Pequannock River at Riverdale NJ
USGS Site No: 01382800 • Pequannock River • Morris County, NJ
Pequannock River at Riverdale NJ on the Pequannock River is currently at 33 cfs (Normal — 50th percentile for this date) . Gage height: 2.18 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 | 13 | |
| 25th | Low threshold | 16 | |
| 50th (Median) | Normal (median) | 32 | |
| 75th | High threshold | 141 | Today: 33 cfs |
| 95th | Very High threshold | 949 |
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 | 39 | — |
| May 28, 2026 | 48 | — |
| May 27, 2026 | 69 | — |
| May 26, 2026 | 105 | — |
| May 25, 2026 | 148 | — |
| May 24, 2026 | 134 | — |
| May 23, 2026 | 32 | — |
| May 22, 2026 | 20 | — |
| May 21, 2026 | 24 | — |
| May 20, 2026 | 25 | — |
| May 19, 2026 | 24 | — |
| May 18, 2026 | 24 | — |
| May 17, 2026 | 25 | — |
| May 16, 2026 | 25 | — |
| May 15, 2026 | 19 | — |
| Apr 21, 2026 | 25 | — |
| Apr 20, 2026 | 28 | — |
| Apr 19, 2026 | 29 | — |
| Apr 18, 2026 | 33 | — |
| Apr 17, 2026 | 32 | — |
| Apr 16, 2026 | 32 | — |
| Apr 15, 2026 | 32 | — |
| Apr 14, 2026 | 30 | — |
| Apr 13, 2026 | 29 | — |
| Apr 12, 2026 | 29 | — |
| Apr 11, 2026 | 30 | — |
| Apr 10, 2026 | 32 | — |
| Apr 9, 2026 | 38 | — |
| Apr 8, 2026 | 48 | — |
| Apr 7, 2026 | 56 | — |
Station Information
- USGS Site No
- 01382800
- State
- NJ
- County
- Morris County
- Coordinates
- 40.9986, -74.2981
- Drainage Area
- 84 mi²
- Datum (ft)
- 187.9
- HUC Code
- 02030103
Flood Stage Thresholds
- Action Stage
- 7.0 ft
- Flood Stage
- 8.0 ft
- Moderate Flood
- 10.0 ft
- Major Flood
- 11.0 ft
Currently 5.82 ft below flood stage.
Recent Extremes
- Max discharge
-
1,070 cfsMay 31, 2025
- Min discharge
-
11 cfsOct 4, 2025
- Days at flood stage
- 0
Computed from the local daily-values archive.
Nearby Gauges
-
Ramapo River at Pompton Lakes NJNormal1.0 mi · 122 cfs
-
Pompton River at Pompton Plains NJNormal2.2 mi · 212 cfs
-
Wanaque River at Wanaque NJVery Low3.2 mi · 13 cfs
-
Ramapo River at West Oakland Avenue at Oakland NJNormal3.2 mi · 103 cfs
-
West Brook Near Wanaque NJNormal5.2 mi · 9 cfs