USGS Streamgage 12334550
Clark Fork at Turah Bridge near Bonner, MT
Clark Fork at Turah Bridge near Bonner, MT is USGS streamgage 12334550 in Montana, monitoring river discharge in hydrologic subbasin 17010202. It drains a watershed of about 3,657 square miles. Discharge records at this site go back to 1984. Typical flow runs near 1,102.5 cfs in July and 1,435.3 cfs in April, with the higher of the two arriving in April.
Gauge details
- State
- Montana
- Drainage area
- 3,657 sq mi
- Gauge elevation
- 3,321 ft
- Subbasin (HUC-8)
- 17010202
- Coordinates
- 46.82591, -113.81403
- USGS site number
- 12334550
- Records begin
- 1984-10-01 (42 years)
Typical flow by month
Long-term daily discharge percentiles from the USGS record (up to 41 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 | 478 | 724.1 | 977.8 | |
| February | 527.6 | 751.8 | 1,140.4 | |
| March | 680.5 | 955.5 | 1,611.9 | |
| April | 874.1 | 1,435.3 | 2,630.7 | |
| May | 1,306.2 | 2,570 | 5,639.4 | |
| June | 1,209.8 | 2,831.3 | 5,649.7 | |
| July | 636.2 | 1,102.5 | 2,638.7 | |
| August | 358.3 | 570.9 | 1,103.1 | |
| September | 402.1 | 638.3 | 1,047.5 | |
| October | 626.2 | 850.2 | 1,187.1 | |
| November | 651.3 | 837.8 | 1,196.3 | |
| December | 504.2 | 749.2 | 995.3 |
All values in cubic feet per second (cfs).