Status of Water Levels and Selected Water-Quality 

Conditions in the Mississippi River Valley Alluvial 

Aquifer in Eastern Arkansas, 2002

Missouri

Oklahoma

Texas

Louisiana

Mississippi

Tennessee

MISSISSIPPI

RIVER

36

35

34

94 93 92 91

90O

O

O O O

O

O

O

0 20 40 MILES

0 20 40 KILOMETERS

MISSISSIPPI

ALLUVIAL

PLAIN

PLAIN

ASHLEY

COUNTY

FALL

LINE

CROWLEYS RIDGE

MONTICELLO

RIDGE

OZARK PLATEAUS

ARKANSAS VALLEY

OUACHITA

MOUNTAINS

FALL LINE

WEST GULF

COASTAL

PLAIN

HIGHLANDS INTERIOR

COASTAL

EXPLANATION

STUDY AREA

Prepared in cooperation with the

ARKANSAS SOIL AND WATER CONSERVATION COMMISSION and the

ARKANSAS GEOLOGICAL COMMISSION

U.S. Department of the Interior

U.S. Geological Survey

Scientific InvestigationsReport 2004-5129
Status of Water Levels and Selected WaterQuality Conditions in the Mississippi River 

Valley Alluvial Aquifer in Eastern Arkansas, 

2002

By T.B. Reed

U.S. Department of the Interior

U.S. Geological Survey

Prepared in cooperation with the

ARKANSAS SOIL AND WATER CONSERVATION COMMISSION and the

ARKANSAS GEOLOGICAL COMMISSION

Scientific Investigations Report 2004-5129
U.S. Department of the Interior

Gale A. Norton, Secretary

U.S. Geological Survey

Charles G. Groat, Director

U.S. Geological Survey, Reston, Virginia: 2004

For sale by U.S. Geological Survey, Information Services

Box 25286, Denver Federal Center

Denver, CO 80225

For more information about the USGS and its products:

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Any use of trade, product, or firm names in this publication is for descriptive purposes only and does not imply 

endorsement by the U.S. Government.

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.
CONTENTS

 iii

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

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

Aquifer Description .................................................................................................................................................................................. 2

Methods ..................................................................................................................................................................................................... 3

Water Levels ............................................................................................................................................................................................. 3

Potentiometric Surface................................................................................................................................................................ 3

Long-Term Water-Level Changes............................................................................................................................................... 4

Comparison of Water-Level Changes from 1998 to 2002 ...................................................................................................... 19

Specific Conductance ........................................................................................................................................................................... 19

Summary .................................................................................................................................................................................................. 19

Selected References ............................................................................................................................................................................. 20

Appendix 1. Information pertaining to water levels measured in wells completed in the Mississippi River Valley

alluvial aquifer in eastern Arkansas, spring 2002 ............................................................................................................... 23

Appendix 2. Specific conductance and temperature data from wells completed in the Mississippi River Valley

alluvial aquifer in eastern Arkansas, summer 2002............................................................................................................ 51

PLATES

[In pocket]

1. Map showing potentiometric surface of the Mississippi River Valley alluvial aquifer, spring 2000

2. Map showing potentiometric difference for the Mississippi River Valley alluvial aquifer from 1998 to 2002

FIGURES

1. Map showing location of study area ........................................................................................................................................ 2

2. Diagram showing well-numbering system............................................................................................................................... 3

3. Water-level hydrographs for selected wells in the Mississippi River Valley alluvial aquifer in eastern Arkansas .... 5

TABLES

1. Median decline in water levels by county for the period of record for wells completed in the Mississippi River

Valley alluvial aquifer in eastern Arkansas.......................................................................................................................... 4
Status of Water Levels and Selected Water-Quality 

Conditions in the Mississippi River Valley Alluvial Aquifer 

in Eastern Arkansas, 2002

By T.B. Reed

Abstract

During the spring of 2002, water levels were measured in 

737 wells completed in the Mississippi River Valley alluvial 

aquifer in eastern Arkansas. The regional direction of groundwater flow is generally to the south and east except where 

affected by intense ground-water withdrawals. In 2002, the 

highest water-level altitude measured was 287 feet above 

National Geodetic Vertical Datum of 1929 in northeastern Clay 

County. The lowest water-level altitude measured was 78 feet 

above National Geodetic Vertical Datum of 1929 in southwestern Ashley County. Comparisons of water-level changes in 

cones of depression from 1998 to 2002 show increases and 

decreases in depth or areal extent. A large depression in the 

potentiometric surface was located in Arkansas, Lonoke, and 

Prairie Counties during 1998 and persisted in 2002. Water levels generally declined in this depression in Lonoke County but 

rose in Arkansas County. Two shallower cones of depressions 

were located in Craighead, Cross, and Poinsett Counties and St. 

Francis, Woodruff, Lee, and Monroe Counties west of Crowleys Ridge during 1998. These coalesced into a single depression by 2002. Water-level data from 143 wells with 26 or more 

years of record indicate long-term water levels in the alluvial 

aquifer declined an average of about 0.3 foot per year from 1977 

to 2002. Water levels generally declined throughout most of the 

aquifer from 1998 to 2002.

Specific conductance measurements made on water samples collected from 64 wells ranged from 262 microsiemens per 

centimeter in a well in Randolph County to 2,730 microsiemens 

per centimeter in a well in Chicot County. 

Introduction

The Mississippi Alluvial Plain (fig. 1) encompasses an 

area of approximately 32,000 square miles and includes parts of 

Arkansas and nearby states. Approximately 54 percent of the 

Mississippi Alluvial Plain covers the eastern one-third of 

Arkansas. The Mississippi River Valley alluvial aquifer (herein 

referred to as the alluvial aquifer) underlies the Mississippi 

Alluvial Plain in eastern Arkansas. Within Arkansas, the alluvial aquifer extends from the Missouri State line south to the 

Louisiana State line, and from the Mississippi River west to the 

Fall Line (the physiographic boundary between the West Gulf 

Coastal Plain and the Interior Highlands) and the Monticello 

Ridge (a topographic feature in southeastern Arkansas), and 

near the western Ashley County line (fig. 1).

The land use in eastern Arkansas has become more agricultural 

since 1900 with production consisting predominately of rice, 

soybeans, cotton, and in recent years aquaculture, all of which 

are highly dependent on the availability of water. Eastern 

Arkansas receives sufficient precipitation to support these 

crops, receiving an average 46 to 54 inches of precipitation 

annually (Freiwald, 1984). However, during a critical portion of 

the growing season from late spring through early summer, 

most precipitation in eastern Arkansas falls as rain from widely 

scattered thunderstorms. Increasingly farmers are relying on 

water from the alluvial aquifer for agriculture and aquaculture 

irrigation.

In 1985, estimated water withdrawals from the alluvial 

aquifer in Arkansas totaled about 3,500 million gallons per day 

(Mgal/d) (Holland, 1987); estimated withdrawals increased to 

4,300 Mgal/d in 1990 (Holland, 1993). In 1995, estimated water 

withdrawals totaled about 5,062 Mgal/d (Holland, 1999); and in 

2000, estimated water withdrawals totaled about 7,050 Mgal/d 

(T.W. Holland, U.S. Geological Survey, written commun., 

2004). The increase in estimated water withdrawals from 1995 

to 2000 in the alluvial aquifer in Arkansas is about 39 percent.

The U.S. Geological Survey (USGS), in cooperation with 

the Arkansas Soil and Water Conservation Commission 

(ASWCC) and the Arkansas Geological Commission, conducted a study of water levels and selected water-quality conditions in the alluvial aquifer in eastern Arkansas. The U.S. 

Department of Agriculture-Natural Resources Conservation 

Service (NRCS) also measured water levels in wells completed 

in the alluvial aquifer and provided these data to the ASWCC. 

These data were made available to the USGS and were incorporated into the database used to develop a potentiometric-surface 

map of the alluvial aquifer for the spring of 2002. In the spring 

of 2002, a total of 737 water-level measurements (380 by the 

USGS and 357 by the NRCS) were collected.

During the summer of 2002, water samples from 64 wells 

completed in the alluvial aquifer were analyzed for specific 

conductance. These measurements provided information for a 

database of selected water-quality data for the alluvial aquifer. 
Missouri

Oklahoma

Texas

Louisiana

Mississippi

Tennessee

MISSISSIPPI

RIVER

36

35

34

94 93 92 91

90O

O

O O O

O

O

O

0 20 40 MILES

0 20 40 KILOMETERS

MISSISSIPPI

ALLUVIAL

PLAIN

PLAIN

ASHLEY

COUNTY

FALL

LINE

CROWLEYS

RIDGE

MONTICELLO

RIDGE

OZARK PLATEAUS

ARKANSAS VALLEY

OUACHITA

MOUNTAINS

FALL LINE

WEST GULF

COASTAL

PLAIN

HIGHLANDS

INTERIOR

COASTAL

EXPLANATION

STUDY AREA

2 Status of Water Levels and Selected Water-Quality Conditions in the Mississippi River Valley Alluvial Aquifer in Eastern 

Arkansas, 2002

Figure 1. Location of study area.

The purpose of this report is to describe the status and 

trends of water levels and selected water-quality constituents in 

the alluvial aquifer. The report includes maps, long-term hydrographs, and data tables. Scheduled monitoring and evaluation of 

conditions in the alluvial aquifer provide information necessary 

for resource management.

The well-numbering system used in this report is based 

upon the locations of the wells according to the Federal land 

survey used in Arkansas. The component parts of a well number 

are the township number; the range number; the section number; three letters which indicate respectively, the quarter section, the quarter-quarter section, and the quarter-quarter-quarter 

section in which the well is located; and a sequence number of 

the well in the quarter-quarter-quarter section. The letters are 

assigned counterclockwise, beginning with “A” in the northeast 

quarter or quarter-quarter or quarter-quarter-quarter section in 

which the well is located. For example, well 01S03W04BBD16 

(fig. 2) is located in Township 1 South, Range 3 West, and in 

the southeast quarter of the northwest quarter of the northwest 

quarter of section 4. This well is the 16th well in this quarterquarter-quarter section of section 4 from which data were collected.

Aquifer Description

The alluvial aquifer comprises alluvial and terrace deposits 

of Quaternary age (Ackerman, 1996). Lithologically, the Quaternary alluvial and terrace deposits are similar, consisting of 

unconsolidated sediments that grade from gravel and coarse 

sand in the lower sections to silt and clay in the upper sections 

(Boswell and others, 1968). Because coarse sediments are contained in the lower sections of the alluvial and terrace deposits, 

the aquifer is capable of sustaining high yielding wells (Ackerman, 1996). Finer sediments in the upper sections of the alluvial 

and terrace deposits form a confining unit above much of the 

aquifer. This confining unit is thin or has been completely 

removed by erosion in some areas, especially near large rivers 

within the study area (Gonthier and Mahon, 1993). Channel fill, 

point bar, and backswamp deposits associated with present or 

former channels of large rivers have produced abrupt changes 

in lithology and result in large spatial variations in the hydraulic 

properties of the aquifer (Joseph, 1999). 

Sedimentary rocks and unconsolidated sediments of Tertiary age or older underlie the alluvial aquifer and have been 

modified by geologic processes into an undulating surface 

(Mahon and Poynter, 1993). In most areas, these rocks and sediments are less permeable than the overlying alluvial and terrace 

deposits of Quaternary age and form the confining unit below 

the alluvial aquifer (Boswell and others, 1968).
A

B

A

C

D

C

D

B

A

B

A

C

D

C

D

C

D

B

A

B

C A DB

6

3

2

1

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

R-3-W

T-1-S

SECTION 4

WELL 01S03W04BBD16

4S 3S 2S 1S

5W 4W 3W 2W 1W 1E 2E 3E 4E

PRINCIPAL MERIDIAN

BASELINE

WEST

RANGES

EAST SOUTH

TOWNSHIPS

NORTH

Methods 3

Figure 2. Well-numbering system.

In the northern half of the study area, the alluvial and terrace deposits of Quaternary age are separated by Crowleys 

Ridge (fig. 1), an erosional remnant of Tertiary-age deposits 

trending north-south from the Missouri-Arkansas border to 

northeastern Phillips County. Crowleys Ridge is a prominent 

topographic feature on the otherwise low-relief surface of the 

Mississippi Alluvial Plain and forms a physical barrier to 

ground-water flow in the alluvial aquifer.

Methods

Personnel from the USGS and the Natural Resources Conservation Service (NRCS) measured water levels from February 

2002 to May 2002 from wells screened in the alluvial aquifer. 

Measurements were made using steel or electric tapes graduated in hundredths of a foot (USGS personnel) or in tenths of a 

foot (NRCS personnel). The steel and electric tapes used by 

USGS personnel were calibrated during January 2002 prior to 

collecting measurement from wells.

Well locations were measured using Global Positioning 

System receivers to acquire the horizontal coordinate information, latitude and longitude, based on the North American 

Datum of 1983. The latitude and longitude of the well location 

were transferred to the topographic map and altitude of the well 

(National Geodetic Vertical Datum of 1929) was determined 

from the contours at the location on the map.

Specific conductance data were measured from selected 

wells using specific conductivity meters with temperature compensation. Specific conductance is a measure of the electrical 

conductance of a substance. As the dissolved solid concentration in ground water increases, specific conductance increases. 

Water Levels

Water-level measurements collected in wells screened in 

the alluvial aquifer (Appendix 1) were used to produce a 

regional potentiometric-surface map (plate 1). Short-term 

water-level changes in cones of depression in the potentiometric surface are shown by comparing contour lines for 1998, 

2000, and 2002 from previous reports (Stanton and others, 

1998; Joseph, 1999; Schrader, 2001). Data from wells that have 

water-level measurements with 26 or more years of record were 

used to produce hydrographs shown on figure 3. The waterlevel changes shown in the hydrographs indicate long-term 

changes in hydrologic conditions. Long-term water-level 

changes shown by the hydrographs reflect the development of 

the cones of depression in the potentiometric surface.

Potentiometric Surface

The potentiometric-surface map (plate 1) shows the altitude at which water would have risen in tightly cased wells 

screened in the alluvial aquifer. The map on plate 1 is based on 

737 water-level measurements (by USGS and NRCS) made in 

wells during the spring of 2002 (appendix 1). The surface was 

mapped using the altitude of the water levels measured in the 

wells and is represented on the map by contours that connect 

points of equal value. The general direction of ground-water 

flow is perpendicular to the contours in the direction of decreasing potentiometric altitude.

The regional direction of ground-water flow is generally to 

the south and east except where flow is affected by “intense” 

ground-water withdrawals; however, the flow direction is 

affected over substantial areas by cones of depression. In 2002, 

the highest measured water-level altitude of 287 feet above 

National Geodetic Vertical Datum of 1929 (NGVD of 1929) 

was in northeastern Clay County. The lowest measured waterlevel altitude of 78 feet above NGVD of 1929 was in southwestern Ashley County.

Previous reports described three large cones of depression 

in the alluvial aquifer potentiometric surface (Stanton and others, 1998; Joseph, 1999; Schrader, 2001). The depressions or 

other areas of reduced water level are shaded on plate 1. A large, 

elongated area of depression extended across Arkansas, 

Lonoke, and Prairie Counties. Two shallower potentiometric 
4 Status of Water Levels and Selected Water-Quality Conditions in the Mississippi River Valley Alluvial Aquifer in Eastern

Arkansas, 2002

depressions were documented in Lee, Monroe, St. Francis, and 

Woodruff Counties, and also in Craighead, Cross, and Poinsett 

Counties. 

A comparison of water-level altitudes from 1998 to 2002 

at the lowest point in the cone of depression in central Arkansas 

County indicates that water levels generally have recovered. 

The lowest measured water-level altitudes in the alluvial aquifer in Arkansas County in 1998, 2000, and 2002 were 78, 80, 

and 86 ft above NGVD of 1929, respectively (Joseph, 1999, p. 

22; Schrader, 2001, p. 28). The area enclosed by the 100-foot 

contour in Arkansas County in 1998 was reduced in 2000 and 

further reduced in 2002. The area enclosed by the 100-foot contour in 1998 in neighboring Prairie and Lonoke Counties 

expanded further into Lonoke County in 2000 and 2002 but 

contracted in Prairie County by 2002.

Along the west side of Crowleys Ridge the two previously 

documented areas of depression expanded and coalesced to a 

single depression by 2002 (plate 1). In St. Francis and Lee 

Counties, a smaller cone of depression enclosed by the 130-foot 

contour, present in 1998, is not evident in 2000 or 2002. Areas 

enclosed by 140-foot contours in different areas in northern and 

east-central Monroe, northwestern Lee and western St. Francis 

Counties contracted and later expanded from 1998 to 2002. East 

of Crowleys Ridge, a cone of depression in St. Francis, Crittenden, and Cross Counties present in 1998 and 2000 continues 

to expand and deepen.

Five potentiometric depressions or troughs have been 

present since 1994 and are shaded on plate 1. Continued monitoring of the potentiometric surface will determine if these 

depressions are the result of short-term variations or long-term 

changes in the hydrologic conditions in the alluvial aquifer. 

Three potentiometric depressions were noted by Schrader 

(2001) in southeastern Arkansas—one in eastern Lincoln 

County, a second that extends from southern Desha County into 

northern Chicot County, and a third that extends from western 

Chicot County into eastern Ashley County. The trough in southern Desha and northern Chicot Counties was first evident in the 

1998 potentiometric surface (Joseph, 1999) and had expanded 

radially and vertically by 2000 (Schrader, 2001). This trough 

expanded southward by 2002 but has not appreciably deepened. 

The troughs in eastern Lincoln County and in western Chicot 

and eastern Ashley Counties were not evident in 1994 and 1998. 

The trough in eastern Lincoln County “persists” in 2002 while 

that in western Chicot and eastern Ashley Counties has become 

appreciably less deep. A potentiometric depression noted first 

in 1998 by Joseph (1999) and in 2000 by Schrader (2001) is still 

evident in Greene County and deepened by 2002. In 2002, a 

potentiometric depression present in 1994 in St. Francis County 

east of Crowleys Ridge (Stanton and others, 1998, plate 1) had 

deepened. 

Long-Term Water-Level Changes

Long-term water-level changes vary substantially across 

the study area and as shown in table 1 generally are less than 

0.30 ft/yr. Long-term water-level changes were calculated for 

143 wells in the alluvial aquifer for the period from 1977 to 

2002. Linear regression was used to calculate the trend in waterlevel change for each well for this period. The median annual 

decline in water level for all wells was 0.29 ft/yr and the median 

annual decline for each county is shown in table 1.

Table 1. Median decline in water levels in the Mississippi River 

Valley alluvial aquifer by county for the period 1977 to 2002.

