New Jersey River Levels & Streamflow
As of Sep 12, 2026, New Jersey rivers are running at 110% of normal across 96 USGS gauges — the highest is 5,490 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 110% of normal, with the Delaware River At Trenton Nj reporting the highest discharge in the state at 5,490 cfs and a gauge stage of 9.09 ft.
Meanwhile, the Raritan River At Manville Nj is seeing a spike today — up 2% 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
A Flood Watch has been issued for northeast New Jersey from late September 12 through Sunday morning, September 13 at 11:00AM EDT. Heavy rainfall and thunderstorms are expected to bring 1-2 inches of rain with peak hourly rates reaching 1.5-2 inches, creating dangerous flash flooding conditions. Residents in Bergen, Essex, Passaic, Union, and Hudson counties—including major areas around Newark, Jersey City, and surrounding communities—should prepare for excessive runoff in poor drainage areas, rivers, creeks, and low-lying locations. Monitor local weather updates closely, avoid flooded roadways, and be ready to relocate to higher ground if necessary during this period.
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 9.09 ft
Biggest 24h spike
Now 238 cfs
Network coverage
USGS gauges feeding 0 named rivers in New Jersey.
Where every gauge actually sits
One dot per New Jersey streamgauge, placed by its own percent of normal. The state average is a single line through all of it.
Percent of normal compares today's discharge with the historical average for this calendar day. Tap any dot to open that gauge.
New Jersey streamflow, three water years
Statewide percent of normal, every day since Sep 2023. The dotted line is normal.
799 daily readings from 96 reporting gauges. Percent of normal is today's statewide discharge against the historical average for the same calendar day — 100% is normal, not "good". The axis tops out at 250%: 36 readings above that — including the 732% peak in Dec 2023 — are drawn along the top edge, so a few flood days cannot flatten three years of everything else. The line breaks in 2 places where the record skips more than five days — those are gaps in reporting, not readings of zero.
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
10 hours ago · USGS 01463500 |
5,320 cfs | 9.05 ft | 74°F | 59°F | 7 ft | Middle Delaware-Musconetcong |
|
Delaware River At Belvidere Nj, Nj
9 hours ago · USGS 01446500 |
4,490 cfs | 4.53 ft | 49°F | 55°F | 232 ft | Middle Delaware-Musconetcong |
|
Delaware River At Montague Nj, Nj
9 hours ago · USGS 01438500 |
3,470 cfs | 6.14 ft | 71°F | 49°F | 374 ft | Middle Delaware-Mongaup-Brodhead |
|
Passaic River At Little Falls Nj, Nj
9 hours ago · USGS 01389500 |
322 cfs | 1.10 ft | · | 80°F | 131 ft | Hackensack-Passaic |
|
Raritan River At Manville Nj, Nj
10 hours ago · USGS 01400500 |
228 cfs | 4.10 ft | 74°F | 81°F | 43 ft | Raritan |
|
Passaic River At Pine Brook Nj, Nj
10 hours ago · USGS 01381900 |
171 cfs | 12.39 ft | · | 81°F | 167 ft | Hackensack-Passaic |
