Yavapai County is funding gravity studies and water well level measurements by the USGS in the Big Chino and Verde Valley aquifers "to measure changes in groundwater storage and better understand how the aquifers react to well pumping," according to a report in the Prescott Daily Courier. The USGS will instrument and monitor 6 observation wells for 3 years.
[right, well pump houses, Big Chino area. My photo, March 2009]