Such good news - for those looking for a relaxing hobby fly fishing is an excellent sport to get into. You spend all day standing in a river trying to out smart some fish and trout are exceptionally beautiful creatures up close.
There is similar work going on to restore fish passage underneath I-90 near Issaquah, Washington. Although in that case, the part of the streams that's currently inaccessible is less than a mile for most of them, and 2 miles for one of them. It's a major undertaking to restore a stream bed or channel underneath the interstate.
This will benefit Kokanee Salmon, a kind of salmon that spends all its life in fresh water and does not migrate to salt water like most salmon.
In Lewis Creek, they currently have access to only 1/2 mile of the creek, but in 2021 there were about 1000 of them returning (from Lake Sammamish) to spawn.
I remember in 2018 there were only 18 Kokanee counted spawning from Lake Sammamish.
"A striking ebb in the number of Kokanee salmon in Lake Sammamish, just east of Seattle, has officials worried that extinction is around the corner.
Five years ago, more than 18,000 of the unique freshwater species of sockeye returned to spawn in Lake Sammamish tributaries. This past year, only 19 were counted.
While a number of possible factors are likely to blame for the dramatic drop in the population, King County environmental affairs officer David St. John said warm lake temperatures in the summer from 2014-16 was likely the largest driver.
Lake Sammamish kokanee life cycles are measured in roughly three-year cycles. Kokanee migrate from Lake Sammamish to tributary streams where they spawn. The resulting offspring, juveniles known as fry, then move to the main lake where they remain for just under three years before returning to the streams to spawn, continuing the cycle."
Silly question but if I remember correctly salmon go back to reproduce where they spawned. This suggests that once access is cut up a river, that location loses its salmon (can’t get there, so they don’t reproduce?)
Do they artificially reintroduce the salmon once access is restored or does that “neighbourhood” of salmon somehow survives and keeps trying every year ?
Excellent work as expected from NOAA's Habit Conservation team. These fish ladders are such an excellent investment in the future of our inshore fisheries, I wish it were easier to express that to citizens and corporations,
My lab does fish population monitoring around the Bay, including the mouth of Alameda creek, so I suppose one entry in the "good problems to have" is another potential spot where we could start catching steelhead and chinook, given that we have an extremely limited allowance.
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[ 3.2 ms ] story [ 35.6 ms ] threadI'd like to live in a world where a company picking up after itself isn't "refreshing"
This will benefit Kokanee Salmon, a kind of salmon that spends all its life in fresh water and does not migrate to salt water like most salmon.
In Lewis Creek, they currently have access to only 1/2 mile of the creek, but in 2021 there were about 1000 of them returning (from Lake Sammamish) to spawn.
"A striking ebb in the number of Kokanee salmon in Lake Sammamish, just east of Seattle, has officials worried that extinction is around the corner.
Five years ago, more than 18,000 of the unique freshwater species of sockeye returned to spawn in Lake Sammamish tributaries. This past year, only 19 were counted.
While a number of possible factors are likely to blame for the dramatic drop in the population, King County environmental affairs officer David St. John said warm lake temperatures in the summer from 2014-16 was likely the largest driver.
Lake Sammamish kokanee life cycles are measured in roughly three-year cycles. Kokanee migrate from Lake Sammamish to tributary streams where they spawn. The resulting offspring, juveniles known as fry, then move to the main lake where they remain for just under three years before returning to the streams to spawn, continuing the cycle."
Do they artificially reintroduce the salmon once access is restored or does that “neighbourhood” of salmon somehow survives and keeps trying every year ?
Why was a 'Bay Area foundation' referenced yet left nameless? I never understand the logic behind this convention..