Maine River Flow Rates & Stream Gauge Data
Live USGS stream gauge data for Maine — current CFS flow rates, gauge heights, water temperatures, and wading conditions for Maine rivers and streams. Updated every 15 minutes. Know before you go.
Planning with Maine river conditions
Browse USGS monitoring stations across Maine rivers and streams. Each gauge page shows current readings plus 7, 14, and 30-day flow-rate charts with condition indicators. Compare the station name and location with your intended reach, then use the recent trend alongside the current reading. Rain, snowmelt, dams, tributaries, and the distance between stations can produce different conditions on the same river.
Maine river guides
- Crooked River — Maine's Crooked River is a well-represented coldwater river in the stream map, with a long gauge record and a useful mix of moving-water structure.
- Kennebago River — The Kennebago River is a remote Maine coldwater destination with mapped trout water and a nearby gauge that can help put recent weather into context.