Willimantic River at Merrow Road. Near Merrow, CT
USGS Site No: 01119382 • Willimantic River • Capitol Planning Region, CT
Willimantic River at Merrow Road. Near Merrow, CT on the Willimantic River is currently at 105 cfs (Normal — 55th percentile for this date) . Gage height: 1.50 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 | 16 | |
| 25th | Low threshold | 35 | |
| 50th (Median) | Normal (median) | 70 | |
| 75th | High threshold | 263 | Today: 105 cfs |
| 95th | Very High threshold | 0 |
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 | 136 | — |
| May 27, 2026 | 169 | — |
| May 26, 2026 | 229 | — |
| May 25, 2026 | 271 | — |
| May 24, 2026 | 160 | — |
| May 23, 2026 | 95 | — |
| May 22, 2026 | 106 | — |
| May 21, 2026 | 118 | — |
| May 20, 2026 | 137 | — |
| May 19, 2026 | 143 | — |
| May 18, 2026 | 159 | — |
| May 17, 2026 | 199 | — |
| May 16, 2026 | 268 | — |
| May 15, 2026 | 443 | — |
| Apr 20, 2026 | 183 | — |
| Apr 19, 2026 | 193 | — |
| Apr 18, 2026 | 218 | — |
| Apr 17, 2026 | 270 | — |
| Apr 16, 2026 | 296 | — |
| Apr 15, 2026 | 170 | — |
| Apr 14, 2026 | 161 | — |
| Apr 13, 2026 | 160 | — |
| Apr 12, 2026 | 163 | — |
| Apr 11, 2026 | 176 | — |
| Apr 10, 2026 | 183 | — |
| Apr 9, 2026 | 192 | — |
| Apr 8, 2026 | 203 | — |
| Apr 7, 2026 | 220 | — |
| Apr 6, 2026 | 244 | — |
| Apr 5, 2026 | 255 | — |
Station Information
- USGS Site No
- 01119382
- State
- CT
- County
- Capitol Planning Region
- Coordinates
- 41.8240, -72.3128
- Drainage Area
- 96 mi²
- Datum (ft)
- 319.0
- HUC Code
- 011000020108
Recent Extremes
- Max discharge
-
1,350 cfsMar 17, 2026
- Min discharge
-
18 cfsSep 22, 2025
Computed from the local daily-values archive.
Nearby Gauges
- Unknown
-
Fenton River at Mansfield, CTNormal3.7 mi · 21 cfs
-
Willimantic River Near Coventry, CTNormal5.6 mi · 120 cfs
-
Mount Hope River Near Warrenville, CTNormal7.5 mi · 26 cfs
-
Natchaug River at Willimantic, CTHigh9.4 mi · 303 cfs