NOAA Regulated Overflight Restriction Zone
To protect seabirds and marine mammals, federal regulations prohibit disturbing wildlife in the sanctuary by operating aircraft below 2,000 feet, within one nautical mile of the coast and offshore rocks and islands (15 CFR Part 922.152.). While this regulation was not intended to affect takeoff and landings from the Copalis Beach airstrip, pilots need to be aware of the regulation. To be in compliance, pilots traveling north from Copalis Airport and flying along the shoreline should ascend to 2,000 ft as soon as it is safe and practicable.
Download a printable flyer of the NOAA Regulated Overflight Zone Poster. (3.8Mb pdf)
More information on the Copalis Beach State Airport.
Additional information for pilots can be found on NOAA's Office of National Marine Sanctuaries' website