U.S. Department of the Interior

U.S. Geological Survey

Open-File Report 2006-1285

Prepared in cooperation with the Office of Civilian Radioactive Waste Management 

of the U.S. Department of Energy, under Interagency Agreement DE-AI28-02RW12167

Selected Ground-Water Data for Yucca Mountain Region,

Southern Nevada and Eastern California,

January–December 2004

Selected Ground-Water Data for

Yucca Mountain Region, Southern

Nevada and Eastern California, 

January–December 2004

By Richard J. La Camera, Glenn L. Locke, Aron M. Habte, and Jon G. Darnell

Prepared in cooperation with the Office of Civilian Radioactive Waste Management 

of the U.S. Department of Energy, under Interagency Agreement DE-AI28-02RW12167

Open-File Report 2006-1285

U.S. Department of the Interior

U.S. Geological Survey
U.S. Department of the Interior

DIRK KEMPTHORNE, Secretary

U.S. Geological Survey

Mark D. Myers, Director

U.S. Geological Survey, Carson City, Nevada: 2006

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Although this report is in the public domain, permission must be secured from the individual copyright owners to 

reproduce any copyrighted materials contained within this report.

Suggested citation:

La Camera, R.J., Locke, G.L., Habte, A.M., and Darnell, J.G., 2006, Selected ground-water data for Yucca Mountain Region, southern 

Nevada and eastern California, January–December 2004: U.S. Geological Survey Open-File Report 2006-1285, 71 p. 

Available at http://pubs.water.usgs.gov/ofr2006-1285
iii

Contents

Abstract.......................................................................................................................................................... 1

Introduction.................................................................................................................................................... 1

Purpose and Scope ............................................................................................................................. 1

Acknowledgments............................................................................................................................... 2

Description of Study Area ........................................................................................................................... 2

Alkali Flat–Furnace Creek Ranch Ground-Water Subbasin ......................................................... 2

Ash Meadows Ground-Water Subbasin.......................................................................................... 4

Data-Collection Sites.................................................................................................................................... 4

Ground-Water Levels ................................................................................................................................... 5

Electric Tape ......................................................................................................................................... 9

Steel Tape............................................................................................................................................ 10

Pressure Sensor................................................................................................................................. 10 

Ground-Water Discharges ........................................................................................................................ 11

Ground-Water Withdrawals...................................................................................................................... 11

Withdrawals from Alkali Flat–Furnace Creek Ranch Ground-Water Subbasin...................... 13

Withdrawals from Ash Meadows Ground-Water Subbasin....................................................... 13

Discussion of Ground-Water Levels and Ground-Water Withdrawals in Jackass Flats ............... 14

References Cited......................................................................................................................................... 14

Basic Data.................................................................................................................................................... 17

FIGURES

1. Map showing location of data-collection sites in the Yucca Mountain Region, 

southern Nevada and eastern California, 2004...................................................................... 3 

2. Graphs showing periodic water levels for selected sites through 2004 at 

which primary contributing unit is carbonate rock.............................................................. 19

3. Graphs showing periodic water levels for selected sites through 2004 at 

which primary contributing unit is volcanic rock................................................................. 21

4. Graphs showing periodic water levels for selected sites through 2004 at 

which primary contributing unit is basin fill .......................................................................... 23

5. Graphs showing periodic water levels for selected sites through 2004 at 

which primary contributing unit is undifferentiated sedimentary rock ............................ 28

6. Graph showing daily mean water levels in (A) borehole JF-3, 

May 1992–December 2004 and in (B) borehole AD-6, July 1992–December 2004.......... 29

7. Graphs showing discharge at sites (A) AM-1a (Fairbanks Spring), 

(B) AM-5a (Crystal Pool), and (C) AM-8 (Big Spring), 1910–2004....................................... 30

8. Graph showing discharge at sites AM-2 (Five Springs Well) and 

DV-2 (Navel Spring), 1990–2004............................................................................................... 31

9. Graph showing discharge at site DV-1 (Texas Spring), 1989–2004 ................................... 32

10. Map showing location of ground-water withdrawal sites and general areas

of ground-water withdrawals in the Yucca Mountain region of southern

Nevada and eastern California, January–December 2004................................................. 33
iv

11. Graph showing available estimates of annual ground-water withdrawals 

for selected areas within Alkali Flat–Furnace Creek Ranch ground-water

subbasin, 1959–2004.................................................................................................................. 34

12. Graph showing available estimates of annual ground-water withdrawals

for selected areas within Ash Meadows ground-water subbasin, 1962–2004 ............... 35

13. Graphs showing water-level altitudes in boreholes JF-1, JF-2, JF-2a, J-13, 

J-11, J-12, and JF-3 and estimated annual ground-water withdrawals from

Jackass Flats, 1983–2004.......................................................................................................... 36

14. Graphs showing median water-level altitudes and average deviation of 

water levels for boreholes JF-1, JF-2, JF-2a, J-13, J-11, J-12, and JF-3 and

estimated annual ground-water withdrawals from Jackass Flats, for 

1992–93 baseline period and for 1994–2004 .......................................................................... 38

TABLES

1. Index to monitoring sites in Yucca Mountain region, 2004.................................................. 4

2. Borehole-completion data at monitoring sites in Yucca Mountain region........................ 6

3. Periodic water-level data at monitoring sites in Yucca Mountain region, 2004.............. 41

4. Daily mean water levels in borehole JF-3, 2004 ................................................................... 65

5. Daily mean water levels in borehole AD-6, 2004.................................................................. 66

6. Electric-tape calibration data used to derive correction factors, 2004............................ 10

7. Summary of pressure-sensor calibrations and associated error at 

boreholes JF-3 and AD-6, 2004................................................................................................ 12

 8. Ground-water-discharge data at monitoring sites in Yucca Mountain region, 2004 ..... 67

9. Estimated annual ground-water withdrawals from wells in Yucca Mountain region, 

2004 ............................................................................................................................................. 69

10. Minimum, maximum, and median water-level altitudes, and average deviation

 of measurements, at selected boreholes in Jackass Flats for the baseline period 

1992–93 and for calendar years 1994–2004 ........................................................................... 69
Conversion Factors and Vertical Datum

Multiply By To obtain

acre 4,047 square meter (m2)

acre-foot (acre-ft) 1,233 cubic meter (m3)

foot (ft) 0.3048 meter (m)

gallon (gal) 0.003785 cubic meter (m3)

gallon per minute (gal/min) 0.06309 liter per second (L/s)

mile (mi) 1.609 kilometer (km)

million gallons (Mgal) 3,785 cubic meter (m3)

pound per square inch (lb/in2) 6.895 kilopascal (kPa)

Temperature in degrees Celsius (°C) may be converted to degrees Fahrenheit (°F) as follows: 

°F=(1.8×°C)+32

Temperature in degrees Fahrenheit (°F) may be converted to degrees Celsius (°C) as follows: 

°C=(°F-32)/1.8

Vertical coordinate information is referenced to the National Geodetic Vertical Datum of 1929 

(NGVD 29).

Horizontal coordinate information is referenced to the North American Datum of 1927 (NAD 27).

Altitude, as used in this report, refers to distance above the vertical datum.
vi

This page left blank intentionally.
Abstract

The U.S. Geological Survey, in support of the U.S. 

Department of Energy, Office of Civilian Radioactive Waste 

Management, collects, compiles, and summarizes hydrologic 

data in the Yucca Mountain region of southern Nevada and 

eastern California. These data are collected to allow assessments of ground-water resources during activities to determine 

the potential suitability or development of Yucca Mountain for 

storing high-level nuclear waste.

Data on ground-water levels at 35 boreholes and 1 fissure (Devils Hole), ground-water discharge at 5 springs, both 

ground-water levels and discharge at 1 flowing borehole, 

and total reported ground-water withdrawals within Crater 

Flat, Jackass Flats, Mercury Valley, and the Amargosa Desert 

are tabulated from January through December 2004. Also 

tabulated are ground-water levels, discharges, and withdrawals collected by other agencies (or collected as part of other 

programs) and data revised from those previously published at 

monitoring sites. Historical data on water levels, discharges, 

and withdrawals are presented graphically to indicate variations through time.

A statistical summary of ground-water levels at seven 

boreholes in Jackass Flats is presented for the period 1992–

2004 to indicate potential effects of ground-water withdrawals 

associated with U.S. Department of Energy activities near 

Yucca Mountain. The statistical summary includes the annual 

number of measurements, maximum, minimum, and median 

water-level altitudes, and average deviation of measured waterlevel altitudes compared to the 1992–93 baseline period. At six 

boreholes in Jackass Flats, median water levels for 2004 were 

slightly higher (0.3–2.7 feet) than their median water levels for 

1992–93. At one borehole in Jackass Flats, median water level 

for 2004 equaled the median water level for 1992–93.

Introduction

Activities to assess the potential suitability or development of Yucca Mountain for storing high-level nuclear waste 

are in progress or planned. The U.S. Department of Energy 

(DOE), Office of Civilian Radioactive Waste Management, has 

declared that all facilities and investigations associated with 

such activities will be operated in a manner that maintains or 

protects environmental quality, and has established programs 

to allow assessments of environmental quality. In April 1989, 

the U.S. Geological Survey (USGS) began a cooperative program with DOE to develop a ground-water-resources monitoring program in the vicinity of Yucca Mountain. The purposes 

of the monitoring program are to (1) document the historical 

and current conditions of ground-water resources, (2) detect 

and document changes in those resources during activities at 

Yucca Mountain, and (3) provide a basis for analyzing and 

identifying potential adverse effects on ground-water resources 

resulting from investigations and activities at Yucca Mountain.

Purpose and Scope

This report presents and summarizes hydrologic data 

collected as part of the USGS Environmental-Monitoring Program (USGS-EMP). Included are data for calendar year 2004 

on ground-water levels at 35 boreholes and 1 fissure (Devils 

Hole), ground-water discharge at 5 springs, both ground-water 

levels and discharge at 1 flowing borehole, and total reported 

ground-water withdrawals within Crater Flat, Jackass Flats, 

Mercury Valley, and Amargosa Desert. Additional data on 

ground-water levels, discharges, and withdrawals collected 

by other agencies (or collected as part of other programs) and 

data revised from those previously published at the sites also 

are included.

A discussion of ground-water data for Jackass Flats 

includes a statistical summary of those data to indicate the 

potential effects of withdrawals from boreholes in Jackass 

Flats on water levels near Yucca Mountain. Effects of these 

withdrawals may be detected in Jackass Flats before they are 

detected elsewhere in the Yucca Mountain region.

This report is the eleventh in a series of reports as part 

of the USGS-EMP. Hereafter, the first 10 reports are referred 

to as previous reports on selected ground-water data for the 

Yucca Mountain region. The previous reports and the data they 

contain are:

Selected Ground-Water Data for Yucca Mountain Region, 

Southern Nevada and Eastern California, 

January–December 2004

By Richard J. La Camera, Glenn L. Locke, Aron M. Habte, and Jon G. Darnell
Report (see references cited) Data contained

La Camera and Westenburg (1994) Earliest available data through 

1992

Hale and Westenburg (1995) Data collected in 1993

Westenburg and LaCamera (1996) Data collected in 1994

La Camera and others (1996) Data collected in 1995

La Camera and Locke (1998) Data collected in 1996

La Camera and others (1999) Data collected in 1997

Locke (2001a) Data collected in 1998

Locke (2001b) Data collected in 1999

Locke and La Camera (2003) Data collected in 2000 through 

2002

La Camera and others (2005) Data collected in 2003

Additional information for sites CF-­2, JF­-1, JF­-2, JF-­2a, 

J­-13, J­-11, and J­-12 are included in Robison (1984), Robison 

and others (1988), Gemmell (1990), McKinley and others 

(1991), O’Brien (1991, 1993), Luckey and others (1993), 

Boucher (1994), Lobmeyer and others (1995), O’Brien and 

others (1995), Graves and others (1996), Tucci and others 

(1996a, 1996b), Graves (1998), Graves and Goemaat (1998), 

Graves (2000), Savard (2001), and the Harry Reid Center for 

Environmental Studies at the University of Nevada, Las Vegas 

(2006).

Acknowledgments

Several organizations and programs contributed to 

this report. Specifically, data were provided by the Harry 

Reid Center for Environmental Studies at the University of 

Nevada, Las Vegas (HRC); National Park Service (NPS); U.S. 

Fish and Wildlife Service (USFWS); Nevada Department 

of Conservation and Natural Resources, Division of Water 

Resources (NDWR); Nye County Nuclear Waste Repository 

Project Office (NWRPO; Nevada Department of Transportation; Bechtel Nevada (BN); Bechtel SAIC Company, LLC; 

Fenix and Scisson, Inc.; Raytheon Services Nevada; Reynolds 

Electrical and Engineering Company; U.S. Borax Corp.; U.S. 

Nevada Gold Search; Barrick Bullfrog, Inc.; Cind-R-Lite 

Company; U.S. Department of Energy, National Nuclear Security Administration, Nevada Site Office (NTS); and USGS–

Yucca Mountain Project Branch studies of saturated-zone 

site hydrology and saturated-zone regional hydrology as part 

of the USGS’s Site-Characterization Project (USGS-SCP). 

Additionally, the authors acknowledge the cooperation of the 

many individual property owners throughout the Amargosa 

Desert who allowed access to their property for the collection 

of hydrologic data.

Description of Study Area

The study area is the Yucca Mountain region of southern 

Nevada and eastern California (fig. 1). The boundary of the 

Yucca Mountain region, for purposes of this report, roughly 

coincides with the northern parts of Crater Flat and Jackass 

Flats, eastern parts of Rock Valley, Mercury Valley, and 

Amargosa Desert, Nev., and Death Valley Junction and Furnace Creek, Calif., to the south and west. The region is within 

the Great Basin, a subdivision of the Basin and Range Province (Fenneman, 1931, p. 328).

The study area is in the Death Valley Ground-Water 

Regional Flow System (Harrill and others, 1988, sheet 1) and, 

within that flow system, the Alkali Flat–Furnace Creek Ranch 

and Ash Meadows ground-water subbasins. Each groundwater subbasin is a zone consisting of ground-water recharge 

areas and flow paths to points of discharge at land surface 

(Waddell and others, 1984, p. 36; Laczniak and others, 1996, 

p. 16 and pl. 1). Boundaries of the subbasins are defined on 

the basis of the location of recharge areas, discharge areas, 

low-permeability rocks, hydraulic gradients, and water chemistry. These boundaries are general indicators of restrictions on 

ground-water movement in the region.

The study area also is subdivided by hydrographic areas1

(fig. 1). As defined by Rush (1968, p. 4), hydrographic areas 

generally consist of valleys (topographic lows) extending to 

their surrounding surface-water drainage divides (topographic 

highs). Hydrographic areas include Crater Flat, Jackass Flats, 

and Rock Valley, most of Mercury Valley and Amargosa Desert, and part of Death Valley (Rush, 1968; Harrill and others, 

1988, sheet 2).

Alkali Flat–Furnace Creek Ranch Ground-Water 

Subbasin

Crater Flat and Jackass Flats (which include Yucca 

Mountain), most of Rock Valley, the west-central part of the 

Amargosa Desert, and part of Death Valley are in the Alkali 

Flat–Furnace Creek Ranch ground-water subbasin (fig. 1). 

Principal sources of ground water within this subbasin are 

precipitation and subsurface inflow (Waddell and others, 1984, 

p. 36; Harrill and others, 1988, sheet 2; Laczniak and others, 1996, table 3). Precipitation occurs mainly on the higher 

mesas and mountains within the subbasin and along the subbasin’s north and northeast mountainous boundaries. Subsurface 

inflow into the subbasin occurs near Beatty from the Oasis 

Valley subbasin, near Ash Meadows from the Ash Meadows 

subbasin, and possibly from Cactus Flat (about 40 mi north of 

Beatty, Nev.). Ground water discharges from springs in Death 

Valley and as evapotranspiration from Alkali Flat and Death 

Valley. Ground water generally flows to the south, southeast, 

or southwest (Kilroy, 1991, p. 9–13; Tucci and Burkhardt, 

1995, p. 8; Laczniak and others, 1996, pl. 1).

1

The U.S. Geological Survey and Nevada Division of Water Resources 

delineated formal hydrographic areas in Nevada systematically in the late 

1960’s for scientific and administrative purposes (Rush, 1968; Cardinalli and 

others, 1968). The official hydrographic area names, numbers, and geographic 

boundaries con­tinue to be used in U.S. Geological Survey scientific reports 

and Water Resources Discipline administrative activities. Extensions of hydrographic areas from Nevada into California and selected hydrographic areas in 

California also have been delineated by Harrill and others (1988, sheet 2).

   Selected Ground-Water Data for Yucca Mountain Region, January–December, 2004
Figure 1. Location of data-collection sites in the Yucca Mountain region, southern Nevada and eastern California, 2004.

Description of Study Area 

0 5 10 MILES

0 5 10 KILOMETERS

5

5

Alkali

Flat

Amargosa

Flat

P a h r u m p

Alkali

Flat

Amargosa

Flat

P a h r u m p

? ?

?

?

?

?

?

?

?

?

? ?

?

?

?

?

?

?

?

?

? ?

?

?

?

? ?

?

?

?

?

?

?

?

?

? ?

?

?

?

?

?

?

?

?

? ?

?

?

?

INDIAN SPRINGS VALLEYINDIAN SPRINGS VALLEY

NEVADA

CALIFORNIA CALIFORNIA

NEVADA

Wash

A margos a RiverA margos a River

190

374

95

160

373

Pahute Mesa

DEATH VALLEY

SARCOBATUS

 FLAT

BUCKBOARD MESA

Beatty

Amargosa

Valley

Death

Valley

Junction

Panamint Range

Black Range

Funeral Mountains

Grapevine Mountains

Bullfrog

Hills

Ash Spring

Mountains

Indian

Springs

Spotted Range

Mercury

Halfpint Range

Shoshone

Mountain

Greenwater

Range

Furnace

Creek

Specter Range

Pahute Mesa

DEATH VALLEY

SARCOBATUS

 FLAT

BUCKBOARD MESA

Beatty

AMARGOSA

DESERT

AMARGOSA

DESERT

Amargosa

Valley

ROCK VALLEYROCK VALLEY

Death

Valley

Junction

Panamint Range

Black Range

Funeral Mountains

Grapevine Mountains

Bullfrog

Hills

PAHRUMP VALLEYPAHRUMP VALLEY

Ash Spring

Mountains

Indian

Springs

Spotted Range

Mercury

FRENCHMAN

FLAT

BUCKBOARD MESA

FRENCHMAN

FLAT

YUCCA

FLAT

Halfpint Range

JACKASS

FLATS

Shoshone

Mountain

Greenwater

Range

Furnace

Creek

CRATER

FLAT

Specter Range CF-2

JF-2a JF-2

J-13

J-11

JF-3

RV-1

MV-1

AD-1

AD-2

AD-5

AD-4a

AD-6

AD-8

AD-10

AM-1 AM-2

AM-3 AM-4,5

DV-3

AD-13

AD-14 AD-11

AD-12

AM-1a

AM-5a

AM-8

DV-2

DV-1

J-12

JF-1

AD-2a

CF-1a

AM-6,7

CF-2

JF-2a JF-2

J-13

J-11

JF-3

RV-1

MV-1

AD-1

AD-2

AD-3a

AD-5

AD-4a

AD-6

AD-8

AD-7a

AD-9a

AD-10

AM-1 AM-2

AM-3 AM-4,5

DV-3

AD-13

AD-14 AD-11

AD-12

AM-1a

AM-5a

AM-8

DV-2

DV-1

J-12

JF-1

AD-2a, 2b

CF-1a

AM-6,7

PAPOOSE

LAKE

VALLEY

GROOM LAKE

VALLEY

THREE

LAKES

VALLEY

THREE

LAKES

VALLEY

Bare Mountain

MERCURY

VALLEY

ASH

MEADOWS SUBBAS NI

OASIS VALLEY SUBBASIN

ASH

MEADOWS SUBBAS NI

I

OASIS VALLEY SUBBASIN

Meadows

Yucca Mountain

CF-3

OASIS

VALLEY

372

95

- C

ALKALI FLAT

FURNACE CREEK RAN

H SUBBASIN

C

ALKALI FLAT-FURNACE CREEK RAN

H SUBBASIN

CF-1

Fortymile

AD-6

CF-2

AD-1

DV-2

DV-1 Combined carbonate rock and basin fill

Undifferentiated sedimentary rock

Basin fill

Volcanic rock

Carbonate rock

Data-collection site—Site number (table 1) 

 and primary contributing unit are indicated

Hydrographic-area boundary

Ground-water subbasin boundary—

 From Laczniak and others (1996, pl. 1). 

 Queried where location uncertain

Study-area boundary

EXPLANATION

NEVADA

CALIFORNIA

MAP

AREA

Base from U.S. Geological Survey digital elevation data, 1:250,000, 1987, and digital data,

1:100,000, 1981-89; Universal Transverse Mercator projection, Zone 11. Shaded-relief base

from 1:250,000-scale Digital Elevation Model; sun illumination from northwest at 30

degrees above horizon.

37°00'

117°00' 116°30' 116°00'

36°30'
Ash Meadows Ground-Water Subbasin

Part of Rock Valley, Mercury Valley, and most of the 

eastern part of the Amargosa Desert are within the Ash Meadows subbasin (fig. 1). The southeastern part of the Amargosa 

Desert includes the Ash Meadows spring-discharge area. The 

Ash Meadows spring-discharge area is a gently sloping land 

watered by numerous springs (Dudley and Larson, 1976, p. 5) 

at the southwestern edge of the subbasin.

