Sourdough Lake   Be the first to submit input for Sourdough Lake. If you have info on Sourdough Lake, Northern Cascade Range, Whatcom County, Washington please submit it here to improve this web site.          These outdoors activities are available near Sourdough Lake.   Lakes Near Sourdough Lake: Bouck Lake, Whatcom County, 5 miles away   Public Lands Near Sourdough Lake: Rockport State Park, Washington, 36 miles away   Camp Grounds Near Sourdough Lake: Colonial Creek Campground, Whatcom County, 3 miles away Big Bear Campground, Whatcom County, 5 miles away Rainbow Point Campground, Whatcom County, 6 miles away Cougar Island Campground, Whatcom County, 7 miles away   Hiking Trails Near Sourdough Lake: Sourdough Lookout Trail, Whatcom County, 3 miles away        16.4 hiking miles, 5982 feet elevation difference Pyramid Lake Trail, Whatcom County, 3 miles away        2.2 hiking miles, 1153 feet elevation difference Panther Creek Trail, Whatcom County, 7 miles away       8.7 hiking miles, 2363 feet elevation difference   Whitewater Near Sourdough Lake: Stetattle Creek, WhatcomCounty, 5 miles away       Class IV(V) - 4 miles long (Jay Creek to Gorge Lake) Skagit River, WhatcomCounty, 11 miles away       Class II-III+ - 8.9 miles long (Goodell Creek to Copper Creek) Cascade River, SkagitCounty, 15 miles away       Class II - 6 miles long (Mineral Park to Marble Creek Campground)