What is a primary reason for planting grass sod with a berm around a shoreline?

The primary reason for planting grass sod with a berm around a shoreline is to increase shoreline stability. A berm is a raised area that helps prevent soil erosion, which is especially important in areas where water meets land. When waves and currents act on the shoreline, they can erode the soil, leading to loss of land and habitat. By establishing grass sod along with a berm, the roots of the grass can help anchor the soil, reducing erosion and promoting a stable shoreline.

This stabilization is critical not only for protecting land but also for maintaining the health of the aquatic ecosystem by preventing the silt and pollutants from entering the water body. Shoreline stability promotes healthier habitats for various aquatic life, while also helping to manage water quality by reducing sedimentation and nutrient runoff into the water.