Overview Graham Creek Campground is situated above Vallecito Lake, in the scenic San Juan National Forest of southwestern Colorado. Visitors enjoy the area for its beautiful scenery and wide range of recreational activities, including boating, fishing and hiking.Recreation Vallecito Lake is a very popular fishing destination, where anglers cast for German brown trout, cutthroat trout, rainbow trout, kokanee salmon and northern pike. The lake offers great boating, water skiing and canoeing oppo