How To Pond Dredge A Large Acre Pond
August 11, 2021
Owners of a large acre plus pond need an economical solution for pond dredging and cleaning their prized watering holes. They want to know how to dredge their large ponds. Over time, ponds start to get filled up with sediment and if not constantly maintained, they get mucky and lose their water level. Looking to clean the pond and increase the water level by pond dredging, pond owners need to remove a couple of feet of sediment and recirculate in clean water without disturbing the current wildlife. Pond owners resort to a variety of methods, like excavation to clean the outer area of the pond but cannot get to the center with the excavator’s arms reach. A complete drain and excavation are likely out of the question for many of these pond owners.
These pond owners are in search of a product that can help them complete their job of cleaning and lowering their pond. Attracted by the small and mini dredges DAE Pumps offers, like the Sediment Slayer and Silt-Bot, pond owners look towards these units to be able to reach the center and edges of the pond. Unfortunately, many customers shy away from them because of the price even though they can rent them monthly at reduced costs. Others resort to service companies for renovating the ponds for them. Unfortunately, the sad result is that these pond owners never end up cleaning and lowering their ponds. Years of neglect lessen the beauty and use of these ponds. Over time, the pond builds up with even more sediment, gets murkier, and becomes less desirable or dries up.
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Small and Mini Dredge
The DAE Pumps pontoon dredges are floating dredges that have highly durable submersible slurry pumps for suctioning and moving material. These well-designed systems can help pond owners complete the clean-up in a short time. Sometimes this can take a couple of days or a couple of weeks depending on the size of the pond.
The Sediment Slayer is a ride-along pontoon dredge equipped with a 6” pump and 66” auger for agitation and breaking up material, then moving it away. This powerful system carves out over 5 ft. wide sections at a time, providing quick and complete results with ease. As a small pond dredge, the Sediment Slayer is capable of accessing every area of a pond or waterway. With an extended arm, it can reach depths of 15 ft.
Another option for reaching the full width and length of a pond is the Silt-Bot. The Silt-Bot is on an electrical pulley system that moves forward/backward and up/down. With stakes on both sides of the pond, lagoon, or another water area, the operator monitors the Silt-Bot from the shoreline with the handheld remote control. This mini pond dredge is powered by a 4” submersible pump that suctions a radius of about 12- to 18-inches. The Silt-Bot has a little more limitation, for operating at depths between 2 to 11 ft. of water
How To Build Your Own Pond Dredge System
Based on the same principles of the Silt-Bot mini dredge, pond owners can create their own pulley system pond dredge for an economical price less than the monthly rental of one of these pontoon dredges. I’ll explain how:
What You Need To Dredge A Pond
- Slurry or sludge pump
- Nitrile lay-flat discharge hose
- Hose and cable floats
- Support chain
- Heavy-duty carabiners or chain clamps
- Double Braided Polyester rope
- Eyelet stakes
- Eye pulley
- Straw wattles
- Anchor stakes
Straw Wattle with Stake
Selecting The Equipment to Pond Dredge
When selecting a submersible pump for dredging a pond, the pump should be capable of processing the material without clogging. A slurry pump made with high chrome metal casings and parts is ideal for moving sediment. They tend not to clog or wear like standard types of pumps can. Visit DAE Pumps Slurry Pumps for our large selection. If cleaning out muck and sludge with minimal sediment, use a DAE Pumps sludge pump. The sludge pumps are made of high chrome metals but wear parts are not as durable as the slurry pumps parts. See our sludge pump selection here!
Another important aspect of the pump is the power cord. Most pumps come with 60-65 feet of 3-phase cord. To ensure the cord length meets your requirements, measure the widest section of the pond. A skilled electrician will be able to connect and seal additional wiring that would be exposed to water if the cord is undersized. Also, if the cord is too small you can potentially run one-half the width and then run the other half.
Fitting the pump with the right generator for power is essential. The generator must be able to power the pump at startup and consistently run without interruption. A DAE Pumps representative or local rental company can help you identify the right generator for the pump.
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The lay-flat discharge hose should consist of synthetic woven liner reinforcement with a ribbed nitrile rubber cover or higher quality. This helps protect the hose for less wear and tear as abrasive material passes through.
DAE Pumps offer rafts for many of our submersible pumps. These rafts are designed to suspend the pump in water for pond dredging and dewatering. The Raft is an integral part of the set-up for designing a pulley-style dredge. A properly sized raft must support the pump and offer chain length modifications.
Set Up The Catch
Setting up the dredge system catch is key to the dredging process. You want to pump out the sediment and murky water and replace it with clean water at the same time. After the pumping is complete, being able to remove the sediment is something to consider.
The catch on a pond dredge system can be set up in a couple of ways:
- The cleanest and easiest catch is a dewatering bag. These bags fill up with sediment and water from the discharge and the water seeps out, thus collecting the sediment and muck. Using dewatering bags is pretty easy, but they can slow down your production time filling bags quickly and having to stop and replace them with another bag. Once the material is dried they offer easy removal.
- Another option is to build a multi-level drainage system not too far off the waterline so the water can flow back into the pond. Between each level add straw wattles and secure them with stakes. The straw wattles act as barriers and strainers. They hold back the sediment and filter the water so clean water fills back into the pond while pumping.
Set Up The Pulley Dredge
- Using the chain and clamps, connect the pump to the raft so the pump touches the bottom of the pond.
- Place an eyelet stake on each end of the pond on the shore.
- Secure the eye pulley to the eyelet of each stake
- Connect the rope to one eyelet of the raft
- Run the free end of the rope thru the pulleys on each side of the pond
- Connect the free end of the rope to the eyelet on the other end of the raft allowing for a little slack in the rope for movement
- Securely connect the discharge hose to the pump discharge nozzle
- Attach several floats to the discharge hose and to the power cable so the lines are at the top of the water level and do not get caught up with the pump.
- Fix the discharge end of the hose to the dewatering bag or affix to a stake if using a multi-level drainage system.
- Have a certified electrician connect the power cord to the generate and start the pump to be sure the electrical is working properly
Now that the pulley dredge is set up you can manually drag the dredge from one side of the pond to the other. As the pump moves over the bottom of the pond, it will suction the sediment and discharge it in the bag or drainage catch. You may need to adjust the discharge end of the hose to disperse the material exactly into the drainage system. Depending on the horsepower and intake of the pump, the pump will suction several inches to a couple of feet of material at a time.
When the dredge reaches the other side of the pond move the stakes on both ends of the pond about a foot or so and pull the dredge back to the other side. Repeat this process until the entire pond has been dredged. Once complete, lower the pump on the chain and repeat dredging the pond until you reach the desired depth. This process can take time but it offers a less expensive solution to enjoying your pond for years to come.
DAE Pumps – Going Above and Beyond!
DAE Pumps is a premium industrial slurry pumps and dredge equipment manufacturer. Offering unparalleled performance for many different industries, DAE Pumps are ideally suited for Mining, Construction, Marine, Farming Operations, Municipal, Water & Wastewater, and many other industries. Along with the high-quality pumps DAE Pumps offers, we also provide world-class service to assist you no matter what the pumping challenge.
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