Tuolumne River near Hetch Hetchy CA
USGS Site No: 11276500 • Tuolumne River • Tuolumne County, CA
Tuolumne River near Hetch Hetchy CA on the Tuolumne River is currently at 366 cfs (Normal — 31th percentile for this date) . Gage height: 4.97 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 | 75 | |
| 25th | Low threshold | 112 | |
| 50th (Median) | Normal (median) | 1,190 | Today: 366 cfs |
| 75th | High threshold | 3,330 | |
| 95th | Very High threshold | 6,750 |
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 | 505 | — |
| May 27, 2026 | 766 | — |
| May 26, 2026 | 971 | — |
| May 25, 2026 | 972 | — |
| May 24, 2026 | 945 | — |
| May 23, 2026 | 829 | — |
| May 22, 2026 | 584 | — |
| May 21, 2026 | 291 | — |
| May 20, 2026 | 296 | — |
| May 19, 2026 | 538 | — |
| May 18, 2026 | 949 | — |
| May 17, 2026 | 1,310 | — |
| May 16, 2026 | 1,360 | — |
| May 15, 2026 | 1,240 | — |
| Apr 20, 2026 | 366 | — |
| Apr 19, 2026 | 247 | — |
| Apr 18, 2026 | 244 | — |
| Apr 17, 2026 | 244 | — |
| Apr 16, 2026 | 235 | — |
| Apr 15, 2026 | 231 | — |
| Apr 14, 2026 | 228 | — |
| Apr 13, 2026 | 226 | — |
| Apr 12, 2026 | 227 | — |
| Apr 11, 2026 | 217 | — |
| Apr 10, 2026 | 212 | — |
| Apr 9, 2026 | 207 | — |
| Apr 8, 2026 | 204 | — |
| Apr 7, 2026 | 204 | — |
| Apr 6, 2026 | 244 | — |
| Apr 5, 2026 | 314 | — |
Station Information
- USGS Site No
- 11276500
- State
- CA
- County
- Tuolumne County
- Coordinates
- 37.9374, -119.7982
- Drainage Area
- 457 mi²
- Datum (ft)
- 3,452.2
- HUC Code
- 18040009
Recent Extremes
- Max discharge
-
4,140 cfsMay 10, 2025
- Min discharge
-
40 cfsDec 13, 2025
Computed from the local daily-values archive.
Nearby Gauges
-
Eleanor C near Hetch Hetchy CANormal5.1 mi · 34 cfs
-
Cherry C below Valley Dam near Hetch Hetchy CANormal6.8 mi · 7 cfs
-
Tuolumne River at Grand Cyn Of Tuolumne above Hetch HetchyNormal7.7 mi · 819 cfs
-
Tuolumne River above Early Intake near Mather CANormal9.1 mi · 418 cfs
-
Cherry C near Early Intake CANormal9.4 mi · 52 cfs