|
Pompton River At Pompton Plains Nj, Nj
9 hours ago · USGS 01388500 |
157 cfs | 7.94 ft | · | 79°F | 171 ft | Hackensack-Passaic |
|
Raritan River Below Calco Dam At Bound Brook Nj, Nj
10 hours ago · USGS 01403060 |
152 cfs | 16.62 ft | · | 81°F | 18 ft | Raritan |
|
Millstone River At Blackwells Mills Nj, Nj
10 hours ago · USGS 01402000 |
137 cfs | 1.82 ft | 75°F | 81°F | 29 ft | Raritan |
|
Delaware And Raritan Canal At Port Mercer Nj, Nj
9 hours ago · USGS 01460440 |
135 cfs | 55.19 ft | 75°F | 81°F | 52 ft | Middle Delaware-Musconetcong |
|
Musconetcong River Near Bloomsbury Nj, Nj
10 hours ago · USGS 01457000 |
108 cfs | 1.48 ft | · | 56°F | 275 ft | Middle Delaware-Musconetcong |
|
North Branch Raritan River Near Raritan Nj, Nj
10 hours ago · USGS 01400000 |
97 cfs | 2.70 ft | · | 81°F | 51 ft | Raritan |
|
Maurice River At Norma Nj, Nj
10 hours ago · USGS 01411500 |
91 cfs | 2.60 ft | 74°F | 61°F | 49 ft | Cohansey-Maurice |
|
Ramapo River At Pompton Lakes Nj, Nj
10 hours ago · USGS 01388000 |
88 cfs | 7.11 ft | 74°F | 80°F | 197 ft | Hackensack-Passaic |
|
South Branch Raritan River At Stanton Nj, Nj
10 hours ago · USGS 01397000 |
83 cfs | 2.63 ft | · | 80°F | 163 ft | Raritan |
|
Paulins Kill At Blairstown Nj, Nj
10 hours ago · USGS 01443500 |
72 cfs | 1.62 ft | 82°F | 53°F | 399 ft | Middle Delaware-Musconetcong |
|
Pequest River At Pequest Nj, Nj
10 hours ago · USGS 01445500 |
70 cfs | 1.57 ft | 63°F | 55°F | 468 ft | Middle Delaware-Musconetcong |
|
Ramapo River Near Mahwah Nj, Nj
9 hours ago · USGS 01387500 |
69 cfs | 2.64 ft | · | 79°F | 259 ft | Hackensack-Passaic |
|
Saddle River At Lodi Nj, Nj
9 hours ago · USGS 01391500 |
66 cfs | 2.12 ft | · | 80°F | 26 ft | Hackensack-Passaic |
|
Toms River Near Toms River Nj, Nj
10 hours ago · USGS 01408500 |
66 cfs | 3.11 ft | · | 61°F | 20 ft | Mullica-Toms |
|
Pascack Brook At Westwood Nj, Nj
9 hours ago · USGS 01377500 |
51 cfs | 1.76 ft | · | 81°F | 24 ft | Hackensack-Passaic |
|
South Branch Raritan River Near High Bridge Nj, Nj
9 hours ago · USGS 01396500 |
49 cfs | 5.93 ft | 66°F | 79°F | 424 ft | Raritan |
|
Whippany River Near Pine Brook Nj, Nj
10 hours ago · USGS 01381800 |
46 cfs | 2.78 ft | 70°F | 80°F | 170 ft | Hackensack-Passaic |
|
West Branch Wading River Near Jenkins Nj, Nj
10 hours ago · USGS 01409810 |
45 cfs | 10.38 ft | · | 58°F | 22 ft | Mullica-Toms |
|
North Branch Rancocas Creek At Pemberton Nj, Nj
9 hours ago · USGS 01467000 |
45 cfs | 1.56 ft | 72°F | 59°F | 33 ft | Lower Delaware |
|
Passaic River Near Chatham Nj, Nj
9 hours ago · USGS 01379500 |
44 cfs | 3.46 ft | · | 79°F | 199 ft | Hackensack-Passaic |
|
Assunpink Creek At Trenton Nj, Nj
10 hours ago · USGS 01464000 |
38 cfs | 2.65 ft | · | 59°F | 25 ft | Middle Delaware-Musconetcong |
|
Mullica River Near Batsto Nj, Nj
10 hours ago · USGS 01409400 |
38 cfs | · | · | 59°F | 13 ft | Mullica-Toms |
|
Hackensack River At Rivervale Nj, Nj
10 hours ago · USGS 01377000 |
36 cfs | 1.70 ft | · | 81°F | 36 ft | Hackensack-Passaic |
|
