River Explorer

Rivers in California

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

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The map shows a sample. Zoom in to see every one in view.

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

State rankings

Most-Stocked Fishing Waters in California Biggest Lakes and Reservoirs in California

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

More free tools

Other tools in this kit

Fishing SpotsBrowse 24,783 named waters, then read the state stocking record: species, size, and when.

Fishing TimesMajor and minor solunar periods, sunrise, sunset and the moon for your exact spot, all week.

Fishing License CheckPick your state, your age and whether you live there for a yes or no from the state's own rule, plus the next free fishing days.

Skill DrillsInteractive 3D drills, one decision at a time. Pick wrong and you watch it fail, then learn why.

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.

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