Delaware River At Port Jervis flow report
As of July 14, 2026, Delaware River At Port Jervis is flowing at 2,640 cfs with a gage height of 3.07 ft, rising 33% over the past 24 hours. Source: USGS gauge #01434000, refreshed throughout the day.
Historical Data
Delaware River At Port Jervis at a glance
How Delaware River At Port Jervis is running right now, where it sits on the map, and the key gauge stats.
Delaware River At Port Jervis is flowing at 2,640 cfs, with the water sitting 3.07 ft at the gage. Flow is up 33% since yesterday — a rising hydrograph.
This is USGS gauge #01434000 in Pennsylvania. Over the past 10 days the average has been 3,403 cfs, peaking at 6,450 cfs.
For real-time updates and historical context, see the realtime view or the historical comparison. Browse other gauges in the Pennsylvania flow report.
Streamflow Forecast
Over the next 5 days, Delaware River At Port Jervis Ny is expected to recede from today's 2640 cfs, toward roughly 2316 cfs by 2026-07-19 (likely range 1230-4362 cfs) -- running well below the seasonal normal.
Powered by PULSE — Snoflo’s forecast engine, trained on this gauge’s full record of storms, snowmelt, and dry spells.
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.
Delaware River At Port Jervis
The river is influenced by several tributaries, including the Lackawaxen River and Neversink River, and is impacted by several large dams, including the Mongaup Dam and the Pepacton Reservoir. The river's flow varies seasonally, with higher flows in the spring due to snowmelt and lower flows in the summer and fall. The hydrology of the Delaware River is important for water supply, recreation, and wildlife habitat. Interestingly, the river is home to several species of fish, including American shad and striped bass, which migrate upriver from the Atlantic Ocean to spawn.
Nearby streamflow levels
Cross-check Delaware River At Port Jervis's discharge against nearby gauges to spot whether the change here is local or regional.
| Gauge | Streamflow |
|---|---|
| Delaware River At Port Jervis Ny | 2,640 cfs |
| Delaware River At Montague Nj | 3,210 cfs |
| Neversink River At Godeffroy Ny | 216 cfs |
| Mongaup River Near Mongaup Ny | 211 cfs |
| Shohola Creek Near Walker Lake | 73 cfs |
| Little Bush Kill At Edgemere | 2 cfs |
Nearby snowpack data
Snowpack at SNOTEL stations near Delaware River At Port Jervis. 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 |
|---|---|
| Port Jervis | 0 in |
| Vernon Twp 2.7 Sse | 0 in |
| Highland Lakes 1sw | 0 in |
| Greenwood Lake 3.0 Sw | 0 in |
| Sparta Twp 3.6 Ssw | 0 in |
| West Milford Twp 2.5 Sse | 0 in |
Plan a trip
Reservoirs, boat launches, river runs, and fishing spots within driving distance of Delaware River At Port Jervis.
Nearby reservoirs
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 Delaware River At Port Jervis in the Snoflo app
Save this gauge as a favorite, set push alerts when streamflow crosses a threshold (e.g. "alert me when Delaware River At Port Jervis crosses 5,000 cfs"), and Snoflo's iOS app will push the moment USGS reports the crossing.
About Delaware River At Port Jervis
Where does the streamflow data for Delaware River At Port Jervis come from?
Discharge, gage height, and water temperature come directly from the USGS streamflow gauge 01434000. 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 Delaware River At Port Jervis 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 Delaware River At Port Jervis report
Create your free account to track this river — and everything else you love on the water.
- Flow alerts — get pinged the moment this river hits your range
- Save favorites — every river, lake & snowpack in one place
- Full history & forecasts — plus the free iPhone app