ultraviolet index in Clarksburg (11 mi.) | ultraviolet index in Snodgrass Slough (21 mi.) | ultraviolet index in New Hope Bridge (24 mi.) | ultraviolet index in Steamboat Slough (Snug Harbor Marina) (29 mi.) | ultraviolet index in Georgiana Slough Entrance (32 mi.) | ultraviolet index in Rio Vista (32 mi.) | ultraviolet index in Terminous (South Fork) (32 mi.) | ultraviolet index in Threemile Slough (34 mi.) | ultraviolet index in Threemile Slough Entrance (35 mi.) | ultraviolet index in Bradmoor Island (35 mi.)