Custer County RainfallUnited StatesSDCuster County5%Custer 5% Chance 5%Hermosa 5% Chance 5%Fairburn 5% Chance 10%Dewey 10% Chance 5%Buffalo Gap 5% 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