Custer County RainfallUnited StatesSDCuster County90%Custer 90% Chance 85%Hermosa 85% Chance 90%Fairburn 90% Chance 85%Dewey 85% Chance 90%Buffalo Gap 90% 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