Principal sources of ground water in the Ash Meadows 

ground-water subbasin are precipitation and subsurface inflow 

(Laczniak and others, 1996, table 3). Precipitation occurs 

mainly on the higher mountains within the subbasin and 

along the subbasin’s north and northeast mountainous boundaries. Subsurface inflow may occur from Railroad Valley 

and Pahranagat Valley along the basin’s north and northeast 

boundaries (about 100 mi north of Ash Meadows; Winograd 

and Thordarson, 1975; Laczniak and others, 1996). Ground 

water discharges from springs and as evapotranspiration in the 

Ash Meadows area and, possibly, as underflow into the Alkali 

Flat–Furnace Creek Ranch ground-water subbasin. Ground 

water in the subbasin generally flows to the south, west, or 

southwest (Harrill and others, 1988, sheet 2; Laczniak and 

others, 1996, p. 16–18 and pl. 1).

Data-Collection Sites

Locations of data-collection sites are shown in figure 1. 

Information on site identification, site location, site owner, and 

type of data contained in this report are listed in table 1. The 

sequence of sites in table 1 is followed throughout the report. 

Table 1. Index to monitoring sites in Yucca Mountain region, 2004—Continued.

Site

 number

U.S. Geological

Survey site

identification

Site name

Latitude

(degrees,

minutes,

seconds)

Longitude

(degrees,

minutes,

seconds)

Local site number Owner Data

 type

CF-1 365520116370301 Crater Flat 1 365515 1163655 229 S12 E48 04DBB1 Rayrock Mines, Inc. L

CF-1a 365445116383901 Crater Flat 1a 365442 1163841 229 S12 E48 07ADD1 Rayrock Mines, Inc. L

CF-2 364732116330701 USW VH-1 364732 1163307 229 S13 E48 27C1 DOE L

CF-3 364105116302601 Crater Flat 3 364106 1163026 229 S14 E48 36DDD1 Cind-R-Lite Block Company L

JF-1 365116116233801 UE-25 WT 15 365116 1162338 227A S12 E50 33A1 DOE L

JF-2 364945116235001 UE-25 WT 13 364943 1162351 227A S13 E50 18B1 DOE L

JF-2a 364938116252102 UE-25p 1 PTH 364938 1162521 227A S13 E49 14A2 DOE L

J-13 364828116234001 J-13 WW 364829 1162340 227A S13 E50 19C1 DOE L

J-11 364706116170601 J-11 WW 364706 1161706 227A S13 E51 31B1 DOE L

J-12 364554116232401 J-12 WW 364554 1162324 227A S14 E50 06A2 DOE L

JF-3 364528116232201 JF-3 Well 364528 1162322 227A S14 E50 06D1 DOE L

RV-1 363815116175901 TW-5 363815 1161759 226 S15 E50 24A1 DOE L

MV-1 363530116021401 Army 1 WW 363530 1160214 225 S16 E53 05ADB1 DOE L

AD-1 364141116351401 NA-6 Well 

BGMW-10 

364131 1164114 230 S14 E47 32DA1 USGS L

AD-2 363830116241401 Airport Well 363824 1162434 230 S15 E49 24ABB1 Doing, Warren L

AD-2a 363835116234001 NDOT Well 363836 1162356 230 S15 E50 18CCDB1 NV Dept. of Transportation L

AD-2b 363835116234002 NDOT Well 2 363836 1162357 230 S15 E50 18CCDB2 NV Dept. of Transportation L

AD-3a 363521116352501 Amargosa Desert 3a 363526 1163527 230 S16 E48 05CAB1 Davidson, Robert L

AD-4a 363428116234701 Amargosa Desert 4a 363429 1162349 230 S16 E50 07CABB1 Cook, Lewis C. L

AD-5 363310116294001 USBLM Well 363323 1162943 230 S16 E49 18DCCA1 BLM L

Table 1. Index to monitoring sites in Yucca Mountain region, 2004.

Site number: Alphanumeric identifier used to identify sites on maps and tables. First part represents hydrographic area in which sites are located. Hydrographic 

areas: CF, Crater Flat; JF or J, Jackass Flats; RV, Rock Valley; MV, Mercury Valley; AD or AM, Amargosa Desert; DV, Death Valley. Second part is sequential 

numbering representing relative location of site within hydrographic area or Ash Meadows spring-discharge area; numbering order generally is north to south, then 

west to east. Sites J-13, J-11, and J-12 previously were numbered by Raytheon Services Nevada and herein were not renumbered.

U.S. Geological Survey site identification: Unique identification number for sites as stored in files and data bases of U.S. Geological Survey.

Latitude and Longitude: Referenced to North American Datum of 1927. May be revised based on the subsequent availability of GPS values or more accurate maps.

Local site number: Alphanumeric identifier based on location of site within hydrographic areas and rectangular subdivisions of public lands. Referenced to Mount 

Diablo baseline and meridian for sites in Nevada or San Bernardino base line and meridian for sites in California (U.S. Geological Survey, 1986a, b).

Owner: Acronyms listed for sites owned by Federal agencies: BLM, Bureau of Land Management; DOE, U.S. Department of Energy; NPS, National Park Service; USFWS, U.S. Fish and Wildlife Service; USGS, U.S. Geological Survey.

Data type: Type of data included in this report. D, ground-water discharge; L, ground-water level.

   Selected Ground-Water Data for Yucca Mountain Region, January–December, 2004
Table 1. Index to monitoring sites in Yucca Mountain region, 2004—Continued.

Site

 number

U.S. Geological

Survey site

identification

Site name

Latitude

(degrees,

minutes,

seconds)

Longitude

(degrees,

minutes,

seconds)

Local site number Owner Data

 type

AD-6 363213116133800 Tracer Well 3 363213 1161338 230 S16 E51 27BAA3 USGS L

AD-7a 363009116302702 Amargosa Desert 7a 363029 1163024 230 S17 E48 01ABA1 Naxos Mining Company L

AD-8 362929116085701 Amargosa Desert 8 362906 1160924 230 S17 E52 08CBD1 Clark, Hershel and others L

AD-9a 362835116264102 Amargosa Desert 9a 362837 1162649 230 S17 E49 15BC 2 Gilgan, Michael L

AD-10 362525116274301 NA-9 Well 362531 1162745 230 026N005E05F001S USGS L

AD-11 361954116181201 GS-3 Well 361955 1161751 230 S19 E50 01BBD1 USGS L

AD-12 362014116133901 GS-1 Well 362022 1161327 230 S18 E51 34CBD1 USGS L

AD-13 361724116324201 S-1 Well 361734 1163258 230 025N004E21M001S USGS L

AD-14 361817116244701 Death Valley Jct 

Well

361816 1162447 230 025N005E14M001S Ettie, Lee L

AM-1 362858116195301 Rogers Spring Well 362855 1161949 230 S17 E50 10CDD1 USFWS L

AM-1a 362924116203001 Fairbanks Spring 362926 1162028 230 S17 E50 09AD1 USFWS D

AM-2 362755116190401 Five Springs Well 362753 1161906 230 S17 E50 23BBC1 USFWS D,L

AM-3 362555116205301 Ash Meadows 3 362556 1162051 230 S17 E50 33CAA1 Garner, George L

AM-4 362532116172700 Devils Hole 362532 1161727 230 S17 E50 36DC1 NPS L

AM-5 362529116171100 Devils Hole Well 362529 1161715 230 S17 E50 36DDC1 USFWS L

AM-5a 362502116192301 Crystal Pool 362513 1161927 230 S18 E50 03ADBA1 USFWS D

AM-6 362432116165701 Point of Rocks 

North Well

362434 1161657 230 S18 E51 07BBBB1 USFWS L

AM-7 362417116163600 Point of Rocks 

South Well

362420 1161637 230 S18 E51 07BDB1 USFWS L

AM-8 362230116162001 Big Spring 362229 1161625 230 S18 E51 19ACB1 USFWS D

DV-1 362728116501101 Texas Spring 362728 1165011 243 027N001E23BS01S NPS D

DV-2 362252116425301 Navel Spring 362252 1164253 243 026N002E13FS01S U.S. Borax & Chem. Corp. D

DV-3 362230116392901 Travertine Point 1 

Well

362231 1163932 243 026N003E21L001S U.S. Borax & Chem. Corp. L

All sites are boreholes or springs except site AM­-4 (Devils 

Hole), which is an open fissure that intersects the groundwater table. Borehole-construction data, source of boreholeconstruction data, and contributing lithologic units are listed 

in table 2. Excluded from table 2 are springs and a fissure for 

which construction data are not applicable.

Contributing units (table 2) are the principal saturated 

lithologic intervals at the sites that yield water to the borehole. 

For purposes of this report, contributing units are one or a 

combination of four general types: carbonate rock, volcanic 

rock, basin-fill deposits, and undifferentiated sedimentary 

rock. Boreholes characterized as having a contributing unit 

of carbonate or volcanic rock are wells with open intervals in 

those consolidated rocks. In and near the Amargosa Desert, 

boreholes characterized as having a contributing unit of basin 

fill are those with open intervals in unconsolidated basin-fill 

deposits. Boreholes with open intervals in rocks that include 

argillite, limy sandstones and siltstones, or silty, sandy, and 

shaley limestones are characterized as having a contributing 

unit of undifferentiated sedimentary rock. Contributing units 

are identified by Dudley and Larson (1976), McKinley and 

others (1991), Robison and others (1988), Thordarson and others (1967), Winograd and Thordarson (1975), or were derived 

from drillers’ logs or well-completion reports that describe 

geology in the boreholes, open intervals in the boreholes, and 

measurements of depth to water.

Ground-Water Levels

Ground-water levels are reported as depths to water and 

altitudes of the water surface. Depth to water is the difference 

between land surface and the water level in a borehole. Altitude of the water surface is the difference between the water 

level in a borehole and a point referenced to a common datum.

Depth to water is measured directly from a stable reference that is called the measuring point. Depth-to-water below 

a measuring point commonly is measured with a steel tape, an 

electric tape, or a pressure sensor. Measuring points typically 

are a marked point on the borehole’s casing, but can be the top 

of a bolt as at Devils Hole (AM-­4). Depth to water is computed by subtracting the height of a measuring point above 

land surface from the depth to water below a measuring point.

Ground-Water Levels 
Table 2. Borehole-completion data at monitoring sites in Yucca Mountain region—Continued.

Site

number

(fig. 1)

U.S. Geological

Survey site

identification

Site name

Accessible 

borehole depth

(feet below

land surface)

Casing 

diameter at

land surface

(inches)

Open interval

Data

source

Contributing

 units

Feet below

land surface Diameter

(inches) Type Top Bottom

CF-1 365520116370301 Crater Flat 1 1,600 15 800 1,600 10

P

D

V

CF-1a 365445116383901 Crater Flat 1a 700 7 208 313 6 P

D S

513 618 6 P658 700 6 P

CF-2 364732116330701 USW VH-1 2,501 10 911 912 9 X

R

V

912 2,501 6 X

CF-3 364105116302601 Crater Flat 3 460 9 320 460 8 P

D

F

JF-1 365116116233801 UE-25 WT 15 1,360 11 127 130 15

X

D

V

130 1,360 9 X

JF-2 364945116235001 UE-25 WT 13 1,160 11 222 224 15

X

D

V

224 1,150 9 X

1,150 1,160 8 X

JF-2a 364938116252102 UE-25p 1 PTH 5,923 24 4,256 4,279 10

X

R

C

4,279 5,900 7 X5,900 5,923 6 X

Table 2. Borehole-completion data at monitoring sites in Yucca Mountain region.Site number: Alphanumeric identifier used to identify sites on maps and tables. First part represents hydrographic area in which site is located. Hydrographic areas: CF, Crater Flat; JF or J, Jackass Flats; RV, Rock Valley; MV, Mercury Valley; AD or AM, Amargosa Desert; DV, Death Valley. Second part is sequential numbering representing relative location of site within hydrographic area or Ash Meadows springdischarge area; numbering order generally is north to south, then west to east. Sites J-13, J-11, and J-12 previously were numbered by Raytheon Services Nevada and herein were not renumbered.U.S. Geological Survey site identification: Unique identification number for sites as stored in files and data bases of U.S. Geological Survey (USGS).Accessible borehole depth: Borehole depths listed are as reported in sources listed in explanation for Data source (see below) or as measured by USGS personnel (noted with ‘s’).Casing diameter at land surface: Outside casing diameter of segment most prominent at land surface; rounded to nearest inch.Top of open interval: Depth to top part(s) of borehole that can receive ground water from lithologic interval. Uncased borehole is designated open interval in this table. Open interval may be deeper than accessible borehole depth, which may reflect original drilled depth. As reported in sources listed in explanation for Data source (see below). U, unknown, no data.Bottom of open interval: Depth to bottom part(s) of borehole that can receive ground water from lithologic interval. Uncased borehole is designated open interval in this table. Open interval may be deeper than accessible borehole depth, which may reflect original drilled depth. As reported in sources listed in explanation for Data source (see below). U, unknown, no data.Diameter of open interval: Inside casing diameter; rounded to nearest inch. Hole diameter is listed where no casing is present. U, unknown, no data.Type of open interval: Description of open interval. P, perforated or slotted casing; S, screened casing, type not known; U, unknown, no data; X, uncased borehole.Data source: Source of information on borehole depth and open intervals. D, Well-driller’s log, well-completion report, Fenix & Scisson, Inc., or Raytheon Services Nevada hole-history data; J, Johnston (1968); M, no source, data not available; O, Owner of well; R, Robison and others (1988); T, Thordarson and others (1967).Contributing units: Saturated lithologic interval yielding water to borehole. C, carbonate rock; F, basin fill; S, undifferentiated sedimentary rock; V, volcanic rock.

   Selected Ground-Water Data for Yucca Mountain Region, January–December, 2004
Table 2. Borehole-completion data at monitoring sites in Yucca Mountain region—Continued.

Site

number

(fig. 1)

U.S. Geological

Survey site

identification

Site name

Accessible 

borehole depth

(feet below

land surface)

Casing 

diameter at

land surface

(inches)

Open interval

Data

source

Contributing

 units

Feet below

land surface Diameter

(inches) Type Top Bottom

J-13 364828116234001 J -13 WW 3,488 13 996 1,301 13 P T V

1,301 1,386 11 P2,690 3,312 5 P3,385 3,488 8 X

J-11 364706116170601 J -11 WW 1,327 13 1,075 1,095 12 P D V

1,242 1,298 12 P

J-12 364554116232401 J -12 WW 1,139 13 793 868 12 P D V

887 1,139 12 X

JF-3 364528116232201 JF- 3 Well 1,138 9 735 1,138 8 P D VRV-1 363815116175901 TW- 5 800.s 7 735 800 6 P T S

800 916 U X

MV-1 363530116021401 Army 1 WW 1,953 11 800 1,050 11 P D C

1,368 1,370 10 X1,370 1,684 9 X1,684 1,953 7 X

AD-1 364141116351401 NA-6 Well BGMW-10 960 2 930 940 2 S D FAD-2 363830116241401 Airport Well 750.s 14 360 777 14 P D FAD-2a 363835116234001 NDOT - Well 495 9 395 495 8 P D FAD-2b 363835116234002 NDOT - Well 2 518 8 418 518 8 P D FAD-3a 363521116352501 Amargosa Desert 3a 240.s 16 120 250 15 P D FAD-4a 363428116234701 Amargosa Desert 4a 269.s 13 147 213 12 P D F

238 286 12 P

AD-5 363310116294001 USBLM Well 348.s 12 U U U U M FAD-6 363213116133800 Tracer Well 3 678.s 9 620 807 6 X J CAD-7a 363009116302702 Amargosa Desert 7a 210 7 U U U U O FAD-8 362929116085701 Amargosa Desert 8 215.s 15 U U U U M F

Ground-Water Levels   
Table 2. Borehole-completion data at monitoring sites in Yucca Mountain region—Continued.

Site

number

(fig. 1)

U.S. Geological

Survey site

identification

Site name

Accessible 

borehole depth

(feet below

land surface)

Casing 

diameter at

land surface

(inches)

Open interval

Data

source

Contributing

 units

Feet below

land surface Diameter

(inches) Type Top Bottom

AD-9a 362835116264102 Amargosa Desert 9a 515 10 55 200 10

P

D

F

200 515 10

X

AD-10 362525116274301 NA-9 Well 1,090 2 1,063 1,066 2 S D

F

AD-11 361954116181201 GS-3 Well 2,000 2 1,969 1,979 2 S D

F

AD-12 362014116133901 GS-1 Well 1,580 2 1,549 1,559 2 S D

F

AD-13 361724116324201 S-1 Well 2,000 2 1,969 1,979 2 S D

F

AD-14 361817116244701 Death Valley Jct Well 225.s 12 160 200 12 S D

F

AM-1 362858116195301 Rogers Spring Well 202.s 16 100 240 12

P

D

F

240 420 16

X

AM-2 362755116190401 Five Springs Well 123.s 14 0 100 13

P

D

C

100 140 14

X

AM-3 362555116205301 Ash Meadows 3 202.s 9 140 180 8 P

O

F

AM-5 362529116171100 Devils Hole Well 200.s 16 48 248 16

P

D

F

AM-6 362432116165701 Point of Rocks North Well 500 16 139 500 16

P

D

F

AM-7 362417116163600 Point of Rocks South Well 586.s 14 132 467 14

P

D

C

468 818

U

X

DV-3 362230116392901 Travertine Point 1 Well 650.s 5 100 970 5 X

D

C

   Selected Ground-Water Data for Yucca Mountain Region, January–December, 2004
Ground-water altitude is the difference between altitude 

of the measuring point and depth to water below the measuring point. The altitudes of all measuring points were surveyed. 

Altitudes at sites AD-9a and AM-2 were determined using 

survey grade Global-Positioning Systems (stationary systems 

left onsite for a minimum of 2 hours). Ground-water altitude is 

reported to indicate the general direction of ground-water flow.

Accuracy of depths to water and altitudes of the water 

surface contained in this report are variable. The level of accuracy at each borehole is dependent largely on determinations 

of heights of measuring points above land surface, surveying 

techniques, altitudes of benchmarks used as starting points 

for surveys, and deviations of borehole orientation from true 

vertical.

Precision of depths to water and altitudes, however, can 

be used to detect changing conditions through time. Precision is indicated by repeatability of water-level measurements (sequential measurements of similar conditions). Data 

recorded in the field during 2004 indicate that measurement 

precision generally is less than or equal to 0.02 ft for calibrated electric tapes and steel tapes. Overall, precision of 

water levels contained in this report are estimated to be less 

than or equal to 0.05 ft. On the basis of sequential measurements at sites with similar depths to water, precision of data 

collected by other agencies using uncalibrated electric tapes is 

assumed to be comparable.

Table 3 (see Basic Data section) lists periodic measurements of depth to water and water-level altitude for 2004 and 

figures 2–5 (see Basic Data section) show measurements of 

water levels from the earliest available information through 

2004. The graphical ground-water data were selected from the 

tables in this and previously published reports for the Yucca 

Mountain region. Pumping water from or injecting water into 

a well or nearby well may result in short-term variations in 

water levels that differ from long-term or sustained groundwater levels. Such short-term variations are excluded from the 

figures showing variations in water levels through time.

Periodic data usually are from manual onsite measurements of depth to water. Exceptions are water-level data noted 

with data source “HRC” and method “F” in table 3. These data 

were derived from measurements by onsite instrumentation. 

Also included in table 3 are revised water-surface altitudes 

for site AM-2 for calendar years 1990 through 2003 (on the 

basis of a new survey of the altitude for the measuring point) 

and calendar year 2000 through 2003 measurements of water 

levels at monitoring sites made by data source “NWRPO.” 

All water-level data collected by other agencies or programs 

are subject to revision upon further review by that agency or 

program.

 Listed in tables 4 and 5 (see Basic Data section) are 

daily mean water levels for sites JF-­3 and AD­-6, respectively, 

for 2004. Figure 6 (see Basic Data section) shows daily 

mean water levels at sites JF­-3 and AD­-6 as listed in this and 

previous reports on selected ground-water data for the Yucca 

Mountain region.

Electric Tape

Electric tapes used by USGS-EMP personnel were 

marked with a unique identifier for quality-assurance purposes 

and calibrated using reference steel tapes (which serve as 

accepted representations of depth to water below the measuring point). At depths greater than 500 ft, the electric tapes 

were calibrated using the HRC 2,800­ft reference steel tape or 

the USGS-EMP calibrated steel tape (chain #5). At depths less 

than 500 ft, the electric tapes were calibrated using a steel tape 

maintained by USGS-EMP personnel and identified as the 

500­ft reference steel tape #1.

HRC 2,800­ft reference steel-tape measurements are 

adjusted to account for mechanical stretch and thermal expansion of the tape. USGS-EMP chain #5 steel-tape measurements are adjusted to account for differences between the 

HRC reference and USGS-EMP chain #5. No adjustments 

were necessary for the USGS-EMP 500­ft reference steel tape 

#1 because mechanical stretch and thermal expansion of the 

tape are considered negligible at the depths to water measured.

A correction factor (table 6) is the difference between the 

reference steel-tape measurement and uncorrected electrictape measurement. Differences exist between the reference 

steel tape and the electric tape because of mechanical stretch, 

shrinkage caused by decreased elasticity, shortening caused by 

the presence of kinks or twists in tape, and incorrect marking. 

