USGS Streamgage 12452500
Chelan River at Chelan, WA
Chelan River at Chelan, WA is USGS streamgage 12452500 in Washington, monitoring river discharge in hydrologic subbasin 17020009. It drains a watershed of about 924 square miles. Discharge records at this site go back to 1903. Typical flow runs near 2,939.4 cfs in July and 1,274 cfs in April, with the higher of the two arriving in July.
Gauge details
- State
- Washington
- Drainage area
- 924 sq mi
- Gauge elevation
- 1,123 ft
- Subbasin (HUC-8)
- 17020009
- Coordinates
- 47.83529, -120.00964
- USGS site number
- 12452500
- Records begin
- 1903-11-01 (123 years)
Typical flow by month
Long-term daily discharge percentiles from the USGS record (up to 123 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 | 510 | 2,050 | 2,374.8 | |
| February | 429.7 | 1,886.9 | 2,398.6 | |
| March | 333.5 | 1,522.3 | 2,266.1 | |
| April | 101.4 | 1,274 | 2,499 | |
| May | 115.5 | 1,974.5 | 5,387.4 | |
| June | 597.1 | 3,300.7 | 7,747.7 | |
| July | 1,479.4 | 2,939.4 | 5,989.7 | |
| August | 732.8 | 1,691.6 | 2,688.1 | |
| September | 626.5 | 1,582.7 | 2,214.3 | |
| October | 687.3 | 2,049 | 2,437.4 | |
| November | 579.3 | 2,082.3 | 2,447 | |
| December | 569.2 | 2,078.1 | 2,397.7 |
All values in cubic feet per second (cfs).