USGS Streamgage 13342450
Lapwai Creek near Lapwai, ID
Lapwai Creek near Lapwai, ID is USGS streamgage 13342450 in Idaho, monitoring river discharge in hydrologic subbasin 17060306. It drains a watershed of about 264 square miles. Discharge records at this site go back to 1974. Typical flow runs near 10.5 cfs in July and 166.6 cfs in April, with the higher of the two arriving in April.
Gauge details
- State
- Idaho
- Drainage area
- 264 sq mi
- Subbasin (HUC-8)
- 17060306
- Coordinates
- 46.42639, -116.80611
- USGS site number
- 13342450
- Records begin
- 1974-10-01 (52 years)
Typical flow by month
Long-term daily discharge percentiles from the USGS record (up to 52 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 | 17.2 | 36.1 | 181.9 | |
| February | 24.9 | 69 | 258.7 | |
| March | 47.8 | 156 | 452.3 | |
| April | 54.4 | 166.6 | 511.9 | |
| May | 25.5 | 80.4 | 319.6 | |
| June | 11.9 | 32.1 | 127 | |
| July | 3.5 | 10.5 | 26.8 | |
| August | 2 | 7 | 14.1 | |
| September | 3.1 | 8.4 | 16.4 | |
| October | 6 | 13.2 | 24.5 | |
| November | 10.8 | 18.8 | 39.7 | |
| December | 13.6 | 27.1 | 88.4 |
All values in cubic feet per second (cfs).