Correction factors are computed for individual measurements 

using calibration data collected at specific depths and times. 

Although changes in factors probably are not linear, correction 

factors for individual measurement are on the basis of linear 

interpolations with depth and time between factors determined 

during successive calibrations.

Water-level measurements made during site visits are 

adjusted on the basis of correction factors computed from 

calibrations before and after the individual measurements. 

For example, the correction factor for a water-level measurement of 625.81 ft on 01/21/2004 using electric tape YMP-13 

would be computed from calibration data collected at 605.08 

ft and 743.76 ft in October 2003 and calibration data collected 

at 605.12 ft and 743.82 ft in February 2004. The water-level 

measurement made on site would subsequently be adjusted 

according to that computed correction factor.

Calibrated electric tapes were used at wells when 

frequent repetitive measurements were required due to 

fluctuating water levels, when depths to water were greater 

than 500 ft, or when wet conditions inside a well prevented 

measurements using chalked steel tapes. At least two measurements are made during each site visit. The secondary 

measurement serves as a check of first measurement and the 

initial measurement is reported. Supplemental measurements 

are made if the two measured depths differ by more than 0.05 

ft. If supplemental measurements indicate the difference is 

due to rapidly changing water levels, the measured depth and 

appropriate site status are recorded.

Ground-Water Levels 
Personnel of the HRC made water-level measurements 

using calibrated electric tapes at sites CF­-2, JF-­1, JF-­2, 

JF­-2a, J-­13, J­-11, and J-­12. These data-collection activities 

are governed by formal, unpublished technical procedures 

associated with the Yucca Mountain Office of Civilian 

Radioactive Waste Management. 

For measurements made by HRC personnel, depth to water 

was computed by subtracting the reported water-level altitude 

from the altitude of the land surface (determined to the nearest 

hundredth of a foot during surveys).

Personnel associated with the NWRPO also made 

water-level measurements using calibrated electric tapes at 

sites AD-3a, AD-5, AD-9a, and AD-10. That data collection is governed by a technical procedure available from the 

Nye County Nuclear Waste Repository Project Office (2006). 

USGS personnel associated with the U.S. Department of 

Energy, National Nuclear Security Administration, Nevada 

Site Office made a water-level measurement using a calibrated 

electric tape at site J-13 in accordance with program-specific 

procedure NV-NTS-1, R0 (Robert P. Graves, U.S. Geological Survey, written commun., 2006). Additional water-level 

measurements were made with various electric tapes by the 

USFWS at sites AM-1, AM-5, AM-6, and AM-7, by NDWR 

at site AD-7a, and by Bechtel Nevada at site J-11.

Steel Tape

In 2004, USGS-EMP personnel used one uniquely 

marked 300-ft steel tape (ST-7) and one uniquely marked 

500-ft steel tape (ST-10) for measurements. These steel tapes 

were checked against the USGS-EMP 500ft reference steel 

tape #1 at several depths to water to define their accuracy. No 

corrections were needed to the measurements made with these 

steel tapes.

USGS-EMP personnel make a minimum of two measurements during each site visit to verify the initial measurement. 

The secondary measurement serves as a check of first and the 

initial measurement is reported when the two are within 0.05 

ft. Supplemental measurements are made if the two measured 

depths differ by more than 0.05 ft. If supplemental measurements indicate the difference is due to fluctuating water levels, 

the measured depth and appropriate site status are recorded.

Pressure Sensor

Two sites, JF­-3 and AD­-6, are instrumented by USGSEMP to continually record ground-water level and atmospheric 

pressure at 15­minute intervals. Instrumentation includes a 

vented pressure sensor installed below the water surface, a 

barometer, and a data logger. Recorded data are processed 

to produce data on continual depth to water, atmospheric 

pressure, and daily mean depth to water. The pressure sensors 

at sites JF­-3 and AD-­6 transmit data to the data logger in units 

of pounds per square inch, which varies with the height of the 

water above the sensor.

The pressure sensor is calibrated at each site for a range 

of depths that spans the anticipated range of water-level 

fluctuations. Water-level fluctuations are simulated by raising 

and lowering the pressure sensor. Raising the sensor 1 ft will 

decrease the amount of submergence of the pressure sensor by 

1 ft, thereby decreasing the water pressure exerted on the sensor and simulating a 1 ft increase in depth to water. Lowering 

Table 6. Electric-tape calibration data used to derive correction 

factors, 2004.

Uncorrected depth to water: Measured depth to water below measuring point 

using electric tape.

Device: Electric tape used to measure depth to water.

Correction Factor: Difference between depth to water measurements using 

reference steel tape and electric tape.

[Abbreviations: YMP-11, 1,000-foot electric tape; YMP-13, 1,000-foot 

electric tape; PRT-2, 2,000-foot electric tape; PRT-4, 2,000-foot electric tape]

Date Uncorrected

depth to 

water (feet)

Device Correction

factor

(feet)

02/04/2004 605.20 YMP-11 -0.34

02/24/2005 605.10 YMP-11 -0.33

02/04/2004 743.80 YMP-11 -0.33

02/23/2005 743.78 YMP-11 -0.43

03/02/2005 920.56 YMP-11 -0.47

 

02/25/2005 20.06 YMP-13 -0.03

10/14/2003 133.98 YMP-13 -0.04

02/11/2004 134.02 YMP-13 -0.04

02/25/2005 135.88 YMP-13 -0.04

10/14/2003 368.46 YMP-13 -0.13

 

02/11/2004 369.62 YMP-13 -0.13

02/24/2005 368.58 YMP-13 -0.15

10/08/2003 605.08 YMP-13 -0.21

02/04/2004 605.12 YMP-13 -0.26

02/24/2005 605.00 YMP-13 -0.23

 

10/07/2003 743.76 YMP-13 -0.33

02/04/2004 743.82 YMP-13 -0.35

02/23/2005 743.70 YMP-13 -0.35

03/02/2005 920.56 YMP-13 -0.47

 

02/04/2004 743.59 PRT-2 -0.12

02/23/2005 743.51 PRT-2 -0.16

03/02/2005 920.28 PRT-2 -0.19

02/05/2004 1042.61 PRT-2 -0.14

02/23/2005 1042.40 PRT-2 -0.16

 

02/05/2004 1137.47 PRT-2 -0.16

02/28/2005 1137.14 PRT-2 -0.15

02/28/2005 1319.84 PRT-2 -0.14

 

01/22/2003 744.52 PRT-4 -0.79

02/04/2004 744.39 PRT-4 -0.92

10/08/2003 1043.50 PRT-4 -1.18

02/05/2004 1043.70 PRT-4 -1.23

10/07/2003 1138.28 PRT-4 -1.22

 

02/05/2005 1138.60 PRT-4 -1.29

01/22/2003 1321.28 PRT-4 -1.16

10/07/2003 1321.02 PRT-4 -1.26

10 Selected Ground-Water Data for Yucca Mountain Region, January–December, 2004
the sensor 1 ft will increase the amount of submergence of the 

pressure sensor by 1 ft, thereby increasing the water pressure 

exerted on the sensor and simulating a 1 ft decrease in depth to 

water. Upon completion of pressure-sensor calibration, another 

water-level measurement is made with a calibrated steel or 

electric tape to check for fluctuation of the water level during 

calibration of the sensor.

Data recorded while calibrating the sensor are used to 

develop a regression equation to convert pressure readings to 

water level below land surface. The pressure readings from the 

data logger and corresponding simulated depths are regressed 

using pressure, in pounds per square inch, as the independent 

variable and depth below land surface, in feet, as the dependent variable.

Water-level measurements are made with a calibrated 

steel or electric tape when a continual monitoring site is 

visited. The data logger records the pressure-sensor reading 

at the time of the measurement. The reading is converted to 

depth to water using the established regression equation and 

recorded on a field sheet as computed water level. The steel 

tape or electric tape water-level reference measurement is then 

compared to the computed value. Any difference between 

the reference measurement and computed value is applied 

as a correction to the continual record. The correction is 

determined by linearly interpolating the difference with time 

between consecutive visits to account for drift in pressuresensor output.

The applicable period for using a particular regression 

equation usually corresponds with calibrations at the beginning and ending of a period. If the applicable period for a 

regression equation does not correspond with calibrations, an 

applicable period is selected to minimize differences between 

reference measurements made during site visits and computed water levels. Equations developed from pressure-sensor 

calibration data, applicable periods for equations, and differences between reference and computed water levels are listed 

in table 7.

Sites JF-2 and JF-2a also were instrumented to collect 

continual water-level data by HRC personnel. Data collection 

and processing of these data are governed by formal, unpublished technical procedures associated with the Yucca Mountain Office of Civilian Radioactive Waste Management.

Ground-Water Discharges

Ground-water discharges are reported to two significant 

figures and range from 0.82 gal/min at site DV­-2 to 3,100 

gal/min at site AM­-5a. The accuracy of the measurements are 

related directly to the operational conditions of the equipment 

and to the environmental conditions at the time of measurement.

Measurements of ground-water discharge for 2004 are 

listed in table 8 (see Basic Data section). Measurements of 

ground-water discharge from the earliest available information 

through 2004 are shown in figures 7–9 (see Basic Data 

section). Discharge measured at site AM-2 represents a combination of flow directly through slotted casing at land surface 

and leakage through the casing’s annular space. The increased 

discharge at site AM­-2 in 1996 probably is attributable to 

clearing the uppermost portion of annular space surrounding 

the casing. Data for site DV­-1 (table 8), reported with data 

source “NPS,” represent monthly mean discharge collected 

from instrumentation operated by the NPS and are reported 

for the 15th of the month on the basis of daily data collected by 

NPS. Discharge data collected by other agencies or programs 

are subject to revision upon further review by that agency or 

program.

The most commonly used method for measuring discharge was the vertical-axis current meter or acoustic-doppler 

velocimeter. Accuracy of these measurements are estimated to 

be poor, or no better than 15 percent of actual flow (Rantz and 

others, 1982, p. 179–180; U.S. Geological Survey, 2004).

Some discharge values were determined by measuring 

the depth of water inside a flume and comparing that depth to 

an applicable stage-discharge relation for the flume. Where 

an instrument has been installed to continually record stage in 

a flume, mean discharges can be computed for specific times 

or periods. Accuracy of these measurements is estimated to 

be fair or within 15 percent of actual flow (U.S. Geological 

Survey, 2005).

The volumetric method was used for measuring groundwater discharge from sites AM­-2 and DV­-2. A 5-gal or 4-L 

container was used to collect all discharge from the sites while 

a stopwatch was used to determine the amount of time the 

discharge was collected. The discharge rate is the volume of 

discharge collected divided by the elapsed time of collection. 

This method was repeated a minimum of three times and an 

average rate was computed for each site visit. Accuracy of 

these measurements is estimated to be good or within 10 percent of actual flow (U.S. Geological Survey, 2005).

Ground-Water Withdrawals

Withdrawals were estimated from data provided by 

NDWR, DOE, and USGS personnel associated with DOE’s 

Hydrologic Resources Management Program. The majority 

of data sources report data in gallons and for consistency all 

withdrawals presented in tables and figures in this report are 

converted to units of millions of gallons. Estimated annual 

ground-water withdrawals are based solely on available data. 

Years during which no withdrawals from a specific area are 

indicated may reflect the unavailability of data rather than the 

absence of withdrawals. In these instances, withdrawal may be 

underestimated.

Estimates of ground-water withdrawals from wells in the 

Yucca Mountain region for 2004 are listed in table 9 (see Basic 

Data section). General locations of ground-water withdrawals 

during 2004 are shown in figure 10 (see Basic Data section). 

General areas of ground-water withdrawals for all uses

are townships and ranges or are portions of townships 

and ranges in which the majority of ground-water 

Ground-Water Withdrawals 11
Table 7. Summary of pressure-sensor calibrations and associated error at boreholes JF-3 and AD-6, 2004.

[ft, feet; >, greater than value indicated; –, not applicable for January–December 2004]

Site

number

(fig. 1)

Date

of

calibration

Regression

equation1

(ft below land surface)

Coefficient

of determination2 Number of points3 Equation applied Differences between measured and computed water levels4 Begin date End date Minimum (ft) Date Maximum (ft) Date

JF-3 01/15/2004 WL = (-2.328 x PSI) + 715.224 >0.99 11 04/28/2003 09/22/2004 0.04 02/12/2004 -0.05 08/12/2004

02/15/2005 WL = (-2.322 x PSI) + 715.389 >0.99 13 09/22/2004 12/31/2004 -0.02 10/25/2004 0.03 09/27/2004 and

12/14/2004

AD-6 01/16/2004 WL = (-2.310 x PSI) + 48.921 >0.99 13 08/28/1003 12/31/2004 -0.01 09/27/2004 0.02 01/16/2004, 

03/04/2004 and 06/08/2004

02/17/2005 WL= ( -2.316 x PSI) + 48.972 >0.99 15 – – – – – –

1 Equation developed to convert pressure readings (PSI) recorded by on-site instrumentation to water level in feet below land surface (WL).2 Value representing fraction of the total variation in water level that can be explained by variation in pressure. A value of 1.00 implies all variations in water level can be explained by 

 variations in pressure.

3 Number of pressure-sensor depths used to develop regression equation during calibration procedure.4 Differences between periodic water levels determined using electric or steel tapes and computed water levels determined by use of regression equation.

12 Selected Ground-Water Data for Yucca Mountain Region, January–December, 2004
withdrawals occurred. Figures 11–12 (see Basic Data section) show estimated withdrawals from wells from the earliest 

available information through 2004. Total bar heights shown in 

figures 11 and 12 equal the sum of withdrawals from all areas 

within the subbasin for a given year. Information on withdrawals provided by other agencies or programs is subject to revision upon further review by that agency or program.

Estimated ground-water withdrawals for calendar year 

2004 are listed by hydrographic area (Amargosa Desert, 

Crater Flat, Jackass Flats, and Mercury Valley) within the 

Alkali Flat–Furnace Creek Ranch and the Ash Meadows 

ground-water subbasins. The Amargosa Desert spans both 

subbasins and is further subdivided into two areas within the 

Ash Meadows ground-water subbasin.

Withdrawals for irrigation account for the majority of 

pumpage in the study area. Those withdrawals commonly are 

estimated by multiplying irrigated acreages by water-application rates. Irrigated acreage in the Amargosa Desert during 

2004, provided by NDWR, was about 2,444 acres. As per 

NDWR, the Amargosa Desert within the Alkali Flat–Furnace 

Creek Ranch subbasin has about 2,442 irrigated acres and the 

Amargosa Desert within the Ash Meadows subbasin has about 

2 irrigated acres. Application rates used by NDWR in 2004 

averaged about 4 acre-ft/acre but estimates of application rates 

in the Amargosa Desert by Moreo and others (2003) ranged 

from 2 to 12 acre-ft/acre and averaged about 7 acre-ft/acre. 

Withdrawals listed in this report, therefore, may be underestimated when a portion of the total withdrawal in an area is 

comprised of use for irrigation.

Withdrawals for domestic use account for the least pumpage within each part of the study area. Reported domestic 

use is based on the number and location of wells drilled for 

domestic purposes contained in the NDWR well-log database 

(at the time that pumpage inventories were prepared).

Withdrawals from Alkali Flat–Furnace Creek 

Ranch Ground-Water Subbasin

Withdrawals from the Amargosa Desert Hydrographic 

Area within the Alkali Flat–Furnace Creek Ranch groundwater subbasin (4,391 Mgal) were recompiled from a groundwater pumpage inventory made by NDWR for the entire 

Amargosa Desert. The pumpage inventory in 2004 includes 

estimated withdrawals for irrigation, mining, quasi-municipal 

and commercial, and domestic uses. Most reported withdrawals for the Amargosa Desert are from the Alkali Flat–Furnace 

Creek Ranch ground-water subbasin. Within this subbasin, 

ground-water withdrawals in the Amargosa Desert were used 

for irrigation (79 percent), mining (7 percent), quasi-municipal 

or commercial (11 percent), and domestic use (3 percent).

Withdrawals from Crater Flat of about 16 Mgal in 2004 

were determined from flowmeters at well USW VH-­2, and at 

sites CF­-2 and CF-­3. Estimated withdrawals for well USW 

VH-­2 (about 9 Mgal during 1996–2003; withdrawals in 

2004 were estimated to be comparable) and site CF­-3 (about 

7 Mgal) are from NDWR (Karl Eitenmiller, Nevada Department of Water Resources, written commun., 2004; Tim Hunt, 

Nevada Department of Water Resources, written commun., 

2005). Total withdrawals in 2004 for site CF-­2 are from DOE 

(Karen Bull, Bechtel SAIC Company, LLC, written commun., 

2005). Withdrawals from sites CF­-1 and CF­-1a during 2004 

are estimated as zero based on observations during site visits.

Withdrawals from Jackass Flats were determined from 

flowmeters at sites J-­13 and J­-12 during 2004. Ground-water 

withdrawals from site J-­12 accounted for about 84 percent 

of the roughly 14 Mgal total withdrawals from Jackass Flats. 

Withdrawals for 2004 at these sites were recompiled from 

flowmeter readings provided by Bechtel Nevada to USGS personnel associated with DOE’s Hydrologic Resources Management Program (U.S. Geological Survey, 2006).

Withdrawals from Rock Valley are considered negligible. 

The valley mostly is within the Nevada Test Site, which limits 

public access and use. Within the valley, no known DOE water 

supply wells exist, no pumpage is reported by DOE, and boreholes that are not pumped are not present in USGS or DOE 

databases.

Withdrawals from Ash Meadows Ground-Water 

Subbasin

Withdrawals from Mercury Valley of about 68 Mgal 

in 2004 were recompiled from flowmeter readings for site 

MV-­1. Periodic flowmeter readings were provided by Bechtel 

Nevada to USGS personnel associated with DOE’s Hydrologic 

Resources Management Program (U.S. Geological Survey, 

2006).

Withdrawals from the Amargosa Desert hydrographic 

area within the Ash Meadows ground-water subbasin also 

were recompiled from the ground-water pumpage inventory 

made by NDWR for the entire Amargosa Desert. In 2004, 

about 22 Mgal of water were withdrawn from the Amargosa 

Desert within the Ash Meadows ground-water subbasin. The 

Amargosa Desert within this subbasin has been divided into 

two areas to provide information on withdrawals in the immediate vicinity of the environmentally sensitive Ash Meadows 

area. These areas are identified as the Amargosa Desert 

(excluding Ash Meadows area) and the Amargosa Desert 

(Ash Meadows area). Only minor withdrawals for irrigation, 

quasi-municipal, or mining uses (each less than 1 Mgal) were 

reported from these two areas. During 2004, withdrawals in 

the Amargosa Desert (excluding Ash Meadows area) include 

irrigation and quasi-municipal withdrawals from three wells in 

T. 17 S., R. 52 E. Also during 2004, withdrawals for quasimunicipal and mining uses from the Amargosa Desert (Ash 

Meadows area) include withdrawals from two wells in T. 18 

S., R. 50 E. Within Ash Meadows subbasin, withdrawals for 

domestic use in 2004 from the two areas also were minor, 

about 12 and 2 percent, respectively, in comparison to total 

withdrawals for domestic use in the Amargosa Desert 

Hydrographic Area.

Ground-Water Withdrawals 13
Discussion of Ground-Water Levels 

and Ground-Water Withdrawals in 

Jackass Flats

Water-level altitudes for seven boreholes and estimated 

annual ground-water withdrawals in Jackass Flats from 1983 

through 2004 are shown in figure 13 (see Basic Data section). 

Annual ground-water withdrawals in Jackass Flats prior to 

1983 are excluded because those data generally represent only 

the withdrawals from borehole J-­12 rather than total withdrawals from Jackass Flats.

Water-level altitudes (fig. 13) are based on periodic measurements contained in this and previously published reports 

or are daily mean water levels provided by USGS-SCP personnel. Lines are dashed when no data are available.

Ground-water withdrawals in Jackass Flats increased 

from 13.5 Mgal in 2003 to 13.8 Mgal in 2004 and consisted 

of combined pumpage from water-supply boreholes J­-13 and 

J-­12. Withdrawals during 2004 were about 2 percent greater 

than withdrawals in 2003 and about 73 percent less than the 

median withdrawal of 52 Mgal for the period 1983–91 (La 

Camera and Westenburg, 1994, p. 30). Median water-level 

altitudes in Jackass Flats usually corresponded with increases 

or decreases in withdrawals, although changes in water levels 

may be due to changes in recharge to the ground-water system 

rather than withdrawals (Fenelon and Moreo, 2002, p. 54–58). 

Ground-water withdrawals from borehole J-­13 increased from 

about 0.7 Mgal in 2003 to about 2.2 Mgal in 2004. Groundwater withdrawals from borehole J­-12 decreased from about 

12.8 Mgal in 2003 to 11.6 Mgal in 2004.

Table 10 (see Basic Data section) contains selected 

statistics for water-level altitudes in Jackass Flats. Data for 

boreholes JF-­1, JF-­2, JF-­2a, J­-13, J­-11, J-­12, and JF-­3 are 

summarized for a baseline period of 1992–93 and for subsequent calendar years through 2004. For each period, the table 

lists the number of measurements, minimum, maximum, and 

median water-level altitude, and the average deviation of water 

levels from the median water level. Only one measurement 

was available for site JF-2 in 2002, therefore, no statistics were 

calculated for that year. Continual data for the period following 2001 that subsequently has been released to the public can 

be obtained from HRC personnel by contacting them directly 

at URL: <http://hrcweb.nevada.edu>. The period 1992–93 was 

selected as a baseline because it is the earliest period when 

data were available for all sites and data-collection frequency 

was roughly equivalent at any particular site during that time.

