USGS Streamgage 06191000
Gardner River near Mammoth, YNP
Gardner River near Mammoth, YNP is USGS streamgage 06191000 in Montana, monitoring river discharge in hydrologic subbasin 10070001. It drains a watershed of about 199 square miles. Discharge records at this site go back to 1938. Typical flow runs near 260 cfs in July and 126.3 cfs in April, with the higher of the two arriving in July.
Gauge details
- State
- Montana
- Drainage area
- 199 sq mi
- Gauge elevation
- 5,632 ft
- Subbasin (HUC-8)
- 10070001
- Coordinates
- 44.99234, -110.69097
- USGS site number
- 06191000
- Records begin
- 1938-10-01 (88 years)
Typical flow by month
Long-term daily discharge percentiles from the USGS record (up to 88 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 | 80.7 | 95.3 | 112.7 | |
| February | 79.3 | 91.5 | 106 | |
| March | 80.9 | 92.1 | 108.8 | |
| April | 90.2 | 126.3 | 215.7 | |
| May | 245.3 | 447.4 | 856 | |
| June | 312.6 | 630 | 1,135.2 | |
| July | 149.4 | 260 | 456.3 | |
| August | 111.5 | 150 | 205.5 | |
| September | 102.1 | 129.6 | 165.7 | |
| October | 98.8 | 121.9 | 150.5 | |
| November | 89.8 | 109.5 | 134 | |
| December | 83.4 | 100.4 | 118.7 |
All values in cubic feet per second (cfs).