St. Croix River at Vanceboro, Maine
USGS Site No: 01018500 • St. Croix River • Washington County, ME
St. Croix River at Vanceboro, Maine on the St. Croix River is currently at 362 cfs (Normal — 44th percentile for this date) . Gage height: 4.24 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 | 198 | |
| 25th | Low threshold | 259 | |
| 50th (Median) | Normal (median) | 394 | Today: 362 cfs |
| 75th | High threshold | 642 | |
| 95th | Very High threshold | 1,240 |
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 | 251 | — |
| May 27, 2026 | 251 | — |
| May 26, 2026 | 250 | — |
| May 25, 2026 | 312 | — |
| May 24, 2026 | 375 | — |
| May 23, 2026 | 375 | — |
| May 22, 2026 | 312 | — |
| May 21, 2026 | 270 | — |
| May 20, 2026 | 269 | — |
| May 19, 2026 | 268 | — |
| May 18, 2026 | 269 | — |
| May 17, 2026 | 302 | — |
| May 16, 2026 | 373 | — |
| May 15, 2026 | 321 | — |
| Apr 21, 2026 | 220 | — |
| Apr 20, 2026 | 234 | — |
| Apr 19, 2026 | 244 | — |
| Apr 18, 2026 | 241 | — |
| Apr 17, 2026 | 240 | — |
| Apr 16, 2026 | 251 | — |
| Apr 15, 2026 | 268 | — |
| Apr 14, 2026 | 267 | — |
| Apr 13, 2026 | 264 | — |
| Apr 12, 2026 | 263 | — |
| Apr 11, 2026 | 263 | — |
| Apr 10, 2026 | 260 | — |
| Apr 9, 2026 | 259 | — |
| Apr 8, 2026 | 258 | — |
| Apr 7, 2026 | 256 | — |
| Apr 6, 2026 | 255 | — |
Station Information
- USGS Site No
- 01018500
- State
- ME
- County
- Washington County
- Coordinates
- 45.5683, -67.4283
- Drainage Area
- 410 mi²
- Datum (ft)
- 367.1
- HUC Code
- 01050001
Flood Stage Thresholds
- Action Stage
- 9.5 ft
- Flood Stage
- 10.0 ft
- Moderate Flood
- 12.0 ft
Currently 5.76 ft below flood stage.
Recent Extremes
- Max discharge
-
2,930 cfsApr 29, 2025
- Min discharge
-
213 cfsMar 13, 2026
- Days at flood stage
- 0
Computed from the local daily-values archive.
Nearby Gauges
-
St. Croix River at Baring, MaineNormal30.3 mi · 1,250 cfs
-
Grand Lake Stream at Grand Lake Stream, MaineHigh32.0 mi · 317 cfs
-
Wytopitlock Stream Near Wytopitlock MaineNormal36.6 mi · 50 cfs
-
Pearce Brook at Route 1 at Houlton, MaineNormal42.7 mi · 8 cfs
-
Mattawamkeag River Near Mattawamkeag, MaineNormal42.7 mi · 1,790 cfs