Median water-level altitudes indicate a statistically representative ground-water level for a particular time. Median 

water-level measurements are listed because the calculated 

median is less affected by a few high or low values than is the 

arithmetic mean.

The average deviation indicates the dispersion of individual measurements about the median; it provides an indication of how representative of a typical water-level altitude the 

median is during a particular period. The average deviation 

equals the sum of the absolute differences between individual 

measurements and the median, divided by the number of individual measurements. This measure of measurement spread 

was selected rather than standard deviation because it can be 

used to describe dispersion about a median value rather than 

dispersion about an arithmetic mean.

Figure 14 (see Basic Data section) shows the median 

water-level altitudes and the average deviation of the water 

levels for boreholes JF-­1, JF­-2, JF­-2a, J­-13, J­-11, J-­12, and 

JF­-3 for 1992–93 and for subsequent years through 2004. The 

average deviation of measurements at borehole JF-2 in 2004 

equaled 0.0; as a result no average deviation is indicated in 

figure 14 for that site and year. Median annual ground-water 

withdrawal in Jackass Flats for 1992–93 and estimated annual 

withdrawals for subsequent years through 2004 also are 

included.

From 2003 to 2004, median water-level altitudes in 

three of seven boreholes (JF-1, JF-2, and J-12) in Jackass 

Flats increased 0.1 ft. At one borehole in Jackass Flats (JF-3) 

median water-level altitude was unchanged from 2003 to 2004. 

At three additional boreholes (JF-2a, J-13, and J-11) in Jackass 

Flats median water-level altitudes decreased from 0.1 to 0.7 ft 

from 2003 to 2004. The 0.7 ft decrease in median water level 

and large average deviation of 0.6 ft at borehole J-13 may have 

resulted from pumpage of an unknown quantity of water from 

that borehole (the flowmeter was bypassed) following pump 

replacement in about April 2004.

The median water-level altitudes at six of seven monitoring boreholes (JF-1, JF-2, JF-2a, J-11, J-12, and JF-3) in 

Jackass Flats in 2004 were greater (0.3–2.7 ft) than their altitudes for the baseline period in 1992–93. At borehole J-13, the 

median water-level altitude equaled the altitude for the baseline period in 1992–93. All increases or decreases in median 

water-level altitudes exceeded historical variability in water 

levels exhibited during their baseline periods. Changes exceeding historical variability could be due to changes in monitoring instrumentation or frequency, limited lengths of historical 

baseline periods, withdrawals or recharge that differed from 

those during baseline periods, or a combination of effects.

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1989–91, Yucca Mountain area, Nevada: U.S. Geological 

Survey Open-File Report 94­-303, 9 p.

Cardinalli, J.L., Roach, L.M., Rush, F.E., and Vasey, B.J., 

1968, State of Nevada hydrographic areas: Nevada Division 

of Water Resources map, 1:500,000-scale.

Dudley, W.W., Jr., and Larson, J.D., 1976, Effect of irrigation 

pumping on desert pupfish habitats in Ash Meadows, Nye 

County, Nevada: U.S. Geological Survey Professional Paper 

927, 52 p.

14 Selected Ground-Water Data for Yucca Mountain Region, January–December, 2004
Fenelon, J.M., and Moreo, M.T., 2002, Trend analysis of 

ground-water levels and spring discharge in the Yucca 

Mountain region, Nevada and California, 1960–2000: U.S. 

Geological Survey Water-Resources Investigations Report 

02­-4178, 97 p.

Fenneman, N.M., 1931, Physiography of Western United 

States: New York, McGraw-Hill, 534 p.

Gemmell, J.M., 1990, Water levels in periodically measured 

wells in the Yucca Mountain area, Nevada, 1988: U.S. Geological Survey Open-File Report 90-113, 47 p.

Graves, R.P., 1998, Water levels in the Yucca Mountain area, 

Nevada, 1996: U.S. Geological Survey Open-File Report 

98-169, 81 p.

Graves, R.P., 2000, Water levels in the Yucca Mountain area, 

Nevada, 1997–98: U.S. Geological Survey Open-File 

Report 00-186, 81 p.

Graves, R.P., and Goemaat, R.L., 1998, Water levels in the 

Yucca Mountain area, Nevada, 1995: U.S. Geological Survey Open-File Report 97-101, 92 p.

Graves, R.P., Tucci, Patrick, and Goemaat, R.L., 1996, Water 

levels in the Yucca Mountain area, Nevada, 1994: U.S. Geological Survey Open-File Report 95-757, 101 p.

Hale, G.S., and Westenburg, C.L., 1995, Selected groundwater data for Yucca Mountain region, southern Nevada 

and eastern California, calendar year 1993: U.S. Geological 

Survey Open-File Report 95­-158, 67 p.

Harrill, J.R., Gates, J.S., and Thomas, J.M., 1988, Major 

ground-water flow systems in the Great Basin region of 

Nevada, Utah, and adjacent states: U.S. Geological Survey 

Hydrologic Investigations Atlas HA­-694­C, 2 sheets.

Harry Reid Center for Environmental Studies at the University 

of Nevada, Las Vegas, 2006, UCCSN Technical Data. Last 

accessed January 31, 2006, at URL: <http://hrc.nevada.

edu/data/tda>.

Johnston, R.H., 1968, U.S. Geological Survey tracer study, 

Amargosa Desert, Nye County, Nevada, Part 1, Exploratory 

drilling, tracer well construction and testing, and preliminary findings: U.S. Geological Survey Report USGS-­474-

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VA 22161.]

Kilroy, K.C., 1991, Ground-water conditions in Amargosa 

Desert, Nevada–California, 1952–87: U.S. Geological Survey Water-Resources Investigations Report 89-4101, 93 p.

La Camera, R.J., and Locke, G.L., 1998, Selected groundwater data for Yucca Mountain region, southern Nevada and 

eastern California, through December 1996: U.S. Geological Survey Open-File Report 97­-821, 75 p.

La Camera, R.J., Locke, G.L., and Habte, A.M., 2005, 

Selected ground-water data for Yucca Mountain region, 

southern Nevada and eastern California, January–December 

2003: U.S. Geological Survey Open-File Report 2005-

1286, 75 p. Available at URL: <http://pubs.water.usgs.

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La Camera, R.J., Locke, G.L., and Munson, R.H., 1999, 

Selected ground-water data for Yucca Mountain region, 

southern Nevada and eastern California, through December 

1997: U.S. Geological Survey Open-File Report 98­-628, 

84 p.

La Camera, R.J., and Westenburg, C.L., 1994, Selected 

ground-water data for Yucca Mountain region, southern 

Nevada and eastern California, through December 1992: 

U.S. Geological Survey Open-File Report 94-54, 161 p.

La Camera, R.J., Westenburg, C.L., and Locke, G.L., 1996, 

Selected ground-water data for Yucca Mountain region, 

southern Nevada and eastern California, through December 

1995: U.S. Geological Survey Open-File Report 96-­553, 

75 p.

Laczniak, R.J., Cole, J.C., Sawyer, D.A., and Trudeau, D.A., 

1996, Summary of hydrogeologic controls on ground-water 

flow at the Nevada Test Site, Nye County, Nevada: U.S. 

Geological Survey Water-Resources Investigations Report 

96­-4109, 59 p.

Lobmeyer, D.H., Luckey, R.R., O’Brien, G.M., and Burkhardt, 

D.J., 1995, Water levels in continuously monitored wells in 

the Yucca Mountain area, Nevada, 1989: U.S. Geological 

Survey Open-File Report 93-98, 173 p.

Locke, G.L., 2001a, Selected ground-water data for Yucca 

Mountain region, southern Nevada and eastern California, 

through December 1998: U.S. Geological Survey Open-File 

Report 99­-250, 88 p.

Locke, G.L., 2001b, Selected ground-water data for Yucca 

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through December 1999: U.S. Geological Survey Open-File 

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and eastern California, January 2000–December 2002: U.S. 

Geological Survey Open-File Report 03-­387, 133 p.

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Water levels in continuously monitored wells in the Yucca 

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R.J., 2003, Estimated ground-water withdrawals from the 

Death Valley regional flow system, Nevada and California, 

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wells in the Yucca Mountain area, Nevada, 1989: U.S. Geological Survey Open-File Report 91-­178, 51 p.

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284 p.

Robison, J.H., 1984, Ground-water level data and preliminary 

potentiometric-surface maps, Yucca Mountain and vicinity, Nye County, Nevada: U.S. Geological Survey WaterResources Investigations Report 84-4197, 8 p.

Robison, J.H., Stephens, D.M., Luckey, R.R., and Baldwin, 

D.A., 1988, Water levels in periodically measured wells in 

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38 p.

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Nevada, 1999: U.S. Geological Survey Open-File Report 

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72 p.

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ground-water data for Yucca Mountain region, southern 

Nevada and eastern California, through December 1994: 

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16 Selected Ground-Water Data for Yucca Mountain Region, January–December, 2004
Basic Data

Basic Data 17
18 Selected Ground-Water Data for Yucca Mountain Region, January–December, 2004
2,450

2,455

2,460

2,465

2,470

2,475

2,480 1,175.5

1,180.5

1,185.5

1,190.5

1,195.5

1,200.5

1,205.5

Measurement yearly or more frequently

Measurement not available

Single isolated measurement

A

Site JF-2a

(UE-25p 1 PTH)

2,350

2,355

2,360

2,365

2,370

2,375

2,380 773.3

778.3

783.3

788.3

793.3

798.3

803.3

B

Site MV-1

(Army 1 WW)

2,350

2,355

2,360

2,365

2,370

2,375

2,380 22.3

27.3

32.3

37.3

42.3

47.3

52.3

C

Site AD-6

(Tracer Well 3)

2,326

2,331

2,336

2,341

2,346

2,351

2,356

1953 1958 1963 1968 1973 1978 1983 1988 1993 1998 2003 2008

CALENDAR YEAR

-12.8

-7.8

-2.8

2.2

7.2

12.2

17.2

D

Site AM-2

(Five Springs Well)

W

A

T

E

R

L

E

V

E

L, IN

F

E

E

T

B

E

L

O

W

L

A

N

D

S

U

R

F

A

C

E

W

A

T

E

R-L

E

V

E

L

A

L

TIT

U

D

E, IN

F

E

E

T

A

B

O

V

E

S

E

A

L

E

V

E

L

Figure 2. Periodic water levels for selected sites through 2004 at which primary contributing unit is carbonate rock. Data that may 

represent short-term conditions at a site have been excluded.

Basic Data 19
W

A

T

E

R-L

E

V

E

L

A

L

TIT

U

D

E, IN

F

E

E

T

A

B

O

V

E

S

E

A

L

E

V

E

L

2,340

2,345

2,350

2,355

2,360

2,365

2,370 -10.0

-5.0

0.0

5.0

10.0

15.0

20.0

E

Site AM-4

(Devils Hole)

2,300

2,305

2,310

2,315

2,320

2,325

2,330 3.5

8.5

13.5

18.5

23.5

28.5

33.5

F

Site AM-7

(Point of Rocks South Well)

2,120

2,125

2,130

2,135

2,140

2,145

2,150

1953 1958 1963 1968 1973 1978 1983 1988 1993 1998 2003 2008

CALENDAR YEAR

578.4

583.4

588.4

593.4

598.4

603.4

608.4

G

Site DV-3

(Travertine Point 1 Well)

W

A

T

E

R

L

E

V

E

L, IN

F

E

E

T

B

E

L

O

W

L

A

N

D

S

U

R

F

A

C

E

Figure 2. Periodic water levels for selected sites through 2004 at which primary contributing unit is carbonate rock—Continued.

20 Selected Ground-Water Data for Yucca Mountain Region, January–December, 2004
W

A

T

E

R-L

E

V

E

L

A

L

TIT

U

D

E, IN

F

E

E

T

A

B

O

V

E

S

E

A

L

E

V

E

L

W

A

T

E

R

L

E

V

E

L, IN

F

E

E

T

B

E

L

O

W

L

A

N

D

S

U

R

F

A

C

E

3,285

3,290

3,295

3,300

3,305

3,310

3,315 615.9

620.9

625.9

630.9

635.9

640.9

645.9

A

Site CF-1

(Crater Flat 1)

Measurement yearly or more frequently

Measurement not available

Single isolated measurement

2,540

2,545

2,550

2,555

2,560

2,565

2,570 591.1

596.1

601.1

606.1

611.1

616.1

621.1

B

Site CF-2

(USW VH-1)

2,380

2,385

2,390

2,395

2,400

2,405

2,410 1,143.8

1,148.8

1,153.8

1,158.8

1,163.8

1,168.8

1,173.8

C

Site JF-1

(UE-25 WT 15)

2,380

2,385

2,390

2,395

2,400

2,405

2,410

1953 1958 1963 1968 1973 1978 1983 1988 1993 1998 2003 2008

CALENDAR YEAR

977.5

982.5

987.5

992.5

997.5

1002.5

1007.5

D

Site JF-2

(UE-25 WT 13)

Figure 3. Periodic water levels for selected sites through 2004 at which primary contributing unit is volcanic rock. Data that may 

represent short-term conditions at a site have been excluded.

Basic Data 21
W

A

T

E

R-L

E

V

E

L

A

L

TIT

U

D

E, IN

F

E

E

T

A

B

O

V

E

S

E

A

L

E

V

E

L

W

A

T

E

R

L

E

V

E

L, IN

F

E

E

T

B

E

L

O

W

L

A

N

D

S

U

R

F

A

C

E

2,380

2,385

2,390

2,395

2,400

2,405

2,410 907.9

912.9

917.9

922.9

927.9

932.9

937.9

2,390

2,395

2,400

2,405

2,410

2,415

2,420 1,022.8

1,027.8

1,032.8

1,037.8

1,042.8

1,047.8

1,052.8

F

Site J-11

(J-11 WW)

2,370

2,375

2,380

2,385

2,390

2,395

2,400 728.4

733.4

738.4

743.4

748.4

753.4

758.4

G

Site J-12

(J-12 WW)

2,370

2,375

2,380

2,385

2,390

2,395

2,400

1953 1958 1963 1968 1973 1978 1983 1988 1993 1998 2003 2008

CALENDAR YEAR

698.3

703.3

708.3

713.3

718.3

723.3

728.3

H

Site JF-3

(JF-3 Well)

E

Site J-13

(J-13 WW)

Figure 3. Periodic water levels for selected sites through 2004 at which primary contributing unit is volcanic rock—Continued.22 Selected Ground-Water Data for Yucca Mountain Region, January–December, 2004
W

A

T

E

R-L

E

V

E

L

A

L

TIT

U

D

E, IN

F

E

E

T

A

B

O

V

E

S

E

A

L

E

V

E

L

W

A

T

E

R

L

E

V

E

L, IN

F

E

E

T

B

E

L

O

W

L

A

N

D

S

U

R

F

A

C

E

2,380

2,385

2,390

2,395

2,400

2,405

2,410 315.6

320.6

325.6

330.6

335.6

340.6

345.6

Measurement yearly or more frequently

Measurement not available

Single isolated measurement

A

Site CF-3

(Crater Flat 3)

2,350

2,355

2,360

2,365

2,370

2,375

2,380 247.9

252.9

257.9

262.9

267.9

272.9

277.9

B

Site AD-1

(NA-6 Well BGMW-10)

2,300

2,305

2,310

2,315

2,320

2,325

2,330 308.8

313.8

318.8

323.8

328.8

333.8

338.8

C

Site AD-2

(Airport Well)

2,300

2,305

2,310

2,315

2,320

2,325

2,330

1953 1958 1963 1968 1973 1978 1983 1988 1993 1998 2003 2008

CALENDAR YEAR

326.8

331.8

336.8

341.8

346.8

351.8

356.8

D

Site AD-2a

(NDOT Well)

(last measurement on April 26, 2004)

Figure 4. Periodic water levels for selected sites through 2004 at which primary contributing unit is basin fill. Data that may 

represent short-term conditions at a site have been excluded.

Basic Data 23
W

A

T

E

R-L

E

V

E

L

A

L

TIT

U

D

E, IN

F

E

E

T

A

B

O

V

E

S

E

A

L

E

V

E

L

W

A

T

E

R

L

E

V

E

L, IN

F

E

E

T

B

E

L

O

W

L

A

N

D

S

U

R

F

A

C

E

2,300

2,305

2,310

2,315

2,320

2,325

2,330 326.8

331.8

336.8

341.8

346.8

351.8

356.8

E

Site AD-2b

(NDOT Well 2)

(first measurement on May 17, 2004)

2,250

2,255

2,260

2,265

2,270

2,275

2,280 115.3

120.3

125.3

130.3

135.3

140.3

145.3

F

Site AD-3a

(Amargosa Desert 3a)

2,350

2,355

2,360

2,365

2,370

2,375

2,380 97.8

102.8

107.8

112.8

117.8

122.8

127.8

G

Site AD-4a

(Amargosa Desert 4a)

2,235

2,240

2,245

2,250

2,255

2,260

2,265

2,270

2,275

2,280

1953 1958 1963 1968 1973 1978 1983 1988 1993 1998 2003 2008

CALENDAR YEAR

96.4

101.4

106.4

111.4

116.4

121.4

126.4

131.4

136.4

141.4

H

Site AD-5

(USBLM Well)

Figure 4. Periodic water levels for selected sites through 2004 at which primary contributing unit is basin fill—Continued. 

24 Selected Ground-Water Data for Yucca Mountain Region, January–December, 2004
W

A

T

E

R-L

E

V

E

L

A

L

TIT

U

D

E, IN

F

E

E

T

A

B

O

V

E

S

E

A

L

E

V

E

L

W

A

T

E

R

L

E

V

E

L, IN

F

E

E

T

B

E

L

O

W

L

A

N

D

S

U

R

F

A

C

E

2,215

2,220

2,225

2,230

2,235

2,240

2,245 60.0

65.0

70.0

75.0

80.0

85.0

90.0

I

Site AD-7a

(Amargosa Desert 7a)

2,350

2,355

2,360

2,365

2,370 24.3

29.3

34.3

39.3

44.3

J

Site AD-8

(Amargosa Desert 8)

2,170

2,175

2,180

2,185

2,190

2,195

2,200

2,205

2,210

2,215

2,220 40.1

45.1

50.1

55.1

60.1

65.1

70.1

75.1

80.1

85.1

90.1

K

Site AD-9a

(Amargosa Desert 9a)

2,160

2,165

2,170

2,175

2,180

2,185

2,190

1953 1958 1963 1968 1973 1978 1983 1988 1993 1998 2003 2008

0.9

5.9

10.9

15.9

20.9

25.9

30.9

L

Site AD-10

(NA-9 Well)

CALENDAR YEAR

Figure 4. Periodic water levels for selected sites through 2004 at which primary contributing unit is basin fill—Continued. 

Basic Data 25
W

A

T

E

R-L

E

V

E

L

A

L

TIT

U

D

E, IN

F

E

E

T

A

B

O

V

E

S

E

A

L

E

V

E

L

W

A

T

E

R

L

E

V

E

L, IN

F

E

E

T

B

E

L

O

W

L

A

N

D

S

U

R

F

A

C

E

2,120

2,125

2,130

2,135

2,140

2,145

2,150 201.1

206.1

211.1

216.1

221.1

226.1

231.1

M

Site AD-11

(GS-3 Well)

2,330

2,335

2,340

2,345

2,350

2,355

2,360 70.3

75.3

80.3

85.3

90.3

95.3

100.3

N

Site AD-12

(GS-1 Well)

2,300

2,305

2,310

2,315

2,320

2,325

2,330

2,335

2,340 363.2

368.2

373.2

378.2

383.2

388.2

393.2

398.2

403.2

O

Site AD-13

(S-1 Well)

2,015

2,020

2,025

2,030

2,035

2,040

2,045

1953 1958 1963 1968 1973 1978 1983 1988 1993 1998 2003 2008

CALENDAR YEAR

-3.2

1.8

6.8

11.8

16.8

21.8

26.8

P

Site AD-14

(Death Valley Junction Well)

Figure 4. Periodic water levels for selected sites through 2004 at which primary contributing unit is basin fill—Continued. 

26 Selected Ground-Water Data for Yucca Mountain Region, January–December, 2004
W

A

T

E

R-L

E

V

E

L

A

L

TIT

U

D

E, IN

F

E

E

T

A

B

O

V

E

S

E

A

L

E

V

E

L

W

A

T

E

R

L

E

V

E

L, IN

F

E

E

T

B

E

L

O

W

L

A

N

D

S

U

R

F

A

C

E

2,245

2,250

2,255

2,260

2,265

2,270

2,275 -9.1

-4.1

0.9

5.9

10.9

15.9

20.9

Q

Site AM-1

(Rogers Spring Well)

2,125

2,130

2,135

2,140

2,145

2,150

2,155 2.0

7.0

12.0

17.0

22.0

27.0

32.0

R

Site AM-3

(Ash Meadows 3)

2,340

2,345

2,350

2,355

2,360

2,365

2,370 34.1

39.1

44.1

49.1

54.1

59.1

64.1

S

Site AM-5

(Devils Hole Well)

2,280

2,285

2,290

2,295

2,300

2,305

2,310

1953 1958 1963 1968 1973 1978 1983 1988 1993 1998 2003 2008

CALENDAR YEAR

8.8

13.8

18.8

23.8

28.8

33.8

38.8

T

Site AM-6

(Point of Rocks North Well)

Figure 4. Periodic water levels for selected sites through 2004 at which primary contributing unit is basin fill—Continued. 

