Passaic River Near Chatham NJ
USGS Site No: 01379500 • Passaic River • Morris County, NJ
Passaic River Near Chatham NJ on the Passaic River is currently at 68 cfs (Normal — 54th percentile for this date) . Gage height: 3.63 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 | 14 | |
| 25th | Low threshold | 26 | |
| 50th (Median) | Normal (median) | 55 | |
| 75th | High threshold | 144 | Today: 68 cfs |
| 95th | Very High threshold | 550 |
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 | 77 | — |
| May 28, 2026 | 107 | — |
| May 27, 2026 | 154 | — |
| May 26, 2026 | 188 | — |
| May 25, 2026 | 185 | — |
| May 24, 2026 | 136 | — |
| May 23, 2026 | 44 | — |
| May 22, 2026 | 42 | — |
| May 21, 2026 | 45 | — |
| May 20, 2026 | 36 | — |
| May 19, 2026 | 36 | — |
| May 18, 2026 | 37 | — |
| May 17, 2026 | 39 | — |
| May 16, 2026 | 42 | — |
| May 15, 2026 | 45 | — |
| Apr 21, 2026 | 51 | — |
| Apr 20, 2026 | 54 | — |
| Apr 19, 2026 | 58 | — |
| Apr 18, 2026 | 62 | — |
| Apr 17, 2026 | 65 | — |
| Apr 16, 2026 | 67 | — |
| Apr 15, 2026 | 66 | — |
| Apr 14, 2026 | 67 | — |
| Apr 13, 2026 | 69 | — |
| Apr 12, 2026 | 72 | — |
| Apr 11, 2026 | 77 | — |
| Apr 10, 2026 | 84 | — |
| Apr 9, 2026 | 90 | — |
| Apr 8, 2026 | 102 | — |
| Apr 7, 2026 | 113 | — |
Station Information
- USGS Site No
- 01379500
- State
- NJ
- County
- Morris County
- Coordinates
- 40.7261, -74.3897
- Drainage Area
- 100 mi²
- Datum (ft)
- 193.5
- HUC Code
- 02030103
Flood Stage Thresholds
- Action Stage
- 5.5 ft
- Flood Stage
- 6.0 ft
- Moderate Flood
- 8.0 ft
- Major Flood
- 10.0 ft
Currently 2.37 ft below flood stage.
Recent Extremes
- Max discharge
-
987 cfsMar 8, 2026
- Min discharge
-
17 cfsOct 7, 2025
- Days at flood stage
- 0
Computed from the local daily-values archive.
Nearby Gauges
-
Canoe Brook Near Summit NJNormal2.3 mi · 2 cfs
-
Rahway River Near Springfield NJNormal4.9 mi · 12 cfs
-
Whippany River at Morristown NJNormal6.6 mi · 26 cfs
-
Passaic River Near Millington NJNormal8.0 mi · 27 cfs
-
Whippany River Near Pine Brook NJNormal8.5 mi · 48 cfs