Water table and related maps for Nevada Test Site and Central Nevada Test Area

Fenske, P.R.; Carnahan, C.L.

doi:10.2172/7141879

Cited by 7 publications

(7 citation statements)

References 1 publication

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“…Water-table maps, a water-table gradient map, and depth-to-water maps were constructed for the NTS and the Central Nevada Test Area (Fenske and Carnahan 1975). The maps were constructed using a digital empirical mapping technique.…”

Section: Investigations Of Site Hydrology Since !976mentioning

confidence: 99%

Review of information on hydrology and radionuclide migration at the Nevada Test Site 1976--1988, and annotated bibliography

Raymond¹,

Eddy²,

Wallace³

et al. 1989

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This report summarizes the results of almost 30 years of research on the movement and recharge of soil moisture at the NTS. Although data are scarce, three distinct topographic zones are represented: alluvial valleys, inundated terrains, and upland terrain. Recharge in alluvial valleys was found to be very .small or negligible. Ponded areas, such as playas and subsidence craters, showed significant amounts of recharge. In the upland terrains, Rainier Mesa shows active recharge of up to 3% of the annual average precipitation in fractured volcanic tuff.

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Section: Investigations Of Site Hydrology Since !976mentioning

confidence: 99%

Review of information on hydrology and radionuclide migration at the Nevada Test Site 1976--1988, and annotated bibliography

Raymond¹,

Eddy²,

Wallace³

et al. 1989

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“…The spatial distribution of hydraulic heads throughout the NNSS region typically has been conveyed on maps by a single set of generalized potentiometric contours. Most of these maps are regional in scope (Fenske and Carnahan, 1975;Waddell and others, 1984;Laczniak and others, 1996;D'Agnese and others, 1998;Harrill and Bedinger, 2004), but some are focused on Yucca Flat (Doty and Thordarson, 1983;Hale and others, 1995). Potentiometric-surface maps based on a multiple-aquifer conceptual model are few and include regional-scale maps of the NNSS area that show contours of hydraulic heads in rocks of Cenozoic and pre-Tertiary age (Winograd and Thordarson, 1975;Fenelon and others, 2010), and maps of the Rainier Mesa and Shoshone Mountain area that show contours of heads in a volcanic aquifer and in local and regional carbonate aquifers (Fenelon and others, 2008).…”

Section: Figures Introductionmentioning

confidence: 99%

Conceptualization of the predevelopment groundwater flow system and transient water-level responses in Yucca Flat, Nevada National Security Site, Nevada

Fenelon¹,

Sweetkind²,

Elliott³

et al. 2012

Scientific Investigations Report

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“…The spatial distribution of hydraulic heads throughout the NTS region typically has been conveyed on maps by a single set of generalized potentiometric contours. Most of these maps are regional in scope (Fenske and Carnahan, 1975;Waddell and others, 1984;Laczniak and others, 1996;D'Agnese and others, 1998;Harrill and Bedinger, 2004), although others are focused on distinct areas ( fig. 1) such as Pahute Mesa (Blankennagel and Weir, 1973;O'Hagan and Laczniak, 1996), Yucca Mountain (Robison, 1984;Ervin and others, 1994;Tucci and Burkhardt, 1995), or Yucca Flat (Doty and Thordarson, 1983;Hale and others, 1995).…”

Section: Introductionmentioning

confidence: 99%

Groundwater flow systems at the Nevada Test Site, Nevada: A synthesis of potentiometric contours, hydrostratigraphy, and geologic structures

Fenelon¹,

Sweetkind²,

Laczniak³

2010

Professional Paper

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Contaminants introduced into the subsurface of the Nevada Test Site by underground nuclear testing are of concern to the U.S. Department of Energy and regulators responsible for protecting human health and safety. The potential for contaminant movement away from the underground test areas and into the accessible environment is greatest by groundwater transport. The primary hydrologic control on this transport is evaluated and examined through a series of contour maps developed to represent the hydraulichead distribution within each of the major aquifers underlying the area. Aquifers were identified and their extents delineated by merging and analyzing multiple hydrostratigraphic framework models developed by other investigators from existing geologic information. A map of the hydraulic-head distribution in each major aquifer was developed from a detailed evaluation and assessment of available water-level measurements. Multiple spreadsheets that accompany this report provide pertinent water-level and geologic data by well or drill hole. Aquifers are mapped and discussed in general terms as being one of two types: alluvial-volcanic, or carbonate. Both aquifer types are subdivided and mapped as independent regional and local aquifers, based on the continuity of their component rock. Groundwater-flow directions, approximated from potentiometric contours that were developed from the hydraulic-head distribution, are indicated on the maps and discussed for each of the regional aquifers and for selected local aquifers. Hydraulic heads vary across the study area and are interpreted to range in altitude from greater than 5,000 feet in a regional alluvial-volcanic aquifer beneath a recharge area in the northern part of the study area to less than 2,300 feet in regional alluvial-volcanic and carbonate aquifers in the southwestern part of the study area. Flow directions Purpose and Scope The purpose of this report is to delineate the major aquifers beneath the NTS area and to define and describe the likely direction of groundwater flow in each of these aquifers under predevelopment conditions. Predevelopment conditions assume equilibrium or a near equilibrium state in the groundwater flow system prior to any major changes prompted by human intervention, such as pumping and nuclear testing. Groundwater flow directions are determined by constructing potentiometric surface maps that are designed to conceptualize and describe flow within and between the major aquifers in the multi-aquifer flow system of the NTS area. Maps and their component hydraulic heads can be used as calibration targets for flow models and can help identify likely groundwater flow paths. Maps are developed to delineate the spatial extent of the major aquifers throughout the NTS and surrounding area and to convey the primary direction of flow within each aquifer. These maps also show areas of recharge and likely areas of lateral leakage into and out of each aquifer. A second set of maps delineates flow systems and tributary flow systems for the regional aquif...

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Water table and related maps for Nevada Test Site and Central Nevada Test Area

Abstract: ~~ L e United State nor the United State4 Energy m a r s h and Dcrrlopmcnt Addniatnlion. m a n y of P r e m for the U. S. Energy *search and Developmk Administration, Nvada @@rations O f f i c e , under Omtract AT'(29-2)-1253.DISCLAIMER

Cited by 7 publications

References 1 publication

Review of information on hydrology and radionuclide migration at the Nevada Test Site 1976--1988, and annotated bibliography

Review of information on hydrology and radionuclide migration at the Nevada Test Site 1976--1988, and annotated bibliography

Conceptualization of the predevelopment groundwater flow system and transient water-level responses in Yucca Flat, Nevada National Security Site, Nevada

Groundwater flow systems at the Nevada Test Site, Nevada: A synthesis of potentiometric contours, hydrostratigraphy, and geologic structures

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