Southwest Alaska
Introduction
Alaska's Past - Regional Perspectives
Southwest Alaska has two geographic subregions, insular Southwest Alaska and riverine Southwest Alaska. Insular means having to do with islands. Thus insular Southwest Alaska includes the Aleutian Islands, the Pribilof Islands, and Kodiak Island. Riverine means having to do with rivers. Thus riverine Southwest Alaska is that part of the region that is on the Alaska mainland and includes the Yukon, Kuskokwim, and Nushagak rivers and their tributaries.
In insular Southwest Alaska, the Aleutian Islands chain is more than 1,100 miles long. The mountainous, treeless islands begin at the tip of the Alaska Peninsula on the southwest corner of the Alaska mainland. From there the islands extend almost to the Siberia coast. The two major Pribilof Islands, St. Paul and St. George, lie in the Bering Sea about 500 miles northwest of Unalaska in the Aleutian Islands. St. Paul and St. George islands are themselves separated by over 50 miles of the Bering Sea. Kodiak Island, the largest island in Alaska at almost 6,000 square miles, is closer to mainland Alaska than it is to the Aleutian Islands. Kodiak is about 700 miles east of the first major Aleutian Island, Umnak, but only about 50 miles south of the Alaska Peninsula.
The Alaska Peninsula reaches out from mainland Alaska toward the Aleutian Islands and separates Kodiak Island from riverine Southwest Alaska. This area fronts on the Bering Sea north of the Aleutian Islands. Rivers sprawling on that front in broad deltas gradually narrow as they reach inland to their beginnings. Two such major rivers are the Nushagak and the Kuskokwim. The Yukon, riverine Southwest Alaska's other major river, begins in Canada. It is one of the longest rivers on the North American continent.
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