Basic Data 27
W

A

T

E

R-L

E

V

E

L

A

L

TIT

U

D

E, IN

F

E

E

T

A

B

O

V

E

S

E

A

L

E

V

E

L

W

A

T

E

R

L

E

V

E

L, IN

F

E

E

T

B

E

L

O

W

L

A

N

D

S

U

R

F

A

C

E

3,895

3,900

3,905

3,910

3,915

3,920

3,925

3,930

3,935 145.9

150.9

155.9

160.9

165.9

170.9

175.9

Site CF-1a

(Crater Flat 1a)

Measurement yearly or more frequently

Measurement not available

Single isolated measurement

2,370

2,375

2,380

2,385

2,390

2,395

2,400

1953 1958 1963 1968 1973 1978 1983 1988 1993 1998 2003 2008

CALENDAR YEAR

656.0

661.0

666.0

671.0

676.0

681.0

686.0

Site RV-1

(TW-5)

Figure 5. Periodic water levels for selected sites through 2004 at which primary contributing unit is undifferentiated sedimentary rock. 

Data that may represent short-term conditions at a site have been excluded.

28 Selected Ground-Water Data for Yucca Mountain Region, January–December, 2004
W

A

T

E

R

L

E

V

E

L, IN

F

E

E

T

B

E

L

O

W

L

A

N

D

S

U

R

F

A

C

E

2,387.0

2,387.5

2,388.0

2,388.5

2,389.0

2,389.5

1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005

708.8

709.3

709.8

710.3

710.8

711.3

A

Site JF-3

(JF-3 Well)

2,359.5

2,360.0

2,360.5

2,361.0

2,361.5

1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005

CALENDAR YEAR

40.8

41.3

41.8

42.3

42.8

B

Site AD-6

(Tracer Well 3)

W

A

T

E

R-L

E

V

E

L

A

L

TIT

U

D

E, IN

F

E

E

T

A

B

O

V

E

S

E

A

L

E

V

E

L

Figure 6. Daily mean water levels in (A) borehole JF-3, May 1992–December 2004 and in (B) borehole AD-6, 

July 1992–December 2004.

Basic Data 29
500

2,5002,0001,5001,000

ASite AM-1a(Fairbanks Spring)

 Measurements yearly or more frequently

 ------ Measurement not available

• Single isolated measurement

4,0003,5003,0002,5002,000

BSite AM-5a(Crystal Pool)

0

500

2,0001,5001,000

1910 1915 1920 1925 1930 1935 1940 1945 1950 1955 1960 1965 1970 1975 1980 1985 1990 1995 2000 2005

CALENDAR YEAR

CSite AM-8(Big Spring)

ETUNI M REP SNOLLAG NI , EGRAHCSI D

Figure 7. Discharge at sites (

A) AM-1a (Fairbanks Spring), (

B) AM-5a (Crystal Pool), and (

C) AM-8 (Big Spring), 1910–2004.

30 Selected Ground-Water Data for Yucca Mountain Region, January–December, 2004
E

TUNIMREPSNOLLAGNI,EGRAHCSID

50

656055504540353025201510

1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005

CALENDAR YEAR

 Site AM-2 (Five Springs Site DV-2 (Navel Spring)

Well)

Annular space at land surface at site AM-2cleared May-July 1996.

Figure 8. Discharge at sites AM-2 (Five Springs Well) and DV- 2 (Navel Spring), 1990–2004. Symbols shown on lines indicate periodic measurements presented in this and previous reports on selected ground-water data for Yucca Mountain region.

Basic Data  31
300

290280270260250240230220210200190180170160150140130120110100

1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005

CALENDAR YEAR

DISCHARGE, IN GALLONS PER MINUTE

 Periodic measurement National Park Service monthly mean

Figure 9. Discharge at site DV-1 (Texas Spring), 1989–2004. National Park Service mean monthly data are not connected by a line where data are not available for consecutive months.

32 Selected Ground-Water Data for Yucca Mountain Region, January–December, 2004
Sizes of locations indicated do not reflect quantity of ground water withdrawn.

? ?

?

?

?

?

?

?

?

?

? ?

?

?

?

?

?

?

?

? ?

?

?

?

? ?

?

?

?

?

?

?

?

?

? ?

?

?

?

?

?

?

?

? ?

?

?

?

CALIFORNIA

NEVADA

190

374

95

160

373

ASH

MEADOWS SUBBAS NI

OASIS VALLEY SUBBASIN

ASH

MEADOWS SUBBAS NI

I

OASIS VALLEY SUBBASIN

372

95

- C

ALKALIF LAT

FURNACE CREEK RAN

H SUBBASIN

C

ALKALI FLAT-FURNACE CREEK RAN

H SUBBASIN

0 5 10 MILES

0 5 10 KILOMETERS

5

5

Funeral Mountains

AMARGOSA DESERT

SARCOBATUS FLAT

OASIS

VALLEY

DEATH VALLEY

Grapevine Mountains

Furnace

Creek

Pahute Mesa

BUCKBOARD MESA

JACKASS

FLATS

Specter Range

ROCK VALLEY

Yucca Mountain

CRATER

FLAT

Bullfrog

Hills

Beatty

Shoshone

Mountain

YUCCA

FLAT

Bare Mountain

Amargosa

Valley

Mercury MERCURY

VALLEY

Ash

Meadows Panamint Range

Black Range

Greenwater

Range

Death

Valley

Junction

Pahrump

PAHRUMP VALLEY

Spring Mountains

THREE

LAKES

VALLEY

Indian

Springs

Spotted Range

FRENCHMAN

FLAT

GROOM LAKE

VALLEY

PAPOOSE

LAKE

VALLEY Halfpint Range

INDIAN SPRINGS VALLEY

J-13

MV-1

J-12

CF-3

USW VH-2

NEVADA

CALIFORNIA

MAP

AREA

Ground-water withdrawal site and identifier

Hydrographic-area boundary

Ground-water subbasin boundary—

 From Laczniak and others (1996, pl. 1). 

 Queried where location uncertain

Study-area boundary

General area of ground-water withdrawals

EXPLANATION

USW VH-2

Base from U.S. Geological Survey digital elevation data, 1:250,000, 1987, and digital data,

1:100,000, 1981-89; Universal Transverse Mercator projection, Zone 11. Shaded-relief base

from 1:250,000-scale Digital Elevation Model; sun illumination from northwest at 30

degrees above horizon.

37°00'

117°00' 116°30' 116°00'

36°30'

Figure 10. Location of ground-water withdrawal sites and general areas of ground-water withdrawals in the Yucca Mountain 

region of southern Nevada and eastern California, January-December, 2004. Sizes of locations indicated do not reflect quantity of 

ground-water withdrawn.

Basic Data  33
0

800400

5,2004,8004,4004,0003,6003,2002,8002,4002,0001,6001,200

1959 1962 1965 1968 1971 1974 1977 1980 1983 1986 1989 1992 1995 1998 2001 2004

CALENDAR YEAR

WITHDRAWALS, IN MILLIONS OF GALLONS

Amargosa DesertJackass FlatsCrater Flat

Figure 11. Available estimates of annual ground-water withdrawals for selected areas within Alkali Flat–Furnace Creek Ranch ground-water subbasin, 1959–2004.

34 Selected Ground-Water Data for Yucca Mountain Region, January–December, 2004
0

200

400

600

800

1,000

1,200

1,400

1,600

1,800

2,000

2,200

2,400

1962 1965 1968 1971 1974 1977 1980 1983 1986 1989 1992 1995 1998 2001 2004

CALENDAR YEAR

WITHDRAWALS, IN MILLIONS OF GALLONS

Amargosa Desert (Ash Meadows area)

Mercury Valley

Amargosa Desert (excluding Ash Meadows area)

Figure 12. Available estimates of annual ground-water withdrawals for selected areas within Ash Meadows ground-water subbasin, 

1962–2004.

Basic Data  35
2,391

2,392

2,393

2,394

2,395

Measurement yearly or more frequently

Measurement not available

Single isolated measurement

Site JF-1

(UE-25 WT 15)

2,389

2,390

2,391

2,392

2,393

2,394

Site JF-2

(UE-25 WT 13)

2,466

2,467

2,468

2,469

2,470

2,471

2,472

2,473

2,474

Site JF-2a

(UE-25p 1 PTH)

0

20

40

60

80

100

120

140

1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 19992000 20012002 2003 2004

CALENDAR YEAR

WIT

H

D

R

AWALS,

IN

MILLIO

N

S

OF G

ALLO

N

S

WATER-LEVEL ALTIT

U

DE, IN FEET

A

B

O

VE SEA LEVEL

Figure 13. Water-level altitudes in boreholes JF-1, JF-2, JF-2a, J-13, J-11, J-12, and JF-3 and estimated annual groundwater withdrawals from Jackass Flats, 1983–2004. Periodic measurements that may reflect short-term conditions at a 

site have been excluded.

36 Selected Ground-Water Data for Yucca Mountain Region, January–December, 2004
WIT

H

D

R

AWALS,

IN

MILLIO

N

S

OF G

ALLO

N

S

WATER-LEVEL ALTIT

U

DE, IN FEET

A

B

O

VE SEA LEVEL

2,388

2,389

2,390

2,391

2,392

Site J-13

(J-13 WW)

2,401

2,402

2,403

2,404

Site J-11

(J-11 WW)

2,386

2,387

2,388

2,389

2,390

Site J-12

(J-12 WW)

2,387

2,388

2,389

2,390

Site JF-3

(JF-3 Well)

0

20

40

60

80

100

120

140

1983 1984 1985 1986 1987 1988 1989 1990 19911992 1993 1994 1995 1996 1997 1998 19992000 20012002 2003 2004

CALENDAR YEAR

Figure 13. Water-level altitudes in boreholes JF-1, JF-2, JF-2a, J-13, J-11, J-12, and JF-3 and estimated annual groundwater withdrawals from Jackass Flats, 1983–2004—Continued.

Basic Data  37
2,391.6

2,391.8

2,392.0

2,392.2

2,392.4

2,392.6

2,392.8

2,393.0

2,393.2

2,393.4

Site JF-2

(UE-25 WT 13)

1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004

0

20

40

60

80

100

120

140

Baseline

(1992-1993)

WIT

H

D

R

A

W

A

L

S, IN

MIL

LIO

N

S

O

F

G

A

L

L

O

N

S

CALENDAR YEAR

2,391.6

2,391.8

2,392.0

2,392.2

2,392.4

2,392.6

2,392.8

2,393.0

2,393.2

2,393.4

2,393.6

2,393.8

2,394.0

Average deviation for

individual year

Average deviation for

baseline period

Median

water level

Site JF-1

(UE-25 WT 15)

WATER-LEVEL ALTITUDE, IN FEET ABOVE SEA LEVEL

Figure 14. Median water-level altitudes and average deviation of water levels for boreholes JF-1, JF-2, JF-2a, J-13, J-11, J-12, and 

JF-3 and estimated annual ground-water withdrawals from Jackass Flats, for 1992–93 baseline period and for 1994–2004.

38 Selected Ground-Water Data for Yucca Mountain Region, January–December, 2004
2,468.0

2,468.2

2,468.4

2,468.6

2,468.8

2,469.0

2,469.2

2,469.4

2,469.6

2,469.8

2,470.0

2,470.2

2,470.4

2,470.6

2,470.8

2,471.0

2,471.2

2,471.4

2,471.6

2,471.8

2,472.0

2,472.2

2,472.4

2,472.6

2,472.8

2,473.0

Site JF-2a

(UE-25p 1 PTH)

1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004

0

20

40

60

80

100

120

140

Baseline

(1992-1993)

WIT

H

D

R

A

W

ALS, IN

MILLIO

N

S

OF G

ALLO

N

S

CALENDAR YEAR

2,388.8

2,389.0

2,389.2

2,389.4

2,389.6

2,389.8

2,390.0

2,390.2

2,390.4

2,390.6

2,390.8

2,391.0

Site J-13

(J-13 WW)

2,401.8

2,402.0

2,402.2

2,402.4

2,402.6

2,402.8

2,403.0

Site J-11

(J-11 WW)

WATER-LEVEL ALTITUDE, IN FEET ABOVE SEA LEVEL

Figure 14. Median water-level altitudes and average deviation of water levels for boreholes JF-1, JF-2, JF-2a, J-13, 

J-11, J-12, and JF-3 and estimated annual ground-water withdrawals from Jackass Flats, for 1992–93 baseline period and 

for 1994–2004—Continued.

Basic Data  39
2,387.6

2,387.8

2,388.0

2,388.2

2,388.4

2,388.6

2,388.8

2,389.0

2,389.2

Site JF-3

(JF-3 Well)

2,387.6

2,387.8

2,388.0

2,388.2

2,388.4

2,388.6

2,388.8

2,389.0

2,389.2

Site J-12

(J-12 WW)

1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004

0

20

40

60

80

100

120

140

Baseline

(1992-1993)

WIT

H

D

R

A

W

A

L

S, IN

MIL

LIO

N

S

O

F

G

A

L

L

O

N

S

CALENDAR YEAR

WATER-LEVEL ALTITUDE, IN FEET ABOVE SEA LEVEL

Figure 14. Median water-level altitudes and average deviation of water levels for boreholes JF-1, JF-2, JF-2a, J-13, J-11, J-12, and 

JF-3 and estimated annual ground-water withdrawals from Jackass Flats, for 1992–93 baseline period and for 1994–2004—Continued.

40 Selected Ground-Water Data for Yucca Mountain Region, January–December, 2004
Table 3. Periodic water-level data at monitoring sites in Yucca Mountain region, 2004—Continued.

Site

number

(fig. 1)

U.S. Geological

Survey site

identification

Site name

Landsurface

 altitude

(feet above

sea level)

Height of

measurement

point (feet 

above land 

surface)

Water-level measurement

Date Time

Depth to 

water (feet

below land

surface)

Altitude of

water surface

(feet above

sea level)

Method Site status Data Source

CF-1 365520116370301 Crater Flat 1 3,930.9 1.77 01/21/2004

02/19/200403/04/200404/21/200405/12/200406/29/200407/28/200408/20/200409/24/200410/14/200411/05/200412/07/2004

164509311458115812401658123211301125105812161110

623.77623.62623.27623.28623.21622.96623.04622.95622.91622.83622.71622.55

3,307.13,307.33,307.63,307.63,307.73,307.93,307.93,308.03,308.03,308.13,308.23,308.4

VVVVVVVVVVVV

------------

EMPEMPEMPEMPEMPEMPEMPEMPEMPEMPEMPEMP

Table 3. Periodic water-level data at monitoring sites in Yucca Mountain region, 2004.Site Number: Alphanumeric identifier used to designate sites on map and tables. First part represents hydrographic area in which site is located. Hydrographic areas: CF, Crater Flat; JF or J, Jackass Flats; RV, Rock Valley; MV, Mercury Valley; AD or AM, Amargosa Desert; DV, Death Valley. Second part is sequential numbering representing relative location of site within hydrographic area or Ash Meadows springdischarge area; numbering order generally is north to south, then west to east. Sites J-13, J-11, and J-12 previously were numbered by Ratheon Services Nevada and herein were not renumbered.U.S. Geological Survey site identification: Unique identification number for site as stored in files and data bases of U.S. Geological Survey (USGS).Land-surface altitude: Referenced to the National Geodetic Vertical Datum of 1929. Representative altitude of land surface in vicinity of site. Exception is altitude for site AM-4, which is altitude of bolt that serves as measurement point. Altitudes are reported to nearest 0.1 foot and were derived from land surveys.Height of measurement point: Height of measurement point (MP) used. MP is stable, recoverable point from which periodic measurements of depth to water are made. MP at site AM-4 is bolt fastened to south wall of fissure, and is not referenced to land surface. Negative number indicates MP is below land surface. –, unknown.Depth to water: Depths listed generally represent water level below land surface. An exception is site AM-4, where data represent water levels below measurement point. Apparent differences in depth to water at sites that list data from several sources may result from differing estimates of distance from land surface to measurement point used.Altitude of water surface: Referenced to the National Geodetic Vertical Datum of 1929. Land-surface altitude minus depth to water, reported to nearest 0.1 foot.Method: Method used to measure depth to water. F, pressure transducer; R, reported (measurement method unknown); S, steel tape; T, electric tape; V, calibrated electric tape.Site status: Known conditions at site that may have affected measured depth to water. -, unknown; F, flowing; P, pumping; W, well destroyed; Z, measurement made in pump-discharge column.Data source: BN, Bechtel Nevada; EMP, Environmental-Monitoring Program (USGS); HRC, Harry Reid Center for Environmental Studies (University of Nevada, Las Vegas); NDWR, Nevada Division of Water Resources; NPS, National Park Service; NWRPO, Nye County Nuclear Waste Repository Project Office; NTS, U.S. Department of Energy, National Nuclear Security Administration, Nevada Site Office; USFWS, U.S. Fish and Wildlife Service

Basic Data 41
Table 3. Periodic water-level data at monitoring sites in Yucca Mountain region, 2004—Continued.

Site

number

(fig. 1)

U.S. Geological

Survey site

identification

Site name

Landsurface

 altitude

(feet above

sea level)

Height of

measurement

point (feet 

above land 

surface)

Water-level measurement

Date Time

Depth to 

water (feet

below land

surface)

Altitude of

water surface

(feet above

sea level)

Method Site status Data Source

CF-1a 365445116383901 Crater Flat 1a 4,080.9 1.68 01/21/2004

02/19/200403/04/200404/21/200405/12/200406/29/200407/28/200408/20/200409/24/200410/14/200411/05/200412/07/2004

161709111425112112181635115610561105102911261036

180.37180.54180.48180.99181.11181.42181.75181.84182.26182.36182.48182.54

3,900.53,900.43,900.43,899.93,899.83,899.53,899.23,899.13,898.63,898.53,898.43,898.4

SSSSSSSSSSSS

------------

EMPEMPEMPEMPEMPEMPEMPEMPEMPEMPEMPEMP

CF-2 364732116330701 USW VH-1 3,161.1 1.17 01/28/2004

02/04/200402/04/200403/04/200404/21/200405/12/200405/20/200406/29/200407/28/200408/10/200408/20/200409/24/200410/21/200411/05/200411/30/200412/06/2004

1047

–

1614125413071115

–

15241010

–

1245132013541405

–

1422

603.47603.47603.51603.40603.31603.56603.41603.34603.45603.37603.43603.36603.37603.40603.53603.48

2,557.62,557.62,557.62,557.72,557.82,557.52,557.72,557.82,557.62,557.72,557.72,557.72,557.72,557.72,557.62,557.6

VV

S

VVVVVVVVVVVVV

----------------

EMP

HRC

EMPEMPEMPEMP

HRC

EMPEMP

HRC

EMPEMPEMPEMP

HRC

EMP

42 Selected Ground-Water Data for Yucca Mountain Region, January–December, 2004
Table 3. Periodic water-level data at monitoring sites in Yucca Mountain region, 2004—Continued.

Site

number

(fig. 1)

U.S. Geological

Survey site

identification

Site name

Landsurface

 altitude

(feet above

sea level)

Height of

measurement

point (feet 

above land 

surface)

Water-level measurement

Date Time

Depth to 

water (feet

below land

surface)

Altitude of

water surface

(feet above

sea level)

Method Site status Data Source

CF-3 364105116302601 Crater Flat 3 2,725.6 -3.20 01/21/2004

02/23/200403/18/200404/26/200405/18/200405/18/200406/10/200407/28/200408/20/200409/24/200410/14/200411/17/200412/07/2004

1353120109371320103110491027160114251440133713041255

331.18331.06331.13331.13331.78331.27331.23331.15331.03331.15331.07331.08331.03

2,394.42,394.52,394.52,394.52,393.82,394.32,394.42,394.42,394.62,394.42,394.52,394.52,394.6

VVVVVVVVVVVVV

----

P

--------

EMPEMPEMPEMPEMPEMPEMPEMPEMPEMPEMPEMPEMP

JF-1 365116116233801 UE-25 WT 15 3,553.8 0.18 01/15/2004

02/19/200402/24/200403/08/200404/20/200404/20/200405/17/200406/29/200407/19/200408/12/200408/24/200409/27/200410/25/200411/16/200412/13/200412/14/2004

1217

–

08551226

–

12031027114012341239

–

1128103015301534

–

1,160.181,160.451,160.311,160.731,160.681,160.511,160.261,160.371,160.391,160.361,160.461,160.431,160.291,160.511,160.531,160.84

2,393.62,393.42,393.52,393.12,393.12,393.32,393.52,393.42,393.42,393.42,393.32,393.42,393.52,393.32,393.32,393.0

VVVVVVVVVVVVVVVV

----------------

EMP

HRC

EMPEMP

HRC

EMPEMPEMPEMPEMP

HRC

EMPEMPEMPEMP

HRC

Basic Data 43
Table 3. Periodic water-level data at monitoring sites in Yucca Mountain region, 2004—Continued.

