Earthen Embankments for Flood Control

Earthen embankments are a common flood control measure used to protect riverine areas from flooding. They are constructed parallel to the river banks at a suitable distance to prevent floodwater from inundating the surrounding areas. The embankments are also known as levees or dikes, and they serve as a barrier to prevent floodwater from entering the protected areas.

Function of Earthen Embankments

The earthen embankments are designed to perform several functions to prevent flooding. These functions include:

1. Containment of Floodwater: The primary function of earthen embankments is to contain and direct floodwater away from the protected areas.

2. Reduction of Flood Risk: By containing the floodwater, earthen embankments reduce the risk of flooding in the protected areas.

3. Protection of Property: Earthen embankments offer protection to property and infrastructure within the protected area.

4. Prevention of Erosion: The embankments also prevent erosion of the river banks by controlling the flow of water.

Types of Earthen Embankments

There are two types of earthen embankments used for flood control:

1. Levees: Levees are earthen embankments built parallel to the river bank to protect the adjacent areas from flooding.

2. Dikes: Dikes are similar to levees, but they are built to protect low-lying areas from tidal flooding due to sea-level rise.

Conclusion

Earthen embankments are an effective flood control measure used to protect riverine areas from flooding. They are constructed parallel to the river banks at a suitable distance to prevent floodwater from inundating the surrounding areas. The embankments serve as a barrier to prevent floodwater from entering the protected areas and offer protection to property and infrastructure within the protected area.

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