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  2026-06-08
2007-10-01  2026-06-08
2008-10-01  2026-06-08
2020-10-29  2026-06-08
2023-06-08  2026-06-08
2023-06-08  2026-06-08







 (7)
 
  -- or --

 

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

Discharge, cubic feet per second
Most recent instantaneous value: 5360 06-08-2026   19:30 PDT
Graph of Discharge, cubic feet per second

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Daily discharge, cubic feet per second -- statistics for Jun 8 based on 84 water years of record more
Min
(1973)		 Most Recent
Instantaneous
Value Jun 8		 25th
percen-
tile		 Median Mean 75th
percen-
tile		 Max
(1936)
3430 5360 6500 8680 10200 12800 33800

Gage height, feet, [NAVD 1988, feet]
Most recent instantaneous value: 34.17 06-08-2026   19:30 PDT
Graph of Gage height, feet, [NAVD 1988, feet]

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Stream water level elevation above NAVD 1988, in feet
Most recent instantaneous value: 34.17 06-08-2026   19:30 PDT
Graph of Stream water level elevation above NAVD 1988, in feet

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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: 2.9 06-08-2026   19:20 PDT
Graph of Turbidity, water, unfiltered, monochrome near infra-red LED light, 780-900 nm, detection angle 90 +-2.5 degrees, formazin nephelometric units (FNU), [Analite NEP5000]

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Water velocity reading from field sensor, feet per second, RIGHT BANK, [from ADVM 1500kHz]
Most recent instantaneous value: 2.18 06-08-2026   19:15 PDT
Graph of Water velocity reading from field sensor, feet per second, [from ADVM 1500kHz]

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Water velocity reading from field sensor, feet per second, RIGHT BANK, [from ADVM 500kHz]
Most recent instantaneous value: 2.11 06-08-2026   19:15 PDT
Graph of Water velocity reading from field sensor, feet per second, [from ADVM 500kHz]

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