The Imuruk Basin is a large interior body of water on western Alaska's

Alaska

Alaska is the largest state in the United States by area. It is situated in the northwest extremity of the North American continent, with Canada to the east, the Arctic Ocean to the north, and the Pacific Ocean to the west and south, with Russia further west across the Bering Strait...

 Seward Peninsula

Seward Peninsula

The Seward Peninsula is a large peninsula on the western coast of the U.S. state of Alaska. It projects about into the Bering Sea between Norton Sound, the Bering Strait, the Chukchi Sea, and Kotzebue Sound, just below the Arctic Circle...

. The drainage for this brackish saltwater lagoon covers about one quarter of the peninsula. The Kuzitrin

Kuzitrin River

The Kuzitrin River is a river found on the Seward Peninsula of Northwest Alaska. The river headwaters are at the Lost Jim Lava Flow in the central region of the peninsula, and flows 95 miles west into the Imuruk Basin, which eventually feeds the Bering Sea. Kuzitrin tribuatries include the...

, Pilgrim

Pilgrim River

The Pilgrim River is a river in Portage Township, Houghton County, Michigan. The river flows near the Portage Lake Golf Course and empties into the Keweenaw Waterway....

, Cobblestone and Agiapuk rivers empty into the Imuruk Basin. The basin was a strategic waterway for early Eskimos by providing accessibility to the Bering Sea

Bering Sea

The Bering Sea is a marginal sea of the Pacific Ocean. It comprises a deep water basin, which then rises through a narrow slope into the shallower water above the continental shelves....

from the Seward Peninsula's interior.