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Saturday, July 13, 2024

Illinois Rivers Decision Support System

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Access to the new Water Quality Database is available here.

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The ILRDSS web site is a portal to information related to the watersheds of Illinois. Our database of web links is organized and searchable by product type and geographic area.

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IL River Watershed Poster

Poster-sized (26x38) map of the entire Illinois River Watershed. Part of the State Water Survey’s published Map Series (2003–1).
LoRes  |  HiRes (3.5 MB PDF)