Natchaug River at Willimantic, CT
USGS Site No: 01122000 • Natchaug River • Southeastern Connecticut Planning Region, CT
Natchaug River at Willimantic, CT on the Natchaug River is currently at 303 cfs (High — 75th percentile for this date) . Gage height: 2.85 ft.
Reading from
Historical Percentile Comparison
Today's discharge compared to the long-term record for June 11 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 | 60 | |
| 25th | Low threshold | 96 | |
| 50th (Median) | Normal (median) | 136 | |
| 75th | High threshold | 294 | |
| 95th | Very High threshold | 1,680 | Today: 303 cfs |
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 | 314 | 2.89 |
| May 27, 2026 | 380 | 3.13 |
| May 26, 2026 | 453 | 3.38 |
| May 25, 2026 | 348 | 2.99 |
| May 24, 2026 | 205 | 2.45 |
| May 23, 2026 | 179 | 2.33 |
| May 22, 2026 | 178 | 2.32 |
| May 21, 2026 | 180 | 2.33 |
| May 20, 2026 | 212 | 2.48 |
| May 19, 2026 | 259 | 2.67 |
| May 18, 2026 | 444 | 3.35 |
| May 17, 2026 | 612 | 3.95 |
| May 16, 2026 | 632 | 4.02 |
| May 15, 2026 | 512 | 3.60 |
| Apr 21, 2026 | — | 3.38 |
| Apr 20, 2026 | 389 | 3.16 |
| Apr 19, 2026 | 331 | 2.95 |
| Apr 18, 2026 | 324 | 2.93 |
| Apr 17, 2026 | 320 | 2.91 |
| Apr 16, 2026 | 322 | 2.92 |
| Apr 15, 2026 | 305 | 2.86 |
| Apr 14, 2026 | 306 | 2.86 |
| Apr 13, 2026 | 308 | 2.87 |
| Apr 12, 2026 | 310 | 2.88 |
| Apr 11, 2026 | 342 | 2.99 |
| Apr 10, 2026 | 377 | 3.12 |
| Apr 9, 2026 | 379 | 3.13 |
| Apr 8, 2026 | 448 | 3.37 |
| Apr 7, 2026 | 530 | 3.65 |
| Apr 6, 2026 | 513 | 3.59 |
Station Information
- USGS Site No
- 01122000
- State
- CT
- Coordinates
- 41.7201, -72.1956
- Drainage Area
- 174 mi²
- Datum (ft)
- 149.3
- HUC Code
- 011000020206
Recent Extremes
- Max discharge
-
1,920 cfsMar 18, 2026
- Min discharge
-
21 cfsSep 22, 2025
Computed from the local daily-values archive.
Nearby Gauges
-
Shetucket River Near Willimantic, CTNormal1.5 mi · 548 cfs
-
Willimantic River Near Coventry, CTNormal4.2 mi · 120 cfs
-
Natchaug River at Marcy Road. Near Chaplin, CTNormal8.1 mi · 53 cfs
-
Little River Near Hanover, CTNormal8.1 mi · 32 cfs
-
Fenton River at Mansfield, CTNormal8.2 mi · 21 cfs