Ramapo River at Pompton Lakes NJ
USGS Site No: 01388000 • Ramapo River • Passaic County, NJ
Ramapo River at Pompton Lakes NJ on the Ramapo River is currently at 122 cfs (Normal — 54th percentile for this date) . Gage height: 7.30 ft.
Reading from
Historical Percentile Comparison
Today's discharge compared to the long-term record for October 28 at this station. Percentile rank shows what fraction of historical years had lower flow on this date.
| Percentile | Label | CFS Threshold | Today's Flow |
|---|---|---|---|
| 10th | Very Low threshold | 28 | |
| 25th | Low threshold | 49 | |
| 50th (Median) | Normal (median) | 91 | |
| 75th | High threshold | 269 | Today: 122 cfs |
| 95th | Very High threshold | 1,080 |
30-Day Hydrograph
Recent discharge plotted against the historical 10th–95th percentile envelope for the same calendar days. Source: USGS daily values + long-term statistics.
30-Day Flow History
| Date | Discharge (CFS) | Gage Ht (ft) |
|---|---|---|
| May 29, 2026 | 134 | — |
| May 28, 2026 | 166 | — |
| May 27, 2026 | 210 | — |
| May 26, 2026 | 294 | — |
| May 25, 2026 | 383 | — |
| May 24, 2026 | 320 | — |
| May 23, 2026 | 98 | — |
| May 22, 2026 | 91 | — |
| May 21, 2026 | 101 | — |
| May 20, 2026 | 90 | — |
| May 19, 2026 | 93 | — |
| May 18, 2026 | 98 | — |
| May 17, 2026 | 105 | — |
| May 16, 2026 | 112 | — |
| May 15, 2026 | 120 | — |
| Apr 21, 2026 | 189 | — |
| Apr 20, 2026 | 201 | — |
| Apr 19, 2026 | 206 | — |
| Apr 18, 2026 | 219 | — |
| Apr 17, 2026 | 223 | — |
| Apr 16, 2026 | 220 | — |
| Apr 15, 2026 | 223 | — |
| Apr 14, 2026 | 220 | — |
| Apr 13, 2026 | 217 | — |
| Apr 12, 2026 | 227 | — |
| Apr 11, 2026 | 242 | — |
| Apr 10, 2026 | 248 | — |
| Apr 9, 2026 | 261 | — |
| Apr 8, 2026 | 281 | — |
| Apr 7, 2026 | 313 | — |
Station Information
- USGS Site No
- 01388000
- State
- NJ
- County
- Passaic County
- Coordinates
- 40.9919, -74.2800
- Drainage Area
- 160 mi²
- Datum (ft)
- 170.6
- HUC Code
- 020301030205
Flood Stage Thresholds
- Action Stage
- 10.0 ft
- Flood Stage
- 11.5 ft
- Moderate Flood
- 13.5 ft
- Major Flood
- 14.5 ft
Currently 4.20 ft below flood stage.
Recent Extremes
- Max discharge
-
1,680 cfsMay 10, 2025
- Min discharge
-
19 cfsOct 2, 2025
- Days at flood stage
- 0
Computed from the local daily-values archive.
Nearby Gauges
-
Pequannock River at Riverdale NJNormal1.0 mi · 33 cfs
-
Pompton River at Pompton Plains NJNormal1.5 mi · 212 cfs
-
Ramapo River at West Oakland Avenue at Oakland NJNormal2.9 mi · 103 cfs
-
Wanaque River at Wanaque NJVery Low3.7 mi · 13 cfs
-
West Brook Near Wanaque NJNormal5.9 mi · 9 cfs