Please use this identifier to cite or link to this item: https://hdl.handle.net/11681/4560
Title: Analysis and revision of a reservoir water quality model
Authors: Environmental and Water Quality Operational Studies (U.S.)
Wlosinski, Joseph H.
Collins, Carol D.
Keywords: DeGray Lake
Arkansas
Water quality
Model improvement
Water quality models
CE-QUAL-R1
Computer program
Mathematical models
Numerical models
Reservoirs
Publisher: Environmental Laboratory (U.S.)
Engineer Research and Development Center (U.S.)
Description: Technical Report
Abstract: CE-QUAL-R1 is a one-dimensional model that is being developed by the Corps of Engineers to predict and assess the effects of engineering activities on reservoir water quality. Evaluation consisted of tests of the code and comparisons of model predictions with field measured values. Tests of the code included evaluations of the stability of predictions, conservation of mass, time step comparisons, entries of initial values, use of different driving variables, and a check of equation dimensionality. Evaluations of model predictions were made using data collected in 1979 and 1980 at DeGray Lake, a Corps of Engineers multipurpose project located in the Ouachita Mountains in south-central Arkansas. Calibration data were collected in 1979, and confirmation data in 1980. Both graphical and statistical tests were used for comparing model predictions with measured values. Variables used in this study were: algae, zooplankton, dissolved organic matter, orthophosphate-phosphorus, ammonia nitrogen, nitrite plus nitrate nitrogen, inorganic carbon, oxygen, pH, alkalinity, and dissolved solids. This report includes an evaluation of different variables, processes, and algorithms that were changed in order to provide a model whose predictions more closely fit measured values.
URI: http://hdl.handle.net/11681/4560
Appears in Collections:Technical Report

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