Because the beaver isn't just an animal; it's an ecosystem!

Month: November 2008


Okay. I give up.

I try to keep the focus on beavers here and not on the absurdities of my life, but this came into our home recently and has been making typing very challenging.

Did you ever have one of these? I believe they are also called “time-eaters”, “furniture destroyers”and “finger-biters”. They have all the charm of a new born baby with agile long legs and very sharp teeth. We are in the early stages of acceptance a la Kubler-Ross. First there’s denial that your life has forever changed and nothing will be the same again. I briefly touched the Anger stage this morning when my foot stepped in something unmentionable on the carpet.

What does this have to do with beavers? Well McKenzie was a shelter puppy, her litter mates were all put down and came to us so young she still had part of her umbilical cord attached. She arrived with what our vet called a “heavy intestinal load” of worms, coccidia, and giardia. I just looked them up and was reminded of giardia’s “nickname”.

BEAVER FEAVER!

No she didn’t get this from a beaver, and when people get giardia from beaver ponds it is because people have put it into the water first. Way back in the early days I was cautioned by our beaver friend Mike Callahan about Waterboards and their fear of Giardiasis. It was one of the first things I researched before my days on the subcommittee. A history of misinformation has sometimes blamed beavers for this disease, instead of realizing that they are carriers of our (and our pets) infections. Kenzie will ride through the proper treatments and modern medicine will set her straight very soon, but in the mean time I just had to smile at the fates.

When I first saw the beavers I was with my adult lab Calypso. She would lay on the bridge patiently while I filmed strange furry things in the water that were not her. She was a gentle soul, a beloved companion, and the most popular patient at any pet clinic. In her younger days she loved to fish by standing in a shallow school of minnows and leaping upon one that caught her eye. Caly died this spring after a very long and lucky life, and Kenzie will become the new friend to the beavers eventually.

To get things started on the right foot (paw?) she found the beaver chew on the porch yesterday and decided to make a few gnaw marks of her own. So far so good.


“A photograph was taken during the original construction of the Channel Improvements in the late 1990’s and has been publicized recently in a Gazette news paper article and on various websites. It appears some residents in the community questioned whether the buttressing sheetpile project was necessary”

Just in case you are worried that the historic photo reported in the LA Times caused a crisis of confidence for our intrepid city entourage, be comforted that there is another resolution on the calendar for Wednesday’s meeting. This is the “Willing All Suspicions Silenced Order” otherwise known as the “WAS SO!” amendment. The city will vote to say that despite the chilling effect of evidence to the contrary, residents should continue to believe that they made the right decision.

This follows the “This is an emergency resolution on October 1st, and the “It’s still an emergency resolution on October 15.” It goes on to say

“Staff believes the photo show an un-engineered sheet pile wall along a short section of the Bertola wall. This work was apparently done by City maintenance staff during the original channel construction. No records of the design of this section of the wall or supporting structural calculations have been found.”

Yes we know about the four pieces of sheetpile. Staff had access to a pile driver? And can someone explain “un-engineered” to me? Do you mean the city engineer was never even consulted? It gets better:

“During our recent construction the City Inspector and the City consulting biologist observed and photographed sections of the Bertola wall showing no foundations. in addition the property owner has reaffirmed that he believes the Bertola wall was built without a foundation.”

Based on the photo in question it would be difficult to “observe and photograph” the foundation since it would be underneath the collapsing bank. As for the beliefs of the property owner, let me not question anyone’s faith. Just tell me one thing, does this mean you can’t see the footing in the picture? What do you think that square ledge is at the bottom?

“The recommendation to construct the project was based on evidence of significant recent erosion along the east bank of Alhambra Creek between Escobar Street and Marina Vista and the observation of recent cracks in the Bertola Restaurant retaining wall. A geotechical engineer hired by the property owner and one hired by the City drew the same conclusions that building. retaining wall and property along this section of the creek were in immanent [sic] risk of damage or failure this winter.”

