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Silting in BR Pond Help
Posted on 12/3/18 at 9:07 pm
Posted on 12/3/18 at 9:07 pm
Our neighborhood pond in BR has been silting up over the years. We get runoff from two places, and we have been dredged once maybe 20 years ago. I assume the most of the silt is from high rainfall events, and not routine runoff. There is also a contribution from leaves and organics. The pond depth is probably down to 2-4' throughout. The area is 10-15 acres.
Does anyone have any advice / thoughts on inexpensive solutions for dredging, weirs, microbiological, any other solutions?
Does anyone have any advice / thoughts on inexpensive solutions for dredging, weirs, microbiological, any other solutions?
7
Posted on 12/3/18 at 9:24 pm to MikeD
quote:
The area is 10-15 acres
Damn. That would be a huge job to dredge. I don't know of any way to curb sediment though. Unless you can get someone upstream to build a pond and catch it before it comes to yall then no luck.
Posted on 12/3/18 at 9:57 pm to MikeD
That’s not that big to dredge from what I’ve done, but then again to get everything into an inland pond it’s a pain in the arse.
Your biggest issues will be where to put the material and what size dredge the HOA is willing to pay for.
It will be expensive regardless of what size equipment comes in just Bc it’s a lot of material to move.
Your biggest issues will be where to put the material and what size dredge the HOA is willing to pay for.
It will be expensive regardless of what size equipment comes in just Bc it’s a lot of material to move.
Posted on 12/3/18 at 10:51 pm to eng08
Just to give you an idea, that’s anywhere from 50-75 thousand yards of material, and I am basing that off of the 10 acre estimate. That’s dredging the hole pond 3ft. Or as I like to think of it, 3500-5000 dump truck loads.
Am I wrong in saying that this is probably a half to 3/4 of a million dollar job? Is 3ft to much? Maybe dredge 1ft? That’s still like 16/18 thousand yards of material that would have to be hauled off
Am I wrong in saying that this is probably a half to 3/4 of a million dollar job? Is 3ft to much? Maybe dredge 1ft? That’s still like 16/18 thousand yards of material that would have to be hauled off
Posted on 12/4/18 at 7:07 am to MikeD
Unless you have a small river going into the pond, I'd guess that most of it is organic material. I have no idea on the solution for you though.
The sediment should be forming a delta by the two major runoffs.
I'm also thinking that OP it was not as deep as OP thinks he remembers? 1 ft of sediment in a 10 acre pond in 20 years is a heck of a lot of material transfer.
The sediment should be forming a delta by the two major runoffs.
I'm also thinking that OP it was not as deep as OP thinks he remembers? 1 ft of sediment in a 10 acre pond in 20 years is a heck of a lot of material transfer.
This post was edited on 12/4/18 at 7:08 am
Posted on 12/4/18 at 7:21 am to eng08
OP you have two realistic choices here
1) drain it , let it dry out, excavate it, and haul the material out
2) enjoy your shallow pond
In all honesty a dredge is a fools errand in this situation, if you try to haul wet material out increase the truckloads and cost exponentially.
1) drain it , let it dry out, excavate it, and haul the material out
2) enjoy your shallow pond
In all honesty a dredge is a fools errand in this situation, if you try to haul wet material out increase the truckloads and cost exponentially.
Posted on 12/4/18 at 7:42 am to cave canem
quote:
) drain it , let it dry out, excavate it, and haul the material out
That's a great idea. You could push all the organic material into a pile and burn it right?
Posted on 12/4/18 at 8:15 am to MikeD
My folks went through this at their lake in Oak Hills.
hit me up and I can give you their contact. It is a process with numerous permits, there will be a fish kill, it will be expensive.
hit me up and I can give you their contact. It is a process with numerous permits, there will be a fish kill, it will be expensive.
This post was edited on 12/4/18 at 1:31 pm
Posted on 12/4/18 at 8:16 am to baldona
quote:
) drain it , let it dry out, excavate it, and haul the material out
This is a good idea.
