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Normal Topic Dam busted Dam (Read 1477 times)
Deer hunter Duck Shooter
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Dam busted Dam
Jul 9th, 2017 at 7:34pm
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So found out today that my dam of at least 30 years got washed out. Went out there and the whole place looks like a waste land.
I am gutted it is fair to say. We will rebuild it in summer, to wet at the moment. Man we had some rain yesterday, over 40mm in three hours.
Will post photos if I can find a new hosting site. Cry
  
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Deer hunter Duck Shooter
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Re: Dam busted Dam
Reply #1 - Sep 3rd, 2017 at 5:08pm
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Just practicing if I can put photos up. Joined imgur. Smiley
  
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Deer hunter Duck Shooter
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Re: Dam busted Dam
Reply #2 - Sep 3rd, 2017 at 5:12pm
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Seemed to work, couple more of my duckshooting pond. Let me know if you see the pics alright.

Try this as well.

Cheers
  
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ReelLuckyBouy
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Re: Dam busted Dam
Reply #3 - Sep 3rd, 2017 at 6:56pm
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Bugger Sad
  
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XRhunter
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Re: Dam busted Dam
Reply #4 - Sep 3rd, 2017 at 7:38pm
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With big rain events becoming more common, I would recommend beefing up your spillway with lots of big rocks so another event like that can't undermine the dam wall. Make sure the spillway is wide enough, say twice as wide as it was before, again to reduce the potential for catastrophic erosion to occur.
  
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Re: Dam busted Dam
Reply #5 - Sep 3rd, 2017 at 8:11pm
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XRhunter wrote on Sep 3rd, 2017 at 7:38pm:
With big rain events becoming more common, I would recommend beefing up your spillway with lots of big rocks so another event like that can't undermine the dam wall. Make sure the spillway is wide enough, say twice as wide as it was before, again to reduce the potential for catastrophic erosion to occur.

I understand the bigger spillway and will take that advice thanks. The earth moving company at work said to dig it through solid existing ground so it has nothing to do with the dam, which is a good idea. Do you think big rocks for the hole in the dam?. Was just going to take clay from the paddock.
  
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Miroku
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Re: Dam busted Dam
Reply #6 - Sep 3rd, 2017 at 8:28pm
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back in the days of the old acclimatisation  societies we built hundreds of dams like this . get out the chain saw and cut nice young healthy willow logs about 100m in diameter . drive them in side by side like a picket fence. cut more and do the same about 2 meters downstream from the first one. as said by others, cut your spill way through solid ground away from dam site . fill in between the 2 fences with clay and earth . 6months later the willow will grow. you'll have a living dam , just prune the willow every so often 
  
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Re: Dam busted Dam
Reply #7 - Sep 3rd, 2017 at 8:49pm
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Yep, the earth movers are correct. Wait till things are dry, excavate the sludge etc out of the way till you are down to solid soil (clay in your case) Sub base in earthworks terminology. Then fill in small lifts and compact. not more than 300mm ish at a time. At least twice as wide at the base as at the top.

Miroku's idea also has a lot of merit
  
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Deer hunter Duck Shooter
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Re: Dam busted Dam
Reply #8 - Sep 8th, 2017 at 6:20am
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Cheers guys will keep you updated.
Still wet as down here.
  
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