County

Number

of

wells

Range of

annual

rise/decline

in water level

(feet/year)

Median

annual

rise/decline

in water

Arkansas 27 -0.66 to 0.84 -0.11

Ashley 6 -0.33 to 0.02 -0.18

Chicot 2 -0.47 to -0.07 -0.27

Clay 6 -0.51 to 0.18 -0.16

Craighead 5 -1.10 to -0.01 -0.11

Crittenden 4 -0.51 to -0.04 -0.37

Cross 5 -1.13 to -0.29 -0.99

Desha 5 -0.80 to -0.04 -0.26

Drew 2 -0.11 to -0.02 -0.06

Greene 4 -0.80 to -0.01 -0.60

Independence 1 <0.00 <0.00

Jackson 4 -0.88 to -0.25 -0.66

Jefferson 6 -0.69 to -0.07 -0.22

Lee 4 -0.62 to -0.29 -0.55

Lincoln 3 -0.37 to 0.69 -0.15

Lonoke 6 -1.35 to 0.44 -0.60

Mississippi 9 -0.11 to 0.02 -0.07

Monroe 8 -0.51 to -0.03 -0.26

Phillips 3 -0.26 to -0.07 -0.11

Poinsett 5 -1.42 to -0.03 -0.33

Prairie 10 -0.84 to 0.48 -0.18

Pulaski 1 -0.26 -0.26

Randolph 1 -0.18 -0.18

St. Francis 8 -0.91 to -0.07 -0.54

White 3 -0.33 to 0.22 -0.22

Woodruff 5 -0.51 to >0.00 -0.07

The largest median declines in water level are in Cross, 

Jackson, Greene, and Lonoke Counties. The maximum annual 

decline in Cross County was about 1 ft. The smallest median 

declines are in Mississippi, Woodruff, Drew, and Independence 

Counties. Arkansas County, where a large cone of depression is 

present, has a median annual decline of about 0.1 foot as do 

Craighead and Phillips Counties. Additionally, hydrographs for 

period of record for wells in Arkansas, Ashley, Chicot, Clay, 

Craighead, Crittenden, Cross, Desha, Drew, Greene, Independence, Jackson, Jefferson, Lee, Lincoln, Lonoke, Mississippi, 

Monroe, Phillips, Poinsett, Prairie, Pulaski, Randolph, St. Francis, White, and Woodruff Counties are presented in figure 3 

(wells A-BB, plate 1).
A. ARKANSAS COUNTY, WELL 04S03W32BCB1

DATE

1/1/55 1/1/60 1/1/65 1/1/70 1/1/75 1/1/80 1/1/85 1/1/90 1/1/95 1/1/00 1/1/05

WATER LEVEL, IN FEET ABOVE NGVD of 1929

40

60

80

100

120

140

160

B. ARKANSAS COUNTY, WELL 05S06W02DDD1

DATE

1/1/55 1/1/60 1/1/65 1/1/70 1/1/75 1/1/80 1/1/85 1/1/90 1/1/95 1/1/00 1/1/05

WATER LEVEL, IN FEET ABOVE NGVD of 1929

100

120

140

160

180

200

220

Water Levels 5

Figure 3. Water-level hydrographs for selected wells in the Mississippi River Valley alluvial aquifer in eastern Arkansas.
C. ASHLEY COUNTY, WELL 17S04W21ABA1

DATE

1/1/55 1/1/60 1/1/65 1/1/70 1/1/75 1/1/80 1/1/85 1/1/90 1/1/95 1/1/00 1/1/05

WATER LEVEL, IN FEET ABOVE NGVD of 1929

60

80

100

120

140

160

180

D. CHICOT COUNTY, WELL 17S02W10AAA1

DATE

1/1/55 1/1/60 1/1/65 1/1/70 1/1/75 1/1/80 1/1/85 1/1/90 1/1/95 1/1/00 1/1/05

WATER LEVEL, IN FEET ABOVE NGVD of 1929

40

60

80

100

120

140

160

6 Status of Water Levels and Selected Water-Quality Conditions in the Mississippi River Valley Alluvial Aquifer in Eastern 

Arkansas, 2002

Figure 3. Water-level hydrographs for selected wells in the Mississippi River Valley alluvial aquifer in eastern Arkansas.—Continued
E. CLAY COUNTY, WELL 21N05E17ABB1

DATE

1/1/55 1/1/60 1/1/65 1/1/70 1/1/75 1/1/80 1/1/85 1/1/90 1/1/95 1/1/00 1/1/05

WATER LEVEL, IN FEET ABOVE NGVD of 1929

220

240

260

280

300

320

340

F. CRAIGHEAD COUNTY, WELL 14N02E18BDD1

DATE

1/1/55 1/1/60 1/1/65 1/1/70 1/1/75 1/1/80 1/1/85 1/1/90 1/1/95 1/1/00 1/1/05

WATER LEVEL, IN FEET ABOVE NGVD of 1929

140

160

180

200

220

240

260

Water Levels 7

Figure 3. Water-level hydrographs for selected wells in the Mississippi River Valley alluvial aquifer in eastern Arkansas.—Continued
G. CRITTENDEN COUNTY, WELL 08N07E14DAA2

DATE

1/1/55 1/1/60 1/1/65 1/1/70 1/1/75 1/1/80 1/1/85 1/1/90 1/1/95 1/1/00 1/1/05

WATER LEVEL, IN FEET ABOVE NGVD of 1929

120

140

160

180

200

220

240

H. CROSS COUNTY, WELL 07N03E05ADA1

DATE

1/1/55 1/1/60 1/1/65 1/1/70 1/1/75 1/1/80 1/1/85 1/1/90 1/1/95 1/1/00 1/1/05

WATER LEVEL, IN FEET ABOVE NGVD of 1929

100

120

140

160

180

200

220

8 Status of Water Levels and Selected Water-Quality Conditions in the Mississippi River Valley Alluvial Aquifer in Eastern 

Arkansas, 2002

Figure 3. Water-level hydrographs for selected wells in the Mississippi River Valley alluvial aquifer in eastern Arkansas.—Continued
I. DESHA COUNTY, WELL 11S03W31BBA1

DATE

1/1/55 1/1/60 1/1/65 1/1/70 1/1/75 1/1/80 1/1/85 1/1/90 1/1/95 1/1/00 1/1/05

WATER LEVEL, IN FEET ABOVE NGVD of 1929

60

80

100

120

140

160

180

J. DREW COUNTY, WELL 11S05W08CCC1

DATE

1/1/55 1/1/60 1/1/65 1/1/70 1/1/75 1/1/80 1/1/85 1/1/90 1/1/95 1/1/00 1/1/05

WATER LEVEL, IN FEET ABOVE NGVD of 1929

80

100

120

140

160

180

200

Water Levels 9

Figure 3. Water-level hydrographs for selected wells in the Mississippi River Valley alluvial aquifer in eastern Arkansas.—Continued
K. GREENE COUNTY, WELL 16N06E28ABB1

DATE

1/1/55 1/1/60 1/1/65 1/1/70 1/1/75 1/1/80 1/1/85 1/1/90 1/1/95 1/1/00 1/1/05

WATER LEVEL, IN FEET ABOVE NGVD of 1929

160

180

200

220

240

260

280

L. INDEPENDENCE COUNTY, WELL 12N04W34CBB1

DATE

1/1/55 1/1/60 1/1/65 1/1/70 1/1/75 1/1/80 1/1/85 1/1/90 1/1/95 1/1/00 1/1/05

WATER LEVEL, IN FEET ABOVE NGVD of 1929

140

160

180

200

220

240

260

10 Status of Water Levels and Selected Water-Quality Conditions in the Mississippi River Valley Alluvial Aquifer in Eastern 

Arkansas, 2002

Figure 3. Water-level hydrographs for selected wells in the Mississippi River Valley alluvial aquifer in eastern Arkansas.—Continued
M. JACKSON COUNTY, WELL 12N02W25ABB2

DATE

1/1/55 1/1/60 1/1/65 1/1/70 1/1/75 1/1/80 1/1/85 1/1/90 1/1/95 1/1/00 1/1/05

WATER LEVEL, IN FEET ABOVE NGVD of 1929

160

180

200

220

240

260

280

N. JEFFERSON COUNTY, WELL 06S05W15BCA1

DATE

1/1/55 1/1/60 1/1/65 1/1/70 1/1/75 1/1/80 1/1/85 1/1/90 1/1/95 1/1/00 1/1/05

WATER LEVEL, IN FEET ABOVE NGVD of 1929

100

120

140

160

180

200

220

Water Levels 11

Figure 3. Water-level hydrographs for selected wells in the Mississippi River Valley alluvial aquifer in eastern Arkansas.—Continued
O. LEE COUNTY, WELL 01N03E02BBC1

DATE

1/1/55 1/1/60 1/1/65 1/1/70 1/1/75 1/1/80 1/1/85 1/1/90 1/1/95 1/1/00 1/1/05

WATER LEVEL, IN FEET ABOVE NGVD of 1929

140

160

180

200

220

240

260

P. LINCOLN COUNTY, WELL 09S05W17BCB1

DATE

1/1/55 1/1/60 1/1/65 1/1/70 1/1/75 1/1/80 1/1/85 1/1/90 1/1/95 1/1/00 1/1/05

WATER LEVEL, IN FEET ABOVE NGVD of 1929

80

100

120

140

160

180

200

12 Status of Water Levels and Selected Water-Quality Conditions in the Mississippi River Valley Alluvial Aquifer in Eastern 

Arkansas, 2002

Figure 3. Water-level hydrographs for selected wells in the Mississippi River Valley alluvial aquifer in eastern Arkansas.—Continued
Q. LONOKE COUNTY, WELL 01S10W01ACB1

DATE

1/1/55 1/1/60 1/1/65 1/1/70 1/1/75 1/1/80 1/1/85 1/1/90 1/1/95 1/1/00 1/1/05

WATER LEVEL, IN FEET ABOVE NGVD of 1929

140

160

180

200

220

240

260

R. MISSISSIPPI COUNTY, WELL 12N08E08BCB1

DATE

1/1/55 1/1/60 1/1/65 1/1/70 1/1/75 1/1/80 1/1/85 1/1/90 1/1/95 1/1/00 1/1/05

WATER LEVEL, IN FEET ABOVE NGVD of 1929

160

180

200

220

240

260

280

Water Levels 13

Figure 3. Water-level hydrographs for selected wells in the Mississippi River Valley alluvial aquifer in eastern Arkansas.—Continued
S. MONROE COUNTY, WELL 03N01W20ABA1

DATE

1/1/55 1/1/60 1/1/65 1/1/70 1/1/75 1/1/80 1/1/85 1/1/90 1/1/95 1/1/00 1/1/05

WATER LEVEL, IN FEET ABOVE NGVD of 1929

80

100

120

140

160

180

200

T. PHILLIPS COUNTY, WELL 05S02E18BDA1

DATE

1/1/55 1/1/60 1/1/65 1/1/70 1/1/75 1/1/80 1/1/85 1/1/90 1/1/95 1/1/00 1/1/05

WATER LEVEL, IN FEET ABOVE NGVD of 1929

80

100

120

140

160

180

200

14 Status of Water Levels and Selected Water-Quality Conditions in the Mississippi River Valley Alluvial Aquifer in Eastern 

Arkansas, 2002

Figure 3. Water-level hydrographs for selected wells in the Mississippi River Valley alluvial aquifer in eastern Arkansas.—Continued
U. POINSETT COUNTY, WELL 11N02E26AAB1

DATE

1/1/55 1/1/60 1/1/65 1/1/70 1/1/75 1/1/80 1/1/85 1/1/90 1/1/95 1/1/00 1/1/05

WATER LEVEL, IN FEET ABOVE NGVD of 1929

100

120

140

160

180

200

220

V. PRAIRIE COUNTY, WELL 01S05W14BBC1

DATE

1/1/55 1/1/60 1/1/65 1/1/70 1/1/75 1/1/80 1/1/85 1/1/90 1/1/95 1/1/00 1/1/05

WATER LEVEL, IN FEET ABOVE NGVD of 1929

40

60

80

100

120

140

160

Water Levels 15

Figure 3. Water-level hydrographs for selected wells in the Mississippi River Valley alluvial aquifer in eastern Arkansas.—Continued
W. PRAIRIE COUNTY, WELL 03N06W01BCB1

DATE

1/1/55 1/1/60 1/1/65 1/1/70 1/1/75 1/1/80 1/1/85 1/1/90 1/1/95 1/1/00 1/1/05

WATER LEVEL, IN FEET ABOVE NGVD of 1929

100

120

140

160

180

200

220

X. PULASKI COUNTY, WELL 02S10W16CCA1

DATE

1/1/55 1/1/60 1/1/65 1/1/70 1/1/75 1/1/80 1/1/85 1/1/90 1/1/95 1/1/00 1/1/05

WATER LEVEL, IN FEET ABOVE NGVD of 1929

140

160

180

200

220

240

260

16 Status of Water Levels and Selected Water-Quality Conditions in the Mississippi River Valley Alluvial Aquifer in Eastern 

Arkansas, 2002

Figure 3. Water-level hydrographs for selected wells in the Mississippi River Valley alluvial aquifer in eastern Arkansas.—Continued
Y. RANDOLPH COUNTY, WELL 18N01E34AAC1

DATE

1/1/55 1/1/60 1/1/65 1/1/70 1/1/75 1/1/80 1/1/85 1/1/90 1/1/95 1/1/00 1/1/05

WATER LEVEL, IN FEET ABOVE NGVD of 1929

200

220

240

260

280

300

320

Z. ST. FRANCIS COUNTY, WELL 04N01W28CDD1

DATE

1/1/55 1/1/60 1/1/65 1/1/70 1/1/75 1/1/80 1/1/85 1/1/90 1/1/95 1/1/00 1/1/05

WATER LEVEL, IN FEET ABOVE NGVD of 1929

80

100

120

140

160

180

200

Water Levels 17

Figure 3. Water-level hydrographs for selected wells in the Mississippi River Valley alluvial aquifer in eastern Arkansas.—Continued
AA. WHITE COUNTY, WELL 05N07W09AAA1

DATE

1/1/55 1/1/60 1/1/65 1/1/70 1/1/75 1/1/80 1/1/85 1/1/90 1/1/95 1/1/00 1/1/05

WATER LEVEL, IN FEET ABOVE NGVD of 1929

120

140

160

180

200

220

240

BB. WOODRUFF COUNTY, WELL 08N03W31AAD1

DATE

1/1/55 1/1/60 1/1/65 1/1/70 1/1/75 1/1/80 1/1/85 1/1/90 1/1/95 1/1/00 1/1/05

WATER LEVEL, IN FEET ABOVE NGVD of 1929

120

140

160

180

200

220

240

18 Status of Water Levels and Selected Water-Quality Conditions in the Mississippi River Valley Alluvial Aquifer in Eastern 

Arkansas, 2002

Figure 3. Water-level hydrographs for selected wells in the Mississippi River Valley alluvial aquifer in eastern Arkansas.—Continued
Specific Conductance 19

The analysis of long-term water-level changes (1977-

2002) in the cone of depression in Arkansas and Prairie Counties shows the effects of the elongation of this cone of depression. Both Arkansas and Prairie Counties have two different 

average rates of decline for the two hydrographs shown for each 

county. In Arkansas County, well 04S03W32BCB1 (fig. 3A) 

has an annual decline since 1977 of about 0.7 ft/yr. Well A is 

located near the center of the cone of depression in Arkansas 

County and generally shows a decline during the 47-year period 

of record. Well B is located near the Arkansas River and shows 

a stable water level for the 44-year period of record. The water 

level in the Arkansas River is maintained by a lock and dam system and can be a source of water for the alluvial aquifer in 

southern and western Arkansas County. In Prairie County, well 

01S05W14BBC1 (fig. 3V) is near the center of the cone of 

depression and has an average rate of decline of about 0.4 ft/yr. 

Well 03N06W01BCB1 (fig. 3W) is located in the north part of 

the cone of depression and has an annual decline since 1977 of 

about 0.8 ft/yr. These two hydrographs show that the rate of 

decline is about two times greater in the north part of the cone 

of depression than in the center and supports the potentiometricsurface evidence that this cone of depression is expanding.

Water-level changes in neighboring counties show the 

expansion of the cone of depression centered in Arkansas, 

Lonoke, and Prairie Counties. In Lonoke County, well 

01S10W01ACB1 (fig. 3Q) has an annual decline of 0.5 ft/yr 

over 25 years since 1977 and shows a near continuous decline 

in water level during the 44 years of record. In Jefferson 

County, well 06S05W15BCA1 (fig. 3N) has an annual decline 

of 0.2 ft/yr during the period 1977 to 2002.

Comparison of Water-Level Changes from 1998 to 2002

The water-level difference map (plate 2) shows the difference in water level in the alluvial aquifer from spring 1998 to 

spring 2002. Water-level surfaces for 1998 and 2002 were produced by integrating all the points along the water-level contour 

lines for those years along with points representing the individual water levels from the respective year from those wells that 

were measured in both years into a continuous mesh of irregular 

triangles. These two water-level surfaces were interpolated 

from the triangular meshes into regular grids with 30-meter cell 

widths. The corresponding cell in the 1998 grid was subtracted 

from the 2002 cell producing the water-level difference map 

shown in plate 2. These calculated water-level differences then 

were altered locally to reflect realistic water-level changes.

Water levels generally rose in the large cones of depression found in Arkansas and Prairie Counties between 1998 and 

2002 but declined in the cone of depression in Lonoke County. 

Water levels generally declined in most of the aquifer, particularly south of the cone of depression in Lonoke, Prairie, and 

Arkansas Counties and along Crowleys Ridge in Craighead, 

Poinsett, Cross, St. Francis, and Lee Counties.

Water-level changes show the expansion of the cones of 

depression in Lee, Monroe, St. Francis, and Woodruff Counties, 

and in Craighead, Cross, and Poinsett Counties. In Monroe 

County, data for well 03N01W20ABA1 (fig. 3S) show that 

water levels have an annual decline of 0.5 ft/yr since 1977. 

Water levels in well 01N03E02BBC1 (fig. 3O) in Lee County 

have an annual decline of 0.5 ft/yr since 1977. Water levels at 

well 14N02E18BDD1 (fig. 3F) in Craighead County has an 

annual decline of 1.0 ft/yr and water levels at well 

07NO3E05ADA1 (fig. 3H) in Cross County has an annual 

decline of 1.0 ft/yr since 1977. In Poinsett County, data for well 

11N02E26AAB1 (fig. 3U) show that water levels have an 

annual decline of 1.4 ft/yr since 1977. The cone of depression is 

expanding northward and southward along Crowleys Ridge and 

westward toward Jackson County. In Jackson County, water 

levels in well 12N02W25ABB2 (fig. 3M) has an annual decline 

of 0.7 ft/yr and water levels from well 08N03W31AAD1 (fig. 

3BB) in Woodruff County has an annual decline of 1.0 ft/yr 

since 1977.

