Excess sand extraction has serious consequences

Mangalore Today News Network

Mangaluru :   According to reliable reports, N.A. Madhyastha, environmental biologist, has said that reckless sand extraction in the coastal districts could have manifold environmental consequences. Dr. Madhyastha told media that west-flowing rivers were short and the sand deposition was less when compared to sand extraction. This affected the river bottom. When the river bottom became deeper, it led to erosion of river banks. It could also lead to depletion of sand at river mouths. This might also aid sea erosion. When excess sand was extracted, the river course became deeper and this could lead to an increase in saline water intrusion. Viewed in relation to the rise in the sea level, the situation becomes worse because the sea intrudes further into the river course. This can affect coastal biodiversity.

Excess sand extraction can affect bridges and buildings nearby. With the river becoming deeper, the groundwater level too is affected leading to poor water level generally.