New Jersey River Levels & Streamflow
As of Aug 8, 2026, New Jersey rivers are running at 206% of normal across 96 USGS gauges — the highest is 8,590 cfs on the Delaware River At Trenton Nj. Live discharge, gauge height, and percent-of-normal for every USGS streamgauge in New Jersey.
Streamflow levels across New Jersey are currently 206% of normal, with the Delaware River At Trenton Nj reporting the highest discharge in the state at 8,590 cfs and a gauge stage of 9.38 ft.
Meanwhile, the Rockaway River Below Reservoir At Boonton Nj is seeing a spike today — up 262% since yesterday and currently running near peak.
Tap any gauge below for the full hydrograph, paired weather forecast, and historical context. Use the rivers panel to jump into New Jersey's named rivers.
Active weather warnings for New Jersey
New Jersey is currently experiencing multiple weather and air quality threats on August 8th. A Heat Advisory remains in effect until 8 PM, with heat index values reaching 96-100 degrees across Bergen, Essex, Hudson, Passaic, Union, Morris, and Hunterdon counties, including major population centers like Newark, Jersey City, and Paterson. Warm nighttime conditions will provide little relief. Simultaneously, Air Quality Action Days and Code Orange alerts are in effect across northern and central counties (Bergen, Passaic, Hudson, Essex, Union, Monmouth, Middlesex, and Mercer), with ground-level ozone expected to approach unhealthy standards from 11 AM to 11 PM. Sensitive groups—children, elderly residents, and those with asthma or heart conditions—should limit outdoor activities and avoid strenuous exercise. Residents are urged to stay hydrated, seek air-conditioned spaces, and monitor local air quality updates at https://dep.nj.gov/airmon.
State-wide streamflow overview
The New Jersey flow picture in four data points -- where the state sits versus historical norms, what's flowing hardest, and what's spiking fastest.
Percent of normal
100% is the historical norm. Below 70% indicates drought; above 130% can flag elevated flood risk.
Highest discharge
Gauge stage 9.38 ft
Biggest 24h spike
Now 1,020 cfs
Network coverage
USGS gauges feeding 0 named rivers in New Jersey.
New Jersey USGS streamgauges
Every USGS gauge Snoflo tracks in New Jersey. Sortable, quickly filterable. Numeric columns heat-mapped from light to deep. Tap any gauge for its full hydrograph and forecast.
| Streamgage | Streamflow | Gage height | Water temp | Air temp | Elevation | Watershed |
|---|---|---|---|---|---|---|
|
Delaware River At Trenton Nj, Nj
9 hours ago · USGS 01463500 |
9,980 cfs | 9.64 ft | 81°F | 92°F | 7 ft | Middle Delaware-Musconetcong |
|
Delaware River At Belvidere Nj, Nj
9 hours ago · USGS 01446500 |
8,770 cfs | 5.87 ft | 49°F | 89°F | 232 ft | Middle Delaware-Musconetcong |
|
Delaware River At Montague Nj, Nj
9 hours ago · USGS 01438500 |
5,060 cfs | 6.59 ft | 78°F | 88°F | 374 ft | Middle Delaware-Mongaup-Brodhead |
