Nevada Water Science Center


Aquifer Tests

Contact Information

Phil Gardner
Groundwater Specialist
Phone: (775) 887-7664
Email:pgardner@usgs.gov

 

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

 

Nevada Water Science Center
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Carson Valley Browns Well

Primary Investigator: Doug Maurer

Well Data

USGS Site ID
Local Name Altitude Uppermost
Opening
Lowermost
Opening
Primary Aquifer Transmissivity
(ft2/d)
390321119465301 Brown's 4654 100 400 ALLUVIAL FILL 20000

 

Aquifer Test

All Aquifer Test Files (zip)

Browns Well

Aquifer Test (pdf)

A single-well step-drawdown test was conducted by Humboldt Drilling and Pump Company, Inc., of Winnemucca, 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 Indian Hills General Improvement District. 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 for the test varied from 700, 1,000, 1,500, and 2,000 GPM for periods of 3 hours on 04/05/96. Water levels were measured with and electric sounder, and the method of flow-rate measurement, location of discharge of pumped water, and pre-test water-level trends are not known. The well was developed about 4 hours on 04/04/06 until about 7PM the day prior to the step-drawdown test. The test pump was set in a 10-inch liner installed to a depth of 370 ft and perforated from 100 to 370 ft. The liner was installed into the original 16-inch casing perforated from 100 to 294 ft.

Results of the test indicate a hydraulic conductivity and transmissivity of 40 ft/day and 20,000 ft2/day, respectively.

 

 

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