(July 10, 2017, 10:58 AM EDT) -- WASHINGTON, D.C. — Two California water districts on July 5 petitioned the U.S. Supreme Court to settle the issue of whether the federal government and a Native American tribe have reserved rights to groundwater under federally reserved land (Coachella Valley Water District, et al. v. Agua Caliente Band of Cahuilla Indians, et al., No. 17-40, U.S. Sup.)....