Dredging can be done either hydraulically or manually. When a sediment investigation reveals that your lake or pond has an unhealthy accumulation of sediment, we typically recommend dredging. After decades of sediment accumulation, dredging is often the best option to restore a degraded lake or pond back to its beauty and function. Often the goal is to return the lake or pond back to its original depth while reducing nutrients, like phosphorus, that feed alga and aquatic plants that can grow out of control. Dredging is the partial or complete removal of sediment layers rich in nutrients and organic matter. We use ESRI ArcMap software to create bathymetric, sediment thickness, and total depth maps and to calculate sediment volumes in order to make recommendations on how much lake sediment removal is necessary. We collect data points throughout the waterbody using either sonar or sediment probing poles, or both, depending on conditions, and GPS track data collection points for future reference. It involves measuring the depth of water and the amount of sediment present before we reach the original, hard bottom. It includes a bathymetric survey, which is an underwater topographical survey of the bottom of water body. What Does A Sediment Investigation in Illinois/Wisconsin Involve?Ī sediment investigation tells us how much sediment buildup there is in your lake or pond. Eventually, every lake and pond in Illinois and Wisconsin require the sediment to be removed and needs to be dredged in order to maintain their intended use, whether its recreation or stormwater storage. Sediment accumulation can be accelerated by shoreline erosion, runoff, or the seasonal buildup of organic material like submerged aquatic plants and leaves from trees. What is Sediment Build Up and Why Do I Need A Sediment Investigation?Īll lakes and ponds have a natural life span and fill up with sediment over time.
Service: Sediment Investigation & Dredging
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