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2021 Map of Dot Island

Name: 2021 Topographic Map of Dot Island
Creator: U.S. Geological Survey
Published: 2021
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 2021

About this map

Yellowstone Lake dominates this 2021 topographic survey, showcasing the intricate shoreline and island geography within Yellowstone National Park. The map details the central portion of the lake, featuring the eponymous Dot Island and the larger Frank Island to the east. Along the western and southern banks, the terrain is marked by a series of prominent landforms including Breeze Point, Wolf Point, and Snipe Point, which define the sheltered waters of Eagle Bay.

Further inland, the landscape reveals smaller hydrological features such as Delusion Lake and the drainage of Weasel Cr in the north. The presence of the Grand Loop Road, specifically the West Thumb-Fishing-Bridge section, provides a clear view of the primary transit corridor through this protected wilderness. The survey also captures the deep recesses of the Flat Mountain Arm in the southeast, providing a detailed record of the park's topography and lake levels in the early 21st century.