|
Passaic River At Little Falls Nj, Nj
9 hours ago · USGS 01389500 |
2,410 cfs | 3.79 ft | · | 90°F | 131 ft | Hackensack-Passaic |
|
Hackensack River At New Milford Nj, Nj
9 hours ago · USGS 01378500 |
2,240 cfs | 5.26 ft | · | 90°F | 6 ft | Hackensack-Passaic |
|
North Branch Raritan River Near Raritan Nj, Nj
10 hours ago · USGS 01400000 |
1,970 cfs | 4.79 ft | · | 90°F | 51 ft | Raritan |
|
Passaic River At Pine Brook Nj, Nj
9 hours ago · USGS 01381900 |
1,770 cfs | 18.06 ft | · | 90°F | 167 ft | Hackensack-Passaic |
|
Raritan River At Manville Nj, Nj
9 hours ago · USGS 01400500 |
1,580 cfs | 5.76 ft | 80°F | 91°F | 43 ft | Raritan |
|
Hackensack River At Rivervale Nj, Nj
9 hours ago · USGS 01377000 |
1,290 cfs | 5.60 ft | · | 90°F | 36 ft | Hackensack-Passaic |
|
Raritan River Below Calco Dam At Bound Brook Nj, Nj
9 hours ago · USGS 01403060 |
1,230 cfs | 18.38 ft | · | 91°F | 18 ft | Raritan |
|
Pompton River At Pompton Plains Nj, Nj
9 hours ago · USGS 01388500 |
865 cfs | 9.57 ft | · | 90°F | 171 ft | Hackensack-Passaic |
|
Rockaway River Below Reservoir At Boonton Nj, Nj
9 hours ago · USGS 01381000 |
774 cfs | 3.96 ft | · | 89°F | 198 ft | Hackensack-Passaic |
|
Musconetcong River Near Bloomsbury Nj, Nj
9 hours ago · USGS 01457000 |
641 cfs | 2.81 ft | · | 87°F | 275 ft | Middle Delaware-Musconetcong |
|
Saddle River At Lodi Nj, Nj
9 hours ago · USGS 01391500 |
596 cfs | 3.48 ft | · | 90°F | 26 ft | Hackensack-Passaic |
|
South Branch Raritan River At Stanton Nj, Nj
10 hours ago · USGS 01397000 |
532 cfs | 3.75 ft | · | 90°F | 163 ft | Raritan |
|
South Branch Raritan River Near High Bridge Nj, Nj
10 hours ago · USGS 01396500 |
494 cfs | 7.48 ft | 66°F | 87°F | 424 ft | Raritan |
|
Pequest River At Pequest Nj, Nj
9 hours ago · USGS 01445500 |
452 cfs | 2.73 ft | 73°F | 88°F | 468 ft | Middle Delaware-Musconetcong |
|
Paulins Kill At Blairstown Nj, Nj
9 hours ago · USGS 01443500 |
429 cfs | 2.45 ft | 82°F | 88°F | 399 ft | Middle Delaware-Musconetcong |
|
Millstone River At Blackwells Mills Nj, Nj
9 hours ago · USGS 01402000 |
389 cfs | 2.43 ft | 81°F | 90°F | 29 ft | Raritan |
|
Ramapo River At Pompton Lakes Nj, Nj
9 hours ago · USGS 01388000 |
368 cfs | 7.96 ft | 78°F | 90°F | 197 ft | Hackensack-Passaic |
|
Rahway River At Rahway Nj, Nj
9 hours ago · USGS 01395000 |
365 cfs | 2.81 ft | · | 91°F | 15 ft | Sandy Hook-Staten Island |
|
Pequannock River At Riverdale Nj, Nj
9 hours ago · USGS 01382800 |
361 cfs | 3.57 ft | · | 89°F | 202 ft | Hackensack-Passaic |
|
North Branch Raritan River Near Far Hills Nj, Nj
10 hours ago · USGS 01398500 |
346 cfs | 2.88 ft | · | 89°F | 208 ft | Raritan |
|
Bound Bk At Middlesex Nj, Nj
10 hours ago · USGS 01403900 |
322 cfs | 3.27 ft | · | 89°F | 28 ft | Raritan |
|
Pascack Brook At Westwood Nj, Nj
9 hours ago · USGS 01377500 |
284 cfs | 2.95 ft | · | 90°F | 24 ft | Hackensack-Passaic |
|
