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ADWR's Land Subsidence Monitoring Program

from Arizona Department of Water Resources

In 1997, numerous nonexempt wells were proposed in the Apache Junction and Luke Air Force Base areas, both areas noted for significant historic land subsidence and earth fissuring. Arizona Department of Water Resources management had concerns over the potential for the new wells to cause unreasonable increasing harm which led to a Directorate level decision to begin a land subsidence monitoring program. As a result, Geophysics/Surveying Unit of the Hydrology Division was created and started monitoring land subsidence by collecting survey-grade GPS data on survey monuments in the Hawk Rock land subsidence area located in east Mesa and Apache Junction. more

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