Hydraulic dredges are the workhorse of the lake dredging industry and are effective in moving large volumes of organic and inorganic sediments. They utilize a rotating underwater cutter and pumps to create a liquid slurry (a mixture of sediment and water) which is transferred to a disposal site via a floating pipeline. Hydraulic dredges have almost continuous operating cycles, facilitating the removal of large volumes of material in a short time, while minimizing turbidity in the water column. This method is better suited for sediments with relatively low levels of rocks and hard debris as they can damage the cutter and clog the pipeline.
Hydraulic dredging is generally preferred for lakes, rivers and wetlands when the volumes are large and site logistics favor the transfer of sediments via pipeline over many truck trips. In smaller waterbodies, one must also consider how to replace several thousand gallons per minute of a water and sediment slurry that is pumped with a typical hydraulic dredge.
Hydraulic dredging also requires large disposal ponds to allow natural drying of the slurry or portable dewatering equipment to squeeze enough water from the sediment so it can be transported by truck to a disposal site.
Healthy lakes and their shores not only provide us with a number of environmental benefits but they influence our quality of life and they strengthen our economy.
Whether formed by nature or man built for specific uses all reservoirs, lakes and/or ponds, left to nature, have a distinct lifespan. Sediment from disasters such as; Wildfires, Hurricanes and Floods as well as everyday debris in stormwater runoff, grass clippings, leaves, and other yard debris that find their way into the lake or pond add nutrients and accumulate on the bottom. This accumulation of nutrient rich sediment will gradually reduce the depth and volume of the water body adversely effecting its role as a flood control structure while also feeding harmful algae growth. As owners and managers of these water bodies, we play an active role in maintaining the “healthy lifestyle” of water bodies through the management program we choose and implement.
Maverick understands that proper lake function can ease the impact of floods and droughts by storing large amounts of water and releasing it during shortages. These lakes also work to replenish groundwater, positively influence water quality of downstream watercourses, and preserve the biodiversity and habitat of the area. When the ecological puzzle pieces of a lake come together and the lake is able to work as it should, the big picture is clear, all benefit from this important resource.
Mechanical dredging uses heavy equipment to remove sediment and debris from the bottom up and remove it. This equipment is usually brought in on a barge, or works while the body of water is drained. The equipment used can be very similar to that of residential construction equipment where a bucket is sent down to haul up dirt and remove it.
Mechanical dredging is quick and accurate but is often limited to reach from the shoreline or barge. Long reach excavators can reach from 50-70 feet and draglines a little further but less accurately. Barge mounted machinery must load material into a hopper barge for transport to land.
Silt curtains or air bubble curtains around the dredge area can create a temporary barrier and prevent contaminated sediment from flowing downstream. The water around the dredge area is monitored to provide an early warning if sediment begins to flow out of the area. Mechanical dredging churns up roughly as much sediment as a large rainstorm, which does not typically warrant an emergency response. However, projects can be temporarily shut down to fix equipment malfunctions or other issues.
M/LTE has provided quality mechanical dredging services to Federal and private clients alike. We have the dredging equipment and expertise necessary to carry out both large and small-scale debris removal, navigation and environmental projects using customized excavators and duty cycle cranes.
Each mechanical dredge is outfitted with state-of-the-art positioning equipment to maximize efficiency while minimizing over-dredging. Our experienced operators use the latest dredge management software for real-time production monitoring. M/LTE implements a variety of bucket types, including clamshells, rakes and debris buckets.
As in everything we do, M/LTE introduces a high level of innovation when it comes to mechanical dredging.
Much like a living organism, lakes and ponds are born and age. Many factors like nutrient loading can affect the length of a waterbody’s existence, but the lifespan is ultimately considered complete when sediment builds up to the point that it can no longer retain water. While this is the eventual fate of every lake and pond, proactive management strategies like nutrient remediation, aeration, buffer management and hydro-raking can help prolong the lifespan of the waterbody for many years.
M/LTE targets inland and protected waters that range from 15’ – 20’ in depth. Grounded in the latest technologies as well as sound environmental practices, M/LTE’s dredging services have been used by private and public companies as well as government agencies on projects spanning the United States.
The dredging services provided by M/LTE are customized to the client’s particular water project. Safety, cost-effectiveness, and environmental regulations are our priorities when designing and executing a dredging plan. M/LTE has crafted its dredging practices with precision and innovation while aligning with considerable industry experience with the latest advancements in equipment and technology. By providing targeted dredging for inland and protected waters with mobile dredge equipment, M/LTE can professionally remove sediment and vegetation to quickly restore the water to the desired depth.