Beaver dam at Mendenhall Glacier: Photo Bob Armstrong
It seems like a million years ago I read about beaver issues in Juneau and the group of volunteers that had stepped up to keep them from resulting in trapping. Which put me in touch with Bob Armstrong who took the lovely photos for this book and whom I introduced to Mike Callahan who arranged a site visit in 2009. Now one of the locals just gave a presentation on why beavers matter and I thought you’d want to see it too;.
Meet Juneau’s Beaver Patrol, a group of volunteers who work to ensure that beavers coexist with people and salmon. Join long-time Beaver Patrol volunteer Chuck Caldwell to learn more about beavers, Beaver Patrol, and how you can get involved!
We have entered a golden age of beaver reporting, where suddenly the list I keep of articles to write about is getting longer and longer even after I go through and ‘weed out’ all the depressing ones! I don’t know what could possibly account for this spate of good news unless it’s our festival, blowing beaver-goodwill pollen all across the nation and making people briefly smarter.
I can’t decide whether to talk about Alaska or Nevada this morning, so were doing both. Buckle up!
Surrounded by sagebrush covered hills, seeing flowing water is always good. When the small stream is surrounded by sedges and willows, and the air carries the sound of water tumbling over a beaver dam, it looks even better.
We are standing on a dirt road where Dixie Creek passes through a culvert beneath us. Carol Evans first saw this stream in 1988, when it carried no water, had no vegetation and no real streambed. She shows me the left photo above to emphasize what it looked like then.
You remember Carol Evans right? She’s the fisheries biologist advocating for beavers in Nevada that Ben Goldfarb’s book described as having the “Gentle voice of a painting instructor”.
(I believed he described me as “Not having the gentle voice of a painting instructor.” Fair enough.)
Earlier downcutting had dropped the stream between high banks. In a 1980 stream inventory, Dixie Creek was listed as an intermittent stream. But as willows and sedges returned to its banks, water flowed farther downstream and for longer periods. The water table along the stream rose and drowned out sagebrush, replacing it with more water-loving plants.
Today, the stream flows most of the year and even if it runs dry, water is still stored in the soil, among the dense, tall stands of willows. The high retaining walls of that old down cut remain, but between them is a healthy riparian area.
The biggest change came about with the return of beaver. As they dammed the stream, the impounded water collected sediment flowing downstream, sediment that raised the streambed and created deep pools. The water table rose even more, along with the streambed. Carol told me “it just takes backing off, giving it a chance, and it will grow.”
Ahh Carol, you patient wise woman, working over decades with ranchers and cattlemen in the desert to bring back healthy streams for your beloved cuttthroat trout, We salute you!
Beavers brought back other wildlife. During our visit, we saw a merganser adult swimming in front of a line of ducklings, a great blue heron and a chattering kingfisher. We listened to the call of a willow flycatcher perched in the willows. Dozens of bird species have been recorded here, species that would not be found on sagebrush flats. One survey recorded less than seven bird species in 1991, which grew to over 37 bird species in 2010. Several sensitive species have been seen here, including bats, sage-grouse, pygmy rabbits and California floaters (a species of freshwater mussel).
Whatever happens in the future, Carol will continue to come here, to walk the banks, check on beaver families, watch wildlife, and enjoy this healthy riparian area with its flowing water.
The reporter of this story, Larry Hyslop, has written about Carol’s amazing work for more than a decade. You can tell how much affection he feels for his subject matter knowing her stalwart spirit for so long. When you read an article like this it all seems peaceful, gentle and storybook-like.
Be assured that the battle to keep beaver on the landscape long enough to make a difference was a actual BATTLE and Carol just fought tooth and nail day in and day out armed with persuasion and the “the gentle voice of a painting instructor,”
Now lets go to Alaska where the similarly indomitable spirit of Mary Willson has been making a difference in Juneau since 2008.
They call themselves the Beaver Patrol, and they’re on a mission to ensure that beavers coexist in balance with people and salmon. Beavers, of course, intentionally dam streams to create their ponds. But when they block culverts in the wrong place it can cause problems, like flooding trails.
That’s what can happen in the Dredge Lake area near Mendenhall Glacier in Juneau — a network of trails and ponds connected by culverts.
One way to fix the problem is relocating or killing the offending beavers. That option was on the table well over a decade ago if other methods of managing them failed. (No one seems to remember it ever actually happening). But years ago, a group of volunteers stepped up with a plan to keep beaver dams from interfering with trails or salmon — without trapping any beavers.
Mary Willson is a long-time member of the Beaver Patrol. She said the group came together around the idea of balancing all the competing interests.
“We said, ‘Wait a minute, no — we can manage this, and we can try to find a compromise,’” she said. “We can keep the beavers, keep the habitat they make for the fish, allow the spawners to come up, decrease the trail flooding — let’s try to do it all. It’ll never be perfect, but it’ll be a whole lot better.
The trick is to let beavers keep building their dams, but make sure enough water is flowing to keep the trails from flooding and the salmon swimming through. In a natural environment, it’s easier for salmon to make their way through beaver dams — but when beavers jam sticks and logs into a narrow culvert, it can become impassable.r.”
You might remember Mary as the author of the awesome ‘Beavers of the Mendenhall Glacier book‘. She is a retired university professor of ecology that also does a trails column for the juneau paper. The book has amazing photographs by our friend Bob Armstrong – and one of these is STILL my wallpaper on the computer after more than a decade! When I share it you will understand why. I love it because of the color and the amount of hope it communicates – both in the glacial sunrise and in the sturdy nights effort by the beavers who must know FULL well that dam is going to be ‘beaver-patrolled’ by morning.
