Conservation

Mapping Alaska’s Steelhead Habitat

Man in river ducks under runnel of fallen branches and logs
The never-ending logjams are like gates the river has placed to keep at bay those of lesser faith and conviction. When coupled with the seemingly impenetrable growths of Devil’s Club lining its length, it begins to feel as if the river doesn’t want you here and is actively trying to discourage further upstream travel. But you press on, because conservation of these fish and their habitat is worth the blood you might leave behind.

A visual update on our work to secure protections for steelhead in southeast Alaska.

Entering its fifth year, the Alaska Fish Habitat Mapping and Community Science Project is an ongoing effort by Trout Unlimited and Wild Steelheaders United staff and volunteers to expand Alaska Department of Fish and Game’s (ADFG) Anadromous Waters Catalog (AWC) by documenting previously unknown anadromous waters and species in Southeast Alaska. 

As we’ve shared previously in our short film, Anadromous Waters, this work is critical for not just documenting and adding stream miles and species to the AWC, but also adding protections for all streams and species by accounting for the variation in migration and spawn timing, along with varied habitat use. 

During the 2022 field season, the project engaged 18 volunteer observers over 10 survey days and conducted 4 additional surveys without volunteer assistance. These surveys resulted in 16 AWC nominations for species and/or waters additions, with a net total of over 73,500 feet (nearly 14 miles) of anadromous habitat in 20 water bodies including two new steelhead streams! With the 2022 nominations, this project has added over 356,000 feet (over 67.4 miles) of waters/species to the AWC since its inception in 2018. 

What follows are some of the words and images that first appeared in the Umpqua Feather Merchants 2021 product catalog (“Indexing the Tongass: Signature Tyer Mark Hieronymus”). We’ve added some additional detail and photographs in this expanded version. We at TU thank Umpqua for all they have done to support steelhead and salmon habitat in Alaska and the Lower 48. 

Bearded man looks at his equipment sitting on dock next to plane
In order to fly off into the wilderness and look for steelhead in places they haven’t been officially documented before, you need to pack methodically, and with a host of “what-ifs” in mind. Satellite communicator, data collection tools, bug dope, bear protection, wilderness first aid kit, food, water, emergency survival gear – all the items necessary for a trip to go right in an environment where things occasionally go very wrong. When the plane drops you off at the saltwater mouth of a remote river and heads back to civilization, there’s no walking back to the truck to grab forgotten gear.
View from behind pilot, looking over the water and evergreen trees
After months of poring over all available data, weeks of survey planning and site selection, packing, unpacking, repacking, second-guessing…the Game, as they say, is now on.
A footprint in sand next to water
On the surface, the task is a deceptively simple one: walk the river from its mouth to the furthest upstream point a steelhead could conceivably be found. There are no roads, nor convenient access points. Fresh tracks on the tideline and conspicuously bear-shaped trails through the thick riparian growth serve as a constant reminder that you are a guest in this house.
Man walks on snow next to river
Late spring snowpacks are the beauty and the beast of these small, coastal river systems. The snowmelt, bone-cracking cold, is the diurnal pulse of the river, a coded signal to the fish that conditions are right for their return. Occasionally, the deep snow can make travel conditions more akin to a black-diamond ski run than a steelhead river.
Man in river ducks under runnel of fallen branches and logs
The never-ending logjams are like gates the river has placed to keep at bay those of lesser faith and conviction. When coupled with the seemingly impenetrable growths of Devil’s Club lining its length, it begins to feel as if the river doesn’t want you here and is actively trying to discourage further upstream travel. But you press on, because conservation of these fish and their habitat is worth the blood you might leave behind.
Man with backpack stands looking at river
The very obstacles making these watersheds difficult to move about in – remoteness, challenging terrain, lack of roads, logjams, hip-deep snow – are the same features that make them amazingly fecund “fish factories”, prime habitat for salmonids. But with most known steelhead streams in southeast Alaska hosting fewer than 200 total returning adults annually, finding these elusive creatures during their roughly 3-week-long window of availability makes looking for a needle in a haystack seem like child’s play.
Man lays on mossy tree that has fallen, touching the stream below with his hand
If your hunch is correct and you successfully locate a steelhead in the miles of river, there’s a lot to do before victory can be declared. Irrefutable documentation of the species in that location is necessary – “I’m pretty sure I saw a fish” will not suffice. The best way to get official evidence is to photograph the fish in situ, and sometimes, that involves going out on a limb.
Man in wetsuit snorkels in cold water
If the bank (or limb) -bound observer is unable to get clear pictures of the target species, the site is marked with a waypoint and the upstream journey continues. If additional data documenting use of the habitat by steelhead is not collected by the upstream end of the survey, it’s time to go in after them. While jumping into 38-degree water loaded with hazards isn’t most folks’ ideal snorkeling situation, a Steinbeckian paraphrase comes to mind: “Sometimes you gotta do what you gotta do.
Under water shot of steelhead hiding next to a log
The goods. The receipt. The evidence.
Underwater view of a steelhead next to a stick
In order for a river to be recognized as steelhead habitat, Alaska state law requires at least two steelhead to be documented in the same survey event as using the habitat in question for spawning, rearing, or migration.
Notebook, backpack, and electronic GPS device
When all is said and done, it all comes down to the data. Check your GPS to be sure you entered the waypoint, then write down the coordinates by hand to be certain. While all you really need is one good fish picture for I.D. purposes, additional pics are insurance, and photos of the habitat in which the steelhead were encountered serve to further our knowledge and understanding of these secretive, special fish. When you get back to the office, tired and sore from your miles in the American Salmon Forest, there is yet more work ahead. Data needs to be transcribed from your ratty field notebook, geospatial data must be downloaded from your devices to render the maps which help tell the story of steelhead habitat use, a tale the fish themselves are unable to tell. All these data need to be distilled into an airtight case for the state to include steelhead in the assemblage of the river and afford them the conservation measures they deserve. Then you go to sleep, get up, and do it all over again.

Photo Credits, in order of appearance: Duck – Josh Dupelchian; Nab-Plane – Josh Dupelchian; Pilot – Steven Brutger; Footprint – Steven Brutger; Snow – Mark Hieronymus; Duck – Josh Dupelchian; Fallen-Tree – Josh Dupelchian; Hang-Over-River – Alan Corbett; Snorkle – Sam Roche; Under-Water – Mark Hieronymus; Under-Water-2 – Mark Hieronymus; Notebook – Steven Brutger.