In the West, pressure to count water lost to evaporation

People walk by a formerly sunken boat standing upright into the air with its stern buried in the mud along the shoreline of Lake Mead at the Lake Mead National Recreation Area, Friday, Jan. 27, 2023, near Boulder City, Nev. More than 10% of the water carried by the Colorado River evaporates, leaks or spills as the 1,450-mile powerhouse river of the West flows through the region’s dams, reservoirs and open-air canals. (AP Photo/John Locher)