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.
**Major waterways across the United States are experiencing dramatically elevated flows this week, with the Ohio River leading the surge at 259,000 cubic feet per second (cfs) near Old Shawneetown, Kentucky—while some watersheds face concerning drought conditions. The contrasting hydrological picture sees the Upper Midwest, Ohio Valley, and parts of the Southeast managing substantial water volumes, even as Florida's Suwannee River system operates at just 18% of normal flow. For water managers and outdoor enthusiasts alike, understanding these regional patterns is crucial for navigation, recreation planning, and flood preparedness.**
The Ohio River Basin and its tributaries are commanding attention with exceptional flows. Beyond the Ohio's quarter-million cfs reading, the Little Miami watershed in southwestern Ohio is running at an extraordinary 2,685% of normal, while the Licking River system shows flows exceeding 4,300% of typical levels. Pennsylvania's Allegheny River system presents similarly dramatic conditions, with the Clarion River at 3,546% of normal and multiple Allegheny tributaries ranging from 900-2,000% above baseline. The Scioto River near Columbus is managing 13,780 cfs, though this represents a more moderate 882% of normal. Cities including Pittsburgh, Cincinnati, and Wheeling should monitor conditions closely, though these high flows currently remain within channel capacity at most locations. The Little Kanawha in West Virginia stands out at nearly 5,000% of normal—indicating recent intense precipitation events across Appalachian headwaters.
Elsewhere, Minnesota's river systems show robust but manageable flows, with the Minnesota River at multiple gauges reporting 14,500-16,900 cfs, while the Mississippi at St. Paul measures 23,900 cfs. The Southeast presents a mixed picture: Georgia's Savannah River system maintains strong flows near 25,700 cfs at Port Wentworth, yet Florida's situation varies dramatically—Jacksonville's St. Johns River flows at 152,000 cfs while the Suwannee languishes at severe drought levels. Western systems including California's Sacramento River (15,900 cfs at Verona) and Idaho's Snake River (multiple gauges between 5,200-19,200 cfs) show seasonal patterns influenced by reservoir management. Kansas and Oklahoma's Verdigris River system, running at 2,908% of normal, presents exceptional conditions for the Arkansas River Basin, affecting Tulsa and surrounding communities with flows exceeding 10,000 cfs.
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.