Notice - The USGS Water Resources Mission Area's priority is to maintain the safety and well-being of our communities, including providing critical situational awareness in times of f
looding in all 50 U.S. states and additional territories. Our hydrologic monitoring stations continue to send data in near real-time to NWISWeb, and we are continuing critical water monitori
ng activities to protect life and property on a case-by-case basis. The health and safety of the public and our employees are our highest priorities, and we continue to follow guidance from
the White House, the CDC, and state and local authorities.
Location.--Latitude 48°42'56", Longitude
121°09'02", in SE 1/4 Section 5, Township 37 North, Range 13
East (unsurveyed), in Whatcom County, Hydrologic Unit 17110005, Ross
Lake National Recreation Area, at Diablo Dam on Skagit River, 1.2 miles
downstream from Thunder Creek, 6.0 miles northeast of Newhalem, and at
mile 101.0. Drainage
area is 1,125 mi2, includes 400 mi2 in
Canada. Datum of
gage is City of Seattle datum.