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dimensional stream channels.
It is the only comprehensive model of watershed
hydrology and water quality that allows the integrated simulation of land and
soil contaminant runoff processes with in-stream hydraulic and sediment-chemical
interactions.
The result of this simulation is a time history of the runoff flow
rate, sediment load, and nutrient and pesticide concentrations, along with a
time history of water quantity and quality at any point in a watershed. HSPF
simulates three sediment types (sand, silt, and clay) in addition to a single
organic chemical and transformation products of that chemical.
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