USGS Streamgage 14169000
Long Tom River near Alvadore, OR
Long Tom River near Alvadore, OR is USGS streamgage 14169000 in Oregon, monitoring river discharge in hydrologic subbasin 17090003. It drains a watershed of about 252 square miles. Discharge records at this site go back to 1939. Typical flow runs near 45.3 cfs in July and 53.2 cfs in April, with the higher of the two arriving in April.
Gauge details
- State
- Oregon
- Drainage area
- 252 sq mi
- Subbasin (HUC-8)
- 17090003
- Coordinates
- 44.12261, -123.30031
- USGS site number
- 14169000
- Records begin
- 1939-10-01 (87 years)
Typical flow by month
Long-term daily discharge percentiles from the USGS record (up to 87 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 | 171.5 | 924.5 | 3,282.6 | |
| February | 42.2 | 328.9 | 2,833.8 | |
| March | 32.8 | 77.6 | 1,656.1 | |
| April | 28.9 | 53.2 | 828.7 | |
| May | 26.7 | 69.9 | 387.8 | |
| June | 28.4 | 47.2 | 139.4 | |
| July | 25.9 | 45.3 | 63.7 | |
| August | 26.1 | 52.5 | 93.4 | |
| September | 29.2 | 53.6 | 507.4 | |
| October | 45.4 | 744.9 | 1,306.9 | |
| November | 68 | 538.4 | 1,480.5 | |
| December | 106.9 | 640.9 | 2,834.5 |
All values in cubic feet per second (cfs).