Dredging

Why Do we do it?

The Benthic Zone is the area at the bottom of a dam. This zone is comprised of sediment and soil and usually has a high demand for dissolved oxygen. This nutrient rich and oxygen starved bottom layer of the dam becomes unacceptably thick and unmanageable if it is not dredged.

How Do we do it?

The Dam Doctor will assist you in the removal of mud / sediment build up by means of a barge and dredging pumps.

Dredging is the removal of sediments and debris from dams. It is a routine necessity because sedimentation (the natural process of sand and silt gradually filling dams) decreases the depth of your dam over time. Dredging will decrease the benthic zone of your dam and will increase the capacity of your dam allowing for several more years of use.

Dredging generally removes 1 – 1.5 meters of muck, reducing the nutrient base for excess vegetation and creating deeper water where sunlight cannot penetrate. If you’re wanting to stock a dam with fish, we recommend dredging it to about 4.5 meters or more to improve fish habitat. The possibility of recreational use, such as swimming or boating, is restored by dredging.

We make use of pumps especially designed for dredging. All mud and/or sediment is pumped at a certain S.G. (Specific Gravity) into specialised dewater bags.

Once the mud/sediment has been sufficiently dried out, it can then be safely removed from site. 

The Dredging Process

Some Of Our Recent Projects

Project 1

Dam 17

Dam 17 - Before

Dam 17 - During

Dam 17 - After

During Photos

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