Perhaps this isn’t a typo at all. Immanent is defined by websters as “in-dwelling” from the latin “en manare” meaning to remain within. Dictionary.com adds the enviable philosphical definition “Taking place within the mind of the subject and having no effect outside it.” (or relevance to?) To translate: don’t be confused by the notion that erosion on the east bank is irrelevant if the 1999 photo shows there was no bank there to begin with. Pay no attention to the crack in the wall, which is visible, and never mind about that large tree there in the photo right at the crack which is no longer standing. It would be foolish to imply that roots had anything to do with this.

While an emergency may not have been imminent, this decision was Immanent. It will remain despite all evidence questioning its wisdom.

WHEREAS: the city of Martinez has heretofore entered into a contract with Hess Concrete Construction Co. Inc, for certain work on the Emergency Creek Bank Stabilization, Alhambra Creek Escobar Street to Marina Vista an the Public Works Director has recommended acceptance of said work of improvement as completed in accordance with plans, specifications and approved change orders and correction lists, and in accordance with the final inspection of the Deputy Director of Public Works.

NOW THEREFORE BE IT RESOLVED, by the City Council of Martinez that said work is hereby accepted as completed on this 19th day of November.

Okay. I agree. It’s completed. Explain to me why you even had to talk about the photograph to establish its doneness? The report is authored by Don Salts and Tim Tucker. I’m going to go out on a limb and say that Mr. Salts authored this resolution to defend the good name of his immediate boss whose shoes he plans to fill one day soon. This is a CYA resolution, because regardless of the grainy photograph, everyone who was on staff 9 years ago should remember that this bank had no soil and just an exposed wall. The truth is that I wasn’t even going to bother with the second photograph because this was such a DONE, COMPLETED, OVER deal. Now the city has prompted me to march down and get the one taken directly opposite the crack, so I have something exciting for Share-and-Tell Wednesday evening.


Got this email tonight from our intrepid photographer and wildlife VP of Worth A Dam:

We went out tonite and got a great show. all 4 kits appeared, 1, maybe 2 yearlings and DAD. He was under the bridge eating apples, so we got a good look and were sure. No Notch. Someone came out on the bank near the first dam and took a big branch. Came by just in time to see them dragging it off. By the way a whole tree is missing near the dam. The one that Moses filmed a beaver cutting down when we were all there earlier this year. Maybe we should consider wrapping some of the bigger trees near the dam. Have you seen their 2nd lodge lately?It sure seems to have grown even in the dark I can see LOTS of new stuff on top. I’ll go out this week and photograph it. I took these photos.
Cheryl Reynolds
Now that’s a bit of comfort, as we hadn’t seen the parents in a while. Everyone, including the yearlings, are still around and that’s worth a sigh of relief.
Woodpecker Update:
East Bay Express has a hilarious take on the issue, and a smart response from an architect reader that should make Rossmoor builders hang their heads.

Last night I was looking up at our ghostly full moon spectacle and wondering what it was called. Everyone knows about the Hunter’s moon, and the Harvest moon, so what was this? Turns out this second moon after the fall equinox is named after our favorite thing: “The Beaver Moon”. The Farmers’ Almanac says in its unpoetic way that it is so named as a reminder to set our beaver traps before the ponds freeze, so we’ll have fur for the winter. Other kinder interpretations suggest that it is the time for beavers to get busier and lay up food before the ice sets.

I’m thinking the full beaver moon would be a great time for an evening beaver festival. Hot cider and christmas lights along the creek to visit the dams in succession. Maybe a start to the shopping season in some downtown boutiques. Night lamps on creek activity and maybe some folk music and a bonfire. Sounds good to me. Happy Beaver Moon everyone!

Oh and woodpecker update: Our feathered friends have cracked the media barrier and made Gary Bogue and the Chronicle today, channels 7 and 5 last night, and the LA times and CC Times. Apparently now there’s discussion that they “might just kill a couple to scare the others away”.

Huh?

How will killing a couple scare others away? Will this be done in a public forum where all the woodpeckers will be made to watch? How will the not-shot birds find out what happened to their compatriots? Twitter? Honestly, do they plan to post the severed red-heads on pikes all around the border to ward off unwanted visitors?


