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Flow report

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.

USGS gauges
10K+
Surging streamflows
12
Watersheds tracked
Updated
Sep 12
Open the streamflow layer on the interactive map Pan, zoom, and overlay every USGS gauge nationwide.
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Today's flow briefing

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.

September
12
2026
Flow report
# Rivers Run High Across America's Heartland as Spring Flows Surge

**Major Rivers Swell from Midwest to South as Watersheds Report Exceptional Flows**

A dramatic hydrological picture is emerging across the United States as dozens of major river systems report significantly elevated streamflows, with the Ohio River leading the charge at a staggering 259,000 cubic feet per second (cfs) near Old Shawneetown, Kentucky. From Minnesota's swollen waterways to Florida's tidal rivers, water management officials are monitoring conditions that range from exceptional highs to concerning drought signals. While much of the nation's midsection experiences above-average flows likely tied to recent precipitation and snowmelt, stark contrasts exist—notably the Suwannee River in Florida flowing at just 18% of normal levels, presenting a troubling drought scenario for the region.

The Mississippi River basin and its tributaries dominate the high-flow narrative, with multiple Minnesota monitoring stations reporting robust conditions. The Mississippi itself registers 27,700 cfs below Lock and Dam #2 at Hastings and 23,900 cfs at St. Paul, while the Minnesota River system shows particularly impressive numbers—16,900 cfs near Jordan and elevated readings throughout its watershed at Mankato, Morton, and Montevideo. These flows, combined with the Ohio River's exceptional discharge, suggest significant recent precipitation across the Upper Midwest and Ohio Valley. The Richland watershed in the Pacific Northwest stands out with an extraordinary 5,210% of normal flow, while Ohio's Little Miami watershed reports a remarkable 4,677% of normal—figures indicating either intense localized rainfall events or data anomalies requiring further investigation. For anglers and rafters, Arkansas's White River system offers prime conditions with 43,800 cfs at Batesville and strong flows at Calico Rock and Norfork.

Georgia's river systems present mixed opportunities, with the Savannah River maintaining healthy flows from Augusta (9,090 cfs) downstream to Port Wentworth (25,700 cfs), ideal for recreational boating. However, the Southeast shows variability—Florida's St. Johns River at Jacksonville reports 152,000 cfs while the Suwannee languishes in severe deficit. Western systems including California's Sacramento River (15,900 cfs at Verona) and Idaho's Snake River corridor show steady regulated releases suitable for recreation. Water managers should note the Cache River watershed in Arkansas running at 1,037% of normal and numerous Ohio Valley tributaries showing exceptional percentage increases, suggesting saturated soil conditions and continued flood risk. The weather outlook includes thunderstorm chances across the central states and snow showers in the Northwest, potentially sustaining these elevated conditions into the coming week.
Right now

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
Flow report FAQ

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.