Sediment Barrier at Lake Intake Cancel The title field is required!

1. Darryl Glinski

   

   0 posts
   
   3/10/2014 3:03 PM

   We recently discovered 'significant' sediment around the intake for our pump station. The intake was installed about two feet above the lake bottom. Today, fourteen years later, the lake bottom is a couple inches above the bottom of the intake. We are contemplating the installation of a barrier around the intake. I am sure others have done this. What shapes and materials work best? Has anyone ever observed a barrier making the situation worse...trapping sediment rather than keeping it out?
   
   Thanks,
   Darryl

   
   
   
   
2. Tony Feheregyhazi

   

   7 posts
   
   3/10/2014 4:03 PM

   We are having a similar problem and have basically just raised the intakes by shortening them. By no means have we fixed the issue and the sediment/sludge is a concern but chopping a couple of feat off the intake is the cheapest fix. great post I hope some solutions come from it other than dredging.
   
   Tony Feheregyhazi
   Bridges Golf Course
   Winnipeg, Canada

   
   
   
   
3. Tod Blankenship

   

   0 posts
   
   3/10/2014 8:03 PM

   Gents,
   
   I would look into Organic Sediment Removal Systems. They can suck a lot of the material away and come back in another 10 years to do it again. I had them out to a former course and would highly recommend them. I believe we spent about 6K for (2) pumphouses and intakes. They travel all over the country.
   
   Best of luck...

   
   
   
   
4. Christian Pekarek

   

   0 posts
   
   3/10/2014 9:03 PM

   Hi Darryl,
   
   We had a similar situation and at the time could not afford to dredge our entire irrigation pond. Many of our irrigation heads were getting clogged with bits of algae and sediment. We hired a company with a track backhoe to dig a 'pit' within a 10' radius from the intake. We then built a rock dam surrounding the pit using 4" to 8" limestone rip-rap. This solved our problem for 7 years until the rock dam became clogged with sediment.
   
   Chris Pekarek

   
   
   
   
5. Andy Jorgensen

   

   1 posts
   
   3/11/2014 4:03 AM

   I would think that creating a "pocket" so to speak around the intake using any type of material would increase the incoming velocity of the water and allow your intake pipe to start sucking sediment. In other words, as the hole gets smaller, the rush of incoming water is going to drag a lot with it. Your best best it to have a large area around it dredged or suctioned clean. A contractor can recommend what size area around your intake would need to be cleaned.
   
   http://www.usaquavac.com/