When settlers first touched the shores of North America, there were an estimated 60 to 400 million beavers. Think about that, over two million beavers in every state, which means they were in every creek and lake and stream they could reach. Their fur was so desirable and their habits so easy to predict that by the early 1900’s hunting had dropped the population as low as 100,000. In many parts of North America there were no beavers at all.

That’s a dramatic change, but lets think for a moment about what life was like when all these furry wetlands engineers scurried around the continent. They terraced every meandering creek with dams, caught the water and held it for drier times, and slowed down periods of high flow. In fact the arid western territories weren’t so arid when there were beavers to control the water. The creeks were shallower and changed their banks more often, moving the rich deposit from one side to the other. The soil along the banks made rich habitat for trees to grow healthy and green. Just like in Egypt along the Nile, the rich sediment allowed for hugely productive crops. I have even heard that our pioneers could never have been as successful if beavers had not conditioned the soil for them.

We may not really think about it, but creeks are changing things. The move their path, they meander, they develop. As America grew more populated, we stopped allowing our creeks to change. Creeks were borders, boundaries and markers. That was someone’s land they were meandering onto or away from. We may have continued to let our cattle roam but we started to put our creeks in fences. Riprap, concrete walls, steel piling. We narrowed the options for our creeks, and nearly exterminated their caretakers.

So what happened? Creeks are changing things. If the can’t meander from side to side, that doesn’t mean they don’t evolve. Since they can’t go out they go down. Undercutting began across the continent. Our channels grew deeper and faster and the exposed soil thinner and harder to support vegetation. When I walked our Alhambra Creek with the fluvial geomorphologist Laurel Collins, she pointed out several examples of undercutting in our bed. Development gave the creek no where to go but down, and that means that the flow gets steeper and faster in hard weather, hence the flooding we see every few winters.

When a creek undercuts it is harder to store water, harder to replenish soil and grow crops. Drier areas begin to suffer and wetter areas get overwhelmed. Animals that depend on the creek are also affected, and the game you might have hunted to put food on your table moves farther to find water as well. I started thinking more seriously about this when I read Eric Collier’s book “Three Against the Wilderness” about re-introducing beavers in Canada. He wrote in particular about a complicated waterway that fed several farms. Without beavers to keep the water in a series of dams, the entire area was subject to draught. He hoped anxiously that when they returned they would be able to keep the water during high flow and eek it out through the summer months.

This confused me because our dams wash out so easily during high flow. A little review has shown that any time we receive more than a half inch of rain over 24 hours we’ve had a full or partial washout. So how did these Canadian beavers manage their magic? Are our beavers just slackers, or not as talented at dam maintenance?

No. The answer came from a conversation with Igor Skaredoff who attended the beaver conference in Oregon where they are reintroducing beavers to increase the salmon population. They noticed the dam washout problem as well and decided that beavers need a little structural help to keep the water back. They provide reinforcement to dams, and a foundation starter. Why? Because the landscape has changed since the 1900’s and the writing of Eric Collier’s book. Undercutting has made streams faster and deeper, and beavers, hard workers though they are, can’t keep up.

As in so many ways, mankind has made their work harder. Now that streams are deeper and faster there is less rich soil deposit, and that means less treescape, and less habitat for beavers to feed. At the very time when humans need their dam building to eek out water in drought and minimize water during high flow, our creeks are less able to take care of their needs, and less hospitable to their efforts.

American history is inextricably linked to the beaver. We may as well figure out how to get along.

BEAVER FESTIVAL XVI

DONATE

Beaver Alphabet Book

TREE PROTECTION

BAY AREA PODCAST

Our story told around the county

Beaver Interactive: Click to view

LASSIE INVENTS BDA

URBAN BEAVERS

LASSIE AND BEAVERS

Ten Years

The Beaver Cheat Sheet

Restoration

RANGER RICK

Ranger rick

The meeting that started it all

Past Reports

November 2008
M T W T F S S
 12
3456789
10111213141516
17181920212223
24252627282930

Story By Year

close

Share the beaver gospel!