Hydrologic data for Carson and Antelope Valleys, Douglas County, Nevada, and Alpine and Mono Counties, California, 1981-94
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Open-File Report↗
Geology topics
K.A. Mello
Publications and source records attributed to K.A. Mello.
Water resources data, Nevada, water year 1992
This report for Nevada is one of a series of annual reports that document hydrologic data gathered from the U.S. Geological Survey's surface-water and ground-water data-collection networks in each State, Puerto Rico, and the Trust Territories. These records of streams, canals, drains and springs, lakes and reservoirs, and observation wells provide the hydrologic information needed by State, local, and Federal agencies and the private sector for developing and managing our Nation's land and water resources.
Nevada↗
Improved apparatus for measuring hydraulic conductivity at low water content
A modification of the steady-state centrifuge method (SSCM) for unsaturated hydraulic conductivity ( K ) measurement improves the range and adjustability of this method. The modified apparatus allows mechanical adjustments to vary the measured K by a factor of 360. In addition, the use of different flow-regulating ceramic materials can give a total K range covering about six orders of magnitude. The increment of K adjustment is a factor of about 1.6. This makes it potentially useful for measuring targeted values of K or, through a trial and error procedure, of water content (θ). The range extension afforded by this modification has led to the lowest steady-state K measurement to date: 1.1 × 10 −11 m/s at θ of 0.068 m 3 water/m 3 for a sandy soil of the Delhi series (mixed, thermic Typic Xeropsamment).
Soil Science Society of America Journal↗