b'Idaho Aquifers by TypeBasin and Range aquifersBasin and Range carbonate-rock aquifersColumbia Plateau aquifer systemMiocene basaltic-rock aquifersNorthern Rocky Mountains IntermontaneBasins aquifer systemsPacic Northwest basin-ll aquifersPliocene and younger basaltic-rock aquifersSnake River Plain aquifer systemVolcanic- and sedimentary-rock aquifersFIGURE 1. Idaho Aquifer TypesSource: Digital Geology of Idaho, ISU130 I D A H O I N F R A S T R U C T U R E G U I D E B O O K'