[env-trinity] 2023/24 CDFW Trinity River Project trapping summary through Julian week 28 (July 15)

[Kier, Mary Claire@Wildlife]

Greetings!
Attached please find the TRP trapping summary through JW 28 (July 15).

Those of you who are fishing the Trinity are likely aware, but for those of you who aren't on the river, we are seeing a lot of serious gill rot in the springers at JCW.
The gauge at Douglas City is showing 63 degrees F water temp, but it is buried in sediment and not correct. We're showing 63 degrees at the JC weir, but the lower Trinity is hot, in the 70s in Hoopa, and now nearing 70 at the North Fork. We see dead fish every year in the Trinity but may see more than usual if the water doesn't cool down soon. Fingers crossed.

If you're looking at the ad-clip rate of the adult Chinook, keep in mind it is the 4-year-olds this year that are from the 2019 BY that didn't get clipped because of the pandemic. The particularly low ad-clip rate could indicate that the 4-year-olds are the largest component of the adult run.
For those of you who are new to this trapping summary I will remind you (from the INFO tab) "Trapping numbers and totals at Junction City and Willow Creek weirs are not total population estimates." We always hope to sample at least 10% of the population. Last year at JCW we encountered an estimated 18% of the spring run. We'll only know how big the 2023 run is after we do a little math at the end of the season.

I'll be gone much of next week so the JW 29 summary will be later than normal.
Cheers!
MC

******************************************************
Mary Claire Kier
CA Department of Fish and Wildlife - Trinity River Project
Environmental Scientist - Fisheries
(I'm often teleworking, or in the field. Please use my email address if you need to contact me.)
5341 Ericson Way, Arcata CA 95521
******************************************************
Klamath/Trinity Program reports can be found online @
https://nrmsecure.dfg.ca.gov/documents/ContextDocs.aspx?cat=KlamathTrinity
If you'd like to be added to the distribution list of the Trinity River Project's trapping summaries let me know.

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