Genesee River At Wellsville flow report
As of July 16, 2026, Genesee River At Wellsville is flowing at 109 cfs with a gage height of 4.55 ft, receding 9% over the past 24 hours. Source: USGS gauge #04221000, refreshed throughout the day.
Historical Data
Genesee River At Wellsville at a glance
How Genesee River At Wellsville is running right now, where it sits on the map, and the key gauge stats.
Genesee River At Wellsville is flowing at 109 cfs, with the water sitting 4.55 ft at the gage. Flow is down 9% since yesterday as the gauge recedes.
This is USGS gauge #04221000 in New York. Over the past 10 days the average has been 316 cfs, peaking at 1,460 cfs.
For real-time updates and historical context, see the realtime view or the historical comparison. Browse other gauges in the New York flow report.
Engineering Data
Flow-duration statistics and observed peak-flow context computed from this gauge’s complete daily record (USGS #04221000).
Percentiles are flow-duration values computed from this gauge’s observed daily record as archived by Snoflo. Return periods are Weibull plotting-position estimates from observed annual maxima, provided as general reference context only. Always verify against official USGS NWIS records. Part of Snoflo for Engineering.
Streamflow Forecast
Over the next 5 days, Genesee River At Wellsville Ny is expected to recede from today's 109 cfs, toward roughly 85 cfs by 2026-07-21 (likely range 28-260 cfs) -- drier than normal for the date.
Powered by PULSE — Snoflo’s forecast engine, trained on this gauge’s full record of storms, snowmelt, and dry spells.
| Date | Expected (p50) | Likely range (p25–p75) | vs normal | Projected stage |
|---|
How does this compare to past years?
Year-over-year overlay, annual peak discharge, the full distribution of daily flows on record, and the gauge's rating curve.
Weather Forecast
Next 5 days, hour by hour
Temperature line with weather symbols on top, snow + rain accumulation as columns, humidity as a dotted line.
5-day forecast table
Every 3 hours, broken out across temperature, snow, rain, humidity, and wind.
| Time | Condition | Temp (°F) | Snow (in) | Rain (in) | Humidity (%) | Wind (mps) | Wind dir |
|---|---|---|---|---|---|---|---|
| Loading detailed forecast… | |||||||
15-day forecast
Daily temperatures, snow, and rain projected over the next two weeks.
Genesee River At Wellsville
The river is fed by numerous small tributaries, including Cryder Creek and Halls Creek. There are no major dams on the Genesee River at this location. During the spring months, flow rates tend to increase due to snowmelt and rain, while summer months see lower flows. Interestingly, the Genesee River was once used for transportation, with boats carrying goods and people from Lake Ontario to the city of Rochester. Today, the river is used for recreational activities such as fishing and kayaking.
Nearby streamflow levels
Cross-check Genesee River At Wellsville's discharge against nearby gauges to spot whether the change here is local or regional.
| Gauge | Streamflow |
|---|---|
| Genesee River At Wellsville Ny | 109 cfs |
| Oswayo Creek At Shinglehouse | 31 cfs |
| Canacadea Creek Near Hornell Ny | 10 cfs |
| Canisteo R Below Canacadea Cr @ Hornell Ny | 33 cfs |
| Canisteo River At Arkport Ny | 2 cfs |
| Allegheny River At Eldred | 154 cfs |
Nearby snowpack data
Snowpack at SNOTEL stations near Genesee River At Wellsville. Spring snowmelt is the dominant driver of streamflow in mountain basins -- a deep snowpack upstream means more runoff later in the season.
| SNOTEL station | Snowpack |
|---|---|
| Wellsville 2.4 Ene | 0 in |
| West Almond 3.6 Sw | 0 in |
| Angelica | 0 in |
| Alfred | 0 in |
| Hornell Almond Dam | 0 in |
| Roulette 1.8 Nne | 0 in |
Plan a trip
Reservoirs, boat launches, river runs, and fishing spots within driving distance of Genesee River At Wellsville.
Boat launches
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River levels & flood safety
- Read the level before you go
- A river that's runnable at one flow can be deadly at another. Check current discharge and gage height — like the values shown above — against the flood-stage thresholds, and remember levels can spike fast after rain or a dam release.
- Respect cold water
- Snowmelt rivers run cold even in summer. Sudden immersion triggers cold-water shock and saps strength within minutes. Wear a PFD, dress for the water temperature (not the air), and never wade or paddle alone.
- Watch for swiftwater hazards
- Strainers (downed trees), undercut rocks, and low-head dams are the deadliest features on moving water. High, fast, muddy water hides them. If in doubt, scout from shore and portage.
- Mind flash floods & releases
- Narrow canyons can flood from a storm miles upstream, and dam-controlled reaches can rise without warning. Know the forecast, the release schedule, and your exit before you launch.
Track Genesee River At Wellsville in the Snoflo app
Save this gauge as a favorite, set push alerts when streamflow crosses a threshold (e.g. "alert me when Genesee River At Wellsville crosses 5,000 cfs"), and Snoflo's iOS app will push the moment USGS reports the crossing.
About Genesee River At Wellsville
Where does the streamflow data for Genesee River At Wellsville come from?
Discharge, gage height, and water temperature come directly from the USGS streamflow gauge 04221000. Snoflo refreshes the time series throughout the day. Forecasts come from the NOAA / yr.no feed Snoflo's iOS app uses.
How often is the report updated?
USGS gauges report continuously (typically every 15 minutes). Snoflo pulls fresh values throughout the day — look for the "as of" timestamp on the streamflow hero card.
What's the difference between discharge and gage height?
Discharge (cubic feet per second, or cfs) is the volume of water flowing past the gauge each second. Gage height is how high the water sits at the gauge (feet). They're related by a rating curve specific to each gauge — higher water means more flow, but the exact ratio depends on channel shape.
How is "percent of median" calculated?
Today's discharge is compared to the historical median discharge on this calendar day across the gauge's full record. 100% = right on median; 200% = a very high year; 30% = a drought-level low.
What are flood stages, and is this river safe right now?
Flood stages are NWS-defined gage-height thresholds — Action, Minor, Moderate, Major — marking when nearby roads or floodplains start to be affected. "Safe" depends on your activity and skill: a level that's a fun paddle for an expert can be lethal for a wader. Always check the current level against the thresholds above and the safety links, and when in doubt, stay off the water.
Can I get alerts when Genesee River At Wellsville rises?
Yes — flow alerts are managed in the Snoflo iOS app. Favorite this gauge, set a streamflow threshold (e.g. "alert me when discharge crosses 5,000 cfs"), and you'll get a push the moment USGS reports the crossing.
Access the free Genesee River At Wellsville report
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