Lake Meredith National Recreation Area supplies water for 11 cities, and opportunities for fishing, boating, waterskiing, sailing, scuba diving, and swimming.
Lake Mead National Recreation Area offers huge lakes for boaters, swimmers, and fishermen while its desert rewards hikers, photographers, and sightseers.
Opportunities for hiking, boating, swimming, and fishing abound at Glen Canyon National Recreation Area, which stretches from Arizona to southern Utah.
Extending through New York City and New Jersey, opportunities for swimming, boating, fishing, and bicycling are abundant at the Gateway National Recreation Area.