USGS 12027500 CHEHALIS RIVER NEAR GRAND MOUND, WA

PROVISIONAL DATA SUBJECT TO REVISION

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Additional Data and Information.-- Latest shifted rating.

Flood Stage.--The National Weather Service Flood Stage for this station is 141.0 feet. Thurston County has Flood Information for this gage.

Funding for this site is provided by the cooperators / programs below:

Station Notes
gage
Gage height datum conversion to the NAVD88 datum for this streamgage was completed on May 10, 2018. All reported gage heights and those associated with discharge measurements and stage-discharge ratings have been converted and are consistent with elevations based on the NAVD88 datum. A conversion factor of 127.03 ft was used to convert the old gage heights to the currently reported instantaneous gage height, discharge measurement gage heights, and stage-discharge rating points.

Boating safety tips

This station managed by the Western Washington Field Office (Tacoma).

Available Parameters Available Period
  
1987-10-01  2024-11-23
2007-10-01  2024-11-23







 (7)
 
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Summary of all available data for this site
Instantaneous-data availability statement

Discharge, cubic feet per second
Most recent instantaneous value: 5660 11-23-2024   13:00 PST
Graph of Discharge, cubic feet per second

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Daily discharge, cubic feet per second -- statistics for Nov 23 based on 96 water years of record more
Min
(1953)		 25th
percen-
tile		 Median Mean Most Recent
Instantaneous
Value Nov 23		 75th
percen-
tile		 Max
(1960)
213 1310 3290 4980 5660 7580 22300

Gage height, feet, [NAVD 1988 as of 5/10/2018]
Most recent instantaneous value: 134.51 11-23-2024   13:00 PST
Graph of Gage height, feet, [NAVD 1988 as of 5/10/2018]

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