[env-trinity] 2024/25 CDFW Trinity River Project trapping summary through Julian week 9 (March 4)

[Lindke, Kenneth@Wildlife]

Good morning,

Attached is the Trinity River trapping summary through Julian week 9, ending March 4th. You may notice that some of the numbers changed for Coho and steelhead counts at the hatchery. I corrected some errors I had made in accounting for fish that were held over in round tanks to ripen and I had missed in a couple weeks. This is a good opportunity to remind folks that these data are always preliminary and our final counts and estimates are found in our annual reports. I always appreciate when folks notice discrepancies, so feel free to reach out if you see something..... fishy, no pun intended!

Ken Lindke
Work Cell: (707) 672-3620

"An approximate answer to the right question is worth a great deal more than a precise answer to the wrong question." - John Tukey

From: Lindke, Kenneth at Wildlife
Sent: Tuesday, February 11, 2025 11:22 AM
To: Knechtle, Morgan at Wildlife <Morgan.Knechtle at wildlife.ca.gov>
Subject: RE: 2024/25 CDFW Trinity River Project trapping summary through Julian week 1 (January 7)

Greetings from the Trinity River,

Attached is the Trinity River trapping summary through Julian week 5, ending February 4th. One of our Weaverville biologist shared a cool anecdote that I want to pass along. On February 4th a near record steelhead returned to Trinity River hatchery, a female at 89 cm (or 35" for those that prefer SI). There have only been three years since 1990 that a fish that size or bigger returned to the hatchery, with the 35-year winner in 2010 coming in at 93 cm (36.6")!

Ken Lindke
Work Cell: (707) 672-3620

"An approximate answer to the right question is worth a great deal more than a precise answer to the wrong question." - John Tukey

From: Lindke, Kenneth at Wildlife
Sent: Wednesday, January 29, 2025 4:02 PM
To: Knechtle, Morgan at Wildlife <Morgan.Knechtle at wildlife.ca.gov<mailto:Morgan.Knechtle at wildlife.ca.gov>>
Subject: 2024/25 CDFW Trinity River Project trapping summary through Julian week 1 (January 7)

Folks,

Please find attached the TRP trapping summary through JW3 (January 21). The only trapping we're still doing is at Trinity River hatchery, and spawning there is now exclusively focused on steelhead. One very late arriving fall Chinook entered the hatchery on January 14th. Otherwise it has been all steelhead which will continue into March.

Ken Lindke
Work Cell: (707) 672-3620

"An approximate answer to the right question is worth a great deal more than a precise answer to the wrong question." - John Tukey

From: Lindke, Kenneth at Wildlife
Sent: Tuesday, January 14, 2025 10:44 AM
To: Knechtle, Morgan at Wildlife <Morgan.Knechtle at wildlife.ca.gov<mailto:Morgan.Knechtle at wildlife.ca.gov>>
Subject: 2024/25 CDFW Trinity River Project trapping summary through Julian week 1 (January 7)

Hello fellow fish enthusiasts,

I hope this finds you well and optimistic about a new year ahead. Please find attached the TRP trapping summary through JW1 (January 7th). For those of you who don't know me, I have worked along side Mary Claire since 2017 and I will be taking over some of her responsibilities in her retirement, including distributing this trap summary.

With the exception of a few stragglers since Christmas, the salmon run to Trinity River hatchery has come to a close with lack luster returns for fall Chinook and Coho. Operations have shifted to steelhead spawning with a notable uptick in returns of half-pounders. Well, at least half-pounders as we define them to be less than 42 cm fork length, which doesn't necessarily mean they exhibit a true half-pounder life history.

Ken Lindke
Senior Environmental Scientist - Trinity River Restoration Program Coordinator
Klamath-Trinity Program
California Department of Fish and Wildlife - Northern Region
Kenneth.Lindke at wildlife.ca.gov<mailto:Kenneth.Lindke at wildlife.ca.gov>
Work Cell: (707) 672-3620

"An approximate answer to the right question is worth a great deal more than a precise answer to the wrong question." - John Tukey

REPORT POACHERS AND POLLUTERS: 1-888-334-2258

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