Live streamflow across the country.
Real-time discharge from 10,000+ USGS streamgauges, surging-streamflow ranking, paddle-runnable status, and a daily AI briefing — refreshed throughout the day from USGS and NOAA feeds. Built for paddlers, anglers, water managers, and flood researchers.
What the rivers are running at
An AI-generated summary stitched from today's USGS streamgauge readings, NWS flood watches, and watershed status across the country.
The nation's waterways are experiencing significant hydrological extremes this week, with several major river systems reporting extraordinary flows while others run below seasonal norms. The Ohio River at Old Shawneetown leads the nation with a staggering 259,000 cubic feet per second (cfs), while multiple watersheds show streamflows exceeding 1,000% of normal levels. From Minnesota's swollen tributaries to Florida's tidal rivers, water managers and outdoor enthusiasts face a dynamic landscape of flooding concerns and drought pockets that underscore the importance of real-time monitoring.
The Upper Midwest emerges as a hotspot for elevated streamflows, with the Mississippi River system showing robust activity from Minnesota through Kentucky. At St. Paul and Hastings, the Mississippi is carrying 23,900 and 27,700 cfs respectively under partly sunny skies, while the Minnesota River displays remarkable consistency across multiple gauges—ranging from 5,040 cfs at Lac Qui Parle to 16,900 cfs near Jordan. Most striking are several watersheds reporting extreme conditions: the Richland watershed in Kansas shows flows at an astounding 23,810% of normal, while the Upper San Antonio watershed in Texas runs at 8,542% of normal. The Wabash River system in Indiana demonstrates similar intensity, with the Middle Wabash-Busseron watershed at 996% of normal. These extraordinary numbers suggest recent heavy precipitation events or snowmelt runoff overwhelming these systems.
Southeastern rivers present a contrasting picture, with Georgia's Savannah River maintaining steady flows between 9,090 and 25,700 cfs across multiple monitoring points from Augusta to Port Wentworth under sunny conditions—ideal for anglers targeting spring bass runs. However, Florida's Suwannee River runs at just 75% of normal despite 5,590 cfs flows, indicating persistent drought conditions in the watershed. Meanwhile, Arkansas's White River system shows exceptional fishing potential with flows of 43,800 cfs at Batesville, though afternoon thunderstorms may challenge rafting plans. The Upper Susquehanna-Lackawanna watershed in Pennsylvania reports 728% of normal flows, creating challenging whitewater conditions on tributaries. Western rivers like California's Sacramento and Idaho's Snake River maintain controlled releases suitable for recreational use, though scattered snow showers near Hells Canyon may impact access for adventurous paddlers seeking spring conditions.
Top river runs by streamflow
Whitewater and paddle runs sorted by current discharge. Useful as a first-look for paddlers planning a trip and an early-warning signal for downstream flood watchers.
| River run | Status | Streamflow | Class |
|---|---|---|---|
| Grand Canyon | Runnable | 9,320 cfs | III TO IV |
| Greenwood To Mammoth Bar | Runnable | 1,390 cfs | II TO II+ |
| Tunnel Run (Ralston Powerhouse To Greenwood) | Runnable | 1,390 cfs | IV- TO IV |
| Generation And Giant Gaps (Tadpole To Colfax-Iowa Hill Road) | Runnable | 1,390 cfs | IV TO IV+ |
| Yankee Jim Road To Ponderosa Way (Shirttail) | Runnable | 1,390 cfs | II TO III |
| Chili Bar | Runnable | 1,390 cfs | III TO IV |
| Coloma To Greenwood - (C To G) | Runnable | 1,390 cfs | II TO III- |
| Sunrise Avenue To Watt Avenue | Too High | 1,020 cfs | II- TO II |
| Royal Gorge (Soda Springs To Tadpole Creek) | Runnable | 817 cfs | V TO V+ |
| Christopher Creek | Too High | 443 cfs | V |
| Indian Gardens | Too Low | 30 cfs | IV- TO IV+ |
| Hell's Gate Canyon | Too Low | 14 cfs | V |
About the streamflow data
Where does this data come from?
Discharge readings come directly from the U.S. Geological Survey (USGS) streamgauge network — 10,000+ stations spread across every state. USGS publishes the data publicly; we aggregate, rank, and pair it with watershed boundaries and weather forecasts.
What is "cfs"?
Cubic feet per second — the standard unit for streamflow. One cfs is roughly 7.5 gallons per second flowing past the gauge. Small creeks run at single-digit cfs; the Mississippi runs at hundreds of thousands.
What does "percent of normal" mean?
The current flow at a gauge compared to its seasonal average for this date. 100% is right at the historical norm. 200%+ on a small-to-medium river is a strong indicator of flood conditions; below 70% indicates drought-stressed flow.
How fresh is the data?
USGS streamgauges report every 15 minutes; we re-pull every hour and re-rank. The AI briefing regenerates daily.
Can I get an alert when my home river fires?
Yes. Save any USGS gauge as a favorite in the Snoflo iOS app, set a threshold (e.g. "alert me at 200 cfs" or "alert me on stage above 12 ft"), and you'll get a push the moment it crosses. Free with a Snoflo account.
Is this a substitute for official flood warnings?
No. Snoflo is informational. For life-safety decisions follow guidance from your local NWS forecast office and emergency management. Use Snoflo data as one input among several.
Streamflow by state
Tap any state for USGS streamgauges, surging streamflows, and the daily AI flow briefing focused on that state.