Specific Conductance

Water samples were collected from 64 wells screened in 

the alluvial aquifer and measured on site for specific conductance and temperature (appendix 2). Specific conductance 

ranged from 262 microsiemens per centimeter at 25 degrees 

Celsius (μS/cm) at a well in Randolph County to 2,730 μS/cm 

at a well in Chicot County (appendix 2). Two areas of relatively 

high specific conductance (greater than 1,200 μS/cm) occur in 

eastern Lincoln and western Chicot Counties. Other values in 

Chicot County are as low as 438 μS/cm. Values of specific conductance less than 300 μS/cm are found in Woodruff, Jackson, 

and Clay Counties and values larger than 800 μS/cm are found 

in Craighead, Chicot, St. Francis, and Arkansas Counties. 

Generally, the occurrences of higher specific conductance 

in the alluvial aquifer probably are caused by movement of 

water containing elevated concentrations of dissolved solids 

from sources at depth (Bryant and others, 1985). Water with 

higher concentrations of dissolved solids may have moved 

upward where the confining units are thin or absent, along 

faults, or through unplugged or deteriorated casings of abandoned oil and gas test wells (Fitzpatrick, 1985). Morris and 

Bush (1986) cite two possible sources of high dissolved-solids 

concentration water—a zone of ground-water stagnation 

present in the alluvial aquifer caused by localized restricted horizontal or vertical flow, and upward movement of water with 

higher dissolved-solids concentration from deeper formations 

in response to pumping.

Summary

The Mississippi River Valley alluvial aquifer is increasingly relied upon for agriculture and aquaculture in eastern 

Arkansas. In 1995, estimated withdrawals from the alluvial 
20 Status of Water Levels and Selected Water-Quality Conditions in the Mississippi River Valley Alluvial Aquifer in Eastern

Arkansas, 2002

aquifer in Arkansas totaled about 5,062 Mgal/d; in 2000, withdrawals had increased about 39 percent to about 7,050 Mgal/d.

The regional direction of ground-water flow is generally to 

the south and east except where affected by intense groundwater withdrawals. In spring of 2002, the highest water-level 

altitude measured was 287 feet above NGVD of 1929 in northeastern Clay County. The lowest water-level altitude measured 

was 78 feet above NGVD of 1929 in southwestern Ashley 

County. Comparisons of water-level changes in cones of 

depression from 1998 to 2002 show both increases and 

decreases in depth and areal extent. A large cone of depression 

in the potentiometric surface is located in Arkansas, Lonoke, 

and Prairie Counties. This cone of depression generally has 

deepened from 1998 to 2002 in Lonoke County but has become 

more shallow in Arkansas County. Two shallower depressions 

west of Crowleys Ridge located in Craighead, Cross, and Poinsett Counties and in St. Francis, Woodruff, Lee, and Monroe 

Counties have coalesced into a single depression between 1998 

and 2002. Water levels generally declined throughout most of 

the aquifer from 1998 to 2002.

Water-level data from 143 wells with 26 or more years of 

record indicate long-term water levels in the alluvial aquifer 

declined a median of 0.29 ft/yr for the period covering 1977 to 

2002. The maximum annual water-level decline was about 1 ft 

in Cross County but Arkansas County, with its large cone of 

depression, shows an annual median decline of only about 0.1 

ft as do Craighead and Phillips Counties.

Specific conductance measurements made on water samples collected from 64 wells during the summer of 2002 ranged 

from 262 μS/cm at a well in Randolph County to 2,730 μS/cm 

at a well in Chicot County. Two areas of relatively high specific 

conductance (greater than 1,200 μS/cm) occur in eastern Lincoln and western Chicot Counties.

References

Ackerman, D.J., 1996, Hydrology of the Mississippi River 

Valley alluvial aquifer, south-central United States—A preliminary assessment of the regional flow system: U.S. Geological Survey Professional Paper 1416-D, 56 p.

Boswell, E.H., Cushing, E.M., and Hosman, R.L., 1968, Quaternary aquifers in the Mississippi Embayment with a discussion of Quality of the water by H.G. Jeffery: U.S. Geological 

Survey Open Professional Paper 448-E, 15 p.

Broom, M.E. and Reed, J.E., 1973, Hydrology of the Bayou 

Bartholomew alluvial aquifer-stream system, Arkansas: U.S. 

Geological Survey Open-File Report 73-34, 91 p.

Bryant, C.T., Ludwig, A.H., and Morris, E.E., 1985, Ground 

water problems in Arkansas: U.S. Geological Survey WaterResources Investigations Report 85-4010, 24 p.

Fenneman, N.M., 1938, Physiography of eastern United States; 

New York, McGraw-Hill Book Co. Inc., 689 p.

Freiwald, D.A., 1984, Average annual precipitation and runoff 

for Arkansas, 1951-80: U.S. Geological Survey WaterResources Investigations Report 84-4363, 1 sheet.

Fitzpatrick, D.J., 1985, Occurrence of saltwater in the alluvial 

aquifer in the Boeuf-Tensas Basin, Arkansas: U.S. Geological Survey Water-Resources Investigation Report 85-4029, 1 

sheet.

Gonthier, G.J., and Mahon, G.L., 1993, Thickness of the Mississippi River Valley confining unit, eastern Arkansas: U.S. 

Geological Survey Water-Resources Investigation Report 

92-4121, 4 sheets.

Holland, T.W., 1999, Water use in Arkansas, 1995: U.S. Geological Survey Open-File Report 99-188, 1 sheet.

Holland, T.W., 1993, Use of water in Arkansas, 1990: U.S. 

Geological Survey Open-File Report 93-48, pamphlet.

Holland, T.W., 1987, Use of water in Arkansas, 1985: Arkansas 

Geological Commission Water Resources Summary Number 

14, 30 p.

Joseph, R.L., 1999, Status of water levels and selected waterquality conditions in the Mississippi River Valley alluvial 

aquifer in eastern Arkansas, 1998: U.S. Geological Survey 

Water-Resources Investigations Report 99-4035, 54 p.

Mahon, G.L., and Poynter, D.T., 1993, Development, calibration, and testing of ground-water flow models for the Mississippi River Valley alluvial aquifer in eastern Arkansas using 

one-square mile cells: U.S. Geological Survey WaterResources Investigations Report 92-4106, 33 p.

Morris, E.E., and Bush, W.V., 1986, Extent and source of saltwater intrusion into the alluvial aquifer near Brinkley, Arkansas, 1984: U.S. Geological Survey Water-Resources Investigations Report 85-4322, 123 p.

Pugh, A.L., Westerfield, P.W., and Poynter, D.T., 1997, Thickness of the Mississippi River Valley alluvial aquifer in eastern Arkansas: U.S. Geological Survey Water-Resources 

Investigations Report 97-4049, 1 sheet.

Schrader, T.P., 2001, Status of water levels and selected waterquality conditions in the Mississippi River Valley alluvial 

aquifer in eastern Arkansas, 2000: U.S. Geological Survey 

Water-Resources Investigations Report 01-4124, 52 p.

Stanton, G.P., Joseph, R.L., and Pugh, A.L., 1998, Status of 

water levels and selected water-quality conditions in the Mississippi River Valley alluvial aquifer in eastern Arkansas, 

1994-1996: U.S. Geological Survey Water-Resources Investigations Report 98-4131, 72 p.
APPENDIXES
 
Appendix 23

Appendix 1. Information pertaining to water levels measured in wells completed in the Mississippi River Valley alluvial aquifer in eastern

Arkansas, spring 2002.

[USGS, U.S. Geological Survey; NRCS, Natural Resources Conservation Service; --, no data; NGVD of 1929; National Geodetic Vertical Datum of 1929;

Horizontal coordinate information is referenced to the North American Datum of 1983 (NAD 83)]

Local well number

Latitude

(degrees,

minutes,

seconds)

Longitude

(degrees,

minutes,

seconds)

Source

of data

Depth of

well

(feet)

Land-surface

datum altitude

(feet above

NGVD of

1929)

Depth to

water

(feet below

land-surface

datum

Waterlevel

altitude

(feet above

NGVD of

1929)

Date of

measurement

Arkansas County

02S04W11DBB1 343233 912415 USGS 152 213 100.48 113 3/7/2002

02S05W15AAB1 343213 913127 USGS 180 213 110.72 102 4/2/2002

02S05W31BBB1 342937 913536 USGS 90 198 60.62 137 4/2/2002

03S02W27ABB1 342448 911251 USGS 87 197 69.80 127 3/7/2002

03S03W05CCD1 342737 912132 USGS 150 201 96.54 104 4/2/2002

03S03W27BBC1 342455 911944 USGS 120 195 90.00 105 4/2/2002

03S04W02BBB1 342831 912454 USGS 116 198 91.30 106 4/2/2002

03S04W03DCA16 342753 912515 USGS 126 205 99.10 106 3/6/2002

03S05W03CCC1 342752 913227 USGS 110 215 105.66 109 4/2/2002

03S06W35ADD1 342411 913652 USGS -- 190 53.29 137 3/7/2002

04S01W04ACD2 342233 910733 USGS 52 155 6.48 149 3/7/2002

04S01W19AAD1 342012 910919 USGS 157 196 66.25 130 3/6/2002

04S01W31DCB1 341753 910949 USGS 130 179 54.40 125 3/6/2002

04S02W11AAA1 342209 911123 USGS -- 195 67.37 128 3/7/2002

04S02W29CCC1 341846 911539 USGS 140 191 83.66 107 3/6/2002

04S03W17ADD1 342102 912058 USGS -- 200 106.18 94 3/6/2002

04S03W32BCB1 341820 912202 USGS -- 192 106.18 86 3/6/2002

04S04W02ABB1 342313 912424 USGS 155 200 108.07 92 3/6/2002

04S04W35ABC1 341835 912437 NRCS -- 193 107.00 86 4/22/2002

04S05W16CDC1 342045 913321 USGS 120 201 71.10 130 3/7/2002

04S05W24DAA1 342001 912930 USGS 150 198 90.43 108 3/7/2002

04S06W15DBB1 342122 913827 USGS 100 190 31.24 159 3/7/2002

05S01W16BAB1 341552 910729 USGS -- 183 48.84 134 3/6/2002

05S02W16ABD1 341552 911358 USGS 154 190 73.91 116 3/6/2002

05S04W07CCC1 341555 912932 USGS 120 194 76.51 117 3/7/2002

05S04W32BBA1 341316 912822 USGS -- 191 59.36 132 3/7/2002

05S06W02DDD1 341724 913651 USGS 60 183 20.12 163 3/7/2002
24 Status of Water Levels and Selected Water-Quality Conditions in the Mississippi River Valley Alluvial Aquifer in Eastern 

Arkansas, 2002

05S06W07DDC1 341642 914130 USGS 32 180 9.36 171 3/7/2002

06S02W23DCD1 340853 911206 USGS -- 188 73.54 114 3/6/2002

06S03W10BBA1 341136 911954 USGS 155 184 83.12 101 3/6/2002

06S03W27AAA1 340858 911913 USGS 132 183 67.69 115 3/6/2002

06S04W18CBB1 341019 912949 USGS 150 190 39.52 151 3/7/2002

07S02W04BBB1 340707 911452 USGS -- 176 31.12 145 3/6/2002

07S02W17BBA1 340707 911452 USGS 95 184 55.04 129 3/6/2002

07S03W18CCD1 340435 912316 USGS -- 186 43.37 143 3/6/2002

07S03W32BBC1 340240 912216 USGS 128 177 25.96 151 3/6/2002

07S04W01DDD1 340625 912327 USGS 155 186 47.41 139 3/6/2002

08S02W08ACA1 340041 911506 USGS -- 179 43.02 136 3/6/2002

08S03WT2299 340147 912203 USGS 158 178 25.47 153 3/6/2002

Ashley County

15S04W26DCC1 332232 912902 USGS 64 127 30.68 96 2/26/2002

16S06W08CAA1 331941 914438 USGS 105 185 75.53 109 2/26/2002

16S06W27BAB1 331729 914240 USGS 115 182 81.66 100 4/30/2002

17S04W03ABB1 331528 913010 USGS 105 124 27.02 97 4/30/2002

17S04W15DDC1 331252 912954 USGS 57 116 24.22 92 2/26/2002

17S04W21ABA1 331252 913108 USGS -- 117 19.21 98 4/30/2002

17S06W01ADD1 331518 913956 USGS 144 182 81.25 101 2/26/2002

17S06W35CAC1 331049 914136 USGS 140 179 77.03 102 4/30/2002

17S07W05CDD1 331502 915050 USGS 130 185 91.49 94 2/26/2002

18S04W23DDD1 330658 912856 NRCS 100 103 21.00 82 4/29/2002

18S05W11CCD1 330841 913538 NRCS 75 118 20.00 98 4/29/2002

18S05W22DDA1 330712 913555 NRCS 100 125 16.00 109 4/29/2002

18S08W01AAB1 331015 915225 USGS 128 181 86.18 95 2/26/2002

18S08W28DDD2 330625 915528 USGS 156 163 85.63 78 2/13/2002

19S04W06BAB2 330504 913329 USGS 98 110 22.23 88 2/26/2002

Appendix 1. Information pertaining to water levels measured in wells completed in the Mississippi River Valley alluvial aquifer in eastern

Arkansas, spring 2002.—Continued

[USGS, U.S. Geological Survey; NRCS, Natural Resources Conservation Service; --, no data; NGVD of 1929; National Geodetic Vertical Datum of 1929;

Horizontal coordinate information is referenced to the North American Datum of 1983 (NAD 83)]

Local well number

Latitude

(degrees,

minutes,

seconds)

Longitude

(degrees,

minutes,

seconds)

Source

of data

Depth of

well

(feet)

Land-surface

datum altitude

(feet above

NGVD of

1929)

Depth to

water

(feet below

land-surface

datum

Waterlevel

altitude

(feet above

NGVD of

1929)

Date of

measurement
Appendix 25

19S04W14BBB1 330310 912913 NRCS 100 107 25.00 82 4/29/2002

19S05W08ACA1 330405 913815 NRCS -- 111 13.00 98 4/29/2002

19S05W16ABB1 330323 913718 NRCS 100 116 19.00 97 4/29/2002

19S05W22DCD1 330139 913615 NRCS -- 107 18.00 89 4/29/2002

19S06W07BCC1 330404 914608 USGS -- 135 31.43 103 2/26/2002

Chicot County

13S03W27AAA1 333253 912310 NRCS -- 138 46.00 92 3/21/2002

13S03W34BAA1 333110 912539 USGS 100 133 37.82 95 2/25/2002

13S03W34CAA1 333136 912336 USGS 75 132 34.91 97 2/25/2002

13S03W35BAC1 333154 912246 USGS 90 134 35.71 98 2/25/2002

14S02W09BDD1 332859 911729 NRCS -- 133 28.00 105 3/27/2002

14S02W18BBDD1 332859 912038 NRCS -- 129 29.00 100 3/27/2002

14S03W07BBD1 333011 912620 USGS 77 134 24.19 110 2/25/2002

14S03W32CDB2 332613 912551 USGS 90 134 34.69 99 2/25/2002

15S02W20DDC1 332227 911920 USGS 70 126 28.02 98 2/25/2002

15S02W20DDC1 332227 911920 NRCS 70 126 29.00 97 3/21/2002

15S04W13DAD1 332338 912730 NRCS -- 131 36.00 95 3/21/2002

16S03W11ADC1 331920 912234 USGS -- 118 27.34 91 2/26/2002

17S01E17CDA1 331259 910716 USGS 110 118 25.83 92 2/26/2002

17S01E18ADA1 331326 910758 USGS -- 121 17.03 104 2/26/2002

17S01W06BCC1 331501 911505 USGS 100 115 21.79 93 2/25/2002

17S02W10AAA1 331429 911712 USGS 90 114 26.20 88 4/30/2002

17S03W18CBC1 331257 912736 NRCS -- 117 33.00 84 3/21/2002

17S03W28DBA1 331127 912441 USGS 95 110 23.26 87 2/25/2002

18S01W19DAB1 330709 911423 USGS -- 110 13.35 97 2/25/2002

18S01W33BAD1 330543 911245 NRCS -- 116 12.00 104 3/28/2002

18S03W22ABA2 330728 912341 USGS 86 103 11.43 92 4/30/2002

19S01W17BCC1 330250 911406 USGS 120 106 18.62 87 2/25/2002

Appendix 1. Information pertaining to water levels measured in wells completed in the Mississippi River Valley alluvial aquifer in eastern

Arkansas, spring 2002.—Continued

[USGS, U.S. Geological Survey; NRCS, Natural Resources Conservation Service; --, no data; NGVD of 1929; National Geodetic Vertical Datum of 1929;

Horizontal coordinate information is referenced to the North American Datum of 1983 (NAD 83)]

Local well number

Latitude

(degrees,

minutes,

seconds)

Longitude

(degrees,

minutes,

seconds)

Source

of data

Depth of

well

(feet)

Land-surface

datum altitude

(feet above

NGVD of

1929)

Depth to

water

(feet below

land-surface

datum

Waterlevel

altitude

(feet above

NGVD of

1929)

Date of

measurement
26 Status of Water Levels and Selected Water-Quality Conditions in the Mississippi River Valley Alluvial Aquifer in Eastern 

Arkansas, 2002

19S03W14ABB1 330304 912251 USGS 95 111 22.10 89 2/25/2002

Clay County

18N08E03DAB1 361323 901153 USGS 105 257 4.68 252 3/27/2002

18N08E11BAA1 361253 901117 NRCS 100 259 7.70 251 4/15/2002

19N03E24AAA1 361655 904157 USGS -- 278 19.22 259 3/27/2002

19N04E11DAA1 361805 903621 NRCS -- 280 22.60 257 4/15/2002

19N04E19AAA1 361654 904050 USGS -- 282 29.85 252 3/27/2002

19N04E19BAA1 361649 904125 NRCS 100 279 21.90 257 4/15/2002

19N05E15BBD1 361716 903152 NRCS 110 289 31.70 257 4/15/2002

19N06E18DBC1 361642 902815 NRCS -- 297 34.00 263 4/15/2002

19N07E25BCB1 361519 901700 NRCS -- 268 14.40 254 4/15/2002

19N08E02ABB1 361859 901104 USGS -- 269 2.85 266 3/27/2002

19N08E08DCA1 361729 901402 NRCS -- 270 26.30 244 4/15/2002

19N09E19CDC1 361539 900908 NRCS -- 265 5.80 259 4/15/2002

20N03E25BAA1 362112 904225 NRCS 100 288 23.30 265 4/15/2002

20N04E03ADA1 362425 903725 NRCS -- 290 18.20 272 4/15/2002

20N04E06BB1 362444 904131 USGS 110 290 19.75 270 3/27/2002

20N05E22CAD1 362118 903132 NRCS -- 290 26.70 263 4/15/2002

20N05E30CAC1 362003 903454 NRCS -- 283 16.10 267 4/15/2002

20N05E34DBA1 361939 903117 USGS 110 285 27.25 258 3/27/2002

20N06E09BBA1 362327 902620 NRCS -- 290 19.80 270 4/15/2002

20N06E28CCD1 362005 902630 NRCS -- 290 26.50 264 4/15/2002

20N08E22BDC1 362111 901220 NRCS -- 275 6.50 269 4/15/2002

20N09E09ABC1 362306 900642 NRCS -- 279 4.00 275 4/15/2002

20N09E33DDC1 361904 900628 NRCS -- 270 5.50 265 4/15/2002

21N03E15CBC1 362738 904453 USGS 90 292 8.90 283 4/15/2002

21N03E36CDD1 362450 904214 NRCS -- 290 19.30 271 4/15/2002

21N04E09DBC1 362828 903853 NRCS -- 291 10.10 281 4/15/2002

Appendix 1. Information pertaining to water levels measured in wells completed in the Mississippi River Valley alluvial aquifer in eastern

