USGS Streamgage 12045500
Elwha River at McDonald Br near Port Angeles, WA
Elwha River at McDonald Br near Port Angeles, WA is USGS streamgage 12045500 in Washington, monitoring river discharge in hydrologic subbasin 17110020. It drains a watershed of about 269 square miles. Discharge records at this site go back to 1897. Typical flow runs near 1,326.5 cfs in July and 1,209.7 cfs in April, with the higher of the two arriving in July.
Gauge details
- State
- Washington
- Drainage area
- 269 sq mi
- Gauge elevation
- 226 ft
- Subbasin (HUC-8)
- 17110020
- Coordinates
- 48.05478, -123.58321
- USGS site number
- 12045500
- Records begin
- 1897-10-01 (129 years)
Typical flow by month
Long-term daily discharge percentiles from the USGS record (up to 129 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 | 725.2 | 1,500 | 3,916.8 | |
| February | 677.6 | 1,273.8 | 3,154.5 | |
| March | 661.5 | 1,114.8 | 2,260 | |
| April | 735.4 | 1,209.7 | 2,057.3 | |
| May | 1,142.2 | 1,762.3 | 2,962.3 | |
| June | 1,255 | 2,017.3 | 3,347.7 | |
| July | 741.4 | 1,326.5 | 2,387.1 | |
| August | 428.6 | 696.8 | 1,271.8 | |
| September | 308 | 491.6 | 912.9 | |
| October | 309 | 631.5 | 1,871.9 | |
| November | 514.9 | 1,256.7 | 3,672 | |
| December | 682 | 1,551.9 | 4,129.4 |
All values in cubic feet per second (cfs).