Armed with saws and gardening tools, the Beaver Patrol trudges along the trails in the Dredge Lake area, checking the dams. Here and there, they dig out parts of dams that are at risk of raising the water level too high. It’s an ongoing task — the beavers are constantly building, so they come out twice a week during the summer to keep things under control.
“We have proved ourselves to be at least as stubborn as the beavers,” Willson said with a laugh.
That’s what it takes to save beavers in this world. Patience. Good humor. And an appreciation of the stubborn.
This was recently shared by beaver-friend Bob Armstrong (Mendenhall Glacier beavers) on his Nature Alaska website. Which is very nice because I needed my kit-fix this morning. Trust me, you do too.
Yesterday’s bagging and tagging of the silent auction items was a breeze with Leslie and Deidre’s capable help. Everything should come together easily on the day, and I have great faith it will produce irresistible attraction to many gleeful bidders. Both Leslie and Deidre already bought 5 posters each and two beaver mini-journals, so the allure of those items is not in question!
Which makes it a great time to appreciate the very good work coming out of Alaska who is (as it happens) much, much smarter about the relationship between beavers and salmon than the PBS program on the very topic in question. Here’s today’s podcast on the subject of upland sloughs in glacier rivers. Listen for a great short description of why beaver ponds are safe rearing habitat for Coho salmon.
The third of a new series from the Susitna Salmon Center: The Ecology of Glacial Rivers. This segment by Jeff Davis, and voiced by Katie Kierczynski, describes how suspended sediment changes conditions in main channels of glacial rivers, and how fish have adapted to these changes.
Beavers often build dams across the mouths of upland sloughs increasing water depths, and decreasing water velocities. Water depths in sloughs is maintained by flows in the mainstem. High mainstem water keeps waters deep in sloughs; however, when water levels drop in the fall, sloughs can drain or become very shallow. Beaver dams help maintain water depths in sloughs even when flows in the main channel are low.
Thanks KTNA for a great summary. I only wish everyone was listening!
I found out this week from a friend working for the beaver patrol started by our old friend Bob Armstrong in Juneau, that Bob has retired from the patrolling but is maintaining a great website using his photos and observations over the years. It’s called Bob Armstrong’s Nature Alaska! Go check it out with caution because you just might end up spending hours lost in the wonders of his epic work.
Meanwhile festival-news gotta boost from a nice article in the Martinez Gazette yesterday. Hopefully all this will help us have a great attendance this year, even without the peddler’s fair! Double click on it to zoom in close.
Some things just shouldn’t happen. Really. And I say that as a woman with a lot of patience for ridiculous things. But some things just shouldn’t even exist. Like this, for instance.
Tuesday, the city and police held a press conference saying someone used a hatchet to chop down trees around the lake.
But Wednesday, Ben Cline with the City of Rogers said experts came in and determined a beaver or multiple beavers could possibly be to blame instead.
“We had Arkansas Game and Fish come down here and take a look, and they found some more evidence there might possibly be some beavers down here at Lake Atalanta.” The city said it’s not ruling out vandalism just yet.
The city planted thousands of trees in the park, so the cost was relatively low because they bought in bulk. But it could still cost thousands of dollars to replace those trees, White said.
Lake Atalanta was closed for a year of renovations. It was reopened with a ribbon cutting celebration on October 30th.
If our mayor posed for this photo, Jon would be deciding whether to pay my bail. There’s no question about it, because I would have created a crime. Would you like to see the evidence their ‘experts’ can’t identify definitively? You know you would, so don’t even bother answering. Here’s the head-scratching crime that leaves all of Alabama confused about the cat burglar’s identity.
Gosh, I wonder what that could be? Apparently the hatchet-wielders took down several trees that same night. They obviously were trying to show off for each other. Almost like a gang activity. Sheesh. Just so you know in advance, if holes ever show up in your trees Atalanta think woodpecker, and if all the leaves suddenly fall off, think AUTUMN.
Meanwhile the Mendenhall beavers will be at the Mendenhall library Wednesday night along with our old friends Bob Armstrong and Mary Willson. We’re so proud of the wonderful work he’s done with the beaver patrol. Our own Lory met Bob in Juneau and he showed her around. If you can’t make it yourself you should really just look at the book on the left margin. It remains my favorite collection of beaver photos and my screen saver to this very day.
The Alaska Wildlife Alliance presents its speaker series, Wildlife Wednesdays, at the Mendenhall Valley Public Library from 7-8 p.m. on Dec. 7. The presentation “Beavers of the Mendenhall Glacier Recreation Area” will feature guest speakers Mary Willson, Bob Armstrong and Chuck Caldwell.
Wildlife Wednesdays are free and open to the public. Willson, a retired professor of ecology and columnist for the Empire, and Caldwell, Vice President of Juneau Trout Unlimited, both volunteer for Juneau’s “Beaver Patrol,” a group of naturalists and concerned citizens who have been working in the Dredge Creek and Dredge Lake area for about seven years. Armstrong is a photographer, author and retired fisheries biologist.
Surrounded by sagebrush covered hills, seeing flowing water is always good. When the small stream is surrounded by sedges and willows, and the air carries the sound of water tumbling over a beaver dam, it looks even better.
You might remember Mary as the author of the awesome ‘Beavers of the Mendenhall Glacier book‘. She is a retired university professor of ecology that also does a trails column for the juneau paper. The book has amazing photographs by our friend Bob Armstrong – and one of these is STILL my wallpaper on the computer after more than a decade! When I share it you will understand why. I love it because of the color and the amount of hope it communicates – both in the glacial sunrise and in the sturdy nights effort by the beavers who must know FULL well that dam is going to be ‘beaver-patrolled’ by morning.