That's a great idea. You could push all the organic material into a pile and burn it right?
This is not.
) drain it , let it dry out, excavate it, and haul the material out
This is a good idea.
That's a great idea. You could push all the organic material into a pile and burn it right?
This is not.
Posted on 12/4/18 at 11:32 am to ihuntsum1
quote:
This is not.
Why not? Honestly don't know? If there is a ton of logs, sticks, and leaves on the bottom of the lake why not just put them in a pile and burn them instead of hauling them away?
FWIW I'm guessing the OP was looking for a cheap option like $10k max. Nothing I've seen says this will be cheap.
Posted on 12/4/18 at 11:38 am to MikeD
quote:Elaborate please
We get runoff from two places
Posted on 12/4/18 at 12:01 pm to ihuntsum1
For 20k you could probably drain it let it dry out then get a dozer to push it all to one side.
OP - Is there a common area adjacent to the pond? You can get the dozier to push it all into 1 spot then just let it dry out. 6 months to a year later after it really dewaters the HOA can hire someone to level it out and plant it as a park.
OP - Is there a common area adjacent to the pond? You can get the dozier to push it all into 1 spot then just let it dry out. 6 months to a year later after it really dewaters the HOA can hire someone to level it out and plant it as a park.
Posted on 12/4/18 at 12:22 pm to eng08
I'd also recommend a draw down. Some of the unconsolidated material will oxidize and shrink. If/when you get it to dry out enough I'd find an area of the pond that could use some riparian fish benches to improve habitat. Push the material into those areas and let it fill back up. You'll lose some of the pond's surface area, so make sure the disposal sites are not in front of someone's house (if possible). You may need to pump rain water out to allow the pond to dry enough for equipment to enter. A dozer will be cheaper, but you'll need it dryer. A buggy could get in quicker, but it'll be more expensive. Of course you'll need to restock the pond. This is an issue common to urban water bodies. If you don't deepen the system, eutrophication will start and you'll get increased occurrences of algal blooms and fish kills.
Posted on 12/4/18 at 12:23 pm to eng08
quote:
OP - Is there a common area adjacent to the pond? You can get the dozier to push it all into 1 spot then just let it dry out. 6 months to a year later after it really dewaters the HOA can hire someone to level it out and plant it as a park.
Or use it to build a few islands.
Posted on 12/4/18 at 1:23 pm to MikeD
I keep reading the title as you are sitting in pond.
Posted on 12/4/18 at 1:31 pm to MikeD
quote:silt isnt coming from your run off. It is organics.
Our neighborhood pond in BR has been silting up over the years. We get runoff from two places, and we have been dredged once maybe 20 years ago. I assume the most of the silt is from high rainfall events, and not routine runoff. There is also a contribution from leaves and organics. The pond depth is probably down to 2-4' throughout. The area is 10-15 acres.
Posted on 12/4/18 at 1:33 pm to eng08
everyone loves rapid drawdown until they smell it. Posted on 12/4/18 at 1:34 pm to Motorboat
IIRC the last two Oak Hills dredging projects were allowed to pump the dredge spoil into Bayou Fountain. Not sure something like this would be approved again -- and doesn't sound like the OP has a site into which his spoil can be pumped.
Posted on 12/4/18 at 3:30 pm to dawg23
Thanks for replies. We are right next to Oak Hills. Makeup to our lake is from Oak Hills drainage, but also a spot at the north side. I'm new to the area and just hearing about the issue.
There is not much room around the lake for piling dredged material to allow it to dewater on it's own. I'm just trying to get some info on any possibilities because the lake is the major draw for these houses.
There is not much room around the lake for piling dredged material to allow it to dewater on it's own. I'm just trying to get some info on any possibilities because the lake is the major draw for these houses.
Posted on 12/4/18 at 3:35 pm to CarRamrod
That was my thinking. It'll probably smell rotten
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