USGS Streamgage 12391950
Clark Fork River below Cabinet Gorge Dam, ID
Clark Fork River below Cabinet Gorge Dam, ID is USGS streamgage 12391950 in Idaho, monitoring river discharge in hydrologic subbasin 17010213. It drains a watershed of about 22,067 square miles. Discharge records at this site go back to 1995. Typical flow runs near 20,880.6 cfs in July and 24,090 cfs in April, with the higher of the two arriving in April.
Gauge details
- State
- Idaho
- Drainage area
- 22,067 sq mi
- Gauge elevation
- 2,145 ft
- Subbasin (HUC-8)
- 17010213
- Coordinates
- 48.08806, -116.07278
- USGS site number
- 12391950
- Records begin
- 1995-10-01 (31 years)
Typical flow by month
Long-term daily discharge percentiles from the USGS record (up to 31 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 | 7,321.3 | 13,596.8 | 20,012.9 | |
| February | 6,584.6 | 12,993.1 | 22,385.7 | |
| March | 6,740.3 | 14,274.2 | 27,980.6 | |
| April | 9,991 | 24,090 | 40,156.7 | |
| May | 25,445.2 | 43,374.2 | 76,009.7 | |
| June | 25,810 | 48,073.3 | 86,750 | |
| July | 11,362.3 | 20,880.6 | 37,332.3 | |
| August | 5,939.4 | 10,030.3 | 17,712.9 | |
| September | 5,639.3 | 8,324.3 | 14,070 | |
| October | 5,957.1 | 9,359.7 | 14,816.1 | |
| November | 6,573 | 11,799.7 | 19,780 | |
| December | 7,787.4 | 13,816.1 | 20,935.5 |
All values in cubic feet per second (cfs).