-QUAL-W2 was selected for the study. Constituents simulated included temperature, total suspended solids (TSS), salinity, DO, and biochemical oxygen demand (BOD). The study consisted of two steps: (1) calibration to existing conditions and (2) comparison of existing and project conditions. The period of simulation extended from July 1 through September 30, 1994. The 100-year flood control project increases the channel conveyance needed to carry flood flows. Increased conveyance is achieved by excavating and widening the channel above the mean-tide level, and creation of a floodway through the city. Temperatures between existing and project conditions were equivalent except for an increase of less than 1°C in the project reach. TSS and salinity comparisons revealed no differences. DO comparison revealed a DO decrease of less than 1 g m⁻³ in the proposed project reach.
Description: Miscellaneous Paper
Gov't Doc #: Miscellaneous Paper EL-98-2
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