Starting on September 30, 2016, the U.S. Geological Survey (USGS) will begin groundwater and geologic testing using a low-flying helicopter to collect and record geophysical measurements for scientific research purposes. The work will occur near the towns of Lost Hills, Buttonwillow and Cawelo in the southern San Joaquin Valley. The testing is being done in cooperation with the California State Water Resources Control Board and will last one to two weeks. USGS issued an advisory in accordance with FAA regulations and to serve the public interest.
More information about this project can be found by going to http://www.waterboards.ca.gov/water_issues/programs/groundwater/sb4/regional_monitoring/index.shtml.