índex ultraviolat a North Spit (Humboldt Bay) (1.2 mi.) | índex ultraviolat a Elk River Railroad Bridge (1.6 mi.) | índex ultraviolat a Eureka (2.5 mi.) | índex ultraviolat a Eureka Slough Bridge (3 mi.) | índex ultraviolat a Samoa (4 mi.) | índex ultraviolat a Fields Landing (4 mi.) | índex ultraviolat a Mad River Slough (Arcata Bay) (6 mi.) | índex ultraviolat a Hookton Slough (6 mi.) | índex ultraviolat a Arcata Wharf (6 mi.) | índex ultraviolat a Trinidad Harbor (19 mi.) | índex ultraviolat a Shelter Cove (53 mi.)