Site

number

(fig. 1)

U.S. Geological

Survey site

identification

Site name

Landsurface

 altitude

(feet above

sea level)

Height of

measurement

point (feet 

above land 

surface)

Water-level measurement

Date Time

Depth to 

water (feet

below land

surface)

Altitude of

water surface

(feet above

sea level)

Method Site status Data Source

JF-2 364945116235001 UE-25 WT 13 3,387.5 1.00 01/15/2004

02/15/200403/15/200404/15/200405/15/200406/09/200407/23/200408/23/200409/23/200410/15/200411/15/200412/15/2004

10201020102011201120112011201120

–

103609360936

994.94994.90994.99994.85994.81994.80994.83994.80994.78994.70994.79994.79

2,392.62,392.62,392.52,392.62,392.72,392.72,392.72,392.72,392.72,392.82,392.72,392.7

FFFFFFFF

V

FFF

------------

HRCHRCHRCHRCHRCHRCHRCHRCHRCHRCHRCHRC

JF-2a 364938116252102 UE-25p 1 PTH 3,655.5 0.63 01/15/2004

02/15/200402/19/200404/29/200405/15/200406/09/200407/15/200408/15/200409/15/200410/15/200411/15/200412/15/2004

103510351335

–

11451145114511451145104509450945

1,182.371,182.461,182.371,184.211,184.201,183.981,184.391,184.361,184.161,183.951,184.021,184.17

2,473.12,473.02,473.12,471.32,471.32,471.52,471.12,471.12,471.32,471.62,471.52,471.3

FFF

V

FFFFFFFF

------------

HRCHRCHRCHRCHRCHRCHRCHRCHRCHRCHRCHRC

44 Selected Ground-Water Data for Yucca Mountain Region, January–December, 2004
Table 3. Periodic water-level data at monitoring sites in Yucca Mountain region, 2004—Continued.

Site

number

(fig. 1)

U.S. Geological

Survey site

identification

Site name

Landsurface

 altitude

(feet above

sea level)

Height of

measurement

point (feet 

above land 

surface)

Water-level measurement

Date Time

Depth to 

water (feet

below land

surface)

Altitude of

water surface

(feet above

sea level)

Method Site status Data Source

J -13 364828116234001 J -13 WW 3,317.9 0.98 01/29/2004

01/29/200402/12/200403/05/200403/08/200404/20/200405/17/200406/29/200407/27/200407/28/200408/12/200409/27/200410/25/200411/16/200411/19/200412/13/2004

151115281326

–

1042111211061226161207201344133313451246

–

1152

927.49927.24927.21927.47927.65927.39927.13927.18928.68928.73928.56928.50928.30928.33928.64928.27

2,390.42,390.72,390.72,390.42,390.22,390.52,390.82,390.72,389.22,389.22,389.32,389.42,389.62,389.62,389.32,389.6

VV

S

VVVVVVVVVVVVV

----------------

NTS

EMPEMP

HRC

EMPEMPEMPEMPEMPEMPEMPEMPEMPEMP

HRC

EMP

J -11 364706116170601 J -11 WW 3,442.8 2.11 01/29/2004

02/05/200403/08/200403/18/200404/19/200405/17/200406/14/200406/24/200407/13/200407/19/200408/12/200409/27/200410/25/200411/16/200411/18/200412/13/2004

134308251133

–

124009411111

––

11381147102709461049

–

1020

1,040.231,040.361,040.591,040.311,040.291,040.051,040.211,040.481,040.531,040.211,040.191,040.221,040.071,040.331,040.501,040.36

2,402.62,402.42,402.22,402.52,402.52,402.82,402.62,402.32,402.32,402.62,402.62,402.62,402.72,402.52,402.32,402.4

V

S

VVVVVV

T

VVVVVVV

----------------

EMPEMPEMP

HRC

EMPEMPEMP

HRC

BN

EMPEMPEMPEMPEMP

HRC

EMP

Basic Data 45
Table 3. Periodic water-level data at monitoring sites in Yucca Mountain region, 2004—Continued.

Site

number

(fig. 1)

U.S. Geological

Survey site

identification

Site name

Landsurface

 altitude

(feet above

sea level)

Height of

measurement

point (feet 

above land 

surface)

Water-level measurement

Date Time

Depth to 

water (feet

below land

surface)

Altitude of

water surface

(feet above

sea level)

Method Site status Data Source

J -12 364554116232401 J -12 WW 3,128.4 3.95 01/29/2004

02/04/200403/05/200403/08/200404/20/200405/17/200406/24/200406/29/200407/19/200408/12/200409/02/200409/27/200410/25/200411/16/200411/18/200412/13/2004

13081136

–

100910381130

–

125313371429

–

121311571331

–

1236

739.52739.50739.51739.77739.66739.46739.67739.44739.39739.44739.33739.46739.40739.50739.50739.55

2,388.92,388.92,388.92,388.62,388.72,388.92,388.72,389.02,389.02,389.02,389.12,388.92,389.02,388.92,388.92,388.8

V

S

VVVVVVVVVVVVVV

----------------

EMPEMP

HRC

EMPEMPEMP

HRC

EMPEMPEMP

HRC

EMPEMPEMP

HRC

EMP

JF-3 364528116232201 JF-3 Well 3,098.3 2.27 01/15/2004

02/12/200403/08/200404/19/200405/17/200406/29/200407/19/200408/12/200409/27/200410/25/200411/16/200412/13/200412/14/2004

1030111509301315114513151400153012451115141514461330

709.31709.70709.78709.61709.44709.48709.42709.37709.41709.41709.52709.53709.55

2,389.02,388.62,388.52,388.72,388.92,388.82,388.92,388.92,388.92,388.92,388.82,388.82,388.8

VVVVVVVVVVVVV

-------------

EMPEMPEMPEMPEMPEMPEMPEMPEMPEMPEMPEMPEMP

46 Selected Ground-Water Data for Yucca Mountain Region, January–December, 2004
Table 3. Periodic water-level data at monitoring sites in Yucca Mountain region, 2004—Continued.

Site

number

(fig. 1)

U.S. Geological

Survey site

identification

Site name

Landsurface

 altitude

(feet above

sea level)

Height of

measurement

point (feet 

above land 

surface)

Water-level measurement

Date Time

Depth to 

water (feet

below land

surface)

Altitude of

water surface

(feet above

sea level)

Method Site status Data Source

RV-1 363815116175901 TW- 5 3,056.0 1.6 01/21/2004

02/18/200403/18/200404/08/200405/07/200406/08/200407/28/200408/13/200409/27/200410/22/200411/04/200412/07/2004

120411420836135412381313084813201654115716041401

677.50677.41677.43677.32677.35677.28677.36677.25677.24677.40677.32677.28

2,378.52,378.62,378.62,378.72,378.62,378.72,378.62,378.82,378.82,378.62,378.72,378.7

VVVVVVVVVVVV

------------

EMPEMPEMPEMPEMPEMPEMPEMPEMPEMPEMPEMP

MV-1 363530116021401 Army 1 WW 3,153.3 3.10 01/20/2004

02/23/200403/08/200404/19/200405/17/200406/14/200407/19/200408/16/200409/27/200410/25/200411/08/200412/13/2004

081709290821082608200823081608150830081008250834

786.36786.38786.90787.02787.13787.20787.06787.00787.02786.69786.91787.01

2,366.92,366.92,366.42,366.32,366.22,366.12,366.22,366.32,366.32,366.62,366.42,366.3

VVVVVVVVVVVV

ZZZZZZZZZZZZ

EMPEMPEMPEMPEMPEMPEMPEMPEMPEMPEMPEMP

AD-1 364141116351401 NA-6 Well BGMW-10 2,627.9 1.7 01/21/2004

02/19/200403/04/200404/21/200405/12/200406/10/200407/28/200408/20/200409/24/200410/14/200411/17/200412/06/2004

145411541648140513520909140713351225121711511315

269.98269.89269.74269.72270.00270.13269.89269.91269.89269.93269.98270.02

2,357.92,358.02,358.22,358.22,357.92,357.82,358.02,358.02,358.02,358.02,357.92,357.9

SSSSSSSSSSSS

------------

EMPEMPEMPEMPEMPEMPEMPEMPEMPEMPEMPEMP

Basic Data 47
Table 3. Periodic water-level data at monitoring sites in Yucca Mountain region, 2004—Continued.

Site

number

(fig. 1)

U.S. Geological

Survey site

identification

Site name

Landsurface

 altitude

(feet above

sea level)

Height of

measurement

point (feet 

above land 

surface)

Water-level measurement

Date Time

Depth to 

water (feet

below land

surface)

Altitude of

water surface

(feet above

sea level)

Method Site status Data Source

AD-2 363830116241401 Airport Well 2,638.8 1.15 01/21/2004

02/23/200403/18/200404/26/200405/17/200406/10/200407/27/200408/27/200409/28/200410/22/200411/15/200412/08/2004

125610561008121716231110142011540845133213051146

325.83325.65325.68325.84325.71325.91325.71325.99325.79326.07325.77325.87

2,313.02,313.22,313.12,313.02,313.12,312.92,313.12,312.82,313.02,312.72,313.02,312.9

SSSSSSSSSSSS

------------

EMPEMPEMPEMPEMPEMPEMPEMPEMPEMPEMPEMP

AD-2a 363835116234001 NDOT Well 2,656.8 0.4 01/21/2004

02/23/200403/18/200404/26/200405/17/2004

13141134102812351530

342.13341.84342.06342.63

--

2,314.72,315.02,314.72,314.2

--

SSSS

-

----

W

EMPEMPEMPEMPEMP

AD-2b 363835116234002 NDOT Well 2 2,656.8 0.76 05/17/2004

06/10/200407/27/200408/27/200409/28/200410/22/200411/17/200412/08/2004

16091130144612141233130613581214

342.42343.17342.84343.53342.80343.04342.45342.32

2,314.42,313.62,314.02,313.32,314.02,313.82,314.42,314.5

VVV

SSS

VV

--------

EMPEMPEMPEMPEMPEMPEMPEMP

48 Selected Ground-Water Data for Yucca Mountain Region, January–December, 2004
Table 3. Periodic water-level data at monitoring sites in Yucca Mountain region, 2004—Continued.

Site

number

(fig. 1)

U.S. Geological

Survey site

identification

Site name

Landsurface

 altitude

(feet above

sea level)

Height of

measurement

point (feet 

above land 

surface)

Water-level measurement

Date Time

Depth to 

water (feet

below land

surface)

Altitude of

water surface

(feet above

sea level)

Method Site status Data Source

AD-3a 363521116352501 Amargosa Desert 3a 2,395.3 1.00 01/10/2000

07/24/200010/15/200202/25/200306/10/200307/09/200308/04/200309/16/200310/14/200301/22/200401/23/200402/19/200402/23/200403/23/200404/07/200404/12/200405/18/200406/07/200406/28/200407/06/200408/17/200408/27/200409/28/200409/28/200410/21/200411/15/200412/06/2004

–––––––

11551005080113451309102012401145131109141316112012231040144309431120124815391217

132.67133.15133.70133.70133.90134.01134.14134.18134.27134.18134.00133.99134.08133.99134.09134.03134.25134.15134.25134.23134.37134.29134.41134.35134.36134.33134.38

2,262.62,262.22,261.62,261.62,261.42,261.32,261.22,261.12,261.02,261.12,261.32,261.32,261.22,261.32,261.22,261.32,261.02,261.22,261.02,261.12,260.92,261.02,260.92,261.02,260.92,261.02,260.9

VVVVVVVVV

S

V

S

V

S

V

SSS

V

S

V

SS

V

SSS

---------------------------

NWRPONWRPONWRPONWRPONWRPONWRPONWRPONWRPONWRPO

EMP

NWRPO

EMP

NWRPO

EMP

NWRPO

EMPEMPEMP

NWRPO

EMP

NWRPO

EMPEMP

NWRPO

EMPEMPEMP

Basic Data 49
Table 3. Periodic water-level data at monitoring sites in Yucca Mountain region, 2004—Continued.

Site

number

(fig. 1)

U.S. Geological

Survey site

identification

Site name

Landsurface

 altitude

(feet above

sea level)

Height of

measurement

point (feet 

above land 

surface)

Water-level measurement

Date Time

Depth to 

water (feet

below land

surface)

Altitude of

water surface

(feet above

sea level)

Method Site status Data Source

AD-4a 363428116234701 Amargosa Desert 4a 2,477.8 1.0 01/22/2004

02/18/200403/23/200404/12/200405/18/200406/07/200407/06/200408/27/200409/28/200410/22/200411/15/200412/08/2004

092712271313134108481353125312471145124513411044

119.92119.68119.83119.95119.97119.93119.95120.09120.08120.18120.09120.17

2,357.92,358.12,358.02,357.82,357.82,357.92,357.82,357.72,357.72,357.62,357.72,357.6

SSSSSSSSSSSS

------------

EMPEMPEMPEMPEMPEMPEMPEMPEMPEMPEMPEMP

50 Selected Ground-Water Data for Yucca Mountain Region, January–December, 2004
Table 3. Periodic water-level data at monitoring sites in Yucca Mountain region, 2004—Continued.

Site

number

(fig. 1)

U.S. Geological

Survey site

identification

Site name

Landsurface

 altitude

(feet above

sea level)

Height of

measurement

point (feet 

above land 

surface)

Water-level measurement

Date Time

Depth to 

water (feet

below land

surface)

Altitude of

water surface

(feet above

sea level)

Method Site status Data Source

AD-5 363310116294001 USBLM Well 2,376.4 0.0 02/12/2000

03/22/200110/10/200202/25/200306/10/200307/09/200308/04/200309/16/200310/14/200301/23/200401/23/200402/11/200402/23/200403/23/200404/07/200404/12/200405/10/200406/07/200406/28/200407/06/200408/17/200408/27/200409/28/200409/28/200410/21/200411/15/200412/06/2004

–––––––

10300850113014351243092512161010124612421242102011580935141910201025122415111147

126.84127.70131.00131.30132.25132.70133.07133.54133.96134.15134.10133.99134.05133.94134.14134.09134.36134.69135.00135.08135.71135.77136.20136.21136.44136.47136.43

2,249.62,248.72,245.42,245.12,244.22,243.72,243.32,242.92,242.42,242.22,242.32,242.42,242.42,242.52,242.32,242.32,242.02,241.72,241.42,241.32,240.72,240.62,240.22,240.22,240.02,239.92,240.0

VVVVVVVVVV

SS

V

S

V

SSS

V

S

V

S

V

SSSS

---------------------------

NWRPONWRPONWRPONWRPONWRPONWRPONWRPONWRPONWRPONWRPO

EMPEMP

NWRPO

EMP

NWRPO

EMPEMPEMP

NWRPO

EMP

NWRPO

EMP

NWRPO

EMPEMPEMPEMP

Basic Data  51
Table 3. Periodic water-level data at monitoring sites in Yucca Mountain region, 2004—Continued.

Site

number

(fig. 1)

U.S. Geological

Survey site

identification

Site name

Landsurface

 altitude

(feet above

sea level)

Height of

measurement

point (feet 

above land 

surface)

Water-level measurement

Date Time

Depth to 

water (feet

below land

surface)

Altitude of

water surface

(feet above

sea level)

Method Site status Data Source

AD-6 363213116133800 Tracer Well 3 2,402.3 0.4 01/14/2004

01/16/200402/18/200403/04/200404/08/200405/07/200406/08/200407/27/200408/13/200409/27/200410/22/200411/15/200412/07/2004

0900101510301115111511151145130011001545103011460845

41.8241.7841.7741.7941.8041.8641.7541.8541.9541.8542.0441.9041.95

2,360.52,360.52,360.52,360.52,360.52,360.42,360.62,360.42,360.42,360.42,360.32,360.42,360.4

SSSSSSSSSSSSS

-------------

EMPEMPEMPEMPEMPEMPEMPEMPEMPEMPEMPEMPEMP

AD-7a 363009116302702 Amargosa Desert 7a 2,305.0 0.78 01/22/2004

02/23/200403/11/200403/23/200404/12/200405/10/200406/07/200407/06/200408/27/200409/28/200410/21/200410/28/200411/15/200412/06/2004

08401314

–

11521227121412191139135810451157

–

14491126

80.3579.2979.0680.6780.4882.3182.2382.8685.0484.4084.6583.9283.1382.29

2,224.62,225.72,225.92,224.32,224.52,222.72,222.82,222.12,220.02,220.62,220.42,221.12,221.92,222.7

SS

T

SSSSSSSS

T

SS

--------------

EMPEMP

NDWR

EMPEMPEMPEMPEMPEMPEMPEMP

NDWR

EMPEMP

52 Selected Ground-Water Data for Yucca Mountain Region, January–December, 2004
Table 3. Periodic water-level data at monitoring sites in Yucca Mountain region, 2004—Continued.

Site

number

(fig. 1)

U.S. Geological

Survey site

identification

Site name

Landsurface

 altitude

(feet above

sea level)

Height of

measurement

point (feet 

above land 

surface)

Water-level measurement

Date Time

Depth to 

water (feet

below land

surface)

Altitude of

water surface

(feet above

sea level)

Method Site status Data Source

AD-8 362929116085701 Amargosa Desert 8 2,394.3 0.60 01/20/2004

02/23/200403/18/200404/26/200404/26/200405/18/200406/08/200406/08/200407/27/200408/13/200409/27/200410/22/200411/17/200412/08/2004

09101010075014241450080211001223120112241457141815041414

35.5935.6535.3736.6035.6635.3936.2835.3235.3835.9535.4735.5635.5335.63

2,358.72,358.62,358.92,357.72,358.62,358.92,358.02,359.02,358.92,358.42,358.82,358.72,358.82,358.7

SSSSSSSSSSSSSS

---

P

--

P

-------

EMPEMPEMPEMPEMPEMPEMPEMPEMPEMPEMPEMPEMPEMP

AD-9a 362835116264102 Amargosa Desert 9a 2,260.1 0.40 09/26/2003

01/22/200402/23/200402/24/200403/23/200404/26/200405/24/200406/07/200407/06/200407/06/200408/18/200408/27/200409/28/200409/30/200410/21/200411/15/200412/06/2004

14100857125215051418112711211153111211451025131011061030111914151038

86.1078.9678.5578.6579.9883.6185.8687.3085.8685.8087.0588.1488.7088.1884.6182.4781.85

2,174.02,181.12,181.62,181.42,180.12,176.52,174.22,172.82,174.22,174.32,173.02,172.02,171.42,171.92,175.52,177.62,178.2

VVVVVVVVVVVVVVVVV

-----------------

NWRPO

EMPEMP

NWRPO

EMPEMPEMPEMPEMP

NWRPONWRPO

EMPEMP

NWRPO

EMPEMPEMP

Basic Data  53
Table 3. Periodic water-level data at monitoring sites in Yucca Mountain region, 2004—Continued.

Site

number

(fig. 1)

U.S. Geological

Survey site

identification

Site name

Landsurface

 altitude

(feet above

sea level)

Height of

measurement

point (feet 

above land 

surface)

Water-level measurement

Date Time

Depth to 

water (feet

below land

surface)

Altitude of

water surface

(feet above

sea level)

Method Site status Data Source

AD-10 362525116274301 NA-9 Well 2,190.9 1.3 09/18/2003

01/22/200402/18/200402/24/200403/23/200404/07/200404/12/200405/10/200406/07/200406/28/200407/06/200408/18/200408/30/200409/28/200409/30/200410/21/200411/03/200412/06/2004

–

10471411133010291535113411051107160010150900121113101145105014280959

13.9213.7913.7913.7113.8013.8513.8913.8513.8813.9613.9714.0714.0214.0514.0213.9414.1713.99

2,177.02,177.12,177.12,177.22,177.12,177.02,177.02,177.02,177.02,176.92,176.92,176.82,176.92,176.82,176.92,177.02,176.72,176.9

V

SS

V

S

V

SSS

V

S

V

SS

V

SSS

------------------

NWRPO

EMPEMP

NWRPO

EMP

NWRPO

EMPEMPEMP

NWRPO

EMP

NWRPO

EMPEMP

NWRPO

EMPEMPEMP

AD-11 361954116181201 GS-3 Well 2,351.3 2.0 01/20/2004

02/18/200403/25/200404/15/200405/24/200406/16/200407/29/200408/30/200409/22/200410/13/200411/04/200412/06/2004

133913171105132512291256140413171535110110390911

208.97209.07208.83208.58208.09207.89207.66207.62207.84207.94208.04208.09

2,142.32,142.22,142.52,142.72,143.22,143.42,143.62,143.72,143.52,143.42,143.32,143.2

SSSSSSSSSSSS

------------

EMPEMPEMPEMPEMPEMPEMPEMPEMPEMPEMPEMP

54 Selected Ground-Water Data for Yucca Mountain Region, January–December, 2004
Table 3. Periodic water-level data at monitoring sites in Yucca Mountain region, 2004—Continued.

