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Dredging - Has anyone here had to DIY?


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Our back slough has filled in pretty bad over the last three years. Probably around +3x of sediment, which makes it pretty much unusable except for a really high tide. We have 30+ homeowners on the island and getting them to all agree to do hire someone to do it commercially every 10 years or so is like pulling out your hair especially since a lot of them don’t use the back slough and therefore don’t see the value. 

 

Thankfully we are the second house from the opening and would only have to dredge about 300 linear yards. I estimate about 750 cubic yards of sediment to get back into operating shape and then a yearly once over after that. 

Anyone have any experience using one of these or had success with another product?

 

Piranha pumps seems to have a pretty cool, and cost effective, rig to do the bulk work and Y attachment to do yearly maintenance after that. 

https://piranhapump.com/mini-dredges#ImageGallery5-12

 

When looking into this a while back, I remember coming across this thing. Probably pretty sweet for bulking out an area, but inable to get into corners and underneath docks. Also, I 

https://images.app.goo.gl/Lz3fi61EHBFfkkuF9

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94MalibuEchelon

Is the location Kings Island off of Old River just south of Discovery Bay ??

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Florida claims ownership of all bottom land in the state, which means that any dredge or fill operation is a huge deal to get permitted.  Salt water areas only make it worse.  With all the tree huggers in your state, I can't imagine how you could just buy a pump and start dredging.

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2 hours ago, BarliBear said:

Our back slough has filled in pretty bad over the last three years. Probably around +3x of sediment, which makes it pretty much unusable except for a really high tide. We have 30+ homeowners on the island and getting them to all agree to do hire someone to do it commercially every 10 years or so is like pulling out your hair especially since a lot of them don’t use the back slough and therefore don’t see the value. 

 

Thankfully we are the second house from the opening and would only have to dredge about 300 linear yards. I estimate about 750 cubic yards of sediment to get back into operating shape and then a yearly once over after that. 

Anyone have any experience using one of these or had success with another product?

 

Piranha pumps seems to have a pretty cool, and cost effective, rig to do the bulk work and Y attachment to do yearly maintenance after that. 

https://piranhapump.com/mini-dredges#ImageGallery5-12

 

When looking into this a while back, I remember coming across this thing. Probably pretty sweet for bulking out an area, but inable to get into corners and underneath docks. Also, I 

https://images.app.goo.gl/Lz3fi61EHBFfkkuF9

@justgary hit it. DONT GET CAUGHT. We are all dealing with it all over the delta. If you have good flow I know a lot of guys that just take an outboard out there and blow it into the flow. Unfortunately that much flow doesn’t happen where we are at. My wife got stuck in our marina at los tide last time we were out. She just had to power through the silt. 

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2 hours ago, 94MalibuEchelon said:

Is the location Kings Island off of Old River just south of Discovery Bay ??

Ok so now you peeked my curiosity. Barli is further west. And Kong’s Island that I know is north of Disco. 

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94MalibuEchelon

Hi Sparky450:

Hope this helps….  Here is the Kings Island that I am very familiar with. 
My longtime friend has a deluxe trailer home on the north side of “Kings Island.”  
 

As for Barlibear and dredging… it’s the Dirty D ! It’s the Delta!  Do it !

 

 

Kings Island
https://goo.gl/maps/aJQhGHYAukbVoq7b8

 

https://en.m.wikipedia.org/wiki/Kings_Island_(California)

 

https://web.archive.org/web/20110128195901/http://kingsisland-ca.com/

 

 

 

 

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Yo fellas, we’ve done the I/O prop dredging for our lift, but it doesn’t move the dirt more than 5’ or so. It did work for the dirt underneath the lift however.  

We’ve always done the permit process previously because it was a large commercial operation. We will certainly do the permitting for the first go round at this but likely wouldn’t for annual maintenance after that. 

the sales guy made sure to specify that I was performing sediment removal and not dredging when applying for the permit FYI 

 

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A co-worker of mine had a long-term permit to dredge a small canal off the Gulf Intracoastal Waterway.  The normal current in the waterway would deposit sediment along the canal, so they let him dredge it.  I presume that is the same thing you are doing.  He had a small (10 HP) pump that he used, but the coarse sand is very hard on the impeller and seals.  He brought the pump to me to change the seals for him, then he took another job near Atlanta.  I still have the pump....

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Any 3” or larger trash pump will do this job. I have done it plenty of times here in Texas. 
 

Unless you plan to take care of the pump after each use, get one from harbor freight.

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25 minutes ago, MFknK said:

Any 3” or larger trash pump will do this job. I have done it plenty of times here in Texas. 
 

Unless you plan to take care of the pump after each use, get one from harbor freight.

I agree, and a 3" pump is what my friend had, but 750 cubic yards of material to move is quite a lot. 

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59 minutes ago, MFknK said:

Any 3” or larger trash pump will do this job. I have done it plenty of times here in Texas. 
 

Unless you plan to take care of the pump after each use, get one from harbor freight.

Island partner picked one up a few weeks ago. 😂😂

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31 minutes ago, justgary said:

I agree, and a 3" pump is what my friend had, but 750 cubic yards of material to move is quite a lot. 

We are really soft peat dirt if we walk in it you will drag what is between your legs. Our problem is that it has a bunch of small rotten debris that clogs the pickup hose. 

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1 minute ago, Sparky450 said:

We are really soft peat dirt if we walk in it you will drag what is between your legs. Our problem is that it has a bunch of small rotten debris that clogs the pickup hose. 

It would be more fun to just rent a track hoe and pull it out by the bucket full if it will reach.

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@BarliBear - What are you going to do with the dredge spoils?  750 cubic yards will lift an acre of ground almost six inches.  If you are putting it on site, you'll want a plan for sure.

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On 6/15/2021 at 12:41 PM, justgary said:

@BarliBear - What are you going to do with the dredge spoils?  750 cubic yards will lift an acre of ground almost six inches.  If you are putting it on site, you'll want a plan for sure.

Just about, ya. Along side the slough, we have an almost equivalent width flat area between the levee and the slough. 
 

Camera only something to consider and would have to come up with some filtering fabric and a silt fence so it all just doesn’t drain back into the slough 

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