USGS Streamgage 14222500
East Fork Lewis River near Heisson, WA
East Fork Lewis River near Heisson, WA is USGS streamgage 14222500 in Washington, monitoring river discharge in hydrologic subbasin 17080002. It drains a watershed of about 125 square miles. Discharge records at this site go back to 1929. Typical flow runs near 124.9 cfs in July and 796 cfs in April, with the higher of the two arriving in April.
Gauge details
- State
- Washington
- Drainage area
- 125 sq mi
- Subbasin (HUC-8)
- 17080002
- Coordinates
- 45.83678, -122.46621
- USGS site number
- 14222500
- Records begin
- 1929-10-01 (97 years)
Typical flow by month
Long-term daily discharge percentiles from the USGS record (up to 97 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 | 391 | 1,015.6 | 3,048.7 | |
| February | 396.7 | 897.7 | 2,573.8 | |
| March | 426.1 | 917.5 | 2,087.7 | |
| April | 419.6 | 796 | 1,595.7 | |
| May | 240.7 | 508.5 | 1,043.6 | |
| June | 132.8 | 272.3 | 673.1 | |
| July | 70.2 | 124.9 | 215.2 | |
| August | 46.9 | 67.9 | 114.1 | |
| September | 42.5 | 61.3 | 216.1 | |
| October | 51.5 | 161.8 | 830.6 | |
| November | 191.7 | 755.4 | 2,402.3 | |
| December | 382.8 | 1,034.1 | 2,978.1 |
All values in cubic feet per second (cfs).