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|Title:||Three-dimensional eutrophication model of the Lower St. Johns River, Florida|
|Authors:||Mississippi State University. Department of Civil Engineering.|
Tetra Tech, Inc.
St. Johns River Water Management District (Fla.)
Tillman, Dorothy H.
Cerco, C. F.
Noel, Mark R.
Martin, James L.
St. Johns River
Water quality model
|Publisher:||Environmental Laboratory (U.S.)|
Engineer Research and Development Center (U.S.)
|Series/Report no.:||ERDC/EL TR ; 04-13.|
Abstract: The CE-QUAL-ICM three-dimensional eutrophication model was applied to the lower, estuarine, portion of the St. Johns River, Florida. Transport processes were obtained from the Environmental Fluid Dynamics Code. Model application period was December 1996 through November 1998. The model activated 28 state variables in the water column including physical variables, three algal groups, multiple forms of carbon, nitrogen, phosphorus and silica, and dissolved oxygen. Several features were added to the model for this application. These included representation of the internal algal phosphorus pool, distinction of labile and refractory dissolved organic matter, and representation of nitrogen fixation. The water column was coupled to a predictive sediment diagenesis model that computed sediment-water fluxes of dissolved oxygen, chemical oxygen demand, ammonium, nitrate, phosphate, and silica, based on computed inputs of particulate organic matter. Model results were compared to an extensive suite of observations in the water column and benthic sediments.
|Appears in Collections:||Technical Report|