Nevada Water Science Center

Aquifer Tests

Contact Information

Phil Gardner
Groundwater Specialist
Phone: (775) 887-7664


Mailing Address
Nevada Water Science Center
2730 N. Deer Run Rd.
Carson City, NV 89701


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Carson Valley Minden 7

Primary Investigator: Doug Maurer

Well Data

Local Name Altitude Uppermost
Primary Aquifer Transmissivity
385749119432701 Minden#7 4807 175 500 ALLUVIAL FILL 2000


Aquifer Test

All Aquifer Test Files (zip)

Minden 7

Aquifer Test (pdf)

A single-well step-drawdown was conducted by Sargent Irrigation Company of Reno, Nevada. The well is completed in the basin-fill aquifer of Carson Valley, Nevada. Copies of time-drawdown and pump data were obtained from files of Resource Concepts, Inc.(RCI), the engineering firm in charge of the water-supply system for the town of Minden (Bruce Scott, RCI, written commun. 2005). Results of the aquifer test will be used in the development of a numerical ground-water flow model in Carson Valley, project # 9705-BPS01. Specifically, the estimated transmissivity will be used to develop a relation between transmissivity and specific yield. The relation will then be used with data from driller’s logs to develop a preliminary distribution of transmissivity for the valley.

The pump rate was varied from 518, 668, 823, 948, 1059, and 1,149 GPM for about 1-hour periods during the step-drawndown test on 6/11/85. After 5 PM, rates were decreased by various steps through 10:45 AM on 6/13/95. These data were not used for analysis. The methods of water-level and flow-rate measurements, location of discharge of pumped water, and pre-test water-level trends are not known. The well was reported completed on 6/13/97, and development of the well likely took place a relatively short time prior to the test periods.

Results indicate a hydraulic conductivity and transmissivity of 5 ft/day and 2,000 ft2/day, respectively.



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