USGS Streamgage 12365700
Stillwater River at Lawrence Park, at Kalispell
Stillwater River at Lawrence Park, at Kalispell is USGS streamgage 12365700 in Montana, monitoring river discharge in hydrologic subbasin 17010210. It drains a watershed of about 596 square miles. Discharge records at this site go back to 2007. Typical flow runs near 250.1 cfs in July and 500.9 cfs in April, with the higher of the two arriving in April.
Gauge details
- State
- Montana
- Drainage area
- 596 sq mi
- Gauge elevation
- 2,952 ft
- Subbasin (HUC-8)
- 17010210
- Coordinates
- 48.21725, -114.31374
- USGS site number
- 12365700
- Records begin
- 2007-03-01 (19 years)
Typical flow by month
Long-term daily discharge percentiles from the USGS record (up to 19 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 | 50.5 | 89.9 | 140.2 | |
| February | 51.5 | 92.6 | 159.4 | |
| March | 76.2 | 133.5 | 540.2 | |
| April | 172.2 | 500.9 | 1,276 | |
| May | 475 | 934.3 | 2,131 | |
| June | 306.7 | 681.9 | 1,709 | |
| July | 109.6 | 250.1 | 762.8 | |
| August | 72.6 | 128 | 246.6 | |
| September | 63.2 | 94.5 | 154.9 | |
| October | 59.2 | 93.7 | 159.1 | |
| November | 74.9 | 108.3 | 191.7 | |
| December | 55.6 | 95 | 184.5 |
All values in cubic feet per second (cfs).