Rockaway River at Main Street at Boonton NJ
USGS Site No: 01380450 • Rockaway River • Morris County, NJ
Rockaway River at Main Street at Boonton NJ on the Rockaway River is currently at 102 cfs (Normal — 50th percentile for this date) . Gage height: 0.99 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 | 35 | |
| 25th | Low threshold | 60 | |
| 50th (Median) | Normal (median) | 101 | |
| 75th | High threshold | 234 | Today: 102 cfs |
| 95th | Very High threshold | 931 |
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 28, 2026 | 126 | — |
| May 27, 2026 | 169 | — |
| May 26, 2026 | 248 | — |
| May 25, 2026 | 362 | — |
| May 24, 2026 | 348 | — |
| May 23, 2026 | 74 | — |
| May 22, 2026 | 62 | — |
| May 21, 2026 | 57 | — |
| May 20, 2026 | 58 | — |
| May 19, 2026 | 64 | — |
| May 18, 2026 | 73 | — |
| May 17, 2026 | 81 | — |
| May 16, 2026 | 85 | — |
| May 15, 2026 | 86 | — |
| Apr 21, 2026 | 104 | — |
| Apr 20, 2026 | 110 | — |
| Apr 19, 2026 | 114 | — |
| Apr 18, 2026 | 126 | — |
| Apr 17, 2026 | 123 | — |
| Apr 16, 2026 | 131 | — |
| Apr 15, 2026 | 141 | — |
| Apr 14, 2026 | 128 | — |
| Apr 13, 2026 | 128 | — |
| Apr 12, 2026 | 132 | — |
| Apr 11, 2026 | 143 | — |
| Apr 10, 2026 | 153 | — |
| Apr 9, 2026 | 158 | — |
| Apr 8, 2026 | 173 | — |
| Apr 7, 2026 | 196 | — |
| Apr 6, 2026 | 224 | — |
Station Information
- USGS Site No
- 01380450
- State
- NJ
- County
- Morris County
- Coordinates
- 40.9075, -74.4192
- Drainage Area
- 116 mi²
- Datum (ft)
- 479.0
- HUC Code
- 02030103
Flood Stage Thresholds
- Action Stage
- 3.5 ft
- Flood Stage
- 4.5 ft
- Moderate Flood
- 6.0 ft
- Major Flood
- 7.0 ft
Currently 3.51 ft below flood stage.
Recent Extremes
- Max discharge
-
1,170 cfsMay 15, 2025
- Min discharge
-
19 cfsSep 22, 2025
- Days at flood stage
- 0
Computed from the local daily-values archive.
Nearby Gauges
-
Rockaway River Below Reservoir at Boonton NJNormal1.5 mi · 42 cfs
-
Whippany River Near Pine Brook NJNormal5.7 mi · 48 cfs
-
Passaic River at Pine Brook NJNormal6.0 mi · 290 cfs
-
Whippany River at Morristown NJNormal7.2 mi · 26 cfs
-
Green Pond Brook at Picatinny Arsenal NJNormal7.3 mi · 6 cfs