USGS 12021800 CHEHALIS RIVER NEAR ADNA, WA

PROVISIONAL DATA SUBJECT TO REVISION

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Flood Stage.--The National Weather Service has not established a Flood Stage for this station. Lewis County has Flood Phase 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 8, 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 3.40 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.



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

Available Parameters Available Period
  
2015-10-01  2024-10-08
2007-10-01  2024-10-08
2007-10-01  2024-10-08







 (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: 66.6 10-09-2024   00:00 PDT
Graph of  Discharge, cubic feet per second

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Daily discharge, cubic feet per second -- statistics for Oct 9 based on 9 water years of record more
Min
(2023)
Most Recent
Instantaneous
Value Oct 9
25th
percen-
tile
Median 75th
percen-
tile
Mean Max
(2017)
54.3 66.6 89 111 180 234 1170


Gage height, feet, [NAVD 1988 as of 5/8/2018]

Most recent instantaneous value: 192.85 10-09-2024   00:00 PDT
Graph of  Gage height, feet, [NAVD 1988 as of 5/8/2018]

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Stream water level elevation above NGVD 1929, in feet

Most recent instantaneous value: 189.45 10-09-2024   00:00 PDT
Graph of  Stream water level elevation above NGVD 1929, in feet

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