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Map 7. Kaskaskia Region
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The low flow estimates presented here for the Sangamon region represent
an October 2002 update of previous published versions (Singh, 1973;
Singh et al., 1988a). These new low flow values were estimated from the
Illinois Streamflow Assessment Model for the Kaskaskia River watershed,
which is currently being updated from the original version of the model,
documented in Knapp (1990). The revised low flow estimates produced by
this model are based on hydrologic data collected up through 2001, which
include USGS streamgage records, water-use records collected by the
Illinois State Water Survey, and discharge data from wastewater
treatment facilities and industries as reported to the Illinois
Environmental Protection Agency. Selected water use and effluent
discharge estimates have been updated so that the values represent the
current (2001) hydrologic conditions in the region.
Knapp, H.V. 1990. Kaskaskia River Basin Streamflow Assessment Model:
Hydrologic Analysis. Illinois State Water Survey Contract Report 499.
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