A truck tire once in the water as part of a marina sits on dry ground as water levels have dropped near the Callville Bay Resort & Marina in the Lake Mead National Recreation Area, Tuesday, Aug. 30, 2022, near Boulder City, Nev. Negotiations over the Colorado River have become increasingly difficult for the seven states that rely on the shrinking river and its reservoirs, including Lake Mead, which is dropping to critically low levels. (AP Photo/John Locher)