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GREENWOOD, Miss. (AP) — A helicopter will be flying over parts of the Mississippi Delta to gather information for a 3-D map showing water resources.

The U.S. Geological Survey says from late February through early March, a low-flying copter will travel in a grid pattern over rural areas north and west of Greenwood. That includes the communities of Sunflower, Ruleville and Philipp.

A long wire underneath the helicopter will carry a tube holding specialized instruments to do the high-resolution geophysical survey. It will be operated by a company called CGG Airborne.

Scientists will use data to create high-resolution maps of aquifers to depths of about 200 feet (61 meters) below ground.

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The work is for the Mississippi Alluvial Plain Regional Water Availability project, to help water managers. Maps will be available to the public.