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Author Topic: Coquitlam Salmon Hatchery  (Read 1336 times)

Darko

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Dave

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Re: Coquitlam Salmon Hatchery
« Reply #2 on: November 16, 2022, 12:57:50 PM »

doesn't say where the brood stock is from?
I believe a portion of that broodstock will be from residualized kokanee from Coquitlam Lake.
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RalphH

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Re: Coquitlam Salmon Hatchery
« Reply #3 on: November 16, 2022, 12:59:25 PM »

Both the Coquitlam and the Alouette have had sporadic returns of sockeye from kokanee washed over the dams. I believe Plan A is to use those as brood. Both rivers had early returning fish that summered in the lake and then spawned in fall. Shore spawners were significant.

some additional information on Alouette River sockeye: https://alouetteriver.org/projects/salmon-habitat-regeneration/alouette-sockeye-adult-enumeration
« Last Edit: November 16, 2022, 01:27:41 PM by RalphH »
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Bavarian Raven

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Re: Coquitlam Salmon Hatchery
« Reply #4 on: November 16, 2022, 03:58:52 PM »

Plenty of kokanee in Coquitlam lake (and buntzen lake too - thanks to the tunnel). The kokanee in buntzen i've caught in the past (in spring), have had eggs in them before. So it shouldn't be too hard to get brood stock.

But unless they're (finally) going to build a fish ladder into the lake, it's kinda pointless to build this hatchery. Sadly.
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Bavarian Raven

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Re: Coquitlam Salmon Hatchery
« Reply #5 on: November 16, 2022, 03:58:57 PM »

Never mind.
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RalphH

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Re: Coquitlam Salmon Hatchery
« Reply #6 on: November 16, 2022, 04:43:01 PM »

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Darko

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Re: Coquitlam Salmon Hatchery
« Reply #7 on: November 16, 2022, 05:41:27 PM »

there was info on this thread too:

https://www.fishingwithrod.com/yabbse/index.php?topic=43826.0
thanks for sharing that! Lots of great info. Is there any examples where lakes/rivers that had good runs of wild salmon but had close to 95% declines like out local rivers, actually every recover to historic levels? A level where hatchery supplement isn't necessary? What strategies would be used?
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salmonrook

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Re: Coquitlam Salmon Hatchery
« Reply #8 on: November 16, 2022, 06:35:19 PM »

Didnt realize that Kokannee were in Buntzen lake
« Last Edit: November 16, 2022, 06:43:28 PM by salmonrook »
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salmonrook

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Re: Coquitlam Salmon Hatchery
« Reply #9 on: November 16, 2022, 06:37:21 PM »

Is there any examples where lakes/rivers that had good runs of wild salmon but had close to 95% declines like out local rivers, actually every recover to historic levels? A level where hatchery supplement isn't necessary? What strategies would be used?
There is a great success story in Washington state
Elwha River had been dammed from 1911 until the National Park Service removed the dams in 2014
It was well documented and shows how all 5 species of salmon have returned .
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Darko

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Re: Coquitlam Salmon Hatchery
« Reply #10 on: November 16, 2022, 06:48:45 PM »

There is a great success story in Washington state
Elwha River had been dammed from 1911 until the National Park Service removed the dams in 2014
It was well documented and shows how all 5 species of salmon have returned .
thanks! will look into it
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salmonrook

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Re: Coquitlam Salmon Hatchery
« Reply #11 on: November 16, 2022, 10:34:59 PM »

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RalphH

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Re: Coquitlam Salmon Hatchery
« Reply #12 on: November 17, 2022, 08:02:33 AM »

thanks for sharing that! Lots of great info. Is there any examples where lakes/rivers that had good runs of wild salmon but had close to 95% declines like out local rivers, actually every recover to historic levels? A level where hatchery supplement isn't necessary? What strategies would be used?

The short answer to your question is no.

while the Elwha is something of a modern miracle there is no evidence it is anywhere near or will approach the resource level before the dam.

There have been some interesting developments or innovations; lake fertilization for sockeye particularly for the Alberni Lakes, spawning channels that provide near perfect spawning & incubation conditions and in the cases of the Fulton River/ Babine lake project and Weaver Creek actually significantly increase spawning capacity. These improvements in the face of declining ocean fertility, climate change, over fishing, predation and yada yada yada seem ephemeral sometimes producing bumper years, sometimes little effect and introducing a wholeslew of issues with cross stock and multi-species interception.
« Last Edit: November 17, 2022, 07:57:58 PM by RalphH »
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