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November 10, 2007

Hydrogeology of Northern Arizona

This seminar might be very interesting for those of you who would like to know the current state of our aquifer. Sorry that there is not location for the talk listed. Please contact Michael Hoenig if you are interested in attending. His email is mjh248@nau.edu.

This week's seminar speaker will be Don Bills of the U.S. Geological Survey here in Flagstaff. Don is a hydrologist with the Water Resources Division at the Flagstaff Science Center and his talk is titled, "Hydrogeology of Northern Arizona." Below is a copy of the abstract and the web address of the USGS website where you can find the complete report on "Hydrogeology of the Coconino Plateau and Adjacent Areas..."

http://az.water.usgs.gov/index.html

Abstract
Two large, regional ground-water flow systems occur in the Coconino Plateau and adjacent areas: the C aquifer and the Redwall-Muav aquifer. The C aquifer occurs mainly in the eastern and southern parts of the 10,300-square-mile Coconino Plateau study area, and the Redwall-Muav aquifer underlies the entire study area. The C aquifer is a water-table aquifer for most of its occurrence with depths to water that range from a few hundred feet to more than 1,500 feet. In the western part of the Coconino Plateau study area, the C aquifer is dry except for small localized perched water-bearing zones decoupled from the C aquifer to the east. The Redwall-Muav aquifer underlies the C aquifer and ranges from at least 3,000 feet below land surface in the western part of the Coconino Plateau study area to more than 3,200 feet below land surface in the eastern part of the study area. The Redwall-Muav aquifer is a confined aquifer for most of its occurrence with hydraulic heads of several hundred to morethan 500 feet above the top of the aquifer in the western part of the study area and more than 2,000 feet above the top of the aquifer in the eastern part of the study area near Flagstaff. In the eastern and northeast parts of the area, the C aquifer and the Redwall-Muav aquifer are in partial hydraulicconnection through faults and other fractures.

Posted by maxmaddy at November 10, 2007 7:56 PM