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U.S. Geological Survey Open-File Report 2009-1033

Preliminary Geomorphic Map of the Kitsap Peninsula, Washington

By Ralph A. Haugerud



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sheet 2

The Kitsap Peninsula, in the center of the Puget Lowland of Washington State, has been glaciated repeatedly during the last 2 million years. This geologic history is significant to our understanding of crustal deformation, ground- and surface-water resources, the distribution of fishes, and other topics. Recent high-resolution lidar (LIght Detection And Ranging; also known as airborne laser swath mapping, or ALSM) topographic surveys of much of the Puget Lowland provide a more accurate depiction of the morphology of this forested landscape than has previously been available. More accurate morphology promises more accurate mapping of unconsolidated deposits and a more detailed earth history, particularly in this low-relief forested region where outcrops are not abundant and many deposits are similar in composition. In order to clarify the chain of observation and inference that proceeds from morphology to geologic map, this map describes the distribution of morphologic units—the 2-dimensional surfaces that bound near-surface deposits.

Revised August 12, 2009

First posted July 27, 2009


  • GIS data in ArcInfo coverage format:, 20 MB.
    Includes kitsapg.e00, kitsapcmu.e00, kitsapanno.e00, metadata, map text as PDF, plotting resources, and readme.txt.
  • GIS data in shapefile format:, 17 MB.
    Includes kitsapgl (lines) shapefile, kitsapgp (polygons) shapefile, metadata, and readme.txt.
  • Readme file that describes contents of above packages: readme.txt, 18 kB.

  • Text-format FGDC metadata: kitsap_metadata.txt, 27 kB.

For additional information:
Contact Information, Western Region Geology and Geophysics Science Center—Seattle
U.S. Geological Survey
Univ. of Washington
Dept. Earth and Space Sciences
63 Johnson Hall, Box 351310
Seattle, WA 98195-1310

Part of this report is presented in Portable Document Format (PDF); the latest version of Adobe Reader or similar software is required to view it. Download the latest version of Adobe Reader, free of charge.

Suggested citation:

Haugerud, Ralph A., 2009, Preliminary geomorphic map of the Kitsap Peninsula, Washington: U.S. Geological Survey, Open-File Report 2009-1033, 2 sheets, scale 1:36,000 [].




Landscape Evolution

Late Pleistocene Glaciation

Latest Pleistocene Deglaciation

Holocene events

Note on Base Map


References Cited

Description of Map Units

Explanation of Map Symbols

Correlation of Map Units

Accessibility FOIA Privacy Policies and Notices

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