(April 10, 2017, 2:02 PM EDT) -- RIVERSIDE, Calif. — Two California water agencies on April 6 asked the Ninth Circuit U.S. Court of Appeals to stay its mandate in a case involving tribal groundwater rights because they plan to file a petition for a writ of certiorari with the U.S. Supreme Court (Agua Caliente Band of Cahuilla Indians v. Coachella Valley Water District, et al., No. 15-55896, 9th Cir.)....