Arkansas, spring 2002.—Continued

[USGS, U.S. Geological Survey; NRCS, Natural Resources Conservation Service; --, no data; NGVD of 1929; National Geodetic Vertical Datum of 1929;

Horizontal coordinate information is referenced to the North American Datum of 1983 (NAD 83)]

Local well number

Latitude

(degrees,

minutes,

seconds)

Longitude

(degrees,

minutes,

seconds)

Source

of data

Depth of

well

(feet)

Land-surface

datum altitude

(feet above

NGVD of

1929)

Depth to

water

(feet below

land-surface

datum

Waterlevel

altitude

(feet above

NGVD of

1929)

Date of

measurement
Appendix 27

21N05E17ABB1 362755 903329 USGS 105 298 23.55 274 3/27/2002

21N05E22BAB1 362704 903132 NRCS 105 288 6.10 282 4/15/2002

21N06E11BBB1 362839 902421 NRCS 100 296 14.50 282 4/15/2002

21N06E28BB1 362605 902608 USGS 130 293 19.05 273 3/27/2002

21N07E01DDC1 362835 901607 NRCS 90 303 21.50 282 4/15/2002

21N07E19BDA1 362640 902148 NRCS -- 295 20.00 275 4/15/2002

21N08E18CCC1 362651 901550 USGS 110 324 37.45 287 3/27/2002

21N08E36ABB1 362502 900958 USGS 90 283 1.00 282 5/2/2002

21N09E31BDA1 362447 900851 NRCS 100 284 2.00 282 4/15/2002

Craighead County

13N01E03AAA1 354739 905753 NRCS 135 240 55.20 185 4/3/2002

13N01E21CAB 354434 905945 NRCS 120 240 60.00 180 4/3/2002

13N01E23CAB1 354430 905736 NRCS 118 245 66.00 179 4/3/2002

13N01E23DAA1 354435 905652 USGS 118 242 68.84 173 3/26/2002

13N02E02AAB1 354731 905032 NRCS 130 251 82.40 169 4/3/2002

13N02E03AAA1 354733 905129 NRCS 105 250 84.40 166 4/3/2002

13N02E15BBD2 354540 905220 NRCS 120 245 107.00 138 4/3/2002

13N03E10BDB1 354625 904546 NRCS 150 265 82.00 183 4/3/2002

13N03E23CDA1 354419 904434 NRCS 135 249 78.30 171 4/3/2002

13N03E28CDB1 354322 904652 NRCS 121 250 102.50 148 4/3/2002

13N03E29AAA1 354403 904713 USGS 122 251 101.45 150 3/26/2002

13N03E35AAA1 354308 904401 NRCS 150 249 89.00 160 4/3/2002

13N04E12ABB1 354635 903656 USGS 110 231 25.48 206 3/26/2002

13N04E15DBA1 354521 903857 NRCS 130 230 27.70 202 3/28/2002

13N04E26BCC1 354340 903829 NRCS 100 225 29.00 196 3/28/2002

13N05E02CCC1 354648 903202 NRCS 120 230 13.00 217 3/25/2002

13N05E06DCC1 354637 903547 NRCS 110 229 20.90 208 3/25/2002

13N05E22BAD1 354449 903243 USGS -- 226 13.58 212 3/26/2002

Appendix 1. Information pertaining to water levels measured in wells completed in the Mississippi River Valley alluvial aquifer in eastern

Arkansas, spring 2002.—Continued

[USGS, U.S. Geological Survey; NRCS, Natural Resources Conservation Service; --, no data; NGVD of 1929; National Geodetic Vertical Datum of 1929;

Horizontal coordinate information is referenced to the North American Datum of 1983 (NAD 83)]

Local well number

Latitude

(degrees,

minutes,

seconds)

Longitude

(degrees,

minutes,

seconds)

Source

of data

Depth of

well

(feet)

Land-surface

datum altitude

(feet above

NGVD of

1929)

Depth to

water

(feet below

land-surface

datum

Waterlevel

altitude

(feet above

NGVD of

1929)

Date of

measurement
28 Status of Water Levels and Selected Water-Quality Conditions in the Mississippi River Valley Alluvial Aquifer in Eastern 

Arkansas, 2002

13N05E24BAC1 354451 903045 NRCS 120 225 7.80 217 3/25/2002

13N06E03ACB1 354711 902610 NRCS 105 221 7.80 213 3/25/2002

13N07E02CAB1 354642 901901 NRCS 120 226 4.00 222 3/28/2002

13N07E05ABB1 354716 902158 NRCS 100 225 6.50 219 3/28/2002

13N07E20BBA1 354440 902216 USGS 22 223 1.95 221 3/26/2002

13N07E23BCD1 354419 901909 NRCS 120 225 5.90 219 3/28/2002

13N07E35BCD1 354233 901837 NRCS 120 221 7.80 213 3/28/2002

14N01E03ACB1 355246 905816 NRCS 96 249 49.80 199 4/1/2002

14N01E10BAB1 355204 905828 NRCS 96 246 48.00 198 4/1/2002

14N01E31DCA1 354817 910121 NRCS 126 251 56.50 195 4/1/2002

14N02E18BDD1 355041 905419 USGS 120 242 53.98 188 3/26/2002

14N02E22AAA1 355007 905129 NRCS 132 255 71.40 184 4/1/2002

14N05E25ABB1 354921 903025 USGS -- 238 19.53 218 3/26/2002

14N06E06BAA1 355234 902934 NRCS 120 240 22.50 218 3/25/2002

14N06E20CCD1 354922 902850 USGS 150 226 5.88 220 3/26/2002

14N06E27AAB1 354911 902559 USGS 30 226 0.65 225 3/26/2002

14N07E07BCB1 355124 902323 NRCS 98 230 5.00 225 3/29/2002

14N07E14DDC1 354956 901831 NRCS 120 230 5.50 225 3/28/2002

14N07E26DBB1 354834 901843 USGS 100 228 3.10 225 3/26/2002

14N07W26DCA1 354820 901836 USGS -- 230 14.02 216 3/26/2002

15N02E01BCA1 355748 904955 NRCS 100 254 31.30 223 4/3/2002

15N02E12DCB1 355626 904930 NRCS 120 250 30.20 220 4/3/2002

15N03E19ADA1 355502 904802 USGS 116 262 43.43 219 3/26/2002

15N05E22BAB1 355513 903241 NRCS 197 260 35.80 224 3/25/2002

15N06E04BAD1 355744 902706 NRCS 104 239 14.60 224 3/25/2002

15N06E20DDD1 355426 902739 USGS -- 234 9.28 225 3/26/2002

15N07E10DAB1 355622 901934 NRCS 106 235 6.00 229 3/28/2002

15N07E10DBA1 355628 901944 USGS 120 236 6.00 230 3/26/2002

Appendix 1. Information pertaining to water levels measured in wells completed in the Mississippi River Valley alluvial aquifer in eastern

Arkansas, spring 2002.—Continued

[USGS, U.S. Geological Survey; NRCS, Natural Resources Conservation Service; --, no data; NGVD of 1929; National Geodetic Vertical Datum of 1929;

Horizontal coordinate information is referenced to the North American Datum of 1983 (NAD 83)]

Local well number

Latitude

(degrees,

minutes,

seconds)

Longitude

(degrees,

minutes,

seconds)

Source

of data

Depth of

well

(feet)

Land-surface

datum altitude

(feet above

NGVD of

1929)

Depth to

water

(feet below

land-surface

datum

Waterlevel

altitude

(feet above

NGVD of

1929)

Date of

measurement
Appendix 29

15N07E21DAB1 355444 902043 NRCS 110 236 7.50 229 3/28/2002

15N07E35DCB1 355241 901831 NRCS 120 231 8.00 223 3/28/2002

Crittenden County

04N07E21AAD1 345644 902121 USGS 82 202 10.06 192 3/26/2002

05N07E08BDC1 350407 902234 NRCS 110 204 21.70 182 4/18/2002

05N07E28CBA1 350121 902140 USGS -- 201 18.32 183 3/26/2002

05N07E34BAB1 350059 902030 USGS 100 203 15.09 188 3/26/2002

05N07E34CDD1 350010 902028 NRCS 110 205 9.60 195 4/17/2002

05N08E11CCD2 350345 901308 USGS 63 211 27.00 184 3/21/2002

06N07E13BAA1 350850 901808 USGS 130 205 20.15 185 3/26/2002

06N07E14ABA1 350848 901858 NRCS 110 211 20.80 190 4/12/2002

07N06E29CBC1 351152 902914 NRCS 120 210 38.60 171 4/18/2002

07N07E31CCC1 351042 902359 USGS 110 207 32.46 175 3/26/2002

07N08E04BBD1 351538 901505 NRCS 120 224 19.50 205 4/18/2002

07N09E05CDD1 351453 900934 USGS 120 214 14.47 200 3/26/2002

08N06E01DCC1 352021 902408 NRCS 120 215 33.00 182 4/18/2002

08N06E06DDB1 352030 902920 NRCS 120 214 32.30 182 4/19/2002

08N07E13CCC2 351828 901812 USGS 100 221 29.47 192 3/26/2002

08N07E14DAA2 351854 901833 USGS -- 219 30.08 189 3/26/2002

08N07E32DAA1 351618 902146 NRCS 110 215 21.90 193 4/18/2002

08N08E06ABB1 352103 901644 NRCS 110 223 28.80 194 4/19/2002

09N07E02CDB1 352537 901905 NRCS 130 225 34.60 190 4/17/2002

09N07E10DDA1 352448 901925 USGS 60 221 28.15 193 3/26/2002

09N07E31BAB1 352160 902327 USGS 110 221 32.32 189 3/26/2002

09N07E31BAB1 352160 902327 NRCS 110 221 33.60 187 4/18/2002

09N08E04CDC1 352527 901444 NRCS 120 225 28.00 197 4/19/2002

Cross County

06N02E11BDB1 350934 905132 NRCS -- 220 61.00 159 4/18/2002

Appendix 1. Information pertaining to water levels measured in wells completed in the Mississippi River Valley alluvial aquifer in eastern

Arkansas, spring 2002.—Continued

[USGS, U.S. Geological Survey; NRCS, Natural Resources Conservation Service; --, no data; NGVD of 1929; National Geodetic Vertical Datum of 1929;

Horizontal coordinate information is referenced to the North American Datum of 1983 (NAD 83)]

Local well number

Latitude

(degrees,

minutes,

seconds)

Longitude

(degrees,

minutes,

seconds)

Source

of data

Depth of

well

(feet)

Land-surface

datum altitude

(feet above

NGVD of

1929)

Depth to

water

(feet below

land-surface

datum

Waterlevel

altitude

(feet above

NGVD of

1929)

Date of

measurement
30 Status of Water Levels and Selected Water-Quality Conditions in the Mississippi River Valley Alluvial Aquifer in Eastern 

Arkansas, 2002

06N02E12AAA1 350934 904952 NRCS -- 235 80.00 155 4/18/2002

07N01E05CDA1 351518 910049 USGS 140 217 70.18 147 3/21/2002

07N01E05DCA1 351514 910033 NRCS 160 215 72.00 143 4/18/2002

07N01E06CAA1 351530 910154 NRCS -- 220 69.00 151 4/18/2002

07N01E11AAA1 351501 905705 USGS 120 217 73.35 144 3/21/2002

07N01E33BBA1 351134 910010 NRCS -- 215 70.00 145 4/18/2002

07N02E29DDC1 351138 905409 USGS 100 220 68.42 152 3/21/2002

07N03E05ADA1 351549 904739 USGS 160 254 110.71 143 3/21/2002

07N03E32DCC1 351045 904810 USGS -- 251 95.95 155 3/2/2002

07N04E04DBB1 351534 904021 NRCS -- 201 30.00 171 4/18/2002

07N05E19CCC1 351238 903645 USGS -- 207 36.48 171 3/21/2002

07N05E24CCC1 351232 903121 NRCS 110 205 36.60 168 4/18/2002

07N05E25ABA1 351229 903045 USGS 140 205 35.16 170 3/21/2002

07N05E25ABA1 351229 903045 NRCS 140 205 37.00 168 4/18/2002

08N01E16DBB1 351855 905933 NRCS 140 225 84.00 141 4/18/2002

08N02E12DCC1 351938 905002 NRCS -- 230 89.00 141 4/18/2002

08N02E17AAA1 351923 905354 NRCS -- 225 83.00 142 4/18/2002

08N04E34CCD1 351605 903945 NRCS -- 205 31.00 174 4/18/2002

08N05E32ADD1 351632 903440 USGS -- 204 31.98 172 3/21/2002

09N01E04ACD1 352608 905914 NRCS 140 225 85.00 140 4/18/2002

09N01E33BBA2 352203 910001 USGS -- 225 77.00 148 3/21/2002

09N01E36AAB1 352155 905605 NRCS 160 225 83.00 142 4/18/2002

09N02E20AAA1 352402 905342 NRCS 120 230 91.00 139 4/18/2002

09N02E30CBB1 352243 905551 NRCS -- 225 86.00 139 4/18/2002

09N03E17CDD1 352422 904753 NRCS -- 245 102.00 143 4/18/2002

09N03E17DDC1 352409 904726 USGS 160 251 103.32 148 3/21/2002

09N04E03DBB1 352614 903918 NRCS 120 215 31.00 184 4/18/2002

09N05E32BCB1 352151 903525 NRCS -- 206 37.00 169 4/18/2002

Appendix 1. Information pertaining to water levels measured in wells completed in the Mississippi River Valley alluvial aquifer in eastern

Arkansas, spring 2002.—Continued

[USGS, U.S. Geological Survey; NRCS, Natural Resources Conservation Service; --, no data; NGVD of 1929; National Geodetic Vertical Datum of 1929;

Horizontal coordinate information is referenced to the North American Datum of 1983 (NAD 83)]

Local well number

Latitude

(degrees,

minutes,

seconds)

Longitude

(degrees,

minutes,

seconds)

Source

of data

Depth of

well

(feet)

Land-surface

datum altitude

(feet above

NGVD of

1929)

Depth to

water

(feet below

land-surface

datum

Waterlevel

altitude

(feet above

NGVD of

1929)

Date of

measurement
Appendix 31

09N05E32BDB1 352151 903512 USGS -- 210 31.95 178 3/21/2002

Desha County

07S01E19ABA1 340428 910303 NRCS 120 154 13.00 141 4/18/2002

08S03W33ABD1 335803 912338 USGS 60 165 6.14 159 3/4/2002

09S01W08BDA1 335608 911234 NRCS -- 156 23.00 133 4/11/2002

09S01W15CBB1 335501 911055 NRCS -- 152 37.00 115 4/11/2002

09S02W20DAB1 335419 911835 NRCS -- 152 33.00 119 4/11/2002

09S02W26DDC1 335257 911530 USGS 94 149 30.35 119 2/27/2002

09S03W05BAC1 335704 912506 NRCS -- 161 43.00 118 4/11/2002

09S03W13BAB1 335500 911922 NRCS -- 156 31.00 125 4/11/2002

09S03W17DCB1 335448 912457 USGS 126 155 33.74 121 3/4/2002

09S04W06BCA1 335756 913243 USGS -- 161 32.78 128 3/4/2002

10S01W23CDA1 335305 911032 NRCS -- 151 27.00 124 4/11/2002

10S02W11ADD1 335045 911517 NRCS -- 146 27.00 119 4/11/2002

10S02W24DBC1 334850 911453 USGS 70 143 25.62 117 2/27/2002

10S03W26CAA1 334806 912145 USGS 96 155 42.94 112 2/27/2002

11S02W15ADD1 334446 911635 NRCS -- 144 32.00 112 4/11/2002

11S03W16CBA1 334439 912433 NRCS -- 155 32.00 123 4/11/2002

11S03W31BBA1 334228 912651 USGS -- 148 31.47 117 2/27/2002

12S01W33BAA1 333718 911205 USGS 95 135 25.70 109 2/27/2002

13S02W17ADA1 333421 911858 NRCS -- 138 43.00 95 4/11/2002

13S02W27CAC1 333224 911735 USGS 120 133 30.38 103 2/27/2002

13S02W32DBD1 333126 911917 NRCS -- 135 38.00 97 4/11/2002

13S03W10DAA1 333506 912302 USGS 86 140 44.20 96 2/27/2002

13S03W11CAB1 333503 912241 NRCS -- 142 46.00 96 4/11/2002

Drew County

11S04W08DBA1 334532 913136 USGS 70 160 23.98 136 2/27/2002

11S05W08CCC1 334546 913837 USGS 153 185 35.05 150 2/27/2002

Appendix 1. Information pertaining to water levels measured in wells completed in the Mississippi River Valley alluvial aquifer in eastern

Arkansas, spring 2002.—Continued

[USGS, U.S. Geological Survey; NRCS, Natural Resources Conservation Service; --, no data; NGVD of 1929; National Geodetic Vertical Datum of 1929;

Horizontal coordinate information is referenced to the North American Datum of 1983 (NAD 83)]

Local well number

Latitude

(degrees,

minutes,

seconds)

Longitude

(degrees,

minutes,

seconds)

Source

of data

Depth of

well

(feet)

Land-surface

datum altitude

(feet above

NGVD of

1929)

Depth to

water

(feet below

land-surface

datum

Waterlevel

altitude

(feet above

NGVD of

1929)

Date of

measurement
32 Status of Water Levels and Selected Water-Quality Conditions in the Mississippi River Valley Alluvial Aquifer in Eastern 

