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Scheduled Maintenance Notice
USGS will be performing maintenance on the time series data processing system beginning at 09:00 EDT on September 10, 2026. During this period, delivery of the latest time series data will be delayed. The maintenance is expected to finish within 2 hours, after which all backlogged time series data will be processed and delivered to WDFN web portals and APIs.

This station is operated seasonally (Oct. 1 through Apr. 30).

Available data

Select data types to graph from categories based on the way the data were collected.

1 data types available - data from 2012-10-01 to 2026-05-01

1 data types available - data from 2012-09-30 to 2026-04-30

2 data types available - data from 2007-09-11 to 2026-05-18

0 observed properties (data types) available

1 data types available - data from 2012-09-30 to 2026-04-30

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Metadata Element	Location Metadata	Metadata Code
Agency	U.S. Geological Survey	USGS
Location identification number	12028060	n/a
Location name	CHEHALIS RIVER NEAR ROCHESTER, WA	n/a
Site type	Stream	ST
Decimal latitude (WGS84)	46.8067665459951	n/a
Decimal longitude (WGS84)	-123.120140923943	n/a
Latitude-longitude method	Interpolated from map	M
Latitude-longitude accuracy	Accurate to + or - .5 sec (PLGR/PPS GPS).	5
District	Washington	53
State	Washington	53
County	Thurston County	067
Country	United States of America	n/a
Altitude of gage/land surface	0	n/a
Method altitude determined	Level or other surveyed method.	L
Altitude accuracy	5 feet	n/a
Altitude datum	North American Vertical Datum of 1988	NAVD88
Subbasin hydrologic unit	Upper Chehalis	17100103
Drainage basin		n/a
Date of first construction		n/a
Drainage area	957 square miles	n/a
Contributing drainage area		n/a
Time zone abbreviation	PST	n/a
Site honors Daylight Saving Time	Y	n/a
National aquifer		n/a
Local aquifer		n/a
Local aquifer type		n/a
Well depth		n/a
Hole depth		n/a
Source of depth data		n/a