USGS 12181000 SKAGIT RIVER AT MARBLEMOUNT, WA
Skagit County, Washington
Hydrologic Unit Code 17110005
Latitude 48°32'02", Longitude 121°25'43"
NAD27
Drainage area 1,381 square miles
Gage datum 308.64 feet above NAVD88
Location of the site in Washington