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USGS 12322000 KOOTENAI RIVER AT PORTHILL ID

  Stream Site

DESCRIPTION:
Latitude 48°59'47",   Longitude 116°30'27"   NAD83
Boundary County, Idaho, Hydrologic Unit 17010104
Drainage area: 13,700 square miles
Datum of gage: 1,700 feet above   NGVD29.
AVAILABLE DATA:
Data Type Begin Date End Date Count
 Current / Historical Observations     (availability statement)    2007-10-17  2025-10-27  
 Daily Data
    Temperature, water, degrees Celsius  1963-05-23  2025-10-26  49277 
    Discharge, cubic feet per second  2013-10-01  2025-10-26  4408 
    Gage height, feet  1960-10-01  2025-10-26  23682 
    Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius  1983-10-01  1989-12-25  1719 
    Discharge, cubic meters per second  2018-12-31  2025-10-26  2491 
    Suspended sediment concentration, milligrams per liter  1983-10-01  1989-09-29  1564 
    Suspended sediment discharge, short tons per day  1983-10-01  1989-09-29  1564 
    Gage height, above datum, meters  2018-12-31  2025-10-26  1826 
 Daily Statistics 
    Temperature, water, degrees Celsius  1998-02-19  2025-06-04 8280 
    Discharge, cubic feet per second  2013-10-01  2025-01-01 4111 
    Gage height, feet  1960-10-01  2025-01-01 23020 
    Discharge, cubic meters per second  2018-12-31  2024-01-01 1828 
    Suspended sediment concentration, milligrams per liter  1983-10-01  1989-09-29 1564 
    Suspended sediment discharge, short tons per day  1983-10-01  1989-09-29 1564 
    Gage height, above datum, meters  2018-12-31  2020-12-30 731 
 Monthly Statistics 
    Temperature, water, degrees Celsius  1998-02  2025-06  
    Discharge, cubic feet per second  2013-10  2025-01  
    Gage height, feet  1960-10  2025-01  
    Discharge, cubic meters per second  2018-12  2024-01  
    Suspended sediment concentration, milligrams per liter  1983-10  1989-09  
    Suspended sediment discharge, short tons per day  1983-10  1989-09  
    Gage height, above datum, meters  2018-12  2020-12  
 Annual Statistics 
    Temperature, water, degrees Celsius  1998  2025  
    Discharge, cubic feet per second  2014  2025  
    Gage height, feet  1961  2025  
    Discharge, cubic meters per second  2019  2024  
    Suspended sediment concentration, milligrams per liter  1984  1989  
    Suspended sediment discharge, short tons per day  1984  1989  
    Gage height, above datum, meters  2019  2021  
 Peak streamflow 1894  2024-05-18  101 
 Field measurements 1979-07-18  2025-08-04  394 
 Field/Lab water-quality samples (Legacy QW is frozen as of March 2024, newer data may be found on MLP) 1949-01-11  2023-09-13  277 
 Water-Year Summary 2006  2025  20 
 Revisions  Loading...
OPERATION:
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