Spruce Run At Clinton Nj, Nj
10 hours ago · USGS 01396800 |
33 cfs | 1.65 ft | 78°F | 80°F | 196 ft | Raritan |
|
Great Egg Harbor River At Folsom Nj, Nj
10 hours ago · USGS 01411000 |
33 cfs | 3.58 ft | · | 59°F | 109 ft | Great Egg Harbor |
|
Beaver Brook Near Belvidere Nj, Nj
10 hours ago · USGS 01446000 |
32 cfs | 1.85 ft | · | 54°F | 358 ft | Middle Delaware-Musconetcong |
|
Oswego River At Harrisville Nj, Nj
9 hours ago · USGS 01410000 |
30 cfs | 10.27 ft | · | 59°F | 6 ft | Mullica-Toms |
|
Crosswicks Creek At Extonville Nj, Nj
9 hours ago · USGS 01464500 |
28 cfs | 2.36 ft | 70°F | 59°F | 30 ft | Crosswicks-Neshaminy |
|
Pequannock River At Riverdale Nj, Nj
9 hours ago · USGS 01382800 |
27 cfs | 2.03 ft | · | 78°F | 202 ft | Hackensack-Passaic |
|
Greenwood Branch At New Lisbon Nj, Nj
9 hours ago · USGS 01466900 |
25 cfs | 1.87 ft | 70°F | 59°F | 38 ft | Lower Delaware |
|
Passaic River Near Millington Nj, Nj
9 hours ago · USGS 01379000 |
24 cfs | 4.64 ft | · | 80°F | 232 ft | Hackensack-Passaic |
|
Great Egg Harbor R Nr Blue Anchor Nj, Nj
10 hours ago · USGS 01410820 |
23 cfs | 2.32 ft | · | 59°F | 92 ft | Great Egg Harbor |
|
Lamington (Black) River Near Pottersville Nj, Nj
10 hours ago · USGS 01399500 |
23 cfs | 1.70 ft | · | 78°F | 422 ft | Raritan |
|
Hohokus Brook At Ho-Ho-Kus Nj, Nj
9 hours ago · USGS 01391000 |
23 cfs | 1.42 ft | · | 81°F | 125 ft | Hackensack-Passaic |
|
Manalapan Brook At Spotswood Nj, Nj
10 hours ago · USGS 01405400 |
22 cfs | 9.93 ft | · | 81°F | 17 ft | Raritan |
|
Musconetcong River At Outlet Of Lake Hopatcong Nj, Nj
9 hours ago · USGS 01455500 |
21 cfs | 1.51 ft | · | 55°F | 923 ft | Middle Delaware-Musconetcong |
|
Bound Bk At Middlesex Nj, Nj
9 hours ago · USGS 01403900 |
21 cfs | 1.62 ft | · | 80°F | 28 ft | Raritan |
|
South Branch Rancocas Creek At Vincentown Nj, Nj
10 hours ago · USGS 01465850 |
20 cfs | · | 68°F | 59°F | 17 ft | Lower Delaware |
|
Wanaque R At Wanaque Nj, Nj
10 hours ago · USGS 01387000 |
20 cfs | 1.40 ft | · | 79°F | 221 ft | Hackensack-Passaic |
|
Flat Brook Near Flatbrookville Nj, Nj
10 hours ago · USGS 01440000 |
19 cfs | 1.93 ft | 70°F | 53°F | 358 ft | Middle Delaware-Mongaup-Brodhead |
|
Manasquan River At Squankum Nj, Nj
9 hours ago · USGS 01408000 |
19 cfs | 2.43 ft | 65°F | 62°F | 36 ft | Mullica-Toms |
|
Whippany River At Morristown Nj, Nj
9 hours ago · USGS 01381500 |
17 cfs | 2.04 ft | · | 79°F | 265 ft | Hackensack-Passaic |
|
Raccoon Creek Near Swedesboro Nj, Nj
9 hours ago · USGS 01477120 |
17 cfs | 8.75 ft | 69°F | 60°F | 11 ft | Lower Delaware |
|
North Branch Metedeconk River Near Lakewood Nj, Nj
10 hours ago · USGS 01408120 |
16 cfs | 2.37 ft | · | 63°F | 19 ft | Mullica-Toms |
|
Cohansey River At Seeley Nj, Nj
10 hours ago · USGS 01412800 |
16 cfs | 2.79 ft | 70°F | 62°F | 30 ft | Cohansey-Maurice |
|
Pequest River At Huntsville Nj, Nj
10 hours ago · USGS 01445000 |
16 cfs | 2.57 ft | · | 53°F | 566 ft | Middle Delaware-Musconetcong |
|
Lawrence Bk At Westons Mills Nj, Nj
9 hours ago · USGS 01405030 |
