Costelloe Reservoir   Be the first to submit input for Costelloe Reservoir. If you have info on Costelloe Reservoir, Morgan County, Colorado please submit it here to improve this web site.          These outdoors activities are available near Costelloe Reservoir.   Lakes Near Costelloe Reservoir: Prewitt Reservoir, Washington County, 17 miles away   Public Lands Near Costelloe Reservoir: North Sterling State Park, Colorado, 31 miles away Jackson Lake State Park, Colorado, 31 miles away   Hotels Near Costelloe Reservoir: Econo Lodge Brush, Brush, 5 miles away Microtel Inn Brush, Brush, 5 miles away Comfort Inn Fort Morgan, Fort Morgan, 12 miles away Rodeway Inn Ft. Morgan, Fort Morgan, 12 miles away Super 8 Ft. Morgan, Fort Morgan, 14 miles away