South Branch Raritan River Near High Bridge NJ
USGS Site No: 01396500 • South Branch Raritan River • Hunterdon County, NJ
South Branch Raritan River Near High Bridge NJ on the South Branch Raritan River is currently at 46 cfs (Normal — 37th percentile for this date) . Gage height: 5.91 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 | 30 | |
| 25th | Low threshold | 39 | |
| 50th (Median) | Normal (median) | 54 | Today: 46 cfs |
| 75th | High threshold | 118 | |
| 95th | Very High threshold | 413 |
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 | 47 | — |
| May 28, 2026 | 53 | — |
| May 27, 2026 | 62 | — |
| May 26, 2026 | 84 | — |
| May 25, 2026 | 123 | — |
| May 24, 2026 | 145 | — |
| May 23, 2026 | 46 | — |
| May 22, 2026 | 47 | — |
| May 21, 2026 | 45 | — |
| May 20, 2026 | 43 | — |
| May 19, 2026 | 45 | — |
| May 18, 2026 | 48 | — |
| May 17, 2026 | 50 | — |
| May 16, 2026 | 52 | — |
| May 15, 2026 | 56 | — |
| Apr 21, 2026 | 59 | — |
| Apr 20, 2026 | 62 | — |
| Apr 19, 2026 | 63 | — |
| Apr 18, 2026 | 64 | — |
| Apr 17, 2026 | 67 | — |
| Apr 16, 2026 | 72 | — |
| Apr 15, 2026 | 74 | — |
| Apr 14, 2026 | 70 | — |
| Apr 13, 2026 | 71 | — |
| Apr 12, 2026 | 73 | — |
| Apr 11, 2026 | 75 | — |
| Apr 10, 2026 | 77 | — |
| Apr 9, 2026 | 79 | — |
| Apr 8, 2026 | 84 | — |
| Apr 7, 2026 | 95 | — |
Station Information
- USGS Site No
- 01396500
- State
- NJ
- County
- Hunterdon County
- Coordinates
- 40.6778, -74.8792
- Drainage Area
- 65 mi²
- Datum (ft)
- 282.1
- HUC Code
- 02030105
Flood Stage Thresholds
- Action Stage
- 9.0 ft
- Flood Stage
- 10.0 ft
- Moderate Flood
- 12.0 ft
- Major Flood
- 14.0 ft
Currently 4.09 ft below flood stage.
Recent Extremes
- Max discharge
-
938 cfsMay 31, 2025
- Min discharge
-
23 cfsOct 7, 2025
- Days at flood stage
- 0
Computed from the local daily-values archive.
Nearby Gauges
-
Spruce Run at Main Street at Glen Gardner NJNormal3.2 mi · 7 cfs
-
South Branch Raritan River at Four Bridges NJLow11.5 mi · 16 cfs
-
Passaic River Near Millington NJNormal18.4 mi · 27 cfs
-
Whippany River Near Morristown NJNormal21.4 mi · 9 cfs
-
Rockaway River at Warren Street at Dover NJNormal22.0 mi · 56 cfs