Winter steelhead season is winding down, if not over in some rivers. Time to regroup and prepare for summer runs! This Friday we have a science two-pack for you. First, a bit of cautious optimism. More steelhead are predicted to return to the Columbia River basin this year than in the past two years. Last year the upriver …
A thorny challenge on the Deschutes River
Trout Unlimited is working to ensure the success of the Pelton-Round Butte Fish Passage Program and conservation of lower River angling opportunity If you’re a trout or steelhead angler in Oregon, you’re probably at least somewhat familiar with issues related to fish passage and native fish on the Deschutes River. Trout Unlimited has been working for the past several …
Science Friday: Behavioral Thermoregulation
Most steelhead anglers know that the family of fishes called salmonidae (trout, char, salmon and whitefish) are highly sensitive to water temperature and quality. These fishes require cold, clean water to thrive. But what happens to them when water temps become unfavorable? As you might expect, they seek out places in the river that regain cool water — now often …
2017 – a Bad Year or Part of a Trend?
Ocean conditions are vitally important for wild steelhead runs — probably every steelhead angler knows this. But what does that phrase really mean? The ocean is a massive and incredibly complex system, and there are many factors out in the big blue that can influence steelhead in any given year. That is why it is so difficult to parse out …
Science Friday: More on summer and winter steelhead genetics
By John McMillan Two weeks ago we reviewed a study by Prince et al. that discovered a single gene differentiated steelhead which return immature (referred to as pre-mature in the study) to freshwater (i.e., summer steelhead) and those that return in a mature or relatively mature state (i.e., winter steelhead). Anglers have long known there is something inherently different about …
Science Friday: Warm water’s influence on the speed of upstream migrating steelhead
The dog days of summer are fully upon us. The predicted forecast for adult summer steelhead returning to the Columbia and Snake River basins is now, unfortunately, shaping up to be worse than expected (and it was already very low). However, it can be difficult to determine how accurate this forecast actually is because at this point in time the …
Science Friday: Steelhead in hot water, and what it means for catch-and-release
As predicted for summer steelhead in the Columbia River and many other watersheds in Washington and Oregon, something has happened to the fish. There are precious few of them this season. But it’s important to remember that ebb and flow in population size is part-and-parcel with these fish — and for all salmon in general. We likely pay more …
Stand Up For Clean Water
When anglers think of steelhead water, we tend to think of big, muscular rivers like the Skagit, Umpqua and Eel. We don’t usually think of tributary streams small enough to step across, or even that go dry at times. We should. Such streams are very important for steelhead, particularly for spawning and rearing. In California, for example, 64 percent of …
Science Friday: Hitch-Hiking Smolts
Last week we talked about the importance of spill for out-migrating kelts and smolts in the Columbia Basin. Increasing spill is only one method employed to enhance downstream survival of smolts. As early as the mid-1950s smolts were loaded onto barges and moved downstream past the dams through the lock system. While fisheries managers experimented with this tactic early on …
Put fish first this summer in the Columbia
It’s hard to ignore the dismal forecast for this summer’s steelhead return to the Columbia and Snake Rivers. Just how bad is it? Well, this year’s wild and hatchery summer runs returning past Bonneville Dam are forecast to be the lowest in the past 34 years. Predictions for all stocks look bad, but in particular the later arriving and …