USGS Streamgage 12039005
Humptulips River below Hwy 101 near Humptulips, WA
Humptulips River below Hwy 101 near Humptulips, WA is USGS streamgage 12039005 in Washington, monitoring river discharge in hydrologic subbasin 17100105. It drains a watershed of about 132 square miles. Discharge records at this site go back to 2002. Typical flow runs near 221.8 cfs in July and 1,140.9 cfs in April, with the higher of the two arriving in April.
Gauge details
- State
- Washington
- Drainage area
- 132 sq mi
- Gauge elevation
- 106 ft
- Subbasin (HUC-8)
- 17100105
- Coordinates
- 47.23148, -123.97406
- USGS site number
- 12039005
- Records begin
- 2002-07-20 (24 years)
Typical flow by month
Long-term daily discharge percentiles from the USGS record (up to 24 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 | 770.5 | 2,077.7 | 8,056.5 | |
| February | 622.3 | 1,283.4 | 3,920 | |
| March | 631.8 | 1,529.7 | 4,395.8 | |
| April | 585.5 | 1,140.9 | 2,762.7 | |
| May | 313.7 | 596 | 1,482.8 | |
| June | 189.2 | 372.6 | 838.4 | |
| July | 132.7 | 221.8 | 440.2 | |
| August | 107 | 157.8 | 397.3 | |
| September | 115.6 | 188.5 | 821.5 | |
| October | 154.4 | 700 | 3,371.9 | |
| November | 595.6 | 1,873 | 6,881.3 | |
| December | 667.6 | 1,861.9 | 6,327.7 |
All values in cubic feet per second (cfs).