River Explorer

Rivers in Iowa

Community-mapped river reaches across Iowa. Length, water type, and live USGS flow where a gauge sits on the water.

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Free to browse
USGS-sourced rivers
Open in the app for live flow and tracking

State rankings

Biggest Lakes and Reservoirs in Iowa

River data from the USGS National Hydrography Dataset (public domain). Live flow, where shown, from USGS Water Data.

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