Cabin Reservoir   Be the first to submit input for Cabin Reservoir. If you have info on Cabin Reservoir, Valley County, Montana please submit it here to improve this web site.          These outdoors activities are available near Cabin Reservoir.   Public Lands Near Cabin Reservoir: Hell Creek State Park, Montana, 21 miles away   Marinas On or Near Cabin Reservoir: Rock Creek Marina, Fort Peck, 19 miles away