USGS 12013500 WILLAPA RIVER NEAR WILLAPA, 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 21.0 feet.

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

Station Notes

The datum of the gage has been determined to be 6.92 ft above NAVD 1988. To obtain stream water-surface elevation values in NAVD 1988, add 6.92 ft to gage height values.

tide
This station is affected by extreme high tides in Willapa Bay.

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

Available Parameters Available Period
  
1987-10-01  2025-09-10
2007-10-01  2025-09-10







 (7)
 
  -- or --

 

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

Discharge, cubic feet per second
Most recent instantaneous value: 23.2 09-10-2025   07:45 PDT
Graph of Discharge, cubic feet per second

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Daily discharge, cubic feet per second -- statistics for Sep 10 based on 70 water years of record more
Min
(2021)		 Most Recent
Instantaneous
Value Sep 10		 25th
percen-
tile		 Median Mean 75th
percen-
tile		 Max
(1978)
14.4 23.2 27 36 54 56 605

Gage height, feet
Most recent instantaneous value: 2.82 09-10-2025   07:45 PDT
Graph of Gage height, feet

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