Arkansas, 2002

11S06W34DAC2 334239 914226 USGS 175 209 66.20 143 2/27/2002

12S04W03ABB1 334134 912946 USGS -- 155 22.92 132 2/27/2002

12S04W25DBB1 333739 912738 NRCS 90 149 28.00 121 4/9/2002

13S04W09ACD1 333512 913034 NRCS 90 145 16.40 129 4/9/2002

13S04W28CDD1 333206 913100 USGS 65 139 18.09 121 2/26/2002

13S04W29CAB1 333231 913206 NRCS 100 135 12.00 123 4/10/2002

13S04W33BAA1 333206 913100 USGS 130 138 18.09 120 2/26/2002

13S05W29ADA1 333248 913747 USGS -- 185 46.04 139 5/1/2002

13S06W03DDC1 333545 914202 USGS 110 191 59.16 132 2/26/2002

13S06W21DAA1 333324 914258 NRCS 142 207 81.00 126 4/1/2002

14S04W03ADD1 333050 912929 NRCS 92 141 24.00 117 4/9/2002

14S04W05CBA1 333047 913218 NRCS 90 131 13.00 118 4/10/2002

14S04W05CBC1 333042 913226 NRCS 90 131 14.00 117 4/10/2002

14S04W22CAA1 332805 912957 NRCS 100 135 16.00 119 4/9/2002

14S05W23DCB1 332802 913512 USGS 42 161 22.70 138 2/27/2002

Greene County

16N03E03BA1 360316 904516 USGS 100 260 28.81 231 3/28/2002

16N03E05BBB1 360316 904750 NRCS 105 257 26.90 230 4/11/2002

16N03E12BBC1 360218 904333 NRCS 120 275 48.30 227 4/11/2002

16N03E16DDD1 360049 904547 NRCS 100 258 26.00 232 4/11/2002

16N03E29ACC1 355926 904722 NRCS 100 257 29.80 227 4/11/2002

16N06E03CCC1 360224 902626 USGS 194 258 40.63 217 3/27/2002

16N06E09ABB1 360215 902651 NRCS 90 261 52.10 209 4/5/2002

16N06E21BAA1 360031 902705 NRCS 130 249 29.80 219 4/5/2002

16N06E28ABB1 355938 902657 USGS -- 251 28.42 223 3/27/2002

17N03E02DCC1 360806 904352 NRCS 100 267 29.60 237 4/11/2002

17N03E28CDB1 360422 904626 NRCS 100 260 27.10 233 4/11/2002

17N04E07AD1 360718 904122 NRCS 100 273 38.80 234 4/11/2002

Appendix 1. Information pertaining to water levels measured in wells completed in the Mississippi River Valley alluvial aquifer in eastern

Arkansas, spring 2002.—Continued

[USGS, U.S. Geological Survey; NRCS, Natural Resources Conservation Service; --, no data; NGVD of 1929; National Geodetic Vertical Datum of 1929;

Horizontal coordinate information is referenced to the North American Datum of 1983 (NAD 83)]

Local well number

Latitude

(degrees,

minutes,

seconds)

Longitude

(degrees,

minutes,

seconds)

Source

of data

Depth of

well

(feet)

Land-surface

datum altitude

(feet above

NGVD of

1929)

Depth to

water

(feet below

land-surface

datum

Waterlevel

altitude

(feet above

NGVD of

1929)

Date of

measurement
Appendix 33

17N04E29ADD1 360434 904019 NRCS 110 282 59.80 222 4/11/2002

17N04E30CDC1 360409 904218 USGS 100 265 34.96 230 3/28/2002

17N06E15ABC1 360631 902546 NRCS 168 268 35.20 233 4/5/2002

17N06E22CBB1 360520 902521 NRCS 200 268 32.60 235 4/5/2002

17N07E03CCC1 360744 901951 NRCS 87 246 4.10 242 4/5/2002

17N07E18ABB1 360638 902235 USGS -- 245 5.48 240 3/27/2002

17N07E29CBC1 360419 902201 NRCS 80 245 1.70 243 4/5/2002

18N03E24ACA1 361119 904216 NRCS 120 271 32.10 239 4/11/2002

18N04E04AAC1 361356 903854 NRCS 127 273 28.60 244 4/11/2002

18N04E21CBD1 361052 903725 USGS -- 294 53.04 241 3/27/2002

18N04E28DAD1 361003 903845 NRCS 100 277 37.90 239 4/11/2002

18N07E17BAB1 361203 902105 NRCS 100 262 6.40 256 4/5/2002

18N07E20BBA1 361110 902113 USGS -- 257 3.77 253 3/27/2002

18N08E29CBA1 360952 901447 NRCS 105 250 4.40 246 4/5/2002

19N03E26AD1 361601 904258 USGS 100 281 27.70 253 3/27/2002

19N03E33DDD1 361418 904516 NRCS 100 276 33.30 243 4/11/2002

19N04E30DBB1 361532 904119 NRCS 100 281 35.60 245 4/11/2002

19N05E34AAD1 361437 903102 NRCS 130 282 36.80 245 4/11/2002

11N04W02ABB1 353650 912416 NRCS -- 227 9.10 218 4/10/2002

12N04W09CAA1 354046 912533 USGS -- 236 21.11 215 3/27/2002

12N04W14DD1 353929 912236 USGS 60 231 15.74 215 3/27/2002

12N04W34CBB1 353720 912513 USGS -- 231 8.60 222 3/27/2002

12N05W36AAA1 353738 912827 USGS -- 236 12.62 223 3/27/2002

12N05W36AAA1 353738 912827 NRCS -- 236 14.10 222 4/10/2002

14N03W12CAB1 355152 911541 NRCS -- 230 1.00 229 4/10/2002

14N03W14CBB1 355101 911703 NRCS -- 235 13.50 222 4/10/2002

14N03W14DAA2 355107 911602 USGS -- 230 0.70 229 3/27/2002

14N03W14DBB1 355106 911640 USGS 65 230 1.50 229 3/27/2002

Appendix 1. Information pertaining to water levels measured in wells completed in the Mississippi River Valley alluvial aquifer in eastern

Arkansas, spring 2002.—Continued

[USGS, U.S. Geological Survey; NRCS, Natural Resources Conservation Service; --, no data; NGVD of 1929; National Geodetic Vertical Datum of 1929;

Horizontal coordinate information is referenced to the North American Datum of 1983 (NAD 83)]

Local well number

Latitude

(degrees,

minutes,

seconds)

Longitude

(degrees,

minutes,

seconds)

Source

of data

Depth of

well

(feet)

Land-surface

datum altitude

(feet above

NGVD of

1929)

Depth to

water

(feet below

land-surface

datum

Waterlevel

altitude

(feet above

NGVD of

1929)

Date of

measurement
34 Status of Water Levels and Selected Water-Quality Conditions in the Mississippi River Valley Alluvial Aquifer in Eastern 

Arkansas, 2002

Jackson County

09N01W15DDD1 352357 910433 NRCS 90 220 58.00 162 4/8/2002

09N01W22ADD1 352332 910433 USGS 125 215 59.07 156 3/21/2002

09N01W30BAC1 352258 910813 NRCS 120 218 42.60 175 4/3/2002

09N02W32BBB1 352215 911344 NRCS 100 220 31.50 189 4/3/2002

09N02W32CBB1 352152 911348 USGS 117 220 29.92 190 3/21/2002

10N01W05ADD1 353132 910702 NRCS -- 227 44.80 182 3/28/2002

10N01W10ABA1 353055 910445 NRCS 135 223 55.70 167 3/28/2002

10N02W29ABB1 352829 911312 USGS -- 227 27.93 199 3/21/2002

11N01W26AAD1 353330 910323 USGS 95 227 64.77 162 3/21/2002

11N01W26AAD1 353330 910323 NRCS 95 227 63.72 163 3/28/2002

11N01W29AAD1 353339 910635 USGS 97 225 39.52 185 3/27/2002

11N02W25BBD1 353322 910855 NRCS 100 221 25.10 196 3/28/2002

11N03W06DAB1 353655 912009 USGS 100 223 10.15 213 3/21/2002

11N03W12DDB1 353542 911515 NRCS 150 231 16.00 215 4/2/2002

12N01W11BCB1 354127 910416 NRCS 110 233 37.30 196 3/28/2002

12N01W30CCC2 353812 910821 NRCS 140 227 32.90 194 3/28/2002

12N01W36CBC1 353724 910317 NRCS 120 236 48.90 187 3/28/2002

12N02W25ABB2 353910 910852 USGS -- 234 36.86 197 3/21/2002

13N01W20AAA1 354514 910627 USGS 147 242 38.59 203 3/21/2002

13N01W23BCC1 354444 910413 NRCS 100 246 44.00 202 3/28/2002

13N02W34CBB1 354306 911151 NRCS 100 240 20.00 220 4/2/2002

13N03W15CDD1 354526 911749 USGS -- 232 14.77 217 3/21/2002

13N03W15DCB1 354540 911718 NRCS 80 238 11.30 227 4/2/2002

13N03W36ABB1 354337 911532 NRCS 110 241 16.20 225 4/3/2002

14N01W08AAA1 355216 910623 NRCS 80 252 34.50 218 4/3/2002

14N01W09AAA1 355220 910515 USGS -- 251 40.36 211 3/27/2002

14N01W19BBB1 355032 910823 NRCS 100 246 31.20 215 4/3/2002

Appendix 1. Information pertaining to water levels measured in wells completed in the Mississippi River Valley alluvial aquifer in eastern

Arkansas, spring 2002.—Continued

[USGS, U.S. Geological Survey; NRCS, Natural Resources Conservation Service; --, no data; NGVD of 1929; National Geodetic Vertical Datum of 1929;

Horizontal coordinate information is referenced to the North American Datum of 1983 (NAD 83)]

Local well number

Latitude

(degrees,

minutes,

seconds)

Longitude

(degrees,

minutes,

seconds)

Source

of data

Depth of

well

(feet)

Land-surface

datum altitude

(feet above

NGVD of

1929)

Depth to

water

(feet below

land-surface

datum

Waterlevel

altitude

(feet above

NGVD of

1929)

Date of

measurement
Appendix 35

14N01W26BCB1 354922 910407 NRCS 110 247 43.10 204 4/3/2002

14N01W33CCD1 354759 910610 NRCS 100 245 38.20 207 3/28/2002

14N02W22BBC1 355026 911145 NRCS 100 250 24.50 226 4/3/2002

Jefferson County

03S07W36ACC1 342410 914253 NRCS -- 185 19.00 166 4/26/2002

03S08W24BBC1 342620 914953 USGS 135 202 48.62 153 3/5/2002

03S09W06DDA1 342840 920037 USGS -- 225 36.79 188 3/5/2002

03S09W22AAA1 342640 915728 NRCS 100 218 38.50 180 5/2/2002

03S09W29CBD1 342517 920023 USGS -- 216 25.90 190 3/5/2002

03S09W36ACC1 342428 915555 NRCS -- 214 38.00 176 5/2/2002

03S10W25BCA2 342537 920242 NRCS -- 216 18.00 198 5/3/2002

03S10W26BBB2 342427 920250 NRCS -- 215 17.50 198 5/3/2002

04S07W35DDB1 341836 914347 NRCS -- 185 26.50 159 4/26/2002

04S08W13DCB1 342123 914926 USGS 110 204 43.70 160 3/5/2002

04S08W33CDA1 341848 915244 NRCS -- 209 31.00 178 4/26/2002

04S09W02CBD1 342325 915717 NRCS 110 212 32.00 180 5/2/2002

04S09W32DDA1 341859 920009 NRCS -- 212 18.00 194 5/3/2002

05S06W31CAA1 341330 914206 USGS -- 189 15.41 174 3/5/2002

05S07W29DDD1 341411 914654 NRCS 110 194 13.50 181 4/26/2002

05S08W12DAA1 341712 914907 USGS 101 194 16.71 178 3/5/2002

06S05W15BCA1 341023 913245 USGS 120 177 20.20 157 3/5/2002

06S06W23AAD1 341007 913712 USGS 107 189 19.26 170 3/5/2002

06S07W14BAA1 341125 914426 USGS 110 199 15.14 184 3/5/2002

07S07W16BAA1 340722 914828 NRCS -- 190 29.00 161 4/26/2002

07S07W18CAC1 340647 915037 USGS 65 186 25.82 160 3/5/2002

07S08W06BAA1 340859 915647 USGS 160 202 19.64 183 3/5/2002

Lawrence County

15N01E11ADD1 355657 905638 NRCS 100 255 40.80 214 4/11/2002

Appendix 1. Information pertaining to water levels measured in wells completed in the Mississippi River Valley alluvial aquifer in eastern

Arkansas, spring 2002.—Continued

[USGS, U.S. Geological Survey; NRCS, Natural Resources Conservation Service; --, no data; NGVD of 1929; National Geodetic Vertical Datum of 1929;

Horizontal coordinate information is referenced to the North American Datum of 1983 (NAD 83)]

Local well number

Latitude

(degrees,

minutes,

seconds)

Longitude

(degrees,

minutes,

seconds)

Source

of data

Depth of

well

(feet)

Land-surface

datum altitude

(feet above

NGVD of

1929)

Depth to

water

(feet below

land-surface

datum

Waterlevel

altitude

(feet above

NGVD of

1929)

Date of

measurement
36 Status of Water Levels and Selected Water-Quality Conditions in the Mississippi River Valley Alluvial Aquifer in Eastern 

Arkansas, 2002

15N01E23DAD1 355502 905637 NRCS 100 250 44.40 206 4/10/2002

15N01E26DDA1 355402 905639 USGS 100 251 49.55 201 3/27/2002

15N01W03BAB1 355831 910441 NRCS 105 259 37.50 222 4/15/2002

15N01W35CBB1 355336 910356 USGS -- 250 43.05 207 3/27/2002

16N01E11DAC2 360203 905639 USGS -- 262 44.16 218 3/27/2002

16N01E35AAA1 355908 905632 NRCS 105 256 41.80 214 4/10/2002

16N01W30DDC1 355937 910723 NRCS 105 255 22.00 233 4/15/2002

16N02E09AAD1 360219 905212 NRCS 110 261 38.00 223 4/12/2002

16N02E19ACA1 360031 905442 NRCS 110 260 38.60 221 4/12/2002

16N02E34CBB1 355831 905208 NRCS 100 255 42.00 213 4/10/2002

17N01E02BBA1 360901 905707 NRCS 90 260 11.40 249 4/15/2002

17N01E21CBC1 360543 905931 NRCS 110 265 21.00 244 4/9/2002

17N01E27AAA1 360519 905732 NRCS 110 270 32.00 238 4/9/2002

17N01W36AAB1 360435 910158 NRCS 85 257 12.30 245 4/9/2002

17N02E04DCA1 360758 905224 NRCS 110 270 37.50 233 4/12/2002

17N02E19CDC1 360516 905449 USGS 105 265 38.48 227 3/27/2002

17N02E19CDC1 360516 905449 NRCS 105 265 37.10 228 4/12/2002

17N02E21ABD1 360554 905225 NRCS 105 268 39.50 229 4/12/2002

17N02E25CBD1 360423 904948 NRCS 100 265 34.10 231 4/12/2002

Lee County

01N01E04AAB1 344358 910015 NRCS 140 175 25.00 150 4/10/2002

01N01E09CCC1 344215 910054 NRCS 140 182 28.00 154 4/12/2002

01N01E24CBD1 344033 905729 NRCS 140 185 13.30 172 4/12/2002

01N02E01ADD1 344330 905016 NRCS 140 207 25.00 182 4/17/2002

01N02E11BAB1 344255 905208 NRCS 140 202 22.00 180 4/17/2002

01N02E12ABB1 344254 905040 NRCS 140 206 27.00 179 4/10/2002

01N02E22CBA1 344056 905318 NRCS 140 200 25.00 175 4/17/2002

01N02E33CBB1 343858 905434 NRCS 140 186 11.50 175 4/12/2002

Appendix 1. Information pertaining to water levels measured in wells completed in the Mississippi River Valley alluvial aquifer in eastern

Arkansas, spring 2002.—Continued

[USGS, U.S. Geological Survey; NRCS, Natural Resources Conservation Service; --, no data; NGVD of 1929; National Geodetic Vertical Datum of 1929;

Horizontal coordinate information is referenced to the North American Datum of 1983 (NAD 83)]

Local well number

Latitude

(degrees,

minutes,

seconds)

Longitude

(degrees,

minutes,

seconds)

Source

of data

Depth of

well

(feet)

Land-surface

datum altitude

(feet above

NGVD of

1929)

Depth to

water

(feet below

land-surface

datum

Waterlevel

altitude

(feet above

NGVD of

1929)

Date of

measurement
Appendix 37

01N02E33CCB1 343851 905433 NRCS 140 185 10.00 175 4/12/2002

01N03E02BBC1 344339 904601 USGS 168 236 53.46 183 3/14/2002

01N03E27ADD1 343952 904605 NRCS 120 204 10.50 194 4/17/2002

01N03E35BBA1 343923 904549 USGS 120 202 12.87 189 3/14/2002

02N01E21BAA1 344633 910005 NRCS 140 185 30.80 154 4/12/2002

02N01E23BAA1 344631 905817 USGS 137 198 47.57 150 3/14/2002

02N01E23BAA2 344632 905820 USGS 137 202 47.57 154 3/14/2002

02N01W12BAA1 344828 910330 USGS 95 185 40.55 144 3/20/2002

02N01W34DDC1 344410 910520 NRCS 140 180 44.50 136 4/10/2002

02N02E08ADC1 344807 905339 USGS 120 201 40.01 161 3/14/2002

02N02E21ABC1 344622 905358 USGS 120 200 38.20 162 3/14/2002

02N02E22BBB1 344628 905327 NRCS 140 200 32.00 168 4/10/2002

02N02E36DDC1 344355 905020 NRCS 140 205 25.00 180 4/17/2002

02N03E08AAD1 344811 904838 USGS 100 211 44.45 167 3/20/2002

02N03E09DDD1 344723 904707 NRCS 120 220 48.50 172 4/18/2002

02N03E29CAD1 344500 904846 NRCS 140 220 44.00 176 4/10/2002

02N04E03ABD1 344855 903954 NRCS 140 192 23.00 169 4/16/2002

02N04E15DAC1 344637 903950 USGS 60 192 18.57 173 3/20/2002

03N01E03CBC1 345355 905941 NRCS 140 205 62.00 143 4/10/2002

03N01E16CBA1 345222 910040 USGS 110 202 60.66 141 3/20/2002

03N01E32BCC1 344951 910150 NRCS 140 200 59.00 141 4/10/2002

03N02E12CDC1 345239 905053 NRCS 140 210 45.00 165 4/16/2002

03N02E13BBA1 345237 905107 USGS 65 212 48.76 163 3/20/2002

03N02E21CBC1 345111 905428 NRCS 140 209 52.50 157 4/16/2002

03N02E29DAD1 345014 905430 USGS 135 205 43.13 162 3/14/2002

03N03E05CDD1 345327 904837 NRCS 110 204 44.00 160 4/9/2002

03N03E11DCC1 345245 904507 NRCS 140 229 64.00 165 4/16/2002

03N03E18DAB1 345206 904919 NRCS 140 196 30.00 166 4/16/2002

Appendix 1. Information pertaining to water levels measured in wells completed in the Mississippi River Valley alluvial aquifer in eastern