Passaic River Near Chatham Nj, Nj
9 hours ago · USGS 01379500 |
253 cfs | 4.33 ft | · | 90°F | 199 ft | Hackensack-Passaic |
|
Assunpink Creek At Trenton Nj, Nj
9 hours ago · USGS 01464000 |
222 cfs | 3.65 ft | · | 92°F | 25 ft | Middle Delaware-Musconetcong |
|
Whippany River Near Pine Brook Nj, Nj
9 hours ago · USGS 01381800 |
193 cfs | 6.80 ft | 78°F | 90°F | 170 ft | Hackensack-Passaic |
|
Ramapo River Near Mahwah Nj, Nj
9 hours ago · USGS 01387500 |
192 cfs | 3.72 ft | · | 89°F | 259 ft | Hackensack-Passaic |
|
Pequannock R At Macopin Intake Dam Nj, Nj
9 hours ago · USGS 01382500 |
185 cfs | 3.63 ft | · | 87°F | 574 ft | Hackensack-Passaic |
|
Whippany River At Morristown Nj, Nj
9 hours ago · USGS 01381500 |
161 cfs | 3.09 ft | · | 89°F | 265 ft | Hackensack-Passaic |
|
Lawrence Bk At Westons Mills Nj, Nj
9 hours ago · USGS 01405030 |
153 cfs | 16.15 ft | · | 92°F | 2 ft | Raritan |
|
Toms River Near Toms River Nj, Nj
10 hours ago · USGS 01408500 |
139 cfs | 3.74 ft | · | 93°F | 20 ft | Mullica-Toms |
|
Saddle River At Ridgewood Nj, Nj
9 hours ago · USGS 01390500 |
133 cfs | 1.91 ft | · | 90°F | 76 ft | Hackensack-Passaic |
|
Delaware And Raritan Canal At Port Mercer Nj, Nj
9 hours ago · USGS 01460440 |
128 cfs | 55.19 ft | 81°F | 91°F | 52 ft | Middle Delaware-Musconetcong |
|
Lamington (Black) River Near Pottersville Nj, Nj
9 hours ago · USGS 01399500 |
120 cfs | 2.27 ft | · | 88°F | 422 ft | Raritan |
|
Whippany River Near Morristown Nj, Nj
10 hours ago · USGS 01381400 |
119 cfs | 4.61 ft | · | 89°F | 314 ft | Hackensack-Passaic |
|
Musconetcong River At Outlet Of Lake Hopatcong Nj, Nj
9 hours ago · USGS 01455500 |
111 cfs | 2.68 ft | · | 86°F | 923 ft | Middle Delaware-Musconetcong |
|
Passaic River Near Millington Nj, Nj
9 hours ago · USGS 01379000 |
111 cfs | 5.36 ft | · | 89°F | 232 ft | Hackensack-Passaic |
|
Rahway River Near Springfield Nj, Nj
9 hours ago · USGS 01394500 |
109 cfs | 2.15 ft | · | 91°F | 67 ft | Sandy Hook-Staten Island |
|
Pequest River At Huntsville Nj, Nj
9 hours ago · USGS 01445000 |
106 cfs | 3.14 ft | · | 87°F | 566 ft | Middle Delaware-Musconetcong |
|
Manalapan Brook At Spotswood Nj, Nj
9 hours ago · USGS 01405400 |
101 cfs | 10.90 ft | · | 91°F | 17 ft | Raritan |
|
Sb Rockaway Creek At Whitehouse Station Nj, Nj
10 hours ago · USGS 01399670 |
89 cfs | 2.84 ft | · | 90°F | 169 ft | Raritan |
|
Pascack Brook At Park Ridge Nj, Nj
9 hours ago · USGS 01377370 |
87 cfs | 3.22 ft | · | 90°F | 118 ft | Hackensack-Passaic |
|
Beaver Brook Near Belvidere Nj, Nj
9 hours ago · USGS 01446000 |
86 cfs | 2.32 ft | · | 88°F | 358 ft | Middle Delaware-Musconetcong |
|
Canoe Brook Near Summit Nj, Nj
9 hours ago · USGS 01379530 |
84 cfs | 12.61 ft | 76°F | 90°F | 172 ft | Hackensack-Passaic |
|
Hohokus Brook At Ho-Ho-Kus Nj, Nj
9 hours ago · USGS 01391000 |
83 cfs | 1.86 ft | · | 90°F | 125 ft | Hackensack-Passaic |
|
Green Pd Bk Bl Picatinny Lk At Picatinny Ars Nj, Nj
