USGS Streamgage 12353000
Clark Fork below Missoula, MT
Clark Fork below Missoula, MT is USGS streamgage 12353000 in Montana, monitoring river discharge in hydrologic subbasin 17010204. It drains a watershed of about 9,017 square miles. Discharge records at this site go back to 1929. Typical flow runs near 5,080 cfs in July and 5,651 cfs in April, with the higher of the two arriving in April.
Gauge details
- State
- Montana
- Drainage area
- 9,017 sq mi
- Gauge elevation
- 3,095 ft
- Subbasin (HUC-8)
- 17010204
- Coordinates
- 46.86863, -114.12775
- USGS site number
- 12353000
- Records begin
- 1929-10-01 (97 years)
Typical flow by month
Long-term daily discharge percentiles from the USGS record (up to 96 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 | 1,383.2 | 2,059.4 | 3,311.9 | |
| February | 1,499 | 2,232.8 | 3,696.2 | |
| March | 1,971.6 | 2,758.4 | 4,984.8 | |
| April | 2,841.3 | 5,651 | 11,586.3 | |
| May | 7,237.1 | 13,446.5 | 25,561.3 | |
| June | 7,049 | 15,170 | 28,116.7 | |
| July | 2,237.1 | 5,080 | 9,712.3 | |
| August | 1,240.3 | 2,100.3 | 3,466.1 | |
| September | 1,341.3 | 2,119.7 | 3,283.7 | |
| October | 1,748.4 | 2,521.3 | 3,674.2 | |
| November | 1,867 | 2,578.7 | 3,886.7 | |
| December | 1,547.1 | 2,264.8 | 3,492.3 |
All values in cubic feet per second (cfs).