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2018 Map of Iliamna C-3 NW

Name: 2018 Topographic Map of Iliamna C-3 NW
Creator: U.S. Geological Survey
Published: 2018
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 2018

About this map

Iliamna Lake dominates the western portion of this 2018 survey, where its expansive waters meet the rising terrain of the Aleutian Range. The shoreline is defined by protected waters like Pile Bay and Durants Cove, marking the transition from the lake's surface to the high, glaciated peaks of the interior. To the north, the Iliamna River flows through a broad valley toward its mouth near Pedro Bay, a critical corridor in the southwestern Alaskan wilderness.

The topography transitions sharply from the coastal elevations at Porcupine Island to the steep eastern mountains, which are dissected by drainage systems such as Ptarmigan Cr and Silver Cr. Small inland bodies of water, including Meadow Lake, are tucked into the high-elevation flats between ridges. The map also delineates the boundary between the Lake and Peninsula Borough and Kenai Peninsula Borough, illustrating the administrative divisions in this largely unsettled region.