Arizona Republic
Tribes — especially Arizona tribes — are also at risk, according to Cora Tso, a senior researcher at Arizona State University’s Kyl Center for Water Policy. Twenty-two of the Colorado River Basin’s 30 tribes have recognized rights accounting for roughly a quarter of the river’s average supply, Tso said. At least some of their water, such as the Gila River Indian Community’s large share, are in question because they rely on CAP deliveries.