USGS Streamgage 06036805
Firehole River at Old Faithful, YNP
Firehole River at Old Faithful, YNP is USGS streamgage 06036805 in Wyoming, monitoring river discharge in hydrologic subbasin 10020007. It drains a watershed of about 40 square miles. Discharge records at this site go back to 2006. Typical flow runs near 57 cfs in July and 48.5 cfs in April, with the higher of the two arriving in July.
Gauge details
- State
- Wyoming
- Drainage area
- 40 sq mi
- Gauge elevation
- 7,343 ft
- Subbasin (HUC-8)
- 10020007
- Coordinates
- 44.45933, -110.82227
- USGS site number
- 06036805
- Records begin
- 2006-10-01 (20 years)
Typical flow by month
Long-term daily discharge percentiles from the USGS record (up to 20 years of data), averaged within each month. These describe the historical normal range — they are not a forecast and not today's reading.
| Month | Low p10 | Typical p50 | High p90 | Range |
|---|---|---|---|---|
| January | 35.6 | 41.6 | 49.6 | |
| February | 35.5 | 41.1 | 47.5 | |
| March | 34.9 | 40.4 | 48.9 | |
| April | 37.1 | 48.5 | 69.7 | |
| May | 65 | 107.1 | 196.5 | |
| June | 56.2 | 142.5 | 242.7 | |
| July | 38.2 | 57 | 104.7 | |
| August | 35 | 48.4 | 75.3 | |
| September | 35.7 | 48.1 | 69.5 | |
| October | 38.3 | 49.6 | 67.8 | |
| November | 36.6 | 47 | 60.8 | |
| December | 35.7 | 43.9 | 53.3 |
All values in cubic feet per second (cfs).
Other gauges in this subbasin
- Firehole River near West Yellowstone, MT
- Tantalus Creek at Norris Junction, YNP
- Gibbon River at Madison Jct, YNP
- Madison River near West Yellowstone, MT
- Madison River below Hebgen Lake near Grayling, MT
- Madison River at Kirby Ranch near Cameron, MT
- Madison River near Cameron, MT
- Madison River at Ennis, MT