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 America are experiencing dramatically elevated streamflows, with some watersheds reporting flows exceeding 1,000% of normal levels.** The Ohio River leads all major waterways with a staggering 259,000 cubic feet per second (cfs) at Old Shawneetown, while the St. Johns River in Jacksonville, Florida registers 152,000 cfs. Most concerning are watersheds in Texas, where the Nueces River system shows flows at 136,569% of normal—an extraordinary surge driven by recent precipitation. From Minnesota's swollen tributaries to Georgia's Savannah River system, water managers and outdoor enthusiasts are witnessing one of the most significant high-flow events in recent memory.
The Mississippi River basin tells a compelling story, with multiple monitoring stations showing elevated readings. At Hastings, Minnesota, flows reach 27,700 cfs, while St. Paul records 23,900 cfs. The Minnesota River, a major tributary, displays consistently high flows at multiple gauges—16,900 cfs near Jordan, 14,500 cfs at Mankato, and 9,600 cfs at Morton. Meanwhile, Arkansas's White River system demonstrates remarkable volumes across three measurement points, ranging from 18,200 to 43,800 cfs. Texas watersheds face particularly extreme conditions: the Middle Nueces watershed reports an astonishing 163,830% of normal flow, while the Richland watershed in Washington registers 5,210% of normal. The Pecos River headwaters in New Mexico show flows exceeding 2 million percent of historical averages, indicating unprecedented runoff conditions.
For rafting enthusiasts, California's Sacramento River at Verona (15,900 cfs) and Idaho's Snake River system offer prime conditions, with the Snake reaching 19,200 cfs at Hells Canyon Dam. However, extreme caution is warranted on Southern rivers—Georgia's Savannah River system maintains dangerous flows exceeding 25,700 cfs near Port Wentworth, threatening Savannah's waterfront. Jacksonville faces similar concerns with the St. Johns River's massive discharge. The Tombigbee River in Alabama runs at 279% of normal, while the Tradewater River in Kentucky surges at 2,602% of typical flows. These conditions create both opportunities and hazards: excellent for experienced whitewater rafters on Western rivers, but posing significant flood risks to communities along Southeastern and Gulf Coast waterways where infrastructure faces sustained pressure from these historic flows.
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.