Middleton Island is an island in the U.S. state of Alaska, located in the Pacific Ocean approximately 80 miles southwest of Cordova. Most of the acreage on the island is owned by Chugach Alaska Corporation, a for-profit corporation. The island is also home of the unattended 200-acre Middleton Island Airport and NEXRAD weather radar, and the privateā¦Middleton Island is an island in the U.S. state of Alaska, located in the Pacific Ocean approximately 80 miles southwest of Cordova. Most of the acreage on the island is owned by Chugach Alaska Corporation, a for-profit corporation. The island is also home of the unattended 200-acre Middleton Island Airport and NEXRAD weather radar, and the privately owned 182-acre Middleton Island Marine Biological Station with researchers resident year-round.