USGS 14243000 COWLITZ RIVER AT CASTLE ROCK, 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 48.0 feet.

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

Boating safety tips

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

Available Parameters Available Period
  
1961-12-20  2026-06-09
2007-10-01  2026-06-09
2008-10-01  2026-06-09
2020-10-29  2026-06-09
2023-06-10  2026-06-09
2023-06-10  2026-06-09







 (7)
 
  -- or --

 

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

Discharge, cubic feet per second
Most recent instantaneous value: 6760 06-09-2026   23:30 PDT
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Daily discharge, cubic feet per second -- statistics for Jun 10 based on 84 water years of record more
Min
(1973)		 25th
percen-
tile		 Most Recent
Instantaneous
Value Jun 10		 Median Mean 75th
percen-
tile		 Max
(1933)
3330 6120 6760 10000 10400 12200 31600

Gage height, feet, [NAVD 1988, feet]
Most recent instantaneous value: 34.66 06-09-2026   23:30 PDT
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Stream water level elevation above NAVD 1988, in feet
Most recent instantaneous value: 34.66 06-09-2026   23:30 PDT
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Turbidity, water, unfiltered, monochrome near infra-red LED light, 780-900 nm, detection angle 90 +-2.5 degrees, formazin nephelometric units (FNU), RIGHT BANK, [Analite NEP5000]
Most recent instantaneous value: 55.0 06-10-2026   00:20 PDT
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Water velocity reading from field sensor, feet per second, RIGHT BANK, [from ADVM 1500kHz]
Most recent instantaneous value: 2.63 06-10-2026   00:15 PDT
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Water velocity reading from field sensor, feet per second, RIGHT BANK, [from ADVM 500kHz]
Most recent instantaneous value: 2.68 06-10-2026   00:15 PDT
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