[env-trinity] Trinity River spawning survey update for week December 10-14

Chamberlain, Charles charles_chamberlain at fws.gov
Mon Dec 17 08:53:47 PST 2012

Hi all,
See the Arcata Fish and Wildlife Office's Fisheries page for the latest
in-season update for our mainstem Trinity River spawning survey.

Reaches 1-4 (Lewiston Dam to Douglas City Campground) and 6-7 (Round House
to Pigeon Point) were surveyed this week.  Only 35 redds were mapped as
spawning activity in the upper river appears to be wrapping up.

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.  One thing to note:  We did not survey reach 8 (Pigeon Point run)
this year in an effort to reduce risk to personnel and equipment.  I'll
work on re-creating the graph below to that it shows previous years minus
the Pigeon Point redds for a fairer comparison to our 2012 data.

[image: Inline image 1]

Crews this week will survey reach 1 and maybe reach 2.  Next week's update
will likely be our last for this season.
Until then,

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<https://mail.google.com/mail/?view=cm&fs=1&tf=1&to=Charles_Chamberlain@fws.gov>
Phone: (707) 825-5110    Fax: (707) 822-8411
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