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NOAA and multiple research papers states it’s an impassable barrier to anadromous fish. In one other paper it does say bull trout may be able to pass but not salmonids, citation list is not provided.Was there ever a run of wild chinook and steelhead above the falls?
To expand a bit.NOAA and multiple research papers states it’s an impassable barrier to anadromous fish. In one other paper it does say bull trout may be able to pass but not salmonids, citation list is not provided.
This closure is really, really silly.
I sense some sarcasm?
I saw that too and had JUST checked the sockeye count.
Do you know why the decision to include those new spawning areas was made for the Snohomish but not for fish which are now able to access the Willamette above the falls because of the fish ladder? I feel like similar justifications could be made to include Coho and the expanded range of winter steelhead.To expand a bit.
Sunset Falls was a barrier (a steep slide or more than 60 degrees that drops some 70 feet) to all anadromous fish. The anadromous fish gained access to the reach of the river in 1958 when Department fish started their truck and haul operation with the goal of producing more coho (estimates are that the habitat above Sunset can produce roughly 1/4 million wild coho smolts/year.
As great bull trout are in finding ways around barriers for other salmonids Sunset Falls presents a clear barrier. The only native salmonid above Sunset was rainbows. Potentially bull trout could have gained access to that habitat the same time the rainbows did (as Ice receded from the region) and exist in the resident life form. However very few bull trout passed over the falls the first 2 decades reaching double digits annually in the 1980s. A tagging study in the early 1990s found that those bull trout that were getting trucked around the falls were all spawning in a very small section of a single tributary. The thinking is that bull trout like chinook, pinks, steelhead gained access via the trucking operation.
A major question in early planning for recovery of Snohomish Chinook past ESA listing (1999) was were the Chinook above Sunset Falls part of the listed populations. In this case the feds decided that yes they were. Considered opening that habitat to anadromous fish was mitigation for lost habitat downstream thus those fish are part of the PS Chinook ESU and covered by the listed.
Curt
Do you know why the decision to include those new spawning areas was made for the Snohomish but not for fish which are now able to access the Willamette above the falls because of the fish ladder? I feel like similar justifications could be made to include Coho and the expanded range of winter steelhead.
Treaty tribes?Different fish, different state, different situation.
Willamette basin coho seem to be doing well relative to our current shifted-baseline. Heck, they are almost encouraging a fishery for them above the falls at this juncture. The Clackamas has been a bright spot for wild spring chinook and wild coho, and they are also returning elsewhere.
It's also a different state with a different DFW. Can any one recall when Oregon closed a recreational steelhead and trout fishery to protect chinook?
ESA listings aren't determined by state agencies though. I'm just wondering what factors made them decide to include them in the DPS in one case but not the other. The coho and expanded steelhead runs are a cool fishery it just seems like a similar situation where they made a different choice. I could see it being a genetic/population separation thing maybe? Since the Coho are descended from or at least have pretty significant hatchery heritage and the native Willamette Valley steelhead are pretty unique compared to the other strains that are able to get over the falls now.Different fish, different state, different situation.
Willamette basin coho seem to be doing well relative to our current shifted-baseline. Heck, they are almost encouraging a fishery for them above the falls at this juncture. The Clackamas has been a bright spot for wild spring chinook and wild coho, and they are also returning elsewhere.
It's also a different state with a different DFW. Can any one recall when Oregon closed a recreational steelhead and trout fishery to protect chinook?
You are right, the allowable impacts for the various Federally ESA stocks are determined by the feds not the states.ESA listings aren't determined by state agencies though. I'm just wondering what factors made them decide to include them in the DPS in one case but not the other. The coho and expanded steelhead runs are a cool fishery it just seems like a similar situation where they made a different choice. I could see it being a genetic/population separation thing maybe? Since the Coho are descended from or at least have pretty significant hatchery heritage and the native Willamette Valley steelhead are pretty unique compared to the other strains that are able to get over the falls now.