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Thu, Feb. 20

Citizen water group <BR>to examine pumping <BR>from CV Ranch<BR>

The impacts of pumping large quantities of water from the CV Ranch in the Paulden area will be the topic of discussion at the next Citizens Water Advocacy Group (CWAG).

The meeting will take place at 10 a.m. Feb. 14 at the Granite Peak Unitarian Universalist Church at 882 Sunset Ave. in Prescott.

The featured speakers will be Bill Meyer and Ed Wolfe, both recently retired U.S. Geological Survey scientists. The premise of their discussion will focus on "why Prescott's pumping 12,000 acre-feet per year at the CV Ranch will have a substantial effect on the Verde River."

The two speakers will review the known geology and hydrology of the Big Chino Valley sub-basin. They also will refute the concept that an impermeable barrier (known as the "clay plug") isolates ground water in the upper Big Chino Valley from the lower part of the Big Chino Valley and the Verde River headwater springs.

According to a press release from CWAG, "groundwater from the upper Big Chino discharges at the headwater springs. Water removed from the system in the upper part of the valley is water that will never reach the headwater springs. Thus, discharge from the headwater springs will eventually be diminished by an amount equal to that removed from the system in the upper part of the Big Chino Valley."

Meyer and Wolfe maintain that Prescott's removal of 12,000 acre-feet of groundwater at the CV Ranch would reduce the flow of the Verde River by from 12 to 20 percent in 20 years, and 26 to 35 percent in 50 years.

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