Pony Express Reservoir   Be the first to submit input for Pony Express Reservoir. If you have info on Pony Express Reservoir, Millard County, Utah please submit it here to improve this web site.          These outdoors activities are available near Pony Express Reservoir.   Hotels Near Pony Express Reservoir: Days Inn Delta, Delta, 40 miles away Oak Tree Inn Milford, Milford, 42 miles away