Today, there are many so-called “mitigation hatcheries” in the Snake River basin that are intended to produce enough salmon and steelhead to make up for the wild fish that were lost when their habitat was blocked by dams.
Science Friday: Do these lipids make me look fat?
For most anglers who have encountered both winter and summer steelhead, it’s abundantly clear there are differences between the two races of fish. For one, they enter freshwater at different times of the year, although there is some overlap. In addition, there are physical differences. Summer steelhead tend to be more fusiform — sleeker and more firm bodied …
Rise of the Phoenix: wild summer steelhead in the Elwha River
By John McMillan, science director, Trout Unlimited Wild Steelhead Initiative A few years back, while working on the Elwha dam removal project, I donned a wetsuit for one of many snorkel surveys I conducted that summer. I had been snorkeling the main-stem Elwha, but that day – a crisp cool day in mid-October – I found myself drawn to …
What is a B-run steelhead?
Fisheries managers predict this will be a very bad year for returning B-run steelhead in the Snake River. The Snake, with its headwaters straddling the Teton Range on the Idaho-Wyoming border, is the largest tributary to the Columbia and its intact habitat and steelhead runs are vital to the overall health of Columbia River steelhead populations. Despite the high quality …
Science Friday: What is PNI about and why is it important?
Another week, another Science Friday post from Wild Steelheaders United. Last week we discussed the acronyms used in hatchery literature and management plans. Now we narrow the focus a bit to understand how these acronyms are used with one another to evaluate genetic risks associated with hatchery programs — we even offer some formulas for you to geek out on. …
Science Friday: What the heck do all those acronyms mean?
Science Friday! Another chance to dive into the weeds and define some of the jargon used when discussing, studying and evaluating hatchery steelhead. This week we focus on acronyms commonly used in hatchery management plans. Anyone who has read through a Hatchery Scientific Review Group plan or review, or most any resource management plan for that matter, has probably …
Steelhead 101: Defining types of steelhead hatcheries
Every steelhead angler is probably somewhat familiar with hatcheries. As we discussed last week, deciphering the jargon associated with hatcheries is important, but can also be difficult. This week’s terminology is more common-place, and many of you may be familiar with it already. But, just in case, let’s look at the terms used to broadly classify hatchery programs: segregated and …
Steelhead 101: Defining native, wild, hatchery and natural-origin
In recent posts we covered the basics of defining escapement and run size, and the ways these are measured by resource managers. Today, we turn our focus to the complex terminology used for describing and comparing hatchery and wild steelhead. Steelhead are typically referred to as either being “wild” or “hatchery,” but they may also be defined as being “native” …
Steelhead 101: Using snorkel surveys to estimate adult steelhead escapement
Another week, another post on how scientists and fisheries managers measure steelhead escapement. Last week, we described redd counts and why they are an important tool. This week, we review snorkel surveys. Snorkel surveys entail divers swimming in the river and visually counting adult steelhead. Like redd counts, snorkel surveys do not cover an entire river, but rather break …
Re-opening the Skagit River: More Work to be Done
For years, the story of the Skagit River steelhead fishery has been one of decline and loss. But that story is on its way to becoming one of renewal. The submission of a Resource Management Plan by WDFW has breathed new life into the concept of an open catch and release season on the Skagit. While this is a …