Arkansas, spring 2002.—Continued

[USGS, U.S. Geological Survey; NRCS, Natural Resources Conservation Service; --, no data; NGVD of 1929; National Geodetic Vertical Datum of 1929;

Horizontal coordinate information is referenced to the North American Datum of 1983 (NAD 83)]

Local well number

Latitude

(degrees,

minutes,

seconds)

Longitude

(degrees,

minutes,

seconds)

Source

of data

Depth of

well

(feet)

Land-surface

datum altitude

(feet above

NGVD of

1929)

Depth to

water

(feet below

land-surface

datum

Waterlevel

altitude

(feet above

NGVD of

1929)

Date of

measurement
38 Status of Water Levels and Selected Water-Quality Conditions in the Mississippi River Valley Alluvial Aquifer in Eastern 

Arkansas, 2002

03N03E32CAB1 344933 904926 USGS 116 204 48.80 155 3/14/2002

03N04E07CBB1 345245 904312 NRCS 140 200 31.50 169 4/16/2002

03N05E03ADB1 345403 903316 NRCS 140 197 21.50 176 4/16/2002

03N05E14DDA1 345148 903203 USGS 120 193 13.96 179 3/20/2002

03N05E26ADC1 345020 903215 NRCS 140 185 6.50 179 4/16/2002

Lincoln County

07S06W03CCA2 340828 914114 NRCS 110 190 13.00 177 4/19/2002

07S07W36CBD1 340411 914529 NRCS 123 183 41.00 142 4/19/2002

08S04W06ABD1 340341 913116 NRCS 95 171 17.00 154 4/19/2002

08S04W08BBB2 340254 913101 USGS 65 171 19.76 151 3/4/2002

08S04W29ABC1 340021 913044 NRCS 100 176 42.00 134 4/19/2002

08S04W31CBA1 335901 913150 USGS 99 162 31.48 130 3/4/2002

08S05W12AAD1 340246 913214 NRCS 83 165 21.00 144 4/19/2002

08S05W21DCD1 340027 913533 NRCS 120 169 36.00 133 4/19/2002

08S05W32DCC1 335840 913644 NRCS 100 172 44.00 128 4/19/2002

08S06W02ACB1 340339 913958 USGS 68 181 41.39 140 3/4/2002

08S07W05DDD1 340301 914903 USGS 97 190 28.68 161 3/2/2002

09S04W06CBB1 335721 913252 NRCS 110 163 32.00 131 4/19/2002

09S05W14ABC1 335553 913439 USGS 98 173 36.62 136 3/4/2002

09S05W17BCB1 335552 913820 USGS 97 171 39.69 131 3/4/2002

09S05W19CCC1 335428 913941 NRCS 110 171 34.00 137 4/19/2002

09S06W04BCD1 335821 914346 USGS 63 181 38.85 142 3/4/2002

09S06W04BDD1 335759 914335 NRCS 100 178 38.00 140 4/19/2002

09S06W23CDB1 335440 914136 USGS 70 175 29.27 146 3/4/2002

10S05W06DCC1 335155 913908 USGS 65 175 28.92 146 3/4/2002

Lonoke County

01N07W27AAD1 344103 914410 USGS 148 220 131.55 88 4/2/2002

01N08W03DDA1 344411 915050 NRCS -- 229 129.50 100 4/19/2002

Appendix 1. Information pertaining to water levels measured in wells completed in the Mississippi River Valley alluvial aquifer in eastern

Arkansas, spring 2002.—Continued

[USGS, U.S. Geological Survey; NRCS, Natural Resources Conservation Service; --, no data; NGVD of 1929; National Geodetic Vertical Datum of 1929;

Horizontal coordinate information is referenced to the North American Datum of 1983 (NAD 83)]

Local well number

Latitude

(degrees,

minutes,

seconds)

Longitude

(degrees,

minutes,

seconds)

Source

of data

Depth of

well

(feet)

Land-surface

datum altitude

(feet above

NGVD of

1929)

Depth to

water

(feet below

land-surface

datum

Waterlevel

altitude

(feet above

NGVD of

1929)

Date of

measurement
Appendix 39

01N08W14DAA1 344237 914946 NRCS -- 230 130.00 100 4/19/2002

01N08W26CCB1 344035 915043 USGS 155 212 100.67 111 4/2/2002

01N09W07DAA1 344337 920030 NRCS -- 240 49.20 191 4/17/2002

01N09W13DAB1 344235 915517 USGS 150 226 85.75 140 4/2/2002

01N09W25BAA1 344120 915538 NRCS -- 226 87.50 139 4/17/2002

01N10W11BBD1 344356 920323 USGS 100 240 30.55 209 4/2/2002

01N10W15CDA1 344236 920415 NRCS 100 240 30.80 209 4/17/2002

01S06W31ABB1 343459 914131 USGS 120 200 78.37 122 3/18/2002

01S06W32BBB1 343501 914056 NRCS -- 201 79.30 122 4/17/2002

01S07W12ABA1 343834 914230 USGS 140 207 67 140 3/18/2002

01S08W24CDD1 343606 914912 USGS 127 210 79.35 131 3/18/2002

01S08W29DBA1 343544 915312 USGS 88 219 74.50 145 3/18/2002

01S09W02DDD1 343857 915624 NRCS -- 230 88.50 142 4/17/2002

01S09W36CCC1 343435 915619 USGS 95 220 60.76 159 3/18/2002

01S10W01ACB1 343927 920215 USGS -- 236 46.00 190 3/18/2002

02N07W07DAA1 344845 914707 NRCS -- 232 132.60 99 4/17/2002

02N07W16BAB1 344815 914540 USGS 184 240 135.09 105 3/22/2002

02N08W16ABC1 344806 915114 USGS 128 230 118.40 112 3/22/2002

02N08W23CAB1 344659 915118 NRCS -- 229 133.50 96 4/19/2002

02N09W02BDB1 344955 915841 USGS 140 251 118.84 132 4/2/2002

02N09W17CBC1 344753 920010 USGS -- 255 89.99 165 2/1/2002

02N09W17CBC2 344751 920010 USGS -- 255 85.92 169 2/1/2002

02N09W17CBC3 344747 920008 USGS -- 255 83.97 171 2/1/2002

02N09W17CCB1 344747 920007 USGS 127 253 83.88 169 3/8/2002

02N09W18DAA1 344755 920022 USGS -- 255 84.35 171 3/8/2002

02N09W18DAD2 344754 920020 USGS -- 255 83.55 171 2/1/2002

02N09W18DAD3 344754 920011 USGS -- 255 90.42 165 2/1/2002

02S07W05CDC1 343326 914715 NRCS -- 205 66.90 138 4/19/2002

Appendix 1. Information pertaining to water levels measured in wells completed in the Mississippi River Valley alluvial aquifer in eastern

Arkansas, spring 2002.—Continued

[USGS, U.S. Geological Survey; NRCS, Natural Resources Conservation Service; --, no data; NGVD of 1929; National Geodetic Vertical Datum of 1929;

Horizontal coordinate information is referenced to the North American Datum of 1983 (NAD 83)]

Local well number

Latitude

(degrees,

minutes,

seconds)

Longitude

(degrees,

minutes,

seconds)

Source

of data

Depth of

well

(feet)

Land-surface

datum altitude

(feet above

NGVD of

1929)

Depth to

water

(feet below

land-surface

datum

Waterlevel

altitude

(feet above

NGVD of

1929)

Date of

measurement
40 Status of Water Levels and Selected Water-Quality Conditions in the Mississippi River Valley Alluvial Aquifer in Eastern 

Arkansas, 2002

02S07W10CCB1 343246 914525 USGS -- 201 61.03 140 3/8/2002

02S07W20ACD1 343112 914655 NRCS -- 201 58.70 142 4/19/2002

02S08W13BBB1 343232 914935 USGS -- 200 57.08 143 3/8/2002

02S08W34DBB1 343003 915150 USGS -- 214 60.67 153 3/8/2002

02S09W30CDD1 343014 920116 USGS 80 226 36.56 189 3/8/2002

02S09W35AB1 343008 915653 NRCS 100 217 51.00 166 4/19/2002

03N07W08BDB1 345407 914638 USGS 125 250 92.71 157 4/16/2002

03N07W15DBC2 345253 914417 USGS 145 227 79.22 148 3/22/2002

03N07W29ADA1 345129 914558 USGS 120 234 87.30 147 4/16/2002

03N07W35CDC2 344957 914332 USGS -- 232 113.25 119 3/22/2002

03N08W03BAA1 345519 915054 USGS 162 260 88.18 172 4/15/2002

03N08W03CCC1 345430 915123 USGS 162 260 96.38 164 4/15/2002

03N08W05CCC1 345429 915323 USGS 130 257 77.23 180 4/15/2002

03N08W08ABA1 345427 915248 USGS 150 258 90.43 168 4/15/2002

03N08W10ACB1 345415 915053 USGS 150 250 84.12 166 4/15/2002

03N08W10ADD1 345401 915023 USGS 165 250 82.29 168 4/15/2002

03N08W11ABD1 345419 914936 USGS 160 260 97.50 163 4/16/2002

03N08W11ACA1 345413 914934 USGS 144 256 94.92 161 4/17/2002

03N08W21BCC1 345220 915220 USGS 155 247 79.35 168 3/22/2002

03N08W26CDC1 345100 915007 NRCS 150 235 107.50 128 4/19/2002

03N08W29BBB1 345147 915333 USGS 152 249 108.95 140 4/15/2002

03N08W29BCC1 345125 915333 USGS 150 250 124.06 126 4/15/2002

03N08W32ABB2 345057 915259 USGS 154 250 115.68 134 3/19/2002

03N08W34ADD1 345035 915028 USGS 130 240 113.30 127 4/15/2002

03N10W34ABB1 345101 920352 USGS 116 257 57.50 200 4/1/2002

04N08W05ACA1 350020 915247 USGS 138 238 44.08 194 4/16/2002

04N08W10BDD1 345917 915055 USGS 130 218 24.56 193 4/15/2002

04N08W15BCB2 345833 915121 USGS 104 225 32.08 193 3/19/2002

Appendix 1. Information pertaining to water levels measured in wells completed in the Mississippi River Valley alluvial aquifer in eastern

Arkansas, spring 2002.—Continued

[USGS, U.S. Geological Survey; NRCS, Natural Resources Conservation Service; --, no data; NGVD of 1929; National Geodetic Vertical Datum of 1929;

Horizontal coordinate information is referenced to the North American Datum of 1983 (NAD 83)]

Local well number

Latitude

(degrees,

minutes,

seconds)

Longitude

(degrees,

minutes,

seconds)

Source

of data

Depth of

well

(feet)

Land-surface

datum altitude

(feet above

NGVD of

1929)

Depth to

water

(feet below

land-surface

datum

Waterlevel

altitude

(feet above

NGVD of

1929)

Date of

measurement
Appendix 41

04N08W16DCC1 345757 915154 USGS 155 225 43.18 182 4/15/2002

04N08W20ADD1 345735 915229 USGS 90 248 63.89 184 4/15/2002

04N08W26AAD1 345652 914917 USGS 130 246 66.89 179 4/15/2002

04N08W28CAC1 345620 915216 USGS 141 235 50.88 184 4/15/2002

04N08W28CAD1 345626 915204 USGS 115 249 66.36 183 4/15/2002

04N08W28CCC1 345615 915225 USGS 137 240 56.53 183 4/15/2002

04N08W36DBB1 345541 914914 USGS 130 259 87.50 172 4/15/2002

Mississippi County

10N08E21ABA1 352852 901415 NRCS 110 224 26.40 198 4/10/2002

10N08E21BDC1 352830 901407 NRCS 100 224 25.00 199 4/10/2002

10N08E22ABA2 352851 901312 USGS 100 224 23.20 201 3/26/2002

10N09E08ACC1 352949 900926 USGS 110 230 14.64 215 3/26/2002

11N09E34BBB1 353218 900715 USGS 94 235 17.12 218 3/26/2002

11N10E09BCB1 353530 900202 NRCS 110 236 14.80 221 4/10/2002

12N08E08BCB1 354047 901559 USGS 120 225 6.44 219 3/26/2002

12N08E28DDB1 353707 901406 NRCS 120 225 12.00 213 4/10/2002

12N09E12ABC1 354054 900449 NRCS 120 232 8.70 223 4/11/2002

12N10E04CAA1 354124 900136 NRCS 120 235 9.40 226 4/11/2002

12N10E07BCD1 354036 900404 NRCS 110 234 11.50 223 4/11/2002

12N10E21DBA1 353842 900122 NRCS 110 236 14.90 221 4/10/2002

13N08E24ABB1 354428 901112 NRCS 120 230 11.00 219 4/10/2002

13N09E30CCD1 354248 901029 USGS -- 230 6.91 223 3/25/2002

13N10E34DBB1 354218 900024 USGS 98 235 6.10 229 3/25/2002

14N08E12DAB1 355104 901052 USGS -- 235 3.85 231 3/25/2002

14N08E20DAA1 354921 901458 NRCS 110 225 4.00 221 4/10/2002

14N08E26CC1 354803 901235 NRCS 100 230 4.00 226 4/10/2002

14N10E18ABC1 355022 900345 USGS 101 236 9.25 227 3/25/2002

14N11E03BCB1 355158 895433 USGS 128 247 3.87 243 3/25/2002

Appendix 1. Information pertaining to water levels measured in wells completed in the Mississippi River Valley alluvial aquifer in eastern

Arkansas, spring 2002.—Continued

[USGS, U.S. Geological Survey; NRCS, Natural Resources Conservation Service; --, no data; NGVD of 1929; National Geodetic Vertical Datum of 1929;

Horizontal coordinate information is referenced to the North American Datum of 1983 (NAD 83)]

Local well number

Latitude

(degrees,

minutes,

seconds)

Longitude

(degrees,

minutes,

seconds)

Source

of data

Depth of

well

(feet)

Land-surface

datum altitude

(feet above

NGVD of

1929)

Depth to

water

(feet below

land-surface

datum

Waterlevel

altitude

(feet above

NGVD of

1929)

Date of

measurement
42 Status of Water Levels and Selected Water-Quality Conditions in the Mississippi River Valley Alluvial Aquifer in Eastern 

Arkansas, 2002

14N11E17CCB1 354955 895639 NRCS 120 240 7.90 232 4/11/2002

14N11E33CAA1 354727 895508 NRCS 120 240 7.80 232 4/11/2002

14N12E05DCB1 355134 894935 USGS -- 250 10.40 240 3/25/2002

15N08E08DBC2 355605 901526 USGS 120 236 7.87 228 3/26/2002

15N10E21ABC1 355447 900135 NRCS 120 240 9.00 231 4/10/2002

15N12E01BCD1 355704 894601 NRCS 100 258 12.60 245 4/11/2002

16N10E28BBD1 355906 900156 USGS 120 238 5.28 233 3/25/2002

16N10E28BBD1 355906 900156 NRCS 120 238 8.00 230 4/10/2002

16N11E23ADA1 355947 895231 USGS -- 255 10.10 245 3/25/2002

Monroe County

01N01W03CDB1 344322 910557 NRCS 100 185 49.00 136 4/17/2002

01N01W21CDC2 344037 910707 USGS 150 181 33.87 147 3/13/2002

01N02W12CBC1 344242 911032 USGS 110 182 36.21 146 5/1/2002

01N03W23BAC1 344124 911743 NRCS 100 170 13.00 157 4/10/2002

01N03W24BBB1 344135 911651 USGS 125 185 31.11 154 3/13/2002

01N04W33BBB2 343960 912649 USGS -- 218 93.82 124 3/13/2002

01S01W13CDD1 343611 910341 USGS 135 178 20.08 158 3/12/2002

01S01W16DB 343615 910632 NRCS 100 175 16.50 159 4/10/2002

01S01W18DCD1 343618 910849 USGS 110 178 23.25 155 3/13/2002

01S02W20BBB1 343613 911456 USGS 100 170 12.00 158 3/12/2002

01S02W20BBB1 343613 911456 NRCS 100 170 11.00 159 4/10/2002

01S03W20BBA1 343538 912118 USGS 140 210 73.16 137 3/13/2002

01S03W20BBA1 343538 912118 NRCS 140 210 78.50 132 4/10/2002

01S04W01BAB1 343906 912317 USGS 160 210 76.91 133 3/13/2002

02N01W19ADD1 344624 910814 NRCS 80 188 48.00 140 4/17/2002

02N01W19BBA1 344645 910912 USGS 75 191 51.15 140 3/13/2002

02N03W35BCA1 344455 911745 NRCS 100 188 29.00 159 4/10/2002

02S01W01BCD1 343305 910408 NRCS 100 176 20.00 156 4/10/2002

Appendix 1. Information pertaining to water levels measured in wells completed in the Mississippi River Valley alluvial aquifer in eastern

Arkansas, spring 2002.—Continued

[USGS, U.S. Geological Survey; NRCS, Natural Resources Conservation Service; --, no data; NGVD of 1929; National Geodetic Vertical Datum of 1929;

Horizontal coordinate information is referenced to the North American Datum of 1983 (NAD 83)]

Local well number

Latitude

(degrees,

minutes,

seconds)

Longitude

(degrees,

minutes,

seconds)

Source

of data

Depth of

well

(feet)

Land-surface

datum altitude

(feet above

NGVD of

1929)

Depth to

water

(feet below

land-surface

datum

Waterlevel

altitude

(feet above

NGVD of

1929)

