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Thread: Removing Beaver Dams

  1. #1
    Senior Member Dirtman2007's Avatar
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    Removing Beaver Dams

    Well today I was asked if I wanted to remove a beaver dam that is daming up a creek up upstream from where I'm working.

    I was told the dam is about 5' tall, 5' wide, and is backing up about 3 acres of water which is killing all the trees and making a flipping mess. We need the water to fill up a lake up we just finished up working on. Seems like a good way to do so.

    I was pondering on how to bust the dam though. It's a long way through the woods and I would have to go stump jumping with the mini excavator to get back there and would absolutly hate to get bogged down and stuck in the middle of the swamp.

    My next option is letting one of the neighbors blow it up with the little beaver dam bombs he makes.

    The fellow I'm working for would reather me go in and break it with the mini, But I sure would like to see it get blown up! The fellow works for the rock quarry and is very good with blowing things up from what I'm told.

    any other suggestions besides getting down and dirt by removing it by hand?
    Last edited by Dirtman2007; 10-13-2008 at 09:52 PM.
    Chris

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  2. #2
    Senior Member dirt digger's Avatar
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    those beaver dams are a lot stronger then you might think...with a lot larger logs/trees then you might imagine are in there....your mini-ex might take a good while to get it done...i vote for dynamite
    Civil Engineer EIT
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  3. #3
    Senior Member Dirtman2007's Avatar
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    Quote Originally Posted by dirt digger View Post
    those beaver dams are a lot stronger then you might think...with a lot larger logs/trees then you might imagine are in there....your mini-ex might take a good while to get it done...i vote for dynamite
    Oh I know, beavers will amaze you with their abilities to dam up water as good as they do.

    I'm looking towards this.
    http://ca.youtube.com/watch?v=sl7gkB...eature=related
    http://ca.youtube.com/watch?v=-iM5Q7zX6Ho


    I'll ge more info tomorrow.
    Chris

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    Dynamite the Beaver Dams

    The bad thing about digging out beaver dams is you pile all the mud and brush right where they want to rebuild the dam. It makes it ALOT eaiser on them rebuilding the thing. That's why I like Dynamite, it scatters the dam everywhere. Don't kid yourself, they are going to rebuild it. The Dynamite just makes it harder on them. If it is a good size dam get a pry bar about 5 feet long and punch a hole down as far as you can drive it. This will get your Dynamite down in the mud and you can blow the hxll out of it this way. Make sure about EVERY 6 INCHES to wallow the hole out before going any deeper with the bar. This is so your bar don't get stuck in the mud and you have to leave it.
    Last edited by CM1995; 10-14-2008 at 08:18 AM. Reason: Disguised profanity edited

  5. #5
    Senior Member Deere9670's Avatar
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    ahh beaver problem eh, well like he said, you can rip it out, but it will be built up in a day or so depending on how many beavers! Heres the illegal way to handle it: take some of the damn out, just enough to let some water through, then sit up stream of it and wait for the beavers to feel the water level go down, then they will swim out to fix it, then thats when mr. winchester comes into play. Be patient, and more will keep coming! As for the legel way, look into a trapper, but just removing the damn will onley let water flow for a couple days!

  6. #6
    Senior Member Dirtman2007's Avatar
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    Quote Originally Posted by Deere9670 View Post
    ahh beaver problem eh, well like he said, you can rip it out, but it will be built up in a day or so depending on how many beavers! Heres the illegal way to handle it: take some of the damn out, just enough to let some water through, then sit up stream of it and wait for the beavers to feel the water level go down, then they will swim out to fix it, then thats when mr. winchester comes into play. Be patient, and more will keep coming! As for the legel way, look into a trapper, but just removing the damn will onley let water flow for a couple days!
    He said over the last few years he's shot 20 of them. Dern things just keep comming back. Mr pipe bomb needs to be dropped down in their little hut. Man they are killing acres and acres of good timbers. The mostqitos are horrible too!

    They've looked into trapping them too, $100 for the fellow to come out and $80.00 fot every one removed.
    Chris

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    Killing the Little Bxstxrds

    He's right about shooting them when you dig the dam out. The water level protects the entrance to their house, when it starts dropping someone is going to come investigate. If you keep shooting them I don't Know if more will come or not. I always trap them out before I dig the dam out. That way, Problems Solved.

  8. #8
    Senior Member stumpjumper83's Avatar
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    Wow i guess fur prices really are down. It used to be that they would be pounding on doors for you to give them permission to trap. Yeah tearing it out with an excavator, be carefull. Get the excavator stuck in the muck tearing it out and go home for the evening with the machine stuck... watch out. Them little buggers might use the minni as part of the new dam, or build the new dam just bellow the stuck mini.... That would be funny....

  9. #9
    Senior Member fireman050's Avatar
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    i vote for homemade explosives

  10. #10
    Senior Member HeyUvaVT's Avatar
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    we tried using our Tak TB175 to take out a damn smaller than the one you are describing...and they had it rebuilt in about 3 days...the next time we blew it sky high...and they rebuilt it in about a month...either way you do it chris....someone has to kill them...all of them...they MUST ALLLLL DIIEEEEEEEE!!!!

    okay...okay...im good.....just a little jumpy about the beavers....kinda like bill murray with the ground hogs in Caddy Shack.....

  11. #11
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    Old Timer down the street always said you had to get rid of beavers before you get rid of the dam. He had two methods Trapping - less effective or the other method.
    This was years ago before pollution laws & thoughts. He would take a few empty gallon bleach bottles and put roughly a cup of high detergent oil in each. He would then dist. upstream. By tossing out in water with no cap on the bottles would bob up and down and gradually release oil until they sank. He said beavers are not hurt , but it bothers there skin and will move out within a week or two.
    He also said it does not take many, one or two in a small pond
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  12. #12
    Senior Member PSDF350's Avatar
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    Like has been said the only way to get rid of the dam, is to first get rid of the beaver. Once the beaver are gone it is just a simple matter of getting the water to flow, once flowing, the hydrualics of the water will take care of the rest. One thing about beaver dams is they are not water tight they take alot of work to keep them working. So get rid of the beaver first. But remember next spring when upstreams young move out to find new homes that spot just might appel to them.

  13. #13
    Senior Member dirt digger's Avatar
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    if you want me to take a trip down there i can....up here i have pretty good luck scaring the beaver away from me...i'm sure it would be the same down south
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  14. #14
    Senior Member tonka's Avatar
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    Quote Originally Posted by dirt digger View Post
    if you want me to take a trip down there i can....up here i have pretty good luck scaring the beaver away from me...i'm sure it would be the same down south
    please enlighten us on your methods
    Live the Low Life, Put it in the dirt!!

  15. #15
    Senior Member Dirtman2007's Avatar
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    Quote Originally Posted by tonka View Post
    please enlighten us on your methods
    We might not want to know! LOL

    Here's what we have. I'll have to clear a path in with the mini excavator to get back there. Probably 200' back in the woods, all good ground until I get to the dam then it gets ify. The beaver dam is bigger than I thought, looks to be atleast 100+' long, 3'-4' wide and 5' tall. mostly bulit out of stick ranging from 1-2" in diameter.

    Did not want to venture out there too far as I had already had the **** scared out of me with all the snakes that were everywhere

    Then I heard somthing rather large moving around in the tall weeds so I snapped three pictures a got the hell out of the swamp!


    Here is the lower pond, there are 2 more upstream.


    I'm thinking that busting one end with the mini would be the best bet. then when the water darins down he should be able to see the beavers and knock them off one at the time. Maybe I can get him to make one pipe bomb to blow up the other end, sound like too much fun not too!
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    Chris

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