- Associated Press - Sunday, October 4, 2015

SIOUX FALLS, S.D. (AP) - The City of Sioux Falls and the United States Geological Survey will begin conducting a state-of-the-art groundwater survey this week.

The city has contracted with CGG Canada Services to being flying a helicopter over the Big Sioux Aquifer to collect, record and map its geophysical measurements.

Officials say the study will determine groundwater, soil, and sand characteristics to help in the future planning of water access points.

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