River Explorer

Rivers in Illinois

Named rivers across Illinois from public map data, with live USGS flow where a gauge sits.

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USGS-sourced rivers
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State rankings

Longest Trails in Illinois

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

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Route PlannerDrop stops on a map and watch distance and drive time add up. Export a GPX or share the link.

Gear ChecklistsPrintable, save-as-you-go packing lists. Tick items off and pull them up on your phone.

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Everything MapListings, trails, spots, clubs and public land on a single full-screen map. Switch layers on and off, then tap any point for the details.