Water-Resources Investigations Report 01-4239

Ground-Water Discharge Determined from Measurements of Evapotranspiration, Other Available Hydrologic Components, and Shallow Water-Level Changes, Oasis Valley, Nye County, Nevada

Table 6. Characteristics of water-supply wells used by the Beatty Water and Sanitation District during study, Oasis Valley and Amargosa Desert, Nevada, 1996-99

[Data source for construction information is Nevada Division of Water Resources drilling logs]

Well name: Wells are grouped by Nevada hydrographic area and within each area are listed in alphabetical order.

USGS site identification (ID): The standard site identification is based on the grid system of latitude and longitude. The number consists of 15 digits. The first six denote the degrees, minutes, and seconds of latitude; the next seven denote the degrees, minutes, and seconds of longitude; and the last two digits (assigned sequentially) identify the sites within a 1-second grid. For example, site 365619116483901 is at 36° 56'19" N latitude and 116° 48' 39" W longitude, and is the first site recorded in that 1-second grid. The assigned number is retained as a permanent identifier even if a more precise latitude and longitude are determined.

Local site number: A local site identification is used in Nevada to identify a site by hydrographic area (Rush, 1968) and by the official rectangular subdivision of the public lands referenced to the Mount Diablo base line and meridian. Each site designation consists of four units: The first unit is the hydrographic area number. The second unit is the township, preceded by an N or S to indicate location north or south of the base line. The third unit is the range, preceded by an E to indicate location east of the meridian. The fourth unit consists of the section number and letters designating the quarter section, quarter-quarter section, and so on (A, B, C, and D indicate the northeast, northwest, southwest, and southeast quarters, respectively), followed by a number indicating the sequence in which the site was recorded. For example, site 228 S11 E46 34ACAD 1 is in the Oasis Valley (Hydrographic Area 228). It is the first site recorded in the southeast quarter of the northeast quarter of the southwest quarter of the northeast quarter of section 34, township 11 south, range 46 east, Mount Diablo base line and meridian.

Land-surface altitude: Datum is sea level. Altitudes reported to nearest foot were estimated from U.S. Geological Survey 1:24,000 topographic maps and field observation.

Well depth: Datum is land surface.

Top of open interval: Depth below land surface of uppermost well opening.

Bottom of open interval: Depth below land surface of lowermost well opening.

Type of open interval: P, perforated or slotted casing; R, wire-wound screen; S, screen.

¹ Well EW-4 is not shown in the figures or on the plates that accompany this report.
² Alternating open intervals of perforated/slotted casing and screen.