Site

number

(fig. 1)

U.S. Geological

Survey site

identification

Site name

Landsurface

 altitude

(feet above

sea level)

Height of

measurement

point (feet 

above land 

surface)

Water-level measurement

Date Time

Depth to 

water (feet

below land

surface)

Altitude of

water surface

(feet above

sea level)

Method Site status Data Source

AD-12 362014116133901 GS-1 Well 2,430.3 2.0 01/22/2004

02/19/200403/25/200404/15/200405/24/200406/10/200407/29/200408/26/200409/21/200410/08/200411/03/200412/02/2004

101214511022141013151417144010290953111209060938

81.0080.9880.9680.9280.9780.9881.0981.1381.1781.1981.1681.17

2,349.32,349.32,349.32,349.42,349.32,349.32,349.22,349.22,349.12,349.12,349.12,349.1

SSSSSSSSSSSS

------------

EMPEMPEMPEMPEMPEMPEMPEMPEMPEMPEMPEMP

AD-13 361724116324201 S-1 Well 2,703.2 2.0 01/23/2004

02/11/200403/25/200404/15/200405/17/200406/16/200407/29/200408/30/200409/22/200410/13/200411/04/200412/02/2004

111710401156121317080950110113061218115414001509

366.45367.50366.52367.20366.88366.86366.73366.43366.67366.53366.55366.63

2,336.82,335.72,336.72,336.02,336.32,336.32,336.52,336.82,336.52,336.72,336.62,336.6

SSSSSSSSSSSS

------------

EMPEMPEMPEMPEMPEMPEMPEMPEMPEMPEMPEMP

AD-14 361817116244701 Death Valley Jct Well 2,041.8 0.70 01/20/2004

02/19/200403/25/200404/15/200405/18/200406/10/200407/29/200408/26/200409/22/200410/13/200411/04/200412/02/2004

130914241133124913001218132414041450140014501602

2.672.382.582.332.322.312.762.662.762.702.772.50

2,039.12,039.42,039.22,039.52,039.52,039.52,039.02,039.12,039.02,039.12,039.02,039.3

SSSSSSSSSSSS

------------

EMPEMPEMPEMPEMPEMPEMPEMPEMPEMPEMPEMP

Basic Data  55
Table 3. Periodic water-level data at monitoring sites in Yucca Mountain region, 2004—Continued.

Site

number

(fig. 1)

U.S. Geological

Survey site

identification

Site name

Landsurface

 altitude

(feet above

sea level)

Height of

measurement

point (feet 

above land 

surface)

Water-level measurement

Date Time

Depth to 

water (feet

below land

surface)

Altitude of

water surface

(feet above

sea level)

Method Site status Data Source

AM-1 362858116195301 Rogers Spring Well 2,265.9 0.14 01/14/2004

02/02/200403/01/200403/11/200404/05/200404/06/200405/03/200406/09/200406/16/200407/22/200408/10/200408/26/200409/21/200409/28/200410/08/200410/25/200411/03/200412/02/200412/07/2004

1127101413571413131512351358155011501050134513061148110713451455133812571100

2.832.802.662.602.712.712.993.653.734.274.273.823.603.543.523.243.052.832.78

2,263.12,263.12,263.22,263.32,263.22,263.22,262.92,262.22,262.22,261.62,261.62,262.12,262.32,262.42,262.42,262.72,262.82,263.12,263.1

SS

T

SS

T

S

T

SS

T

SS

T

S

T

SS

T

-------------------

EMPEMP

USFWS

EMPEMP

USFWS

EMP

USFWS

EMPEMP

USFWS

EMPEMP

USFWS

EMP

USFWS

EMPEMP

USFWS

56 Selected Ground-Water Data for Yucca Mountain Region, January–December, 2004
Table 3. Periodic water-level data at monitoring sites in Yucca Mountain region, 2004—Continued.

Site

number

(fig. 1)

U.S. Geological

Survey site

identification

Site name

Landsurface

 altitude

(feet above

sea level)

Height of

measurement

point (feet 

above land 

surface)

Water-level measurement

Date Time

Depth to 

water (feet

below land

surface)

Altitude of

water surface

(feet above

sea level)

Method Site status Data Source

AM-2 362755116190401 Five Springs Well 2,343.2 1.17 06/20/1990

04/08/199111/20/199112/12/199101/14/199202/18/199203/18/199204/14/199204/28/199205/19/199206/16/199207/21/199208/19/199209/17/199210/21/199211/18/199212/16/199201/15/199302/16/199303/23/199304/21/199305/21/199305/25/199306/23/199307/14/199307/20/199307/28/199308/26/199309/24/199310/20/199311/17/199312/21/199301/19/199402/15/199403/22/1994

––––––––––––––

073016001330123017451700064013301530101515271100160307001300111007251100162010301205

-0.29-0.35-0.30-0.27-0.26-0.29-0.30-0.39-0.47-0.48-0.45-0.83-0.84-0.81-0.83-0.80-0.80-0.75-0.72-0.72-0.72-0.44-0.23-0.22-0.22-0.23-0.25-0.24-0.28-0.36-0.48-0.52-0.56-0.55-0.58

2,343.52,343.62,343.52,343.52,343.52,343.52,343.52,343.62,343.72,343.72,343.62,344.02,344.02,344.02,344.02,344.02,344.02,344.02,343.92,343.92,343.92,343.62,343.42,343.42,343.42,343.42,343.42,343.42,343.52,343.62,343.72,343.72,343.82,343.82,343.8

SSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSS

FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF

EMPEMPEMPEMPEMPEMPEMPEMPEMPEMPEMPEMPEMPEMPEMPEMPEMPEMPEMPEMPEMPEMPEMPEMP

NTS

EMP

NTS

EMPEMPEMPEMPEMPEMPEMPEMP

Basic Data  57
Table 3. Periodic water-level data at monitoring sites in Yucca Mountain region, 2004—Continued.

Site

number

(fig. 1)

U.S. Geological

Survey site

identification

Site name

Landsurface

 altitude

(feet above

sea level)

Height of

measurement

point (feet 

above land 

surface)

Water-level measurement

Date Time

Depth to 

water (feet

below land

surface)

Altitude of

water surface

(feet above

sea level)

Method Site status Data Source

AM-2 362755116190401 Five Springs Well 2,343.2 1.17 03/28/1994

04/05/199404/07/199404/19/199405/25/199406/10/199406/17/199407/01/199407/19/199408/24/199409/13/199409/20/199410/18/199411/09/199412/01/199412/14/199401/30/199502/13/199503/27/199504/19/199505/25/199506/22/199507/20/199508/23/199509/20/199510/25/199511/09/199512/20/199501/24/199602/23/199603/13/199604/18/199605/17/199606/13/199606/13/1996

12131330102513401100115001130817091511540834120511451045123516021530151512581050094508150840090010551040092009170900103313550950092809240953

-0.57-0.58-0.60-0.60-0.64-0.61-0.65-0.65-0.65-0.70-0.75-0.72-0.70-0.70-0.68-0.70-0.61-0.64-0.65-0.69-0.70-0.69-0.68-0.68-0.68-0.57-0.63-0.55-0.62-0.63-0.66-0.64-0.58-0.54-0.49

2,343.82,343.82,343.82,343.82,343.82,343.82,343.82,343.82,343.82,343.92,344.02,343.92,343.92,343.92,343.92,343.92,343.82,343.82,343.82,343.92,343.92,343.92,343.92,343.92,343.92,343.82,343.82,343.82,343.82,343.82,343.92,343.82,343.82,343.72,343.7

SSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSS

FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF

NTS

EMP

NTS

EMPEMPEMP

NTSNTS

EMPEMP

NTS

EMPEMPEMPEMP

NTS

EMPEMPEMPEMPEMPEMPEMPEMPEMPEMPEMPEMPEMPEMPEMPEMPEMPEMPEMP

58 Selected Ground-Water Data for Yucca Mountain Region, January–December, 2004
Table 3. Periodic water-level data at monitoring sites in Yucca Mountain region, 2004—Continued.

Site

number

(fig. 1)

U.S. Geological

Survey site

identification

Site name

Landsurface

 altitude

(feet above

sea level)

Height of

measurement

point (feet 

above land 

surface)

Water-level measurement

Date Time

Depth to 

water (feet

below land

surface)

Altitude of

water surface

(feet above

sea level)

Method Site status Data Source

AM-2 362755116190401 Five Springs Well 2,343.2 1.17 07/18/1996

07/31/199608/21/199609/24/199610/18/199610/29/199611/22/199612/18/199601/21/199702/19/199703/18/199704/22/199705/13/199706/09/199707/07/199708/20/199709/19/199710/14/199711/17/199712/11/199701/14/199802/27/199803/17/199804/16/199805/19/199806/16/199807/14/199808/12/199809/15/199810/27/199811/19/199812/17/199801/27/199902/19/199903/24/1999

13170911181113120815143510331454124608350945093508150800080010250815133013550955131512451030120208140710062007240812085008470910080508430841

0.210.210.230.240.230.240.230.230.220.230.220.220.190.190.190.200.220.230.220.230.240.230.220.220.220.230.210.220.220.220.220.230.240.240.23

2,343.02,343.02,343.02,343.02,343.02,343.02,343.02,343.02,343.02,343.02,343.02,343.02,343.02,343.02,343.02,343.02,343.02,343.02,343.02,343.02,343.02,343.02,343.02,343.02,343.02,343.02,343.02,343.02,343.02,343.02,343.02,343.02,343.02,343.02,343.0

SSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSS

FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF

EMPEMPEMPEMPEMPEMPEMPEMPEMPEMPEMPEMPEMPEMPEMPEMPEMPEMPEMPEMPEMPEMPEMPEMPEMPEMPEMPEMPEMPEMPEMPEMPEMPEMPEMP

Basic Data  59
Table 3. Periodic water-level data at monitoring sites in Yucca Mountain region, 2004—Continued.

Site

number

(fig. 1)

U.S. Geological

Survey site

identification

Site name

Landsurface

 altitude

(feet above

sea level)

Height of

measurement

point (feet 

above land 

surface)

Water-level measurement

Date Time

Depth to 

water (feet

below land

surface)

Altitude of

water surface

(feet above

sea level)

Method Site status Data Source

AM-2 362755116190401 Five Springs Well 2,343.2 1.17 04/13/1999

05/18/199906/15/199907/27/199908/25/199909/29/199910/07/199910/18/199911/04/199912/10/199901/21/200002/17/200003/14/200004/13/200005/01/200006/08/200007/05/200008/24/200009/18/200010/10/200011/07/200012/07/200001/08/200102/07/200103/20/200104/17/200105/02/200106/21/200107/18/200108/02/200109/10/200110/22/200111/07/200112/10/200101/08/2002

11111000071509271847102215471602110911451000164111550852135111531241141816091247101711521213124515371741093812400857111510241251152413301555

0.230.220.230.240.230.230.230.210.210.220.230.240.230.230.240.220.220.250.250.250.250.250.250.250.250.250.240.250.240.260.250.250.260.260.26

2,343.02,343.02,343.02,343.02,343.02,343.02,343.02,343.02,343.02,343.02,343.02,343.02,343.02,343.02,343.02,343.02,343.02,343.02,343.02,343.02,343.02,343.02,343.02,343.02,343.02,343.02,343.02,343.02,343.02,342.92,343.02,343.02,342.92,342.92,342.9

SSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSS

FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF

EMPEMPEMPEMPEMPEMPEMPEMPEMPEMPEMPEMPEMPEMPEMPEMPEMPEMPEMPEMPEMPEMPEMPEMPEMPEMPEMPEMPEMPEMPEMPEMPEMPEMPEMP

60 Selected Ground-Water Data for Yucca Mountain Region, January–December, 2004
Table 3. Periodic water-level data at monitoring sites in Yucca Mountain region, 2004—Continued.

Site

number

(fig. 1)

U.S. Geological

Survey site

identification

Site name

Landsurface

 altitude

(feet above

sea level)

Height of

measurement

point (feet 

above land 

surface)

Water-level measurement

Date Time

Depth to 

water (feet

below land

surface)

Altitude of

water surface

(feet above

sea level)

Method Site status Data Source

AM-2 362755116190401 Five Springs Well 2,343.2 1.17 02/07/2002

03/15/200204/22/200205/07/200206/14/200207/04/200208/07/200209/11/200210/25/200211/07/200212/09/200201/16/200302/06/200303/06/200304/03/200305/22/200306/13/200307/23/200308/19/200309/29/200310/27/200311/17/200312/05/200301/14/200402/02/200403/11/200404/05/200405/03/200406/16/200407/22/200408/26/200409/21/200410/08/200411/03/200412/02/2004

10451040154215321310084011571136134008271027122115181447142508541227075216581217154813041159123611251343125013251125103112361232132112561213

0.250.260.250.250.250.250.250.290.310.310.310.310.320.310.310.310.310.300.290.300.300.320.320.320.330.320.320.320.320.310.310.300.310.320.32

2,343.02,342.92,343.02,343.02,343.02,343.02,343.02,342.92,342.92,342.92,342.92,342.92,342.92,342.92,342.92,342.92,342.92,342.92,342.92,342.92,342.92,342.92,342.92,342.92,342.92,342.92,342.92,342.92,342.92,342.92,342.92,342.92,342.92,342.92,342.9

SSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSS

FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF

EMPEMPEMPEMPEMPEMPEMPEMPEMPEMPEMPEMPEMPEMPEMPEMPEMPEMPEMPEMPEMPEMPEMPEMPEMPEMPEMPEMPEMPEMPEMPEMPEMPEMPEMP

Basic Data 61
Table 3. Periodic water-level data at monitoring sites in Yucca Mountain region, 2004—Continued.

Site

number

(fig. 1)

U.S. Geological

Survey site

identification

Site name

Landsurface

 altitude

(feet above

sea level)

Height of

measurement

point (feet 

above land 

surface)

Water-level measurement

Date Time

Depth to 

water (feet

below land

surface)

Altitude of

water surface

(feet above

sea level)

Method Site status Data Source

AM-3 362555116205301 Ash Meadows 3 2,157.0 1.29 01/20/2004

02/02/200403/11/200404/05/200405/03/200406/16/200407/22/200408/26/200409/21/200410/13/200411/03/200412/02/2004

105112001439133914181032111013361128142511571135

21.8521.7121.2120.9420.8521.1221.6922.0822.0422.1121.8521.40

2,135.22,135.32,135.82,136.12,136.22,135.92,135.32,134.92,135.02,134.92,135.22,135.6

SSSSSSSSSSSS

------------

EMPEMPEMPEMPEMPEMPEMPEMPEMPEMPEMPEMP

AM-4 362532116172700 Devils Hole 2,360.0 – 01/06/2004

02/05/200402/17/200403/03/200403/04/200403/18/200404/01/200404/07/200404/16/200404/16/200405/01/200405/01/200405/17/200406/08/200406/08/200406/22/200407/08/200407/21/200407/30/200408/13/200409/02/200409/02/200409/19/200410/17/200412/20/2004

1018111511230831153315361510100312111302140514391127142514411157134608090723075506500707101409580940

2.142.192.152.111.931.941.902.182.112.062.062.032.212.102.102.182.092.092.222.282.042.042.062.072.12

2,357.92,357.82,357.82,357.92,358.12,358.12,358.12,357.82,357.92,357.92,357.92,358.02,357.82,357.92,357.92,357.82,357.92,357.92,357.82,357.72,358.02,358.02,357.92,357.92,357.9

RRRRRRRRRRRRRRRRRRRRRRRRR

-------------------------

NPSNPSNPSNPSNPSNPSNPSNPSNPSNPSNPSNPSNPSNPSNPSNPSNPSNPSNPSNPSNPSNPSNPSNPSNPS

62 Selected Ground-Water Data for Yucca Mountain Region, January–December, 2004
Table 3. Periodic water-level data at monitoring sites in Yucca Mountain region, 2004—Continued.

Site

number

(fig. 1)

U.S. Geological

Survey site

identification

Site name

Landsurface

 altitude

(feet above

sea level)

Height of

measurement

point (feet 

above land 

surface)

Water-level measurement

Date Time

Depth to 

water (feet

below land

surface)

Altitude of

water surface

(feet above

sea level)

Method Site status Data Source

AM-5 362529116171100 Devils Hole Well 2,404.1 0.9 01/16/2004

02/02/200403/01/200403/11/200404/05/200404/06/200405/03/200406/09/200406/16/200407/22/200408/10/200408/26/200409/21/200410/13/200410/26/200411/03/200412/02/200412/07/2004

125512281555122311501120122509201222113512011142110814430926112811151430

48.0348.0548.1048.1348.1748.1748.2148.2448.2248.1848.2448.2648.3248.2848.2648.2448.2748.27

2,356.12,356.02,356.02,356.02,355.92,355.92,355.92,355.92,355.92,355.92,355.92,355.82,355.82,355.82,355.82,355.92,355.82,355.8

SS

T

SS

T

S

T

SS

T

SSS

T

SS

T

------------------

EMPEMP

USFWS

EMPEMP

USFWS

EMP

USFWS

EMPEMP

USFWS

EMPEMPEMP

USFWS

EMPEMP

USFWS

AM-6 362432116165701 Point of Rocks North Well 2,318.8 0.0 01/16/2004

02/02/200403/01/200403/11/200404/05/200404/06/200405/03/200406/09/200406/10/200407/22/200408/10/200408/26/200409/21/200409/28/200410/08/200410/26/200411/03/200412/02/200412/07/2004

1347130517111100105910071134082813050912104510541025151411530950104910161440

21.3021.2421.2021.2021.2521.2221.3421.3221.3721.2821.3021.3021.3021.3221.4821.3221.3121.2521.31

2,297.52,297.62,297.62,297.62,297.62,297.62,297.52,297.52,297.42,297.52,297.52,297.52,297.52,297.52,297.32,297.52,297.52,297.62,297.5

SS

T

SS

T

S

T

SS

T

SS

T

S

T

SS

T

-------------------

EMPEMP

USFWS

EMPEMP

USFWS

EMP

USFWS

EMPEMP

USFWS

EMPEMP

USFWS

EMP

USFWS

EMPEMP

USFWS

Basic Data 63
Table 3. Periodic water-level data at monitoring sites in Yucca Mountain region, 2004—Continued.

Site

number

(fig. 1)

U.S. Geological

Survey site

identification

Site name

Landsurface

 altitude

(feet above

sea level)

Height of

measurement

point (feet 

above land 

surface)

Water-level measurement

Date Time

Depth to 

water (feet

below land

surface)

Altitude of

water surface

(feet above

sea level)

Method Site status Data Source

AM-7 362417116163600 Point of Rocks South Well 2,333.5 0.8 01/20/2004

02/02/200403/01/200403/11/200404/05/200404/06/200405/03/200406/10/200406/10/200407/22/200408/10/200408/26/200409/21/200409/28/200410/08/200410/26/200411/03/200412/02/200412/07/2004

1009133516481137113010381202133516480934111511171043153212241012101210491455

7.187.147.207.237.287.277.357.517.557.627.747.667.627.537.587.467.407.337.30

2,326.32,326.42,326.32,326.32,326.22,326.22,326.22,326.02,326.02,325.92,325.82,325.82,325.92,326.02,325.92,326.02,326.12,326.22,326.2

SS

T

SS

T

SS

T

S

T

SS

T

S

T

SS

T

-------------------

EMPEMP

USFWS

EMPEMP

USFWS

EMPEMP

USFWS

EMP

USFWS

EMPEMP

USFWS

EMP

USFWS

EMPEMP

USFWS

DV-3 362230116392901 Travertine Point 1 Well 2,728.4 2.0 01/20/2004

02/23/200403/25/200404/15/200405/18/200406/16/200407/29/200408/30/200409/22/200410/13/200411/04/200412/02/2004

120514551309111112170905112914341354130212361412

602.37602.39602.45602.44602.47602.45602.46602.50602.56602.52602.48602.59

2,126.02,126.02,126.02,126.02,125.92,126.02,125.92,125.92,125.82,125.92,125.92,125.8

VVVVVVVVVVVV

------------

EMPEMPEMPEMPEMPEMPEMPEMPEMPEMPEMPEMP

64 Selected Ground-Water Data for Yucca Mountain Region, January–December, 2004
Table 4. Daily mean water levels in borehole JF-3, 2004.

