[env-trinity] Trinity River spawning survey update for week December 17-21

[Chamberlain, Charles]

Hi all,
This last update for our 2012 Trinity River salmon spawning survey has been
posted at the Arcata Fish and Wildlife Service website.
http://www.fws.gov/arcata/fisheries/default.htm

Only reaches 1-3 (Lewiston Dam to Steelbridge River Access) were surveyed
this week, and only 7 new redds were identified and mapped - all in reach 1
(Lewiston Dam to Old Bridge).

The figure below is clipped from this week's report and shows how this
year's running total from Lewiston Dam to Cedar Flat compares to years
previous.  We did not survey reach 8 (Pigeon Point run) this year in an
effort to reduce risk to personnel and equipment.  Reach 8 data have been
removed from the figure below to reflect a fairer comparison to our 2012
data.
[image: Inline image 1]

Our next steps in the coming weeks will be to use collected carcass data to
estimate contributions by Chinook salmon vs coho salmon and by hatchery vs.
wild fish.  Will announce when those results are available.

Thanks for tuning in this season!
Merry Christmas/happy holidays, and I wish you all a great 2013! Charlie

Charles Chamberlain
Supervisory Fish Biologist
U.S. Fish and Wildlife Service
Arcata Fish & Wildlife Office
1655 Heindon Road
Arcata, CA 95521

Charles_Chamberlain at fws.gov
Phone: (707) 825-5110    Fax: (707) 822-8411
www.fws.gov/arcata/fisheries
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