Mechanical Vegetation Removal (Hydro-Raking)
At times, a short-term, localized invasive plant removal method is needed. When  this happens, we turn to mechanical vegetation control; using specialized machinery to physically remove nuisance aquatic vegetation and other organic material from a water body. This method has no water restrictions, unlike chemical control methods.
At Allied Biological, we utilize several mechanical vegetation removal machines. Our most commonly used machine is the Hydro-Rake. This device uses a 4’ - 8’ wide rake with a backhoe-like attachment to collect and remove weeds, debris, and organic material. Equipped with high-speed paddle wheels and a limited draft, this machine is ideal for shallow waters. Hydro-Rakes are most often used to clear  small areas around docks, ramps, channels, and swimming areas, although they can help deepen shallow areas. The hydro-rake can also be equipped with a solid bucket with drains for dredging operations.
ABI also utilizes the Weed Harvester; a device with a cutter blade that varies from 5’ - 8' in width and has a reach of 5'. As the machine moves through the water, the weeds are cut and transported up a conveyer belt into a storage area in the rear. When that area is full, the plants are either placed on shore or loaded into a truck. In this way, Weed Harvesters can efficiently remove nuisance vegetation. The harvester also acts as a transport for material during hydro-rake operations, where long disposal points are necessary.
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