Date of

measurement
Appendix 43

02S02W01BCA1 343322 911031 USGS -- 171 11.54 159 3/13/2002

02S02W11DAC1 343209 911101 USGS 110 164 6.53 157 5/1/2002

03N01W20ABA1 345201 910723 USGS -- 189 46.28 143 3/13/2002

03N02W31ADC1 344958 911447 USGS 95 190 37.90 152 3/13/2002

03N03W36AAA1 345027 911547 USGS 120 176 18.91 157 3/13/2002

04N02W01BCC1 345929 911004 NRCS 100 175 37.00 138 4/17/2002

04N02W05BBB1 345957 911311 NRCS 100 188 13.00 175 4/17/2002

04N02W27CDD3 345540 911150 USGS 181 200 45.15 155 3/13/2002

04N02W28DDD3 345535 911221 USGS 137 192 32.82 159 3/13/2002

04N02W30BBB1 345628 911525 USGS 119 185 14.90 170 3/13/2002

Phillips County

01S01E20DDB1 343529 910058 NRCS 114 185 16.80 168 4/16/2002

01S02E09CBB1 343719 905434 USGS 110 185 9.49 176 3/14/2002

01S02E09CBB1 343719 905434 NRCS 110 185 9.50 176 4/16/2002

01S02E32BCC1 343350 905526 NRCS 120 200 31.60 168 4/16/2002

01S03E02ADD1 343814 904511 NRCS 120 200 14.70 185 4/16/2002

01S03E10ABB1 343741 904634 NRCS 120 205 13.00 192 4/16/2002

01S03E20BDD1 343533 904846 NRCS 120 210 29.00 181 4/16/2002

01S04E05DCD1 343802 904151 NRCS 120 230 43.00 187 4/16/2002

01S04E05DCD1 343802 904151 USGS 120 230 47.20 183 5/1/2002

02S01E28CCB1 342916 910058 USGS 108 174 18.37 156 3/14/2002

02S02E29DDD1 342901 905444 NRCS 125 180 23.50 157 4/16/2002

02S02E33ACC1 342824 905412 NRCS 120 177 22.70 154 4/16/2002

02S03E15ACD1 343110 904621 USGS 112 174 11.49 163 3/14/2002

02S03E34BCD1 342828 904653 NRCS 120 165 18.40 147 4/18/2002

02S04E27AAC1 342932 904001 USGS 175 179 8.00 171 4/18/2002

02S04E27AAC1 342932 904001 NRCS 175 179 8.50 171 4/18/2002

03S02E35DDA1 342256 905130 USGS 50 163 20.71 142 3/14/2002

Appendix 1. Information pertaining to water levels measured in wells completed in the Mississippi River Valley alluvial aquifer in eastern

Arkansas, spring 2002.—Continued

[USGS, U.S. Geological Survey; NRCS, Natural Resources Conservation Service; --, no data; NGVD of 1929; National Geodetic Vertical Datum of 1929;

Horizontal coordinate information is referenced to the North American Datum of 1983 (NAD 83)]

Local well number

Latitude

(degrees,

minutes,

seconds)

Longitude

(degrees,

minutes,

seconds)

Source

of data

Depth of

well

(feet)

Land-surface

datum altitude

(feet above

NGVD of

1929)

Depth to

water

(feet below

land-surface

datum

Waterlevel

altitude

(feet above

NGVD of

1929)

Date of

measurement
44 Status of Water Levels and Selected Water-Quality Conditions in the Mississippi River Valley Alluvial Aquifer in Eastern 

Arkansas, 2002

03S03E04DAA1 342735 904710 USGS 36 171 19.72 151 5/1/2002

03S04E02CAA1 342732 903918 NRCS 120 176 11.00 165 4/18/2002

03S04E02CAA1 342732 903918 USGS 120 176 12.00 164 5/1/2002

04S01E01AAD1 342238 905700 NRCS 120 156 17.00 139 4/18/2002

04S01E14CDD1 342014 905837 NRCS 120 155 12.10 143 4/18/2002

04S01E23CCA1 341931 905853 USGS -- 156 13.45 143 3/14/2002

04S01E29CDC1 341844 910148 NRCS 120 150 12.20 138 4/18/2002

04S02E01DBB1 342220 905053 NRCS -- 163 12.20 151 4/18/2002

05S02E18BDA1 341535 905628 USGS 130 156 17.47 139 3/14/2002

Poinsett County

10N01E02AAA 353205 905654 NRCS 100 235 93.00 142 4/4/2002

10N01E14CC1 352910 905814 USGS 150 231 87.48 144 3/25/2002

10N01E16CCB1 352922 910005 USGS 120 225 70.82 154 3/25/2002

10N01E32CBB1 352657 910053 NRCS 120 222 50.00 172 4/4/2002

10N01E33ACB1 352746 905931 NRCS 153 220 74.00 146 4/4/2002

10N02E13BCC1 352949 905026 NRCS 167 237 99.21 138 3/25/2002

10N02E20BAB1 352906 905418 NRCS 155 237 99.00 138 4/4/2002

10N03E14DAB1 352947 904405 USGS -- 263 114.62 148 3/25/2002

10N03E29BBD1 352820 904805 NRCS 100 236 90.00 146 4/4/2002

10N03E35CDD1 352656 904436 USGS -- 275 121.67 153 3/25/2002

10N04E35BBA1 352745 903831 NRCS 100 212 20.00 192 4/3/2002

10N05E15BDD1 352937 903253 USGS -- 207 11.45 196 3/26/2002

10N07E22AAC1 352847 901935 USGS -- 215 28.20 187 3/26/2002

11N01E17DDC1 353437 910015 NRCS 100 232 76.00 156 4/4/2002

11N01E17DDD1 353437 910013 USGS 100 230 74.60 155 3/25/2002

11N01E26AA1 353340 905653 USGS 140 236 92.03 144 3/25/2002

11N01E34AAA 353256 905759 NRCS 100 229 84.00 145 4/4/2002

11N02E05BDA1 353704 905408 USGS 175 245 91.40 154 3/25/2002

Appendix 1. Information pertaining to water levels measured in wells completed in the Mississippi River Valley alluvial aquifer in eastern

Arkansas, spring 2002.—Continued

[USGS, U.S. Geological Survey; NRCS, Natural Resources Conservation Service; --, no data; NGVD of 1929; National Geodetic Vertical Datum of 1929;

Horizontal coordinate information is referenced to the North American Datum of 1983 (NAD 83)]

Local well number

Latitude

(degrees,

minutes,

seconds)

Longitude

(degrees,

minutes,

seconds)

Source

of data

Depth of

well

(feet)

Land-surface

datum altitude

(feet above

NGVD of

1929)

Depth to

water

(feet below

land-surface

datum

Waterlevel

altitude

(feet above

NGVD of

1929)

Date of

measurement
Appendix 45

11N02E10CBC1 353555 905228 NRCS 170 245 116.00 129 4/4/2002

11N02E26AAB1 353350 905034 USGS 158 241 104.07 137 3/25/2002

11N02E30BBB1 353352 905540 NRCS 100 239 98.00 141 4/4/2002

11N02E34CBA1 353238 905222 NRCS 130 240 94.00 146 4/4/2002

11N03E10DDA1 353546 904457 USGS 145 243 102.00 141 3/25/2002

11N03E18BAB1 353538 904852 USGS 157 243 101.50 142 3/25/2002

11N04E36ABA1 353251 903654 NRCS 100 211 19.00 192 4/3/2002

11N07E18CAB1 353435 902320 USGS 100 217 14.34 203 3/26/2002

12N01E07CDA1 354054 910141 USGS 120 236 52.50 184 3/25/2002

12N01E22DAB1 353922 905809 NRCS 115 235 72.00 163 4/4/2002

12N02E25DCC1 353820 904944 NRCS 145 245 108.00 137 4/4/2002

12N02E34CCC1 353724 905230 NRCS 180 245 109.00 136 4/4/2002

12N03E01CBD1 354154 904329 NRCS 190 250 91.00 159 4/4/2002

12N03E04DAD1 354158 904600 USGS 120 247 100.81 146 3/25/2002

12N03E04DAD1 354158 904600 NRCS 120 247 102.00 145 4/4/2002

12N03E36ACB1 353749 904319 USGS 120 250 95.66 154 3/25/2002

12N04E08CDA 354053 904112 NRCS 100 250 86.00 164 4/4/2002

12N05E16ABA1 354039 903333 NRCS 140 221 10.00 211 4/3/2002

12N05E34ABA1 353805 903230 USGS 100 215 9.50 206 3/26/2002

12N07E04BAA1 354202 902060 USGS 60 223 4.24 219 3/26/2002

Prairie County

01N06W05CCB1 344353 914049 USGS 155 220 116.15 104 3/12/2002

01S04W28BBC1 343529 912650 NRCS 180 206 99.50 107 4/18/2002

01S04W28BDB1 343523 912630 USGS 112 205 83.17 122 3/12/2002

01S05W14BBC1 343722 913109 USGS 118 211 108.14 103 3/12/2002

01S05W31DDA1 343417 913432 USGS 120 206 95.34 111 3/12/2002

02N04W02BCB1 344916 912419 USGS 140 188 20.65 167 3/11/2002

02N04W32CCB1 344436 912738 USGS -- 221 84.08 137 3/12/2002

Appendix 1. Information pertaining to water levels measured in wells completed in the Mississippi River Valley alluvial aquifer in eastern

Arkansas, spring 2002.—Continued

[USGS, U.S. Geological Survey; NRCS, Natural Resources Conservation Service; --, no data; NGVD of 1929; National Geodetic Vertical Datum of 1929;

Horizontal coordinate information is referenced to the North American Datum of 1983 (NAD 83)]

Local well number

Latitude

(degrees,

minutes,

seconds)

Longitude

(degrees,

minutes,

seconds)

Source

of data

Depth of

well

(feet)

Land-surface

datum altitude

(feet above

NGVD of

1929)

Depth to

water

(feet below

land-surface

datum

Waterlevel

altitude

(feet above

NGVD of

1929)

Date of

measurement
46 Status of Water Levels and Selected Water-Quality Conditions in the Mississippi River Valley Alluvial Aquifer in Eastern 

Arkansas, 2002

02N05W06BAB1 344958 913421 USGS 145 221 88.40 133 3/11/2002

02N05W13AAB1 344805 912854 USGS 130 223 76.20 147 3/12/2002

02N05W29DDB2 344545 913309 USGS 135 228 116.89 111 3/12/2002

02N06W17ABB1 344809 913959 USGS 180 235 122.18 113 3/12/2002

02S06W14BBB1 343213 913729 USGS 105 201 75.65 125 3/12/2002

03N04W03AAC1 345439 912424 USGS 106 187 25.92 161 3/11/2002

03N05W03BDD2 345444 913115 USGS 110 207 64.12 143 3/11/2002

03N06W01BCB1 345455 913601 USGS 115 216 77.39 139 3/11/2002

03N06W19BDD1 345207 914110 USGS 105 221 83.73 137 3/11/2002

04N04W07ADC1 345850 912733 USGS 110 195 24.52 170 3/11/2002

04N05W07CDC1 345043 913441 USGS -- 212 74.33 138 3/11/2002

04N05W31DDC1 345514 913406 USGS 104 206 75.18 131 3/11/2002

04N06W05CCC1 345934 914018 USGS 100 206 61.02 145 3/11/2002

04N07W03DCB1 345942 914412 USGS 100 255 85.93 169 3/11/2002

04N07W20DDB1 345709 914607 USGS 160 255 103.11 152 4/16/2002

04N07W28BBA1 345701 914545 USGS 110 258 93.08 165 3/11/2002

05N05W14DCD1 350252 913034 USGS -- 205 36.00 169 3/11/2002

05N05W25BAA1 350153 912949 NRCS 100 187 17.20 170 4/18/2002

05N05W28DDA1 350119 913228 NRCS 85 191 22.50 169 4/18/2002

Pulaski County

01S10W29CC1 343538 920708 USGS 100 239 17.13 222 3/5/2002

02S10W14DC1 343205 920334 USGS 60 225 25.97 199 3/5/2002

02S10W16CCA1 343217 920549 USGS -- 231 21.98 209 3/5/2002

Randolph County

18N01E13BAB1 361230 905551 NRCS 100 266 15.40 251 4/17/2002

18N01E28AAD1 361040 905820 NRCS 120 265 15.70 249 4/18/2002

18N01E34AAC1 360943 905729 USGS -- 266 16.63 249 3/28/2002

18N02E03DAD1 361336 905043 NRCS 120 280 32.40 248 4/18/2002

Appendix 1. Information pertaining to water levels measured in wells completed in the Mississippi River Valley alluvial aquifer in eastern

Arkansas, spring 2002.—Continued

[USGS, U.S. Geological Survey; NRCS, Natural Resources Conservation Service; --, no data; NGVD of 1929; National Geodetic Vertical Datum of 1929;

Horizontal coordinate information is referenced to the North American Datum of 1983 (NAD 83)]

Local well number

Latitude

(degrees,

minutes,

seconds)

Longitude

(degrees,

minutes,

seconds)

Source

of data

Depth of

well

(feet)

Land-surface

datum altitude

(feet above

NGVD of

1929)

Depth to

water

(feet below

land-surface

datum

Waterlevel

altitude

(feet above

NGVD of

1929)

Date of

measurement
Appendix 47

18N02E17CBB1 361204 905356 NRCS -- 265 16.10 249 4/18/2002

18N02E20BDA1 361125 905332 NRCS 110 274 32.50 242 4/18/2002

18N02E22DCD1 361046 905105 USGS 110 273 36.34 237 3/28/2002

18N02E34BCC1 360933 905150 NRCS 100 265 56.00 209 4/18/2002

19N02E04AAB1 361930 905145 NRCS 80 268 6.50 262 4/17/2002

19N02E09ABD1 361826 905157 NRCS 80 266 1.40 265 4/17/2002

19N02E22DAB1 361622 905049 NRCS 90 266 0.30 266 4/17/2002

20N02E01ADD1 362424 904811 USGS 65 280 9.44 271 3/28/2002

20N02E12BAA1 362352 904848 NRCS 60 281 4.30 277 4/17/2002

20N02E14DAB1 362232 904930 NRCS 100 274 8.90 265 4/17/2002

20N02E21CDD1 362117 905107 NRCS 110 270 6.20 264 4/17/2002

20N03E06DAD1 362406 904707 NRCS 65 281 6.50 275 4/17/2002

20N03E07AAD1 362424 904811 NRCS 65 281 10.70 270 4/17/2002

20N03E28BA1 362114 904538 USGS -- 276 11.75 264 3/28/2002

20N03E33CCA1 361941 904552 NRCS -- 287 21.70 265 4/17/2002

St. Francis County

04N01E05AAA1 345952 910054 NRCS 140 207 68.00 139 4/16/2002

04N01E13ADA1 345755 905638 USGS -- 206 56.87 149 3/21/2002

04N01W20BBB1 345716 910759 NRCS 140 200 57.00 143 4/16/2002

04N01W25DBD1 345549 910303 NRCS 140 199 68.00 131 4/16/2002

04N01W28CDD1 345535 910634 USGS -- 208 68.00 140 4/1/2002

04N02E03DDD3 345848 905219 USGS 151 210 42.26 168 4/1/2002

04N02E16ACD1 345733 905341 NRCS 140 209 49.00 160 4/16/2002

04N02E19BBB1 345701 905633 USGS 72 209 56.08 153 4/1/2002

04N02E27AAA1 345604 905220 NRCS 140 211 46.00 165 4/16/2002

04N03E21DAD1 345623 904655 USGS -- 236 59.23 177 4/1/2002

04N04E15ABA1 345752 903948 NRCS 120 201 32.00 169 4/18/2002

04N05E22BBB1 345651 903357 USGS -- 200 28.48 172 3/22/2002

Appendix 1. Information pertaining to water levels measured in wells completed in the Mississippi River Valley alluvial aquifer in eastern

Arkansas, spring 2002.—Continued

[USGS, U.S. Geological Survey; NRCS, Natural Resources Conservation Service; --, no data; NGVD of 1929; National Geodetic Vertical Datum of 1929;

Horizontal coordinate information is referenced to the North American Datum of 1983 (NAD 83)]

Local well number

Latitude

(degrees,

minutes,

seconds)

Longitude

(degrees,

minutes,

seconds)

Source

of data

Depth of

well

(feet)

Land-surface

datum altitude

(feet above

NGVD of

1929)

Depth to

water

(feet below

land-surface

datum

Waterlevel

altitude

(feet above

NGVD of

1929)

Date of

measurement
48 Status of Water Levels and Selected Water-Quality Conditions in the Mississippi River Valley Alluvial Aquifer in Eastern 

Arkansas, 2002

05N01E06CDA1 350437 910218 NRCS -- 211 67.00 144 4/16/2002

05N01E15BCB1 350303 905942 USGS 94 209 61.34 148 4/1/2002

05N01E27BBA1 350136 905929 USGS -- 209 63.63 145 3/21/2002

05N02E20ADC1 350157 905437 USGS 79 211 53.57 157 4/1/2002

05N03E20AAA2 350214 904801 USGS 153 250 104.55 145 3/21/2002

05N05E19DCA1 350128 903630 USGS 110 203 34.23 169 3/22/2002

05N05E21CAB1 350144 903448 NRCS 140 203 43.00 160 4/18/2002

05N05E33BCC1 350004 903506 NRCS 120 196 28.00 168 4/18/2002

05N06E05BBB1 350508 902922 NRCS 120 195 34.00 161 4/18/2002

05N06E34CAB1 350026 902657 USGS 110 200 28.05 172 3/22/2002

06N01E33ACA1 350559 905943 USGS 140 211 64.42 147 4/1/2002

06N01E33ACA2 350552 905942 USGS -- 211 64.42 147 4/1/2002

06N02E13DCA1 350813 905003 USGS -- 231 73.11 158 4/1/2002

06N02E15BDD1 350842 905247 USGS 75 215 52.23 162 4/1/2002

06N02E16CCC1 350804 905403 NRCS 120 216 63.00 153 4/16/2002

06N02E24AAA1 350755 905002 USGS 147 232 70.26 162 4/1/2002

06N03E17CAA1 350822 904810 NRCS -- 258 101.00 157 4/18/2002

06N04E36CCD1 350512 903744 NRCS 120 200 35.00 165 4/18/2002

06N05E22ACC1 350723 903252 USGS -- 200 46.70 153 4/1/2002

06N06E20ABB2 350747 902841 USGS 150 200 34.00 166 3/21/2002

White County

05N07W09AAA1 350447 914441 USGS 30 205 19.10 186 4/1/2002

05N07W10CCC1 350400 914436 USGS 80 203 7.68 195 4/1/2002

06N06W04BAA1 351047 913910 USGS 70 220 37.97 182 4/1/2002

06N06W04BAD1 351037 913903 NRCS -- 215 41.00 174 4/16/2002

06N06W13DBB1 350918 913552 NRCS -- 213 48.50 165 4/16/2002

06N06W18BBC1 350851 914152 USGS -- 210 19.00 191 4/1/2002

06N06W18BCA1 350835 914150 NRCS -- 210 21.50 189 4/16/2002

Appendix 1. Information pertaining to water levels measured in wells completed in the Mississippi River Valley alluvial aquifer in eastern

Arkansas, spring 2002.—Continued

[USGS, U.S. Geological Survey; NRCS, Natural Resources Conservation Service; --, no data; NGVD of 1929; National Geodetic Vertical Datum of 1929;

Horizontal coordinate information is referenced to the North American Datum of 1983 (NAD 83)]

Local well number

Latitude

(degrees,

minutes,

seconds)

Longitude

(degrees,

minutes,

seconds)

Source

of data

Depth of

well

(feet)

Land-surface

datum altitude

(feet above

NGVD of

1929)

Depth to

water

(feet below

land-surface

datum

Waterlevel

altitude

(feet above

NGVD of

1929)