16 cfs | 15.81 ft | · | 81°F | 2 ft | Raritan |
|
Eb Paulins Kill Near Lafayette Nj, Nj
9 hours ago · USGS 01443280 |
15 cfs | 2.28 ft | · | 52°F | 567 ft | Middle Delaware-Musconetcong |
|
Rahway River At Rahway Nj, Nj
9 hours ago · USGS 01395000 |
15 cfs | 1.46 ft | · | 80°F | 15 ft | Sandy Hook-Staten Island |
|
Westecunk Creek At Stafford Forge Nj, Nj
10 hours ago · USGS 01409280 |
15 cfs | 10.79 ft | 80°F | 59°F | 67 ft | Mullica-Toms |
|
Saddle River At Ridgewood Nj, Nj
10 hours ago · USGS 01390500 |
14 cfs | · | · | 81°F | 76 ft | Hackensack-Passaic |
|
Rockaway River Below Reservoir At Boonton Nj, Nj
9 hours ago · USGS 01381000 |
13 cfs | 1.67 ft | · | 79°F | 198 ft | Hackensack-Passaic |
|
Assunpink Creek Near Clarksville Nj, Nj
10 hours ago · USGS 01463620 |
13 cfs | 3.74 ft | · | 58°F | 51 ft | Middle Delaware-Musconetcong |
|
Stony Brook At Princeton Nj, Nj
9 hours ago · USGS 01401000 |
13 cfs | 1.60 ft | 68°F | 81°F | 61 ft | Raritan |
|
North Branch Raritan River Near Far Hills Nj, Nj
9 hours ago · USGS 01398500 |
12 cfs | 1.97 ft | · | 80°F | 208 ft | Raritan |
|
Rahway River Near Springfield Nj, Nj
9 hours ago · USGS 01394500 |
12 cfs | 1.32 ft | · | 81°F | 67 ft | Sandy Hook-Staten Island |
|
Tuckahoe River At Head Of River Nj, Nj
10 hours ago · USGS 01411300 |
11 cfs | 3.93 ft | · | 61°F | 8 ft | Great Egg Harbor |
|
Wanaque River At Awosting Nj, Nj
10 hours ago · USGS 01383500 |
11 cfs | 1.81 ft | · | 78°F | 603 ft | Hackensack-Passaic |
|
Manasquan R Nr Allenwood Nj, Nj
10 hours ago · USGS 01408029 |
10 cfs | 7.24 ft | 68°F | 63°F | 51 ft | Mullica-Toms |
|
Pequannock R At Macopin Intake Dam Nj, Nj
9 hours ago · USGS 01382500 |
9 cfs | 2.13 ft | · | 76°F | 574 ft | Hackensack-Passaic |
|
Great Egg Harbor R Nr Sicklerville Nj, Nj
10 hours ago · USGS 01410784 |
9 cfs | 4.03 ft | · | 59°F | 116 ft | Great Egg Harbor |
|
Elizabeth R At Ursino Lake At Elizabeth Nj, Nj
9 hours ago · USGS 01393450 |
9 cfs | 13.27 ft | · | 80°F | 21 ft | Sandy Hook-Staten Island |
|
Second River At Belleville Nj, Nj
10 hours ago · USGS 01392500 |
9 cfs | 1.36 ft | · | 80°F | 85 ft | Hackensack-Passaic |
|
Pascack Brook At Park Ridge Nj, Nj
9 hours ago · USGS 01377370 |
9 cfs | 2.79 ft | · | 81°F | 118 ft | Hackensack-Passaic |
|
Ringwood Creek Near Wanaque Nj, Nj
10 hours ago · USGS 01384500 |
7 cfs | 10.33 ft | · | 78°F | 302 ft | Hackensack-Passaic |
|
Cooper River At Haddonfield Nj, Nj
10 hours ago · USGS 01467150 |
6 cfs | 1.29 ft | 73°F | 62°F | 10 ft | Lower Delaware |
|
East Branch Bass River Near New Gretna Nj, Nj
9 hours ago · USGS 01410150 |
6 cfs | 3.49 ft | · | 60°F | 6 ft | Mullica-Toms |
|
Hackensack River At New Milford Nj, Nj
10 hours ago · USGS 01378500 |
6 cfs | 1.42 ft | · | 81°F | 6 ft | Hackensack-Passaic |
|
Green Pd Bk Bl Picatinny Lk At Picatinny Ars Nj, Nj
9 hours ago · USGS 01379780 |
6 cfs | 2.42 ft | · | 77°F | 697 ft | Hackensack-Passaic |
|
Saddle River At Upper Saddle River Nj, Nj
10 hours ago · USGS 01390450 |
5 cfs | 1.84 ft | · | 80°F | 190 ft | Hackensack-Passaic |
