USGS Streamgage 12414900
St Maries River near Santa, ID
St Maries River near Santa, ID is USGS streamgage 12414900 in Idaho, monitoring river discharge in hydrologic subbasin 17010304. It drains a watershed of about 273 square miles. Discharge records at this site go back to 1965. Typical flow runs near 103.6 cfs in July and 733.6 cfs in April, with the higher of the two arriving in April.
Gauge details
- State
- Idaho
- Drainage area
- 273 sq mi
- Gauge elevation
- 2,582 ft
- Subbasin (HUC-8)
- 17010304
- Coordinates
- 47.17611, -116.49333
- USGS site number
- 12414900
- Records begin
- 1965-10-01 (61 years)
Typical flow by month
Long-term daily discharge percentiles from the USGS record (up to 61 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 | 74.8 | 194.1 | 771.5 | |
| February | 119.8 | 290.2 | 1,107.2 | |
| March | 222.4 | 586.5 | 1,397.7 | |
| April | 333.1 | 733.6 | 1,594.3 | |
| May | 254.1 | 583.5 | 1,424.5 | |
| June | 129.7 | 267.3 | 733.7 | |
| July | 62.3 | 103.6 | 186.7 | |
| August | 39.4 | 60 | 94.9 | |
| September | 36.5 | 53.7 | 86.4 | |
| October | 43.1 | 61.2 | 112.4 | |
| November | 49.6 | 96.1 | 271.8 | |
| December | 57.2 | 122.7 | 517.7 |
All values in cubic feet per second (cfs).