Firehole River at Old Faithful, Ynp
USGS Site No: 06036805 • Firehole River • Teton County, WY
Firehole River at Old Faithful, Ynp on the Firehole River is currently at 126 cfs (Normal — 40th percentile for this date) . Gage height: 2.99 ft. This station is at or above flood stage.
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 | 59 | |
| 25th | Low threshold | 72 | |
| 50th (Median) | Normal (median) | 162 | Today: 126 cfs |
| 75th | High threshold | 199 | |
| 95th | Very High threshold | 257 |
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 | 139 | — |
| May 27, 2026 | 116 | — |
| May 26, 2026 | 114 | — |
| May 25, 2026 | 107 | — |
| May 24, 2026 | 97 | — |
| May 23, 2026 | 85 | — |
| May 22, 2026 | 82 | — |
| May 21, 2026 | 95 | — |
| May 20, 2026 | 85 | — |
| May 19, 2026 | 82 | — |
| May 18, 2026 | 89 | — |
| May 17, 2026 | 106 | — |
| May 16, 2026 | 118 | — |
| May 15, 2026 | 125 | — |
| Apr 20, 2026 | 54 | — |
| Apr 19, 2026 | 52 | — |
| Apr 18, 2026 | 50 | — |
| Apr 17, 2026 | 51 | — |
| Apr 16, 2026 | 54 | — |
| Apr 15, 2026 | 56 | — |
| Apr 14, 2026 | 56 | — |
| Apr 13, 2026 | 62 | — |
| Apr 12, 2026 | 69 | — |
| Apr 11, 2026 | 69 | — |
| Apr 10, 2026 | 64 | — |
| Apr 9, 2026 | 61 | — |
| Apr 8, 2026 | 60 | — |
| Apr 7, 2026 | 56 | — |
| Apr 6, 2026 | 51 | — |
| Apr 5, 2026 | 50 | — |
Station Information
- USGS Site No
- 06036805
- State
- WY
- County
- Teton County
- Coordinates
- 44.4593, -110.8223
- Drainage Area
- 40 mi²
- Datum (ft)
- 7,352.0
- HUC Code
- 10020007
Flood Stage Thresholds
- Action Stage
- 4.0 ft
Recent Extremes
- Max discharge
-
139 cfsMay 28, 2026
- Min discharge
-
30 cfsJan 24, 2026
Computed from the local daily-values archive.
Nearby Gauges
-
Firehole River Near West Yellowstone MountNormal11.3 mi · 329 cfs
-
Gibbon River at Madison Jct, YnpVery Low12.7 mi · 107 cfs
-
Madison River Near West Yellowstone, MountLow18.2 mi · 479 cfs
-
Tantalus Creek at Norris Junction, YnpLow19.6 mi · 3 cfs
-
Yellowstone River at Yellowstone Lake Outlet YnpLow23.0 mi · 2,290 cfs