LiDAR (light detection and ranging) is a remote sensing method used to survey the surfaces of the Earth. It uses pulses of light to measure ranges (variable distances) to the Earth. It provides three-dimensional information about the shape Earth as well as its topography. It is also capable of measuring seafloor and riverbed elevation.

The Union Environment Minister Prakash Javadekar virtually released the Detailed Project Reports of LiDAR-based survey of forest areas in 10 states – Assam, Bihar, Chhatisgarh, Goa, Jharkhand, Madhya Pradesh, Maharashtra, Manipur, Nagaland, and Tripura. It will help identify areas facing excessive depletion of groundwater.

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