9 hours ago · USGS 01379780 |
82 cfs | 3.07 ft | · | 86°F | 697 ft | Hackensack-Passaic |
|
Maurice River At Norma Nj, Nj
9 hours ago · USGS 01411500 |
81 cfs | 2.59 ft | 74°F | 91°F | 49 ft | Cohansey-Maurice |
|
Green Pond Brook At Picatinny Arsenal Nj, Nj
9 hours ago · USGS 01379773 |
69 cfs | 2.31 ft | · | 86°F | 717 ft | Hackensack-Passaic |
|
West Branch Wading River Near Jenkins Nj, Nj
9 hours ago · USGS 01409810 |
68 cfs | 10.68 ft | · | 92°F | 22 ft | Mullica-Toms |
|
Wanaque River At Awosting Nj, Nj
10 hours ago · USGS 01383500 |
68 cfs | 2.41 ft | · | 87°F | 603 ft | Hackensack-Passaic |
|
North Branch Rancocas Creek At Pemberton Nj, Nj
9 hours ago · USGS 01467000 |
67 cfs | 1.58 ft | 80°F | 92°F | 33 ft | Lower Delaware |
|
Crosswicks Creek At Extonville Nj, Nj
9 hours ago · USGS 01464500 |
62 cfs | 2.84 ft | 80°F | 91°F | 30 ft | Crosswicks-Neshaminy |
|
Assunpink Creek Near Clarksville Nj, Nj
10 hours ago · USGS 01463620 |
56 cfs | 4.33 ft | · | 91°F | 51 ft | Middle Delaware-Musconetcong |
|
Great Egg Harbor River At Folsom Nj, Nj
10 hours ago · USGS 01411000 |
53 cfs | 3.70 ft | · | 92°F | 109 ft | Great Egg Harbor |
|
Flat Brook Near Flatbrookville Nj, Nj
10 hours ago · USGS 01440000 |
50 cfs | 2.17 ft | 70°F | 88°F | 358 ft | Middle Delaware-Mongaup-Brodhead |
|
Saddle River At Upper Saddle River Nj, Nj
9 hours ago · USGS 01390450 |
47 cfs | 2.42 ft | · | 89°F | 190 ft | Hackensack-Passaic |
|
Elizabeth R At Ursino Lake At Elizabeth Nj, Nj
9 hours ago · USGS 01393450 |
37 cfs | 13.80 ft | · | 91°F | 21 ft | Sandy Hook-Staten Island |
|
Mullica River Near Batsto Nj, Nj
10 hours ago · USGS 01409400 |
36 cfs | · | · | 92°F | 13 ft | Mullica-Toms |
|
Neshanic River At Reaville Nj, Nj
9 hours ago · USGS 01398000 |
35 cfs | 2.98 ft | · | 91°F | 118 ft | Raritan |
|
Oswego River At Harrisville Nj, Nj
9 hours ago · USGS 01410000 |
34 cfs | 10.29 ft | · | 92°F | 6 ft | Mullica-Toms |
|
South Branch Rancocas Creek At Vincentown Nj, Nj
9 hours ago · USGS 01465850 |
33 cfs | · | 68°F | 92°F | 17 ft | Lower Delaware |
|
Ringwood Creek Near Wanaque Nj, Nj
10 hours ago · USGS 01384500 |
32 cfs | 10.65 ft | · | 88°F | 302 ft | Hackensack-Passaic |
|
Great Egg Harbor R Nr Blue Anchor Nj, Nj
10 hours ago · USGS 01410820 |
30 cfs | 2.53 ft | · | 92°F | 92 ft | Great Egg Harbor |
|
North Branch Metedeconk River Near Lakewood Nj, Nj
9 hours ago · USGS 01408120 |
29 cfs | 2.78 ft | · | 92°F | 19 ft | Mullica-Toms |
|
West Brook Near Wanaque Nj, Nj
9 hours ago · USGS 01386000 |
29 cfs | · | · | 89°F | 318 ft | Hackensack-Passaic |
|
Manasquan River At Squankum Nj, Nj
9 hours ago · USGS 01408000 |
29 cfs | 2.54 ft | 65°F | 92°F | 36 ft | Mullica-Toms |
|
Eb Paulins Kill Near Lafayette Nj, Nj
9 hours ago · USGS 01443280 |
29 cfs | 2.67 ft | · | 87°F | 567 ft | Middle Delaware-Musconetcong |
|
Deep Run At Old Bridge Nj, Nj
9 hours ago · USGS 01406050 |
