Loading map...
Interactive Map of US Rivers
RiverReports monitors over 597 USGS gauge sites across 37 states, providing real-time river flow data for anglers, kayakers, and outdoor enthusiasts. Use the interactive map above to explore rivers near you, or browse by state below.
Browse Rivers by State
About This Map
This interactive map displays real-time monitoring data from the United States Geological Survey (USGS) National Water Information System. Each point represents a gauge station that continuously measures river flow, water level, and other hydrological parameters.
River flow is measured in cubic feet per second (CFS) and is critical for understanding current river conditions. Whether you are planning a fishing trip, checking conditions for a float, or monitoring water levels in your area, this data helps you make informed decisions about when and where to go.
Zoom into any region to see river polyline overlays showing the actual waterways being monitored. Click on any gauge site for current readings, historical comparisons, and links to detailed flow charts and forecasts.
Frequently Asked Questions
How many rivers are monitored in the US?
The USGS operates thousands of stream gauges across the United States. RiverReports tracks over 605 gauge sites across 37 states, focusing on rivers popular for fishing, kayaking, and recreation. Each site provides real-time flow data updated throughout the day.
What is a USGS gauge site?
A USGS gauge site is a monitoring station operated by the United States Geological Survey that measures river conditions including water flow (discharge), water level (gauge height), and sometimes water temperature. These stations use sensors to collect data continuously and transmit it in near real-time.
How often is river flow data updated?
Most USGS gauge sites report data every 15 to 60 minutes. RiverReports fetches the latest readings regularly so you can see current conditions before heading to the river. Historical data is also available to help you compare current flows to seasonal averages.
Can I see river conditions for my state?
Yes! Use the state filter on the map above or browse our state pages below. We cover 37 states with real-time gauge data. Each state page shows all monitored rivers with current flow readings, forecasts, and fishing reports.
What data is available for each river?
Each river site on RiverReports shows current flow rate (CFS), gauge height, water temperature when available, historical flow comparisons, weather forecasts, and community fishing reports. Some sites also display river segment maps showing the monitored stretch of water.
River Intel Weekly
Weekly flow updates and fishing intel.
© 2026 RiverReports, Inc.