Custer County RainfallUnited StatesSDCuster County25%Custer 25% Chance 10%Hermosa 10% Chance 10%Fairburn 10% Chance 5%Dewey 5% Chance 10%Buffalo Gap 10% Chance Big Rock ParkBismark LakeBrown FieldBuffalo GapCenter LakeCrazy HorseCusterCuster County AirportCuster State ParkCuster State Park AirportDeweyFairburnHermosaJewel Cave National MonumentLegion LakePringleSanatorStockade LakeSylvan LakeWind Cave National Park