1/3/2024 0 Comments Berm dredging pondsTypically berms are made of compost, sand, mulch or gravel materials, their density enable them to slow down and retain flood waters. Berms are placed in flood-prone areas to protect against erosion, run off and high water. On the other hand, dikes are built by digging a ditch and keeping the naturally excavated materials in a mound to prevent flooding.įor our purposes, we will use berm to describe these raised banks as this is common language used in the Province of Alberta to describe this form of flood mitigation.Ī berm can be a man-made sediment barrier placed at the edge of a slope or a wall built adjacent to a ditch to guard against potential flooding. Both berm and levee refer to raised embankments that are either man-made or the result of excavated land. The main difference between the terms is how each is built to mitigate flooding. The terms berm, dike, and levee are commonly used interchangeably to describe such structures that are used for flood mitigation. There are a variety of different terms for raised structures that act as a barrier between two areas.
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