Sweet Briar Lake, North Dakota
Yes, you can hear the trucks in the background from I-94 but that is the only negative thing about this wonderful place.
Driving across country last summer, my husband and I were always on the lookout for nice, clean, free campgrounds. We found a handful that we remember with fondness and this one tops the list.
Sweet Briar Lake was created by a dam if I remember correctly, and it appears to be a good fishing spot. But if you care about birds, this place is a bonanza. From just our little spot overlooking the lake we watched white pelicans, double-crested cormorants and Canada geese swim around and generally busy themselves, and heard red-winged blackbirds make their lovely background music. Most likely a walk around the lake would have resulted in seeing more species but we were more than thrilled to just stay put and enjoy this peaceful display.
Judy's Mostly Alaskan Bird Blog 