Some Shasta County residents have noticed an odd contraption flying through their skies. It’s not science fiction, though; it’s just science. It’s the California Department of Resource Management performing airborne electromagnetic surveys. A low-flying helicopter carries a huge hoop-shaped device that’s sort of a modern version of water dousing. It’s somewhat comparable to an MRI because it creates a current, which is sent into the ground and the signal that bounces back can detect aquifers as far as 1,000 feet underground. The resulting data is being used to create a map of long term groundwater sustainability.
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