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Arctic Alaska Lake Cover Map

Lake cover strongly affects the reflectance of the land surface over large areas of Alaska, and was useful for identifying extensive wetlands. Lake cover was based on the number of AVHRR water pixels in each mapped polygon, divided by the number of pixels in the polygon. Since the imagery has a pixel size of 1 km^2, lake cover is underestimated for areas with many small lakes. Pixels within 2 km of the coastline were excluded to avoid ocean water. The percent cover data were grouped into six categories: < 2%, 2-10%, 10-25%, 25-50%, 50-75%, and 75-100%. Since the sum of the last three categories was only 1.5%, (the 75-100% category covered 1% of the map), they were combined for the map into one category, >25%.

Back to Alaska Arctic Tundra Vegetation Map

Data and Resources

  • Download
    Download :: GIS Data

    aga_arctic_ak_lake_cover_2005.shp.zip (191 KB)

  • Download
    Download :: Map Image

    aga_arctic_ak_lake_cover_2005.png (84.4 KB)

  • View website
    Website :: Toolik Arctic Geobotanical Atlas

    http://www.arcticatlas.org/maps/themes/ak/aklc

Status: Complete
Type: Data
Data Types: Image, GIS, Map
Primary Contact
Walker, Donald A. (Skip)
Email: dawalker@alaska.edu
ISO Topics
biota, geoscientificInformation, inlandWaters

Geo-keywords
Alaska, Arctic

Collection
Alaska Arctic Tundra Vegetation Map, All Maps

Direct Record Link
http://agc.portal.gina.alaska.edu/catalogs/9778-arctic-alaska-lake-cover-map
  • 07969bba1ee875e70c44c0423525d17f
    Updated by Jana
    2016-07-20 12:41:02 -0800
  • 07969bba1ee875e70c44c0423525d17f
    Updated by Jana
    2016-07-20 12:40:45 -0800
  • 07969bba1ee875e70c44c0423525d17f
    Updated by Jana
    2016-07-20 12:40:13 -0800
  • 07969bba1ee875e70c44c0423525d17f
    Updated by Jana
    2016-07-20 12:39:49 -0800
  • 07969bba1ee875e70c44c0423525d17f
    Updated by Jana
    2016-07-20 12:34:57 -0800
  • 07969bba1ee875e70c44c0423525d17f
    Updated by Jana
    2016-02-17 18:34:28 -0900
  • 07969bba1ee875e70c44c0423525d17f
    Updated by Jana
    2015-10-07 18:16:14 -0800
  • 07969bba1ee875e70c44c0423525d17f
    Updated by Jana
    2015-10-07 18:14:53 -0800
  • 01c8ceef3d596f40f05bf496ca00d929
    Updated by Lisa
    2015-04-13 14:59:47 -0800
  • 01c8ceef3d596f40f05bf496ca00d929
    Published by Lisa
    2015-04-03 12:48:12 -0800
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