Location.--Latitude 47°39'58", Longitude
121°55'27", in NW 1/4 SW 1/4 Section 9, Township 25 North,
Range 7 East, in King County, Hydrologic Unit 17110010, on
left bank 40 feet downstream from highway bridge, 1.3 miles northwest
of Carnation, 1.9 miles downstream from Tolt River, and at river mile
23.0. Drainage
area is 603 mi2. Datum of
gage is NGVD of 1929.
Maps.--Locate
this station on a
map of the basin (PDF).
Additional Data and Information.--Station data
inventory, annual data report,
and latest shifted
rating.
Flood Stage.--The National Weather Service Flood
Stage for this station is 54.0 feet.
Funding for this site is provided by the
cooperators / programs below:
Station Notes
At this site, near-real-time
provisional discharges greater than 9,000 ft3/s (gage heights
greater than about 50 ft) are not reliable due to unsteady flow
conditions during high flows. Under these conditions, a loop
stage-discharge rating exists such that the true discharge is
generally greater than indicated on a rising hydrograph and less
than indicated on a falling hydrograph. Corrections are applied
following a high-flow event but data remain provisional until
approved. (Message posted February 20, 2015.)
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