USGS Streamgage 12035100
Chehalis River near Montesano, WA
Chehalis River near Montesano, WA is USGS streamgage 12035100 in Washington, monitoring river discharge in hydrologic subbasin 17100104. It sits on the Chehalis River, alongside 6 other gauges Rivermatics tracks on the same river. It drains a watershed of about 1,780 square miles. Discharge records at this site go back to 2001.
Gauge details
- State
- Washington
- Drainage area
- 1,780 sq mi
- Gauge elevation
- 10 ft
- Subbasin (HUC-8)
- 17100104
- Coordinates
- 46.96232, -123.60461
- USGS site number
- 12035100
- Records begin
- 2001-10-02 (25 years)
Common questions
- How long has Chehalis River near Montesano, WA been measured?
- Discharge records at USGS site 12035100 begin in 2001, about 25 years, covering roughly 68 days of published daily values. The long record is what makes the monthly percentiles on this page meaningful.
- Where is Chehalis River near Montesano, WA?
- The gauge sits at 46.96232, -123.60461, in Washington, in hydrologic subbasin 17100104, at an elevation of about 10 feet, draining roughly 1,780 square miles.
- Can I use Chehalis River near Montesano, WA data for flood or safety decisions?
- No. Rivermatics provides estimates, not guarantees, and the readings and forecasts here may be delayed, inaccurate, or wrong. Do not use them for navigation or for any safety, rescue, or emergency decision. Check the National Weather Service and USGS directly, and use your own judgment.
Upstream and downstream on the Chehalis River
Every gauge Rivermatics tracks on this river, ordered by drainage area — upstream first. See the Chehalis River in full.
- Chehalis River near Doty, WA 113 sq mi
- Chehalis River near Adna, WA 340 sq mi
- Chehalis River at Wwtp at Chehalis, WA 618 sq mi
- Chehalis River near Grand Mound, WA 895 sq mi
- Chehalis River near Rochester, WA 957 sq mi
- Chehalis River at Porter, WA 1,294 sq mi
- Chehalis River near Montesano, WA this page