Smith River Near Bristol, NH
USGS Site No: 01078000 • Smith River • Merrimack County, NH
Smith River Near Bristol, NH on the Smith River is currently at 108 cfs (Normal — 66th percentile for this date) . Gage height: 2.86 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 | 20 | |
| 25th | Low threshold | 32 | |
| 50th (Median) | Normal (median) | 54 | |
| 75th | High threshold | 140 | Today: 108 cfs |
| 95th | Very High threshold | 616 |
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 | 141 | — |
| May 27, 2026 | 202 | — |
| May 26, 2026 | 342 | — |
| May 25, 2026 | 312 | — |
| May 24, 2026 | 111 | — |
| May 23, 2026 | 103 | — |
| May 22, 2026 | 120 | — |
| May 21, 2026 | 145 | — |
| May 20, 2026 | 179 | — |
| May 19, 2026 | 240 | — |
| May 18, 2026 | 378 | — |
| May 17, 2026 | 686 | — |
| May 16, 2026 | 1,140 | — |
| May 15, 2026 | 1,240 | — |
| Apr 21, 2026 | 318 | — |
| Apr 20, 2026 | 412 | — |
| Apr 19, 2026 | 276 | — |
| Apr 18, 2026 | 316 | — |
| Apr 17, 2026 | 344 | — |
| Apr 16, 2026 | 223 | — |
| Apr 15, 2026 | 231 | — |
| Apr 14, 2026 | 169 | — |
| Apr 13, 2026 | 154 | — |
| Apr 12, 2026 | 155 | — |
| Apr 11, 2026 | 169 | — |
| Apr 10, 2026 | 187 | — |
| Apr 9, 2026 | 219 | — |
| Apr 8, 2026 | 266 | — |
| Apr 7, 2026 | 360 | — |
| Apr 6, 2026 | 461 | — |
Station Information
- USGS Site No
- 01078000
- State
- NH
- County
- Merrimack County
- Coordinates
- 43.5665, -71.7479
- Drainage Area
- 86 mi²
- Datum (ft)
- 449.4
- HUC Code
- 01070001
Flood Stage Thresholds
- Action Stage
- 6.0 ft
- Flood Stage
- 8.0 ft
- Moderate Flood
- 12.0 ft
- Major Flood
- 14.0 ft
Currently 5.14 ft below flood stage.
Recent Extremes
- Max discharge
-
1,240 cfsMay 10, 2025
- Min discharge
-
4 cfsSep 22, 2025
- Days at flood stage
- 0
Computed from the local daily-values archive.
Nearby Gauges
-
Cockermouth River Below Hardy Brook, at Groton, NHNormal10.4 mi · 46 cfs
-
Merrimack River at Franklin Junction, NHHigh11.0 mi · 3,570 cfs
-
Winnipesaukee River at Tilton, NHVery High11.8 mi · 1,630 cfs
-
Pemigewasset River at Plymouth, NHNormal13.7 mi · 914 cfs
-
Baker River Near Rumney, NHNormal16.6 mi · 177 cfs