The need for predictive water quality modeling has received renewed interest
largely because of increased concern over climate change, acid rain, land use
practices, toxic wastes, spills and progressive groundwater pollution. Long~term
trends in addition to short term responses, are of increased interest.
Process~oriented lake water quality models have been developed previously (e.g.
Orlob, 1983; USCE 1986; and Riley and Stefan, 1988). These simulation models are
calibrated for individual lakes associated with particular climatic conditions. Water
quality models which can be used without recalibration for regional lake assemblages
and over several years in a continuous mode (during the open water and the winter
ice cover season) have not been previously reported in the literature.
The purpose of this report is to describe a first attempt to develop a year-round
water quality model to simulate vertical water temperature and dissolved oxygen
distributions for a wide range of lake morphometries and meteorological conditions.
The model is designed to be driven by the meteorological conditions and to operate
in a continuous long~term mode. Although the model represents a great over~
simplification, the stratification dynamics of water temperature and dissolved oxygen
can be predicted to a reasonable degree.
Environmental Research Laboratory, US Environmental Protection Agency
Stefan, Heinz G.; Hondzo, M.; Fang, Xing; Rasmussen, Anders H..
Year Round Water Temperature and Dissolved Oxygen Simulation Model for Lakes with Winter Ice Cover.
St. Anthony Falls Hydraulic Laboratory.
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