|
Mulhockaway Creek At Van Syckel Nj, Nj
10 hours ago · USGS 01396660 |
5 cfs | · | · | 79°F | 287 ft | Raritan |
|
Shark River Near Neptune City Nj, Nj
9 hours ago · USGS 01407705 |
5 cfs | 1.41 ft | · | 77°F | 37 ft | Sandy Hook-Staten Island |
|
West Brook Near Wanaque Nj, Nj
10 hours ago · USGS 01386000 |
5 cfs | · | · | 79°F | 318 ft | Hackensack-Passaic |
|
Green Pond Brook At Picatinny Arsenal Nj, Nj
9 hours ago · USGS 01379773 |
5 cfs | 1.47 ft | · | 77°F | 717 ft | Hackensack-Passaic |
|
Neshanic River At Reaville Nj, Nj
10 hours ago · USGS 01398000 |
4 cfs | 2.42 ft | · | 81°F | 118 ft | Raritan |
|
Whippany River Near Morristown Nj, Nj
10 hours ago · USGS 01381400 |
4 cfs | 2.17 ft | · | 78°F | 314 ft | Hackensack-Passaic |
|
Sb Rockaway Creek At Whitehouse Station Nj, Nj
10 hours ago · USGS 01399670 |
4 cfs | 1.75 ft | · | 80°F | 169 ft | Raritan |
|
Big Brook Near Marlboro Nj, Nj
10 hours ago · USGS 01407290 |
3 cfs | 9.50 ft | · | 79°F | 65 ft | Sandy Hook-Staten Island |
|
Salem River At Woodstown Nj, Nj
10 hours ago · USGS 01482500 |
3 cfs | 11.07 ft | · | 62°F | 28 ft | Cohansey-Maurice |
|
Swimming River Near Red Bank Nj, Nj
10 hours ago · USGS 01407500 |
3 cfs | 4.68 ft | · | 79°F | 33 ft | Sandy Hook-Staten Island |
|
Deep Run At Old Bridge Nj, Nj
10 hours ago · USGS 01406050 |
3 cfs | 6.73 ft | · | 81°F | 5 ft | Raritan |
|
South Branch Pennsauken Creek At Cherry Hill Nj, Nj
10 hours ago · USGS 01467081 |
2 cfs | 1.83 ft | 70°F | 63°F | 18 ft | Lower Delaware |
|
Green Brook At Seeley Mills Nj, Nj
9 hours ago · USGS 01403400 |
2 cfs | 1.85 ft | · | 80°F | 218 ft | Raritan |
|
Canoe Brook Near Summit Nj, Nj
10 hours ago · USGS 01379530 |
2 cfs | 11.24 ft | 72°F | 81°F | 172 ft | Hackensack-Passaic |
|
Yards Creek Near Blairstown Nj, Nj
10 hours ago · USGS 01443900 |
2 cfs | 1.89 ft | · | 54°F | 660 ft | Middle Delaware-Musconetcong |
|
Jumping Brook Near Neptune City Nj, Nj
10 hours ago · USGS 01407760 |
1 cfs | 1.40 ft | · | 77°F | 42 ft | Sandy Hook-Staten Island |
|
Stony Brook At Watchung Nj, Nj
9 hours ago · USGS 01403540 |
1 cfs | 9.51 ft | · | 80°F | 181 ft | Raritan |
|
Pike Run At Belle Mead Nj, Nj
10 hours ago · USGS 01401650 |
1 cfs | 2.94 ft | · | 81°F | 62 ft | Raritan |
|
Mcdonalds Branch In Lebanon State Forest Nj, Nj
10 hours ago · USGS 01466500 |
1 cfs | · | 66°F | 59°F | 115 ft | Lower Delaware |
|
West Branch Middle Brook Near Martinsville Nj, Nj
9 hours ago · USGS 01403150 |
0 cfs | 1.98 ft | · | 80°F | 249 ft | Raritan |
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 September 12, 2026, New Jersey rivers are running at 110% of normal across 96 USGS streamgauges, and the Delaware River At Trenton Nj is reporting the highest discharge at 5,490 cfs. The full sortable gauge table is below.
Which New Jersey river is running highest right now?
As of September 12, 2026, the highest discharge in New Jersey is 5,490 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
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