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.
Rivers across the eastern United States are experiencing significantly elevated streamflows, with the Ohio River leading the nation at a robust 259,000 cubic feet per second (cfs) near Old Shawneetown on the Kentucky-Illinois border. The Mississippi River system, Minnesota's tributaries, and several southeastern waterways are also running well above typical levels, creating prime conditions for anglers while demanding attention from water managers. From the Great Plains to the Atlantic Coast, this widespread pattern reflects recent precipitation events and upstream releases, though notably, no gauges have reached official flood stage.
The Ohio River's impressive flow at Old Shawneetown represents the highest reading in the current dataset, potentially impacting navigation and recreational activities along this major commercial waterway. Meanwhile, Florida's St. Johns River at Jacksonville is moving 152,000 cfs under sunny skies—exceptional for this typically sluggish coastal system. The White River in Arkansas shows robust flows at multiple measurement points, with Batesville recording 43,800 cfs, offering excellent conditions for trout fishing below Bull Shoals Dam. Minnesota's rivers are particularly active, with the Mississippi at St. Paul flowing at 23,900 cfs and the Minnesota River showing elevated readings at multiple stations from Lac Qui Parle to Jordan, suggesting significant snowmelt or rainfall contributions across the upper Midwest watershed.
Georgia's river systems are experiencing sustained high flows, with the Savannah River near Port Wentworth carrying 25,700 cfs and the Altamaha River at Doctortown moving 13,400 cfs—conditions that benefit both recreational paddlers and commercial interests near Savannah. Out West, Idaho's Snake River shows strong flows from Heise to Hells Canyon Dam (19,200 cfs), while California's Sacramento River at Verona registers 15,900 cfs. For whitewater enthusiasts, these elevated but controlled flows present ideal rafting conditions, particularly on the Snake River corridor. Water managers should monitor the Ohio and Mississippi systems closely, as any additional precipitation could push levels toward minor flood stage in coming days.
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.