| Station: | Salem, Oregon | Continent: | North America | ||
| River: | Willamette | Major Basin : | Columbia River | ||
| Country: | United States | Discharge into : | Pacific Ocean | ||
| Observation Period: | 1909 - 1984 | Total Months: | 819 | ||
| Latitude (dec deg): | 44.95 N | Area (km2): | 18855 | ||
| Longitude (dec deg): | 123.03 W | Elevation (m): | 32 | ||
| Annual Discharge: (m3/s): | 685.7 | (km3/yr): | 21.6 | ||
| Annual Runoff: (l/s/km2): | 36.3 | (mm/yr): | 1145.9 |
| Mean for Observation Period | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
| m3/sec | 1345.6 | 1178.4 | 943.8 | 986.2 | 595.8 | 403.5 | 208.3 | 153.5 | 185.8 | 287.8 | 784.8 | 1183.6 |
| km3/mo | 3.6 | 2.9 | 2.5 | 2.6 | 1.6 | 1.0 | 0.6 | 0.4 | 0.5 | 0.8 | 2.0 | 3.2 |
| mm/mo | 191.1 | 151.2 | 134.1 | 135.6 | 84.6 | 55.5 | 29.6 | 21.8 | 25.5 | 40.9 | 107.9 | 168.1 |
| l/s/km2 | 71.4 | 62.5 | 50.1 | 52.3 | 31.6 | 21.4 | 11.0 | 8.1 | 9.9 | 15.3 | 41.6 | 62.8 |
