Georgia has won a landmark ruling against Florida in a U.S. Supreme Court case over water sharing in a basin the two states share with Alabama. A Maine lawyer presiding over the case rejected Florida’s attempts to set limits on Georgia’s consumption of water in the Apalachicola-Chattahoochee-Flint River Basin, which includes Lake Lanier in the headwaters. “Florida has failed to show that a consumption cap will afford adequate relief,” Ralph I. Lancaster Jr. wrote in a 70-page ruling issued Tuesday.