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Blue dots show spawning, rearing, and migration areas.
Arctic grayling have adapted to the rigors of the climatic and physical environment of the
almost nine months of the year, grayling are confined to relatively small reaches of stream and
river channels for overwintering. The available overwintering habitat is critical to their
survival and is considered to be the major limiting factor for populations of arctic fishes.
After break-up, which begins in late May or early June, Arctic grayling expand their distribution
to include streams and rivers that were previously frozen. Glacial rivers are used as migration
corridors to tundra streams where grayling spawn and rear. The fish appear to return and spawn
in the same stream in which they were born. Young of the year fish emerge from the gravel
in late June and early July. In August and September, Arctic
grayling return to overwintering areas in river channels associated with year round springs and
deep pools. Grayling mature between the age of six and nine years.
Daum, D., P. Rost, and M.W. Smith. 1984. Fisheries studies on the north slope of the
Arctic National Wildlife Refuge, 1983. Pages 464-522 in G.W. Garner and P.E. Reynolds,
editors. Arctic National Wildlife Refuge coastal plain resource assessment: 1983 update
report, baseline study of the fish, wildlife, and their habitats. U.S. Fish and Wildlife
Service, Anchorage, Alaska.
West, R.L., M.W. Smith, W.E. Barber, J.B. Reynolds, and H. Hop. 1992. Autumn migration
and overwintering of Arctic grayling in coastal streams of the Arctic National Wildlife
Refuge, Alaska. Transactions of the American Fisheries Society 121:709-715.
Wiswar, D.W. 1992. Summer distribution of arctic fishes in the Okpilak, Akutoktak,
Katakturuk, and Jago rivers, Arctic National Wildlife Refuge, Alaska, 1990. U.S. Fish and
Wildlife Service, Alaska Fisheries Technical Report Number 17, Fairbanks, Alaska.
Wiswar, D.W. 1994. Summer Distribution of Arctic Fishes in the 1002 Area of the Arctic
National Wildlife Refuge, Alaska, 1991 with emphasis on selected lakes, tundra streams, and
the Sadlerochit River drainage. U.S. Fish and Wildlife Service, Alaska Fisheries Technical
Report Number 27, Fairbanks, Alaska.
Note: This is the MapCruzin.com archive of the FWS Arctic National Wildlife Refuge website. In December, 2001 FWS took this website offline, making it unavailable to the public. It includes 90 plus pages of information and many maps. As of 2006 the important information contained in this, the original "unsanitized" version of the FWS website, has yet to return to the internet, so we will continue to maintain it here as a permanent archive to help inform activists and concerned citizens. If you find any broken links, please report them to me at [email protected] and I will attempt to make the repairs. January, 2008 update - A small part of the original information that was present in 2001 has made it back into the current ANWR website. There is also an archive that contains a small amount of the original information, but it is not readily available from the main website.
U.S. Fish and Wildlife Service. 2001. Potential impacts of proposed oil and gas
development on the Arctic Refuge’s
coastal plain: Historical overview and
issues of concern. Web page of the Arctic National
17 January 2001. http://arctic.fws.gov/issues1.html
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