Butte County UV ForecastUnited StatesSDButte CountyLow0.8Belle FourcheLow UV, 0.8Low1Castle RockLow UV, 1ArpanBelle FourcheBelle Fourche Municipal AirportBelle Fourche National Wildlife RefugeBelle Fourche ReservoirCastle RockFruitdaleGuidinger ReservoirHerman ParkHighland ParkHooverNewellNewell LakeNislandRocky Point Recreation AreaVale