Hackensack River At West Nyack flow report
As of July 14, 2026, Hackensack River At West Nyack is flowing at 15 cfs with a gage height of 2.53 ft, rising 27% over the past 24 hours. Source: USGS gauge #01376800, refreshed throughout the day.
Historical Data
Hackensack River At West Nyack at a glance
How Hackensack River At West Nyack is running right now, where it sits on the map, and the key gauge stats.
Hackensack River At West Nyack is flowing at 15 cfs, with the water sitting 2.53 ft at the gage. Flow is up 27% since yesterday — a rising hydrograph.
This is USGS gauge #01376800 in New York. Over the past 10 days the average has been 22 cfs, peaking at 72 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.
Streamflow Forecast
Over the next 5 days, Hackensack River At West Nyack Ny is expected to recede from today's 12 cfs, toward roughly 8 cfs by 2026-07-18 (likely range 4-17 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.
Hackensack River At West Nyack
The primary constituents of the river are runoff from urban and suburban areas, as well as agricultural and industrial areas. There are several dams along the river, including the Oradell Reservoir and the Lake Tappan Dam. The river experiences seasonal trends, with the highest flows typically occurring in the spring due to snowmelt and increased rainfall. Interestingly, the Hackensack River has historically been one of the most polluted waterways in the United States, but recent efforts have been made to improve its water quality through pollution control measures and habitat restoration.
Nearby streamflow levels
Cross-check Hackensack River At West Nyack's discharge against nearby gauges to spot whether the change here is local or regional.
| Gauge | Streamflow |
|---|---|
| Hackensack River At West Nyack Ny | 15 cfs |
| Pascack Brook At Park Ridge Nj | 7 cfs |
| Hackensack River At Rivervale Nj | 25 cfs |
| Saddle River At Upper Saddle River Nj | 4 cfs |
| Pascack Brook At Westwood Nj | 47 cfs |
| Mahwah River Near Suffern Ny | 5 cfs |
Nearby snowpack data
Snowpack at SNOTEL stations near Hackensack River At West Nyack. 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 |
|---|---|
| Spring Valley 1.7 Ssw | 0 in |
| Stony Point 0.7 Nw | 0 in |
| Oakland 0.9 Sse | 0 in |
| Greenwood Lake 3.0 Sw | 0 in |
| Little Falls Twp 0.5 Wnw | 0 in |
| West Milford Twp 2.5 Sse | 0 in |
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 Hackensack River At West Nyack in the Snoflo app
Save this gauge as a favorite, set push alerts when streamflow crosses a threshold (e.g. "alert me when Hackensack River At West Nyack crosses 5,000 cfs"), and Snoflo's iOS app will push the moment USGS reports the crossing.
About Hackensack River At West Nyack
Where does the streamflow data for Hackensack River At West Nyack come from?
Discharge, gage height, and water temperature come directly from the USGS streamflow gauge 01376800. 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 Hackensack River At West Nyack 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 Hackensack River At West Nyack report
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