indice ultravioletti a Hookton Slough (2.5 mi.) | indice ultravioletti a Elk River Railroad Bridge (2.7 mi.) | indice ultravioletti a North Spit (Humboldt Bay) (3.0 mi.) | indice ultravioletti a Bucksport (4 mi.) | indice ultravioletti a Eureka (6 mi.) | indice ultravioletti a Eureka Slough Bridge (7 mi.) | indice ultravioletti a Samoa (8 mi.) | indice ultravioletti a Arcata Wharf (10 mi.) | indice ultravioletti a Mad River Slough (Arcata Bay) (10 mi.) | indice ultravioletti a Trinidad Harbor (23 mi.) | indice ultravioletti a Shelter Cove (49 mi.)