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USGS 12442500 SIMILKAMEEN RIVER NEAR NIGHTHAWK, 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 14.0 feet.

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

Station Notes
ice
This station is affected by ice during extreme cold weather periods. A description of the types of ice affecting rivers can be download here.
This station managed by the Upper Columbia Field Office (Spokane).

Available Parameters Available Period
  
2014-03-01  2025-12-21
1988-05-01  2025-12-21
2007-10-01  2025-12-21
2021-05-11  2025-12-21
2021-05-11  2025-12-21
2021-05-11  2025-12-21
2022-12-21  2025-12-16
2021-07-22  2025-12-21







 (7)
 
  -- or --

 

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

Temperature, water, degrees Celsius, [Pub]
Most recent instantaneous value: 1.9 12-21-2025   12:30 PST
Graph of Temperature, water, degrees Celsius, [Pub]

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Discharge, cubic feet per second
Most recent instantaneous value: 5220 12-21-2025   12:30 PST
Graph of Discharge, cubic feet per second

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Daily discharge, cubic feet per second -- statistics for Dec 21 based on 97 water years of record more
Min
(1999)		 25th
percen-
tile		 Median Mean 75th
percen-
tile		 Max
(1996)		 Most Recent
Instantaneous
Value Dec 21
150 445 615 763 1020 2290 5220

Gage height, feet
Most recent instantaneous value: 6.80 12-21-2025   12:30 PST
Graph of Gage height, feet

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Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius
Most recent instantaneous value: 132 12-21-2025   12:30 PST
Graph of Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius

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Dissolved oxygen, water, unfiltered, milligrams per liter
Most recent instantaneous value: 11.5 12-21-2025   12:30 PST
Graph of Dissolved oxygen, water, unfiltered, milligrams per liter

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pH, water, unfiltered, field, standard units
Most recent instantaneous value: 6.9 12-21-2025   12:30 PST
Graph of pH, water, unfiltered, field, standard units

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Dissolved organic matter fluorescence (fDOM), water, in situ, concentration estimated from reference material, micrograms per liter as quinine sulfate equivalents (QSE), [Corrected for Water Temp and T]
Most recent instantaneous value: 0.5 12-16-2025   05:30 PST
Graph of Dissolved organic matter fluorescence (fDOM), water, in situ, concentration estimated from reference material, micrograms per liter as quinine sulfate equivalents (QSE), [Corrected for Water Temp and T]

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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)
Most recent instantaneous value: 90.1 12-21-2025   12:30 PST
Graph of Turbidity, water, unfiltered, monochrome near infra-red LED light, 780-900 nm, detection angle 90 +-2.5 degrees, formazin nephelometric units (FNU)

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