Allegheny River At Natrona Flow Report
As of August 3, 2026, Allegheny River At Natrona is flowing at 15,400 cfs with a gage height of 11.87 ft, rising 133% over the past 24 hours. Source: USGS gauge #03049500, refreshed throughout the day.
Historical Data
Allegheny River At Natrona at a glance
How Allegheny River At Natrona is running right now, where it sits on the map, and the key gauge stats.
Allegheny River At Natrona is flowing at 15,400 cfs, with the water sitting 11.87 ft at the gage. Flow is up 133% since yesterday — a rising hydrograph.
This is USGS gauge #03049500 in Pennsylvania. Over the past 10 days the average has been 8,821 cfs, peaking at 15,400 cfs.
For real-time updates and historical context, see the realtime view or the historical comparison. Browse other gauges in the Pennsylvania flow report.
Engineering Data
Flow-duration statistics and observed peak-flow context computed from this gauge’s complete daily record (USGS #03049500).
Estimate flows at an ungauged site
Drainage-area ratio transfer from this gauge . Most reliable for hydrologically similar sites in the same watershed with area ratios between roughly 0.5 and 1.5.
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, Allegheny River At Natrona is expected to recede from today's 6610 cfs, toward roughly 5418 cfs by 2026-08-07 (likely range 3451-8507 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.
Allegheny River At Natrona
The river is a major source of water for the region and provides drinking water for Pittsburgh. The river is fed by several tributaries such as the Clarion River and Pine Creek. There are also several dams along the river, including the Kinzua Dam, which was built in the 1960s to control flooding. The flow rate of the river varies throughout the year, with peak flow occurring during the spring months due to snowmelt and rainfall. Interestingly, the Allegheny River has been the subject of several songs and poems, including "The Allegheny" by R.H. Shannon.
Nearby streamflow levels
Cross-check Allegheny River At Natrona's discharge against nearby gauges to spot whether the change here is local or regional.
| Gauge | Streamflow |
|---|---|
| Allegheny River At Natrona | 15,400 cfs |
| Buffalo Creek Near Freeport | 323 cfs |
| Kiskiminetas River At Vandergrift | 2,500 cfs |
| Crooked Creek At Crooked Creek Dam | 166 cfs |
| Little Pine Creek Near Etna | 31 cfs |
| Allegheny River At Kittanning | 8,610 cfs |
Nearby snowpack data
Snowpack at SNOTEL stations near Allegheny River At Natrona. 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 |
|---|---|
| Salina | 0 in |
| Cabot 1.6 Wnw | 0 in |
| Crooked Creek Lake | 0 in |
| Braddock Lock And Dam | 0 in |
| Fox Run 1.6 Nne | 0 in |
| Meridian 1.4 Sw | 0 in |
Plan a trip
Reservoirs, boat launches, river runs, and fishing spots within driving distance of Allegheny River At Natrona.
Boat launches
See all →
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 Allegheny River At Natrona in the Snoflo app
Save this gauge as a favorite, set push alerts when streamflow crosses a threshold (e.g. "alert me when Allegheny River At Natrona crosses 5,000 cfs"), and Snoflo's iOS app will push the moment USGS reports the crossing.
About Allegheny River At Natrona
What is the Allegheny River At Natrona flow rate right now?
As of August 3, 2026, Allegheny River At Natrona is flowing at 15,400 cfs. The live value, gage height, and 24-hour trend are shown at the top of this page.
Is the Allegheny River At Natrona running high or low right now?
Check the percent of median figure on this page: above 100% means Allegheny River At Natrona is running higher than normal for the date, below 100% means lower. The 24-hour trend shows whether it's rising or falling.
Where does the streamflow data for Allegheny River At Natrona come from?
Discharge, gage height, and water temperature come directly from the USGS streamflow gauge 03049500. 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 Allegheny River At Natrona 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 Allegheny River At Natrona report
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