27 cfs | 7.02 ft | · | 92°F | 5 ft | Raritan |
|
Stony Brook At Princeton Nj, Nj
9 hours ago · USGS 01401000 |
27 cfs | 1.84 ft | 68°F | 91°F | 61 ft | Raritan |
|
Greenwood Branch At New Lisbon Nj, Nj
9 hours ago · USGS 01466900 |
25 cfs | 1.87 ft | 78°F | 92°F | 38 ft | Lower Delaware |
|
Yards Creek Near Blairstown Nj, Nj
10 hours ago · USGS 01443900 |
22 cfs | 2.53 ft | · | 86°F | 660 ft | Middle Delaware-Musconetcong |
|
Cohansey River At Seeley Nj, Nj
9 hours ago · USGS 01412800 |
18 cfs | 2.83 ft | 70°F | 92°F | 30 ft | Cohansey-Maurice |
|
Second River At Belleville Nj, Nj
9 hours ago · USGS 01392500 |
14 cfs | 1.53 ft | · | 90°F | 85 ft | Hackensack-Passaic |
|
Green Brook At Seeley Mills Nj, Nj
9 hours ago · USGS 01403400 |
14 cfs | 2.29 ft | · | 90°F | 218 ft | Raritan |
|
Wanaque R At Wanaque Nj, Nj
9 hours ago · USGS 01387000 |
13 cfs | 1.30 ft | · | 89°F | 221 ft | Hackensack-Passaic |
|
Westecunk Creek At Stafford Forge Nj, Nj
9 hours ago · USGS 01409280 |
13 cfs | 10.75 ft | 80°F | 91°F | 67 ft | Mullica-Toms |
|
Great Egg Harbor R Nr Sicklerville Nj, Nj
10 hours ago · USGS 01410784 |
12 cfs | 4.09 ft | · | 91°F | 116 ft | Great Egg Harbor |
|
Manasquan R Nr Allenwood Nj, Nj
9 hours ago · USGS 01408029 |
12 cfs | 7.33 ft | 75°F | 92°F | 51 ft | Mullica-Toms |
|
Raccoon Creek Near Swedesboro Nj, Nj
9 hours ago · USGS 01477120 |
12 cfs | 8.51 ft | 76°F | 91°F | 11 ft | Lower Delaware |
|
Mulhockaway Creek At Van Syckel Nj, Nj
10 hours ago · USGS 01396660 |
10 cfs | · | · | 89°F | 287 ft | Raritan |
|
Jumping Brook Near Neptune City Nj, Nj
9 hours ago · USGS 01407760 |
10 cfs | 1.71 ft | · | 91°F | 42 ft | Sandy Hook-Staten Island |
|
Spruce Run At Clinton Nj, Nj
9 hours ago · USGS 01396800 |
8 cfs | 1.39 ft | 78°F | 89°F | 196 ft | Raritan |
|
Cooper River At Haddonfield Nj, Nj
10 hours ago · USGS 01467150 |
8 cfs | 1.36 ft | 83°F | 92°F | 10 ft | Lower Delaware |
|
Tuckahoe River At Head Of River Nj, Nj
9 hours ago · USGS 01411300 |
7 cfs | 3.84 ft | · | 92°F | 8 ft | Great Egg Harbor |
|
Salem River At Woodstown Nj, Nj
9 hours ago · USGS 01482500 |
6 cfs | 11.09 ft | · | 91°F | 28 ft | Cohansey-Maurice |
|
Big Brook Near Marlboro Nj, Nj
9 hours ago · USGS 01407290 |
6 cfs | 9.57 ft | · | 92°F | 65 ft | Sandy Hook-Staten Island |
|
East Branch Bass River Near New Gretna Nj, Nj
9 hours ago · USGS 01410150 |
5 cfs | 3.44 ft | · | 93°F | 6 ft | Mullica-Toms |
|
South Branch Pennsauken Creek At Cherry Hill Nj, Nj
9 hours ago · USGS 01467081 |
4 cfs | 1.94 ft | 78°F | 92°F | 18 ft | Lower Delaware |
|
Stony Brook At Watchung Nj, Nj
9 hours ago · USGS 01403540 |
4 cfs | 9.65 ft | · | 90°F | 181 ft | Raritan |
|
Pike Run At Belle Mead Nj, Nj
9 hours ago · USGS 01401650 |
3 cfs | 3.04 ft | · | 91°F | 62 ft | Raritan |
|
Shark River Near Neptune City Nj, Nj
9 hours ago · USGS 01407705 |
2 cfs | 1.32 ft | · | 91°F | 37 ft | Sandy Hook-Staten Island |
|
Mcdonalds Branch In Lebanon State Forest Nj, Nj
