Notice of planned maintenance to underlying USGS network September 24-26, 2021: During this maintenance period users may experience intermittent periods of inaccessibility or delayed delivery of hydrologic data to the USGS National Water Information System (NWIS). Please email firstname.lastname@example.org with any concerns regarding impacts to data delivery.
Location.--Latitude 48°06'44", Longitude
123°33'03", in NE 1/4 NW 1/4 Section 10, Township 30 North,
Range 7 West, in Clallam County, Hydrologic Unit 17110020, on
right bank 3.5 miles upstream from mouth, 5.7 miles west of Port
area is 318 mi2. Elevation
of gage is NAVD 1988.
This station has two turbidity
sensors that use different methods for measuring turbidity.
Turbidity values from these sensors are not directly comparable and
it is common for the sensors to produce different readings. Due to
extreme sediment conditions in the Elwha River, reported DTS-12
values above 1,000 FNU may be subject to reduced accuracy. For
turbidity conditions greater than 1,000 FNU, refer to available
data from the Analite sensor.
On January 27, 2017, Turbidity,
water, unfiltered, monochrome near infra-red LED light source,
780-900 nm, detection angle 0-45 degrees to incident light
(backscatter), FBU, [ANA] records were revised for Sept. 18, 2013
to Sept. 30, 2014. (Message posted January 30,
Turbidity, stage data
collection, and gaging station photos have been discontinued
starting October 1, 2019 due to a lack of funding. If
you have questions, please contact the Western Washington Field
Office Chief at email@example.com.