[–, data not available]

Day Daily mean water level (feet below land surface) calendar year January–December 2004 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

1 709.44 709.52 709.45 709.15 709.67 709.37 709.51 – 709.42 709.51 709.87 709.492 709.34 709.44 709.39 709.31 709.59 709.41 709.49 – 709.14 709.61 709.75 709.503 709.49 709.28 709.51 709.52 709.47 709.51 709.39 – 709.19 709.57 709.34 709.444 709.74 709.54 709.41 709.54 709.35 709.57 709.41 – 709.48 709.46 709.34 709.105 709.79 709.84 709.68 709.45 709.37 709.44 709.48 – 709.57 709.44 709.49 709.106 709.60 709.94 709.84 709.43 709.51 709.28 709.50 – 709.50 709.46 709.37 709.337 709.53 709.64 709.88 709.48 709.53 709.19 709.38 – 709.40 709.49 709.35 –8 709.68 709.66 709.71 709.45 709.46 – 709.35 – 709.38 709.49 709.38 –9 709.68 709.62 709.45 709.52 709.36 – 709.40 – 709.39 709.22 709.53 –10 709.52 709.63 709.38 709.54 709.15 709.67 709.47 – 709.45 709.23 709.51 –11 709.43 709.52 709.40 709.58 709.34 709.56 709.47 – 709.46 709.50 709.42 –12 709.58 – 709.28 709.51 709.54 709.54 709.43 – 709.30 709.57 709.34 –13 709.66 709.57 709.43 709.42 709.62 709.57 709.45 709.45 709.22 709.58 709.39 –14 709.43 709.47 709.56 709.39 709.53 709.45 709.53 709.45 709.29 709.52 709.57 –15 709.27 709.48 709.58 709.37 709.40 709.38 709.52 709.46 709.38 709.34 709.54 709.5616 709.34 709.58 709.52 709.37 709.33 709.44 709.45 709.46 709.38 709.23 709.55 709.7317 709.50 709.62 709.39 709.33 709.38 709.52 709.45 709.43 709.33 709.21 709.57 709.6218 709.55 709.35 709.36 709.62 709.50 709.57 709.45 709.34 709.20 709.29 709.48 709.4919 709.46 709.38 709.46 709.58 709.50 709.56 – 709.34 709.18 709.30 709.29 709.3820 709.45 709.35 709.59 709.53 709.49 709.47 – 709.39 709.60 709.30 709.27 709.0721 709.71 709.27 709.45 709.30 709.48 709.37 – 709.36 709.77 709.42 709.22 709.1522 709.74 709.24 709.27 709.47 709.45 709.44 – 709.26 709.68 709.65 709.33 709.4323 709.52 709.31 709.24 709.57 709.36 709.57 – 709.26 709.57 709.59 709.45 709.5124 709.21 709.60 709.37 709.53 709.41 709.56 – 709.38 709.50 709.44 709.61 709.5625 709.39 709.58 709.37 709.62 709.47 709.50 – 709.41 709.43 709.37 709.43 709.3226 709.65 709.32 709.42 709.66 709.50 709.41 – 709.34 709.38 709.28 709.39 709.1427 709.62 709.38 709.62 709.47 709.52 709.38 – 709.52 709.38 709.36 709.11 709.2328 709.55 709.54 709.73 709.09 709.36 709.44 – 709.48 709.33 709.63 709.46 709.2029 709.56 709.59 709.58 709.36 709.50 709.45 – 709.42 709.28 709.80 709.80 709.0630 709.33 – 709.34 709.62 709.61 709.48 – 709.43 709.32 709.64 709.68 –31 709.30 – 709.28 – – – – 709.47 – 709.60 – –MEAN 709.52 709.51 709.48 709.46 709.46 709.47 709.45 709.40 709.40 709.45 709.46 709.35MAX 709.79 709.94 709.88 709.66 709.67 709.67 709.53 709.52 709.77 709.80 709.87 709.73MIN 709.21 709.24 709.24 709.09 709.15 709.19 709.35 709.26 709.14 709.21 709.11 709.06(2004 Annual summary Mean 709.46 Maximum 709.94 Minimum 709.06)

Basic Data 65
Table 5. Daily mean water levels in borehole AD-6, 2004.

[–, data not available]

Day Daily mean water level (feet below land surface) calendar year January–December 2004 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

1 41.84 41.86 41.78 41.67 41.86 41.73 41.84 41.83 41.86 41.93 42.07 41.942 41.79 41.80 41.76 41.75 41.83 41.75 41.83 41.84 41.75 41.96 42.01 41.96

3 41.86 41.73 41.81 41.83 41.77 41.79 41.79 41.85 41.80 41.93 41.84 41.94

4 41.96 41.84 41.76 41.82 41.73 41.81 41.80 41.83 41.92 41.89 41.87 41.805 41.96 41.95 41.88 41.77 41.75 41.75 41.83 41.84 41.94 41.89 41.93 41.82

6 41.86 41.98 41.94 41.76 41.81 41.70 41.83 41.86 41.90 41.90 41.86 41.91

7 41.85 41.85 41.93 41.79 41.81 41.67 41.78 41.87 41.86 41.91 41.86 41.93

8 41.91 41.89 41.86 41.77 41.78 41.73 41.78 41.86 41.86 41.91 41.88 41.969 41.91 41.87 41.78 41.80 41.74 41.83 41.81 41.85 41.86 41.80 41.95 42.04

10 41.84 41.89 41.77 41.80 41.66 41.87 41.83 41.84 41.89 41.81 41.93 41.99

11 41.82 41.84 41.78 41.83 41.76 41.80 41.83 41.82 41.89 41.93 41.89 41.91

12 41.88 41.91 41.73 41.80 41.83 41.81 41.80 41.84 41.82 41.93 41.86 41.8913 41.91 41.87 41.80 41.76 41.84 41.82 41.82 41.87 41.80 41.93 41.89 41.96

14 41.80 41.84 41.84 41.76 41.79 41.77 41.85 41.87 41.83 41.90 41.96 41.98

15 41.75 41.84 41.83 41.75 41.74 41.75 41.85 41.87 41.87 41.84 41.93 41.97

16 41.79 41.87 41.81 41.76 41.73 41.78 41.82 41.87 41.85 41.81 41.95 42.0517 41.85 41.87 41.76 41.75 41.75 41.81 41.83 41.86 41.83 41.81 41.96 42.00

18 41.86 41.75 41.76 41.88 41.80 41.83 41.83 41.82 41.79 41.84 41.92 41.95

19 41.81 41.80 41.80 41.84 41.79 41.82 41.82 41.83 41.80 41.84 41.85 41.9220 41.81 41.77 41.84 41.81 41.79 41.79 41.82 41.85 41.98 41.83 41.86 41.80

21 41.92 41.75 41.78 41.72 41.79 41.75 41.81 41.83 42.02 41.88 41.85 41.85

22 41.92 41.73 41.71 41.81 41.78 41.79 41.80 41.80 41.97 41.97 41.90 41.96

23 41.83 41.76 41.71 41.84 41.74 41.84 41.81 41.81 41.93 41.92 41.94 41.9824 41.72 41.87 41.76 41.81 41.77 41.83 41.86 41.86 41.91 41.86 41.99 41.99

25 41.81 41.84 41.76 41.84 41.78 41.81 41.86 41.86 41.89 41.84 41.90 41.90

26 41.92 41.73 41.78 41.85 41.79 41.78 41.82 41.83 41.87 41.81 41.90 41.82

27 41.88 41.77 41.86 41.77 41.79 41.78 41.81 41.91 41.87 41.86 41.78 41.8628 41.84 41.84 41.89 41.62 41.72 41.80 41.83 41.88 41.85 41.96 41.96 41.83

29 41.86 41.85 41.82 41.78 41.80 41.81 41.82 41.86 41.84 42.02 42.09 41.77

30 41.75 – 41.73 41.87 41.84 41.82 41.81 41.86 41.85 41.94 42.02 41.9031 41.76 – 41.72 – 41.78 – 41.82 41.88 – 41.94 – 41.83

MEAN 41.85 41.83 41.80 41.79 41.78 41.79 41.82 41.85 41.87 41.89 41.92 41.92

MAX 41.96 41.98 41.94 41.88 41.86 41.87 41.86 41.91 42.02 42.02 42.09 42.05

MIN 41.72 41.73 41.71 41.62 41.66 41.67 41.78 41.80 41.75 41.80 41.78 41.77(2004 Annual summary Mean 41.84 Maximum 42.09 Minimum 41.62)

66 Selected Ground-Water Data for Yucca Mountain Region, January–December, 2004
Table 8. Ground-water-discharge data at monitoring sites in Yucca Mountain region, 2004—Continued.

Site

number

(fig.1)

U.S. Geological

Survey site

identification

Site name

Discharge measurement

Date Time

Discharge

(gallons

per minute)

Method Data

source

AM- 1a 362924116203001 Fairbanks Spring 01/15/2004 1425 1,700 C USFWS

03/01/2004 1504 1,700 C USFWS

03/05/2004 1131 1,600 C EMP

04/06/2004 1339 1,800 C USFWS

05/14/2004 1230 1,800 C USFWS

 

05/28/2004 1122 1,600 C EMP

06/09/2004 1312 1,800 C USFWS

08/10/2004 1407 1,800 C USFWS

09/03/2004 1015 1,700 C EMP

09/28/2004 1140 1,800 C USFWS

 

10/25/2004 1525 1,800 C USFWS

12/01/2004 1113 1,600 C EMP

12/07/2004 1017 1,800 C USFWS

AM- 2 362755116190401 Five Springs Well 01/14/2004 1230 38 V EMP

02/02/2004 1116 38 V EMP

03/11/2004 1335 38 V EMP

04/05/2004 1247 35 V EMP

05/03/2004 1320 34 V EMP

 

06/16/2004 1120 33 V EMP

07/22/2004 1028 34 V EMP

08/26/2004 1230 34 V EMP

09/21/2004 1224 33 V EMP

10/08/2004 1315 34 V EMP

 

11/03/2004 1303 35 V EMP

12/02/2004 1221 35 V EMP

AM- 5a 362502116192301 Crystal Pool 03/03/2004 946 3,100 C USFWS

03/18/2004 1303 2,500 A EMP

04/05/2004 1025 3,000 C USFWS

05/25/2004 1350 2,800 A EMP

06/25/2004 1153 2,800 C USFWS

09/03/2004 1216 2,900 A EMP

09/23/2004 1010 3,000 C USFWS

12/09/2004 1240 3,200 A EMP

12/09/2004 1515 2,600 C USFWS

Table 8. Ground-water-discharge data at monitoring sites in Yucca Mountain region, 2004.

Site number: Alphanumeric identifier used to designate sites on map and tables. First part represents hydrographic area in which site is located.

Hydrographic areas: AD or AM, Amargosa Desert; DV, Death Valley. Second part is sequential numbering representing relative location of site within hydrographic area or Ash Meadows spring-discharge area; numbering order generally is north to south, then west to east.

U.S. Geological Survey site identification: Unique identification number for site as stored in files and data bases of U.S. Geological Survey (USGS).

Discharge: Reported to two significant figures. Discharge measured at site AM-2 represents a combination of flow directly through slotted 

casing at land surface and leakage from the casing’s annular space. Water-level data for site AM-2 are listed in table 3.

Method: Method used to measure discharge. A, acoustic-doppler velocimeter; C, vertical-axis current meter; V, volumetric; Z, discharge represents monthly 

mean discharge on basis of continually recorded stage.

Data source: EMP, Environmental-Monitoring Program (USGS); NPS, National Park Service; USFWS, U.S. Fish and Wildlife Service.

[–, measurement time not available or not applicable]

Basic Data 67
Table 8. Ground-water-discharge data at monitoring sites in Yucca Mountain region, 2004—Continued.

Site

number

(fig.1)

U.S. Geological

Survey site

identification

Site name

Discharge measurement

Date Time

Discharge

(gallons

per minute)

Method Data

source

AM- 8 362230116162001 Big Spring 03/05/2004 911 950 A EMP

03/09/2004 1534 1,000 C USFWS

04/05/2004 1520 1,100 C USFWS

05/25/2004 1148 830 A EMP

06/29/2004 1053 1,100 C USFWS

 

09/03/2004 1342 1,300 A EMP

09/23/2004 1500 1,100 C USFWS

12/01/2004 1321 1,300 C EMP

DV- 1 362728116501101 Texas Spring 01/15/2004 – 200 Z NPS

02/15/2004 – 200 Z NPS

03/15/2004 – 200 Z NPS

03/17/2004 1224 210 C EMP

04/15/2004 – 200 Z NPS

 

05/15/2004 – 190 Z NPS

05/26/2004 1248 220 A EMP

06/15/2004 – 190 Z NPS

07/15/2004 – 190 Z NPS

08/15/2004 – 190 Z NPS

 

09/15/2004 – 190 Z NPS

09/15/2004 1210 190 C EMP

10/15/2004 – 190 Z NPS

11/15/2004 – 200 Z NPS

11/30/2004 1416 190 C EMP

 

12/15/2004 – 200 Z NPS

DV- 2 362252116425301 Navel Spring 03/17/2004 1422 0.86 V EMP

05/26/2004 1422 0.84 V EMP

09/28/2004 1528 0.85 V EMP

11/30/2004 1230 0.82 V EMP

68 Selected Ground-Water Data for Yucca Mountain Region, January–December, 2004
Table 9. Estimated annual ground-water withdrawals from wells in Yucca Mountain region, 2004.

Ground-water subbasin

 (fig. 1)

Hydrographic area

 (fig. 1)

Ground-water withdrawal

(millions of gallons)

Alkali Flat-Furnace Creek Ranch Amargosa Desert1 4,391

 Crater Flat2 16.1

 Jackass Flats2 13.8

Ash Meadows Amargosa Desert1 (excluding Ash Meadows area) 19

Amargosa Desert1 (Ash Meadows area) 3

 Mercury Valley2 67.8

1

 Data recompiled from ground-water pumpage inventory (by Nevada Divison of Water Resources) for entire Amargosa Desert. Data are converted to 

millions of gallons (325,851 gallons per acre-foot) for consistency with other data tabulated and are rounded to nearest 1 million gallons.

2

 Data reported, estimated, or recompiled from flowmeter readings and listed to nearest 0.1 million gallons.

Table 10. Minimum, maximum, and median water-level altitudes, and average deviation of measurements, at selected boreholes in 

Jackass Flats for the baseline period 1992-93 and for calendar years 1994 through 2004—Continued. 

Site

number

(fig. 1)

Calendar

year(s) Number

Water level (feet above sea level) Average

deviation

(feet)

Change in

median

Minimum Maximum Median (feet)

JF-1 1992–93 20 2391.9 2392.7 2392.5 0.1 N/A

2004 16 2393.0 2393.6 2393.4 0.1 0.9

2003 16 2393.0 2393.6 2393.3 0.1 0.8

2002 16 2393.0 2393.4 2393.2 0.1 0.7

2001 18 2392.8 2393.3 2393.0 0.1 0.5

2000 14 2392.8 2393.4 2392.8 0.1 0.3

1999 12 2392.3 2393.0 2392.7 0.1 0.2

1998 22 2392.3 2392.8 2392.5 0.1 0.0

1997 10 2392.1 2392.6 2392.4 0.1 -0.1

1996 8 2392.0 2392.6 2392.3 0.2 -0.2

1995 7 2392.3 2392.8 2392.5 0.2 0.0

1994 12 2392.1 2392.6 2392.3 0.1 -0.2

Table 10. Minimum, maximum, and median water-level altitudes, and average deviation of measurements, at selected boreholes in 

Jackass Flats for the baseline period 1992-93 and for calendar years 1994 through 2004. Excludes water-level altitudes that may reflect 

short-term conditions at a site.

Calendar years: Years for which measurements were used to calculate summary statistics. Italics indicate 1992-93 baseline period.

Number: Number of water-level measurements for year(s) specified. For JF-2 (1992-93), JF-2a (1992-97), and JF-3, value represents number of daily mean 

water levels.

Water level: Based on periodic water-level measurements for JF-1, JF-2 (after 1993), JF-2a (after 1997), J-13, J-11, and J-12. Based on daily mean water levels 

for JF-2 (1992-93), JF-2a (1992-97), and JF-3.

 Minimum: Minimum water-level altitude or minimum daily mean water-level altitude for year(s) specified.

 Maximum: Maximum water-level altitude or maximum daily mean water-level altitude for year(s) specified.

 Median: Statistically representative water-level altitude calculated from periodic measurements or daily mean water levels for year(s) specified.

Average deviation: Calculated dispersion of measurements about median water-level altitude. Average deviation is equal to sum of absolute differences between 

measured water levels and median, divided by number of measurements.

Change in median: Differences between median water level for calendar years 1994 through 2004 compared with the 1992-93 baseline period. Minus sign indicates that median water-level altitude was lower for the specified year than for the baseline period.

[Abbreviations and symbols: N/A, not applicable (data field is not related to referenced data set); --, transducer installed in site JF-2 prevented periodic measurement for most of 2002]

Basic Data 69
Table 10. Minimum, maximum, and median water-level altitudes, and average deviation of measurements, at selected boreholes in 

Jackass Flats for the baseline period 1992-93 and for calendar years 1994 through 2004—Continued. 

Site

number

(fig. 1)

Calendar

year(s) Number

Water level (feet above sea level) Average

deviation

(feet)

Change in

median

Minimum Maximum Median (feet)

JF-2 1992–93 718 2391.7 2392.8 2392.1 0.1 N/A

2004 12 2392.5 2392.8 2392.7 0.0 0.6

2003 10 2392.6 2392.9 2392.6 0.1 0.5

2002 1 – – – – –

2001 18 2392.4 2393.2 2392.8 0.2 0.7

2000 14 2392.3 2393.2 2392.7 0.2 0.6

1999 13 2392.0 2392.7 2392.5 0.1 0.4

1998 21 2391.8 2392.6 2392.1 0.1 0.0

1997 11 2391.8 2392.4 2392.0 0.1 -0.1

1996 7 2391.6 2392.3 2392.1 0.2 0.0

1995 9 2392.2 2392.5 2392.4 0.1 0.3

1994 9 2392.0 2392.6 2392.2 0.1 0.1

JF-2a 1992–93 707 2466.9 2469.2 2468.7 0.3 N/A

2004 12 2471.1 2473.1 2471.4 0.5 2.7

2003 14 2471.0 2473.2 2471.5 0.7 2.8

2002 16 2470.5 2471.3 2471.0 0.2 2.3

2001 18 2470.8 2471.2 2471.0 0.1 2.3

2000 14 2470.1 2471.1 2470.8 0.3 2.1

1999 13 2469.8 2470.4 2470.2 0.1 1.5

1998 20 2469.8 2470.4 2470.0 0.1 1.3

1997 267 2468.8 2470.0 2469.5 0.1 0.8

1996 214 2468.6 2469.6 2469.3 0.1 0.6

1995 357 2468.7 2469.3 2469.1 0.1 0.4

1994 356 2468.4 2469.4 2469.0 0.1 0.3

J-13 1992–93 37 2389.6 2390.7 2389.9 0.1 N/A

2004 16 2389.2 2390.8 2389.9 0.6 0.0

2003 19 2390.2 2390.9 2390.6 0.2 0.7

2002 15 2390.0 2390.8 2390.4 0.1 0.5

2001 17 2390.1 2390.9 2390.4 0.2 0.5

2000 13 2390.0 2391.0 2390.2 0.2 0.3

1999 13 2389.6 2390.2 2390.0 0.1 0.1

1998 20 2389.4 2390.2 2389.8 0.1 -0.1

1997 11 2389.5 2389.9 2389.6 0.1 -0.3

1996 8 2389.2 2389.9 2389.6 0.1 -0.3

1995 11 2389.6 2390.4 2389.8 0.1 -0.1

1994 23 2389.4 2390.0 2389.7 0.1 -0.2

70 Selected Ground-Water Data for Yucca Mountain Region, January–December, 2004
Table 10. Minimum, maximum, and median water-level altitudes, and average deviation of measurements, at selected boreholes in 

Jackass Flats for the baseline period 1992-93 and for calendar years 1994 through 2004—Continued. 

Site

number

(fig. 1)

Calendar

year(s) Number

Water level (feet above sea level) Average

deviation

(feet)

Change in

median

Minimum Maximum Median (feet)

J-11 1992–93 20 2401.9 2402.7 2402.2 0.1 N/A

2004 16 2402.2 2402.8 2402.5 0.1 0.3

2003 17 2402.2 2402.8 2402.6 0.1 0.4

2002 16 2402.1 2402.7 2402.5 0.1 0.3

2001 18 2402.3 2403.0 2402.6 0.2 0.4

2000 14 2402.3 2403.2 2402.4 0.1 0.2

1999 14 2402.2 2402.8 2402.4 0.1 0.2

1998 20 2402.2 2402.9 2402.6 0.2 0.4

1997 10 2402.2 2402.8 2402.6 0.2 0.4

1996 8 2402.2 2402.6 2402.4 0.1 0.2

1995 11 2402.2 2402.5 2402.4 0.1 0.2

1994 12 2402.0 2402.5 2402.3 0.1 0.1

J-12 1992–93 36 2387.9 2389.0 2388.3 0.1 N/A

2004 16 2388.6 2389.1 2388.9 0.1 0.6

2003 18 2388.4 2389.0 2388.8 0.1 0.5

2002 16 2388.4 2388.8 2388.6 0.1 0.3

2001 18 2388.3 2388.6 2388.5 0.1 0.2

2000 14 2387.9 2388.6 2388.4 0.1 0.1

1999 12 2388.1 2388.5 2388.3 0.1 0.0

1998 17 2387.9 2388.3 2388.0 0.1 -0.3

1997 16 2387.7 2388.4 2388.0 0.1 -0.3

1996 18 2387.5 2388.5 2388.0 0.1 -0.3

1995 16 2388.0 2388.3 2388.2 0.1 -0.1

1994 24 2387.8 2389.1 2388.2 0.2 -0.1

JF-3 1992–93 582 2387.7 2388.8 2388.3 0.1 N/A

2004 327 2388.4 2389.2 2388.8 0.1 0.5

2003 365 2388.3 2389.3 2388.8 0.1 0.5

2002 314 2388.1 2389.0 2388.6 0.1 0.3

2001 331 2388.1 2389.0 2388.5 0.1 0.2

2000 366 2387.9 2388.8 2388.4 0.1 0.1

1999 365 2387.6 2388.6 2388.2 0.1 -0.1

1998 316 2387.6 2388.6 2388.0 0.1 -0.3

1997 345 2387.4 2388.8 2388.0 0.1 -0.3

1995 347 2387.7 2388.4 2388.1 0.1 -0.2

1994 284 2387.6 2388.6 2388.1 0.1 -0.2

Basic Data 71
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72 Report Title
For more information concerning the research in this report, contact

Director, Nevada Water Science Center

U.S. Geological Survey

2730 N. Deer Run Rd.

Carson City, NV 89701

Email: GS-W-NV Public Information@usgs.gov

http://nevada.usgs.gov
La Camera and others—Selected Ground-Water Data for Yucca Mountain Region, Southern Nevada and Eastern California, January–December 2004—Open-File Report 2006-1285