Hydrogeology and water resources of Middle Kirkland Creek basin, Yavapai county, Arizona.

• Main Author: Randall, Jeffrey Hunt.
• Other Authors: Harshbarger, John W.
• Language: en
• Published: The University of Arizona. 1974
• Online Access: http://hdl.handle.net/10150/191604

Middle Kirkland Creek basin lies at the northern edge of the Basin and Range province 20 miles southwest of Prescott, Arizona. The hydrogeologic system of the basin includes two major aquifers: alluvial sediments and basaltic volcanics. The alluvial sediments are a series of granitic pebble conglomerates intercalated with basalt flows in some areas overlaid by finegrained lacustrine sediments that grade laterally into a pebble conglomerate. Overlying these units is a thin narrow deposit of unconsolidated sands, gravels, and silts representing the flood-plain alluvium of Kirkland Creek. The estimated transmissitivities of the alluvial sediments are as follows: Lower Kirkland Valley - 75,000 to 100,000 gpd/ft Thompsons Valley - 30,000 to 60 , 000 gpd/ft Well yields in Lower Kirkland Valley range from 500 to 1200 gpm and those from Thompsons Valley 200 to 500 gpm. The decreased yields in Thompsons Valley result from the finer texture of the flood-plain alluvium in this area. The basalt aquifer consists of a series of more than 1000 feet of fractured basalt flows interbedded with cinder and conglomeratic layers. The transmissivity of this unit is estimated to range from 50,000 to 200,000 gpd/ft. Wells drilled in this unit could yield 200 to 1000 gpm depending on the nature of the fracturing.