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DESCRIPTION:

Latitude 46°20'06",   Longitude 122°50'27"   NAD83

Cowlitz County, Washington, Hydrologic Unit 17080005

Drainage area: 496 square miles

Datum of gage: 120.00 feet above   NGVD29.

AVAILABLE DATA:

Data Type	Begin Date	End Date	Count
Current / Historical Observations     (availability statement)	1991-04-05	2017-08-23
Daily Data
Discharge, cubic feet per second	1981-03-24	2017-08-22	13286
Gage height, feet	2003-09-30	2017-08-22	5026
Turbidity, water, unfiltered, monochrome near infra-red LED light, 780-900 nm, detection angle 90 +-2.5 degrees, formazin nephelometric units (FNU)	2009-09-30	2017-08-22	6522
Suspended sediment concentration, milligrams per liter	1981-06-08	2016-09-30	8003
Suspended sediment discharge, short tons per day	1981-06-08	2016-09-30	8882
Daily Statistics
Discharge, cubic feet per second	1981-03-24	2016-10-19	12994
Gage height, feet	2003-09-30	2016-10-19	4734
Suspended sediment concentration, milligrams per liter	1981-06-08	2015-09-29	7636
Suspended sediment discharge, short tons per day	1981-06-08	2015-09-29	8515
Monthly Statistics
Discharge, cubic feet per second	1981-03	2016-10
Gage height, feet	2003-09	2016-10
Suspended sediment concentration, milligrams per liter	1981-06	2015-09
Suspended sediment discharge, short tons per day	1981-06	2015-09
Annual Statistics
Discharge, cubic feet per second	1981	2017
Gage height, feet	2003	2017
Suspended sediment concentration, milligrams per liter	1981	2015
Suspended sediment discharge, short tons per day	1981	2015
Peak streamflow	1982-02-20	2015-12-09	35
Field measurements	1981-03-25	2017-07-25	635
Field/Lab water-quality samples	1974-04-18	2017-03-20	4847
Water-Year Summary	2006	2016	11
Additional Data Sources	Begin Date	End Date	Count
Instantaneous-Data Archive  **offsite**	1992-10-01	2007-09-30	306452

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