ultravioletindeks in Mad River Slough (Arcata Bay) (1.9 mi.) | ultravioletindeks in Samoa (3 mi.) | ultravioletindeks in Eureka Slough Bridge (3 mi.) | ultravioletindeks in Eureka (4 mi.) | ultravioletindeks in Bucksport (6 mi.) | ultravioletindeks in Elk River Railroad Bridge (8 mi.) | ultravioletindeks in North Spit (Humboldt Bay) (8 mi.) | ultravioletindeks in Fields Landing (10 mi.) | ultravioletindeks in Hookton Slough (13 mi.) | ultravioletindeks in Trinidad Harbor (14 mi.) | ultravioletindeks in Shelter Cove (57 mi.)