Click
to
hide
Water-Year
Summary
instructions
and
information
- Water-Year Summary reports summarize a year of hydrologic data in a printer-friendly format.
- For water years 2014 onward, choose a water year and parameter and an on-demand Water-Year Summary report will be generated.
- For water years 2006 through 2013, choose a water year and an Annual Water Data Report will be provided.
- For water years 2005 and earlier, Annual Water Data Reports may be available in digital format.
- Not all sites have reports available for every water year.
USGS Water-Year Summary 2024
12028060 CHEHALIS RIVER NEAR ROCHESTER, WA
LOCATION - Lat 46°48'25", long 123°07'08" referenced to North American Datum of 1927, in NE 1/4 NE 1/4 sec.12, T.15 N., R.4 W., Thurston County, WA, Hydrologic Unit 17100103, at Independence Rd bridge, 1.6 mi southwest of Rochester, and at mile 54.2.
DRAINAGE AREA - 957 mi².
SURFACE-WATER RECORDS
PERIOD OF RECORD - September 2007, August 2010 (discharge measurements only). October 2012 to current year (seasonal records).
GAGE - Water stage recorder. Datum of gage is NAVD of 1988.
REMARKS - Elevation record only. Minor effect from regulation on Skookumchuck River by Skookumchuck Dam since January 1971. Up to 54 ft³/s of Skookumchuck River is consumptively used at Centralia steam generating plant. Many small diversions for irrigation and domestic use upstream from station, including about 3 ft³/s for municipal water supply for Centralia and Chehalis. U.S. Geological Survey satellite telemeter at station.
EXTREMES FOR PERIOD OF RECORD - Maximum elevation, 118.04 ft, Jan. 06, 2015; minimum elevation, 103.77 ft, Oct. 06, 2015.