9 hours ago · USGS 01466500 |
1 cfs | · | 70°F | 92°F | 115 ft | Lower Delaware |
|
West Branch Middle Brook Near Martinsville Nj, Nj
9 hours ago · USGS 01403150 |
0 cfs | 2.03 ft | · | 89°F | 249 ft | Raritan |
|
Swimming River Near Red Bank Nj, Nj
9 hours ago · USGS 01407500 |
0 cfs | 3.93 ft | · | 91°F | 33 ft | Sandy Hook-Staten Island |
See every New Jersey gauge ranked against normal.
- Percentile rank & % of median for all 96 gauges
- 15-day PULSE forecast on every gauge
- Custom flow alerts & full daily history
About New Jersey streamflow
What are river levels like in New Jersey right now?
As of August 8, 2026, New Jersey rivers are running at 206% of normal across 96 USGS streamgauges, and the Delaware River At Trenton Nj is reporting the highest discharge at 8,590 cfs. The full sortable gauge table is below.
Which New Jersey river is running highest right now?
As of August 8, 2026, the highest discharge in New Jersey is 8,590 cfs on the Delaware River At Trenton Nj. See the sortable gauge table for the full statewide ranking.
Are New Jersey rivers high or low right now?
Compare the statewide percent-of-normal on this page: above 100% means New Jersey rivers are running higher than the seasonal average for the date, below 100% means lower (a dry spell or drought). Each gauge also shows its own percent of median.
Where does the New Jersey streamflow data come from?
The U.S. Geological Survey National Water Information System. USGS streamgauges report continuously (every 15 minutes) and the data is the canonical real-time record for U.S. rivers. Snoflo pulls the latest readings and joins them to a 7-day NOAA weather forecast for each station.
What is cfs?
Cubic feet per second — the standard unit for streamflow. One cfs is about 7.5 gallons per second. Small creeks run at single-digit cfs; the Mississippi at hundreds of thousands.
What does Gauge Height mean?
The water level at the gauge in feet above the reference datum. Used together with discharge to track river state. Flood stage and runnable levels are typically expressed in gauge height (e.g., "flood at 16 ft").
How fresh is the New Jersey data?
USGS streamgauges report every 15 minutes; Snoflo re-pulls throughout the day. The AI briefing regenerates daily.
Can I get a flow alert for a New Jersey gauge?
Yes. Save any USGS gauge as a favorite in the Snoflo iOS app, set a discharge or stage threshold (e.g. "alert me when discharge crosses 2,000 cfs"), and you'll get a push the moment it crosses.
Is this a substitute for an NWS flood warning?
No. Snoflo is informational. For flood life-safety decisions always follow guidance from your local NWS forecast office and state emergency management. Snoflo data is one input among several.
Streamflow in every state
Create a free account, or sign in.
Get the free New Jersey report — alerts, favorites, and history & forecasts, plus the free iPhone app.