USGS Streamgage 14200000
Molalla River near Canby, OR
Molalla River near Canby, OR is USGS streamgage 14200000 in Oregon, monitoring river discharge in hydrologic subbasin 17090009. It drains a watershed of about 323 square miles. Discharge records at this site go back to 1928. Typical flow runs near 163.5 cfs in July and 1,315.7 cfs in April, with the higher of the two arriving in April.
Gauge details
- State
- Oregon
- Drainage area
- 323 sq mi
- Subbasin (HUC-8)
- 17090009
- Coordinates
- 45.24392, -122.68744
- USGS site number
- 14200000
- Records begin
- 1928-08-01 (98 years)
Typical flow by month
Long-term daily discharge percentiles from the USGS record (up to 96 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 | 617.3 | 1,606.1 | 5,025.5 | |
| February | 543.4 | 1,297.9 | 3,756.9 | |
| March | 628.5 | 1,371.9 | 3,337.1 | |
| April | 685.9 | 1,315.7 | 2,485 | |
| May | 404.3 | 954.9 | 1,953.9 | |
| June | 196.2 | 450.3 | 1,224.6 | |
| July | 83.9 | 163.5 | 302.7 | |
| August | 48 | 79.3 | 150.1 | |
| September | 49.2 | 79.1 | 272.6 | |
| October | 66.7 | 188.1 | 936 | |
| November | 170.7 | 864 | 3,438 | |
| December | 413 | 1,491.7 | 5,051.3 |
All values in cubic feet per second (cfs).