Date of

measurement
Appendix 49

06N06W34AAB1 350624 913754 USGS -- 213 59.86 153 4/1/2002

06N07W17DCC1 350822 914635 USGS 90 217 13.94 203 4/1/2002

06N08W13ABA1 350908 914824 USGS 60 228 8.20 220 4/1/2002

06N08W26DDB1 350640 914931 USGS 89 230 12.62 217 4/1/2002

07N05W01AAA1 351553 912858 USGS -- 205 15.00 190 3/29/2002

07N05W32BAB1 351137 913406 USGS 80 214 27.76 186 4/1/2002

07N06W19CAB1 351259 914142 USGS 38 224 9.93 214 5/2/2002

08N04W06CCB1 352028 912847 USGS 74 214 16.02 198 3/29/2002

08N05W32CBC1 351616 913417 USGS -- 199 0.60 198 3/29/2002

Woodruff County

04N03W03AB1 350021 911820 USGS 100 185 12.13 173 3/20/2002

05N01W13CDC1 350244 910331 NRCS 135 210 71.60 138 3/25/2002

05N01W31CCC1 350106 910900 NRCS 140 210 57.30 153 3/25/2002

05N02W20DCB1 350208 911356 USGS -- 192 13.17 179 3/20/2002

05N03W25DDB1 350133 911531 NRCS 120 190 12.70 177 3/25/2002

05N03W31BAC1 350110 912127 NRCS 120 178 0.80 177 3/25/2002

05N04W12DBA1 350427 912211 USGS 92 186 3.11 183 3/20/2002

06N01W06BAB1 351048 910835 USGS -- 202 32.80 169 3/20/2002

06N02W19AAA1 350802 911419 NRCS 130 225 46.50 179 3/25/2002

06N03W15BAB1 350903 911807 USGS 111 189 4.38 184 3/20/2002

06N03W31BCB1 350623 912144 USGS -- 185 0.98 184 3/20/2002

07N01W04ACB1 351541 910626 NRCS 125 225 60.00 165 3/26/2002

07N02W16DBB1 351353 911225 NRCS 110 206 23.70 182 3/25/2002

07N03W06BAC1 351607 912109 NRCS 100 211 25.15 186 3/27/2002

07N03W19AAA1 351335 912025 USGS 100 203 11.75 191 3/20/2002

07N03W31BBA1 351152 912103 NRCS 120 190 9.40 181 3/27/2002

08N01W06DDD1 352028 910747 USGS -- 218 41.90 176 3/20/2002

08N01W10AAA1 352018 910431 NRCS 160 211 57.20 154 3/26/2002

Appendix 1. Information pertaining to water levels measured in wells completed in the Mississippi River Valley alluvial aquifer in eastern

Arkansas, spring 2002.—Continued

[USGS, U.S. Geological Survey; NRCS, Natural Resources Conservation Service; --, no data; NGVD of 1929; National Geodetic Vertical Datum of 1929;

Horizontal coordinate information is referenced to the North American Datum of 1983 (NAD 83)]

Local well number

Latitude

(degrees,

minutes,

seconds)

Longitude

(degrees,

minutes,

seconds)

Source

of data

Depth of

well

(feet)

Land-surface

datum altitude

(feet above

NGVD of

1929)

Depth to

water

(feet below

land-surface

datum

Waterlevel

altitude

(feet above

NGVD of

1929)

Date of

measurement
50 Status of Water Levels and Selected Water-Quality Conditions in the Mississippi River Valley Alluvial Aquifer in Eastern 

Arkansas, 2002

08N02W27DDB1 351711 911107 NRCS 60 213 27.00 186 3/26/2002

08N02W31DDD1 351611 911411 USGS 40 195 2.51 192 3/20/2002

08N03W31AAD1 351655 912028 USGS 110 212 24.29 188 3/20/2002

08N04W27AAA1 351757 912341 USGS -- 200 3.21 197 3/20/2002

09N03W28ABB1 352310 911845 NRCS 120 220 19.90 200 3/26/2002

09N03W29AAD1 352258 911921 USGS -- 220 21.42 199 3/20/2002

09N03W32ACA1 352205 911936 NRCS 120 217 19.00 198 3/26/2002

Appendix 1. Information pertaining to water levels measured in wells completed in the Mississippi River Valley alluvial aquifer in eastern

Arkansas, spring 2002.—Continued

[USGS, U.S. Geological Survey; NRCS, Natural Resources Conservation Service; --, no data; NGVD of 1929; National Geodetic Vertical Datum of 1929;

Horizontal coordinate information is referenced to the North American Datum of 1983 (NAD 83)]

Local well number

Latitude

(degrees,

minutes,

seconds)

Longitude

(degrees,

minutes,

seconds)

Source

of data

Depth of

well

(feet)

Land-surface

datum altitude

(feet above

NGVD of

1929)

Depth to

water

(feet below

land-surface

datum

Waterlevel

altitude

(feet above

NGVD of

1929)

Date of

measurement
Appendix 51

Appendix 2. Specific conductance and temperature data from wells completed in the Mississippi River Valley alluvial aquifer in eastern 

Arkansas, summer 2002.

[μS/cm, microsiemens per centimeter at 25 degrees Celsius; mg/L, milligrams per liter; --, no data]

Local well number

Latitude

(degrees)

Longitude

(degrees)

Well depth

(feet) Date

Specific

conductance

(μS/cm)

Temperature

(degrees Celsius)

Arkansas County

02S04W14CD1 343100 912445 130 6/24/2002 757 18.3

04S03W17ADD1 342102 912058 -- 6/24/2002 655 18.4

04S06W16BD1 342130 914000 -- 6/25/2002 340 18.1

05S04W07CCC1 341555 912932 120 6/24/2002 844 18.5

Ashley County

16S06W27BAB1 331729 914240 115 6/17/2002 559 19.9

17S07W05CDD1 331502 915050 130 6/17/2002 692 19.6

18S08W01AAB1 331015 915225 128 6/17/2002 592 20.5

Chicot County

13S03W35BAC1 333154 912246 90 6/17/2002 438 18.7

17S01W06BCC1 331501 911505 100 6/17/2002 806 19.1

17S03W04ADA1 331510 912427 -- 6/17/2002 2,730 19.8

Clay County

19N08E02ABB1 361859 901104 -- 6/20/2002 292 16.2

19N08E28BB1 361519 901318 105 6/20/2002 275 16.0

20N08E24DDA1 362057 900934 110 6/20/2002 284 16.2

21N04E34DDC1 362445 903729 104 6/20/2002 457 16.2

Craighead County

13N03E29AAA1 354403 904713 122 6/19/2002 801 17.1

15N06E19AAB1 355517 902857 110 6/19/2002 401 17.2

16N07E32ADD1 355813 902138 100 6/19/2002 302 17.4

Crittenden County

06N07E13BAA1 350850 901808 130 6/19/2002 478 17.6

07N07E31CCC1 351042 902359 110 6/19/2002 443 17.3

Cross County

07N01E05CDA1 351518 910049 140 6/19/2002 630 17.3

09N01E33BBA1 352204 905959 120 6/19/2002 453 17.4

09N05E32BDB1 352151 903512 -- 6/19/2002 410 17.6

Desha County

09S04W06BCA1 335756 913243 -- 6/18/2002 667 18.8

10S03W26CAA1 334806 912145 96 6/18/2002 684 20.1
52 Status of Water Levels and Selected Water-Quality Conditions in the Mississippi River Valley Alluvial Aquifer in Eastern 

Arkansas, 2002

Drew County

11S04W08DBA1 334532 913136 70 6/17/2002 399 19.1

14S04W27AA1 332734 912925 100 6/17/2002 629 19.1

Greene County

16N06E28ABB1 355938 902657 -- 6/20/2002 553 16.4

Jackson County

09N02W32CBB1 352152 911348 117 6/20/2002 275 17.2

10N02W29ABB1 352829 911312 -- 6/20/2002 359 16.8

14N01W09AAA1 355220 910515 -- 6/20/2002 366 16.8

Jefferson County

03S07W16AAA1 342714 914538 102 6/24/2002 727 18.3

03S09W31DDA1 342415 920049 -- 6/24/2002 644 18.0

04S08W13DCB1 342123 914926 110 6/24/2002 497 18.3

06S06W23AAD1 341007 913712 107 6/24/2002 555 18.2

Lawrence County

16N02E05BA1 360326 905352 100 6/20/2002 566 16.6

Lee County

01N03E23CCC1 344025 904604 120 6/18/2002 596 18.4

03N03E32CAB1 344933 904926 116 6/18/2002 512 18.0

Lincoln County

08S04W19CC1 340021 913205 100 6/18/2002 1,250 18.3

09S06W04BCD1 335821 914346 63 6/18/2002 374 18.4

09S07W01DC1 335714 914637 100 6/18/2002 337 18.7

Lonoke County

01N07W29BBB1 344114 914720 -- 6/25/2002 418 18.2

02N07W02BBA1 344957 914338 -- 6/25/2002 319 18.1

02S08W13BBB1 343232 914935 -- 6/25/2002 608 17.9

Mississippi County

12N08E08BCB1 354047 901559 120 6/19/2002 478 17.3

Monroe County

01N04W33BB2 343958 912646 140 6/21/2002 545 17.7

01S04W01BAB1 343906 912317 160 6/21/2002 519 17.5

Appendix 2. Specific conductance and temperature data from wells completed in the Mississippi River Valley alluvial aquifer in eastern 

Arkansas, summer 2002.—Continued

[μS/cm, microsiemens per centimeter at 25 degrees Celsius; mg/L, milligrams per liter; --, no data]

Local well number

Latitude

(degrees)

Longitude

(degrees)

Well depth

(feet) Date

Specific

conductance

(μS/cm)

Temperature

(degrees Celsius)
Appendix 53

03N02W31ADC1 344958 911447 95 6/21/2002 357 17.5

03N03W36AAA1 345027 911547 120 6/21/2002 673 17.3

Phillips County

02S01E28CCB1 342916 910058 108 6/18/2002 452 18.1

Poinsett County

10N03E14DAB1 352947 904405 -- 6/19/2002 590 17.6

10N03E35CDD1 352656 904436 -- 6/19/2002 509 17.3

11N02E26AAB1 353350 905034 158 6/19/2002 730 17.3

11N07E18CAB1 353435 902320 100 6/19/2002 481 17.3

Prairie County

01S04W28BD1 343521 912624 149 6/21/2002 767 18.2

02N05W06BAB1 344958 913421 145 6/21/2002 916 18.6

02N05W29DDB2 344545 913309 135 6/21/2002 586 18.1

Pulaski County

01S10W07BDC1 343820 920712 -- 6/24/2002 661 18.1

Randolph County

18N01E34AAC1 360943 905729 -- 6/20/2002 262 16.4

St. Francis County

04N01E13DDA1 345708 905638 -- 6/18/2002 814 18.0

04N01W28CDD1 345535 910634 -- 6/18/2002 730 18.4

06N02E13DCA1 350813 905003 -- 6/19/2002 694 18.0

White County

06N06W34AAB1 350624 913754 -- 6/20/2002 692 16.8

Woodruff County

05N04W12DBA1 350427 912211 92 6/20/2002 263 17.1

08N03W31AAD1 351655 912028 110 6/20/2002 453 16.8

Appendix 2. Specific conductance and temperature data from wells completed in the Mississippi River Valley alluvial aquifer in eastern 

Arkansas, summer 2002.—Continued

[μS/cm, microsiemens per centimeter at 25 degrees Celsius; mg/L, milligrams per liter; --, no data]

Local well number

Latitude

(degrees)

Longitude

(degrees)

Well depth

(feet) Date

Specific

conductance

(μS/cm)

Temperature

(degrees Celsius)
CLAY

GREENE

MISSISSIPPI

CRAIGHEAD

JACKSON

POINSETT

CROSS

CRITTENDEN

WHITE

WOODRUFF

ST. FRANCIS

LEE

PRAIRIE

MONROE

PULASKI

LONOKE

JEFFERSON

ARKANSAS PHILLIPS

LINCOLN

DESHA

DREW

CHICOT

ASHLEY

INDEPENDENCE

LAWRENCE

RANDOLPH

Crowleys

Ridge

C

r

o

w

l

e

y

s

Ri

d

ge

180

190

16

0

190

180

150

140

210

170

200

120

220

100

230

90

250

240

240

80

260

270

110

90

220

100

220

210

220

180

170

200

160

190

140

130

170

150

220

90

220

130

210

240

160

100

280

19

0

120

130

150

130

17

0

140

210

180

170

170

270

100

230

200

280

100

190

150

250

2

0

0

14

0

110

260

90

230

250

240

140

Z

Y

X

W

V

U

T

S

R

Q

P

O

N

M

L

K

J

I

H

G

F

E

D

C

B

A

BB

AA

160

150

160

190

180

170

140

15

1

0

60

100

210

Base from U.S. Geological Survey

digital data, 1:500,000

92°

90°

34°

36°

EXPLANATION

CONES OF DEPRESSION AND OTHER AREAS

OF REDUCED WATER LEVEL

POTENTIOMETRIC CONTOUR--Shows altitude

at which water level would have stood in tightly

cased wells. Dashed where approximately located.

Hachures indicate depression. Contour interval

10 feet. Datum is National Geodetic Vertical Datum

of 1929. Measurements made during the spring

of 2002

WELL COMPLETED IN ALLUVIAL AQUIFER--Letter,

when present, corresponds to hydrograph

EXTENT OF STUDY AREA

DIRECTION OF GROUND-WATER FLOW

NOTE: The potentiometric contours are generalized

to portray synoptically the head in a dynamic hydrologic

system, not taking into account the variation in well

depth, non-simultaneous measurements of water level,

or various effects of pumping, and may not conform

exactly with individual measurements of water level.

POTENTIOMETRIC SURFACE OF THE MISSISSIPPI RIVER VALLEY

ALLUVIAL AQUIFER, SPRING 2002

T.B. REED

2004

140

U.S. DEPARTMENT OF THE INTERIOR

U.S. GEOLOGICAL SURVEY

Prepared in cooperation with the

ARKANSAS SOIL AND WATER CONSERVATION COMMISSION and the

ARKANSAS GEOLOGICAL COMMISSION

SCIENTIFIC INVESTIGATIONS REPORT 2004-5129

Potentiometric surface of the alluvial aquifer--PLATE 1

Reed, T.B., 2004, Status of water levels and selected water-quality conditions

in the Mississippi River Valley alluvial aquifer in eastern Arkansas, 2002

0 10 20 30 40 MILES

0 10 20 30 40 KILOMETERS

A R K A N S A S

LOCATION OF STUDY AREA
CLAY

GREENE

MISSISSIPPI

CRAIGHEAD

JACKSON

POINSETT

CROSS

CRITTENDEN

WHITE

WOODRUFF

ST. FRANCIS

LEE

PRAIRIE

MONROE

PULASKI

LONOKE

JEFFERSON

ARKANSAS

PHILLIPS

LINCOLN

DESHA

DREW

ASHLEY CHICOT

INDEPENDENCE

LAWRENCE

RANDOLPH

0

0

0

2 4

2

0

1

0

2

1

2

1

6

5

6

7

1

3

1

0

0 7 1

0

3

4

2

0

1

0

2

3

4 2

3 1

0

3

0 2 0 1

2 0

3 0

1

1

0

0 0

2

1 4

0

0 5

7 3 9

1

8

0

1

1

3 3

4 0

2 0

1

1 2

3

5 3

2

2

3

0 5

1

2

1

2

1

2

3

1 2

0

0 0

2

4 0 6

0

2

2

1

2 1

0

0

0

2 6

9

4

0

0

1 4

2

7

-2

-9

-4 -3

-1 -6

-4 -9

-1

-3

-4

-4

-5

-5

-7

-5-1 -8

-1

-1

-1

-1

-3

-1

-2

-3

-4

-6 -5 -6

-5

-6

-6 -9 -5

-6

-2 -2

-8 -5

-5

-4

-2

-3

-2

-5 -4 -8

-2 -3

-5

-1

-3

-7 -3

-4

-5

-1

-1

-6

-5 -2

-3

-2

-2

10

-4

-3

-2

-5 -1 -5 -5

-6 -8 -5 -3

-3 -3 -5 -4

-7 -1

-6

-6

-5 -2 -5

-8 -7 -5 -6

-6

-3

-3

-3 -3

-3

-5 -7

-1 -2

-2

-1

-4 -1

-4 -2

-2

-1

-5 -4

-3

-2 -6

-3

-5

-5 -3

-5

-4 -2 -5 -2 -8

-3 -4 -8 -6

-7

-8

-5

-4

-5

-3

-3

-6

-4 -4

-6

-2 -9

-2

-9 -7

-5 -6

-3 -7

-4

-7 -7

-5

-8

-4 -9

-5

-4

-6

-7 -5

-8

-9

-5

-7

-6

-7

-1

-2

-7 -6

-4

-6

-4

-7

-7

-1

-6 -8

-9

-8 -2

-1 -8

-6 -4 -9

-8

-6

-6 -5

-6

-5

-4 -3

-3

-4

-3

-5

-4 -3

-3 -8

-4

-3

-4

-4

-4

-1 -3

-8

-3

-1 -9 -1

-2 -7

-3

-7

-6 -6 -5 -6

-4

-3

-1

-5

-8 -6

-9

-6 -3

-4

-6

-4 -1

-1

-6

-6

-5

-5

-7 -2

-2 -9

-3

-1

-3

-4

-4

-6

-7

-5

-3 -3

-9

-2

-1

-2

-1

-3

-2

-7 -6

-3 -1

-5

-7 -5

-5 -6

-8

-6 -5

-5

-8 -2

-1

-6

-3

-9 -7

-3 -5

-9 -9

-7 -5 -8

-6

-3 -3

-8-6

-6-9

-6

-3

-3

-6

-3 -3

-6

-9

-7 -6

-5

-3

-3

-4

-5

-2

-3

-4

-6

-5

-1 -5

-1

-1

-5

-8 -5

-6

-6

-1 -5

-1

-3 -1

-5

-3

-4

-8

-6 -4

-6 -3

-5 -4 -6

-8

-1

-3

-4

-5 -6

-3

-5

-5

-3 -8

-4

-3 -3

-3

-1 -2 -6

-4

-3

-2

-2

-2 -7

-2

-9

-3

-4 -2

-4 -8

-7

-2

-4

-2

-4

17

-3 -2

-5

-3

-6

-7

-4

-2 -4

-2 -3 -1

-1 -2

-3

11

-1

-4

-3

-14

-14

-17

-23

-23

-14

-14

-11

-10

-11

-13

-10

-16

-36

-10 -12

-13

-10

-11

-13

-10

-10

-10 -13

-12

-11 -11

-10

-11

-11

-11

-11

-29

-12

-20

-11

-16

92°

90°

34°

36°

-36 to -30

-30 to -25

-25 to -20

-20 to -15

-15 to -10

-10 to -5

-5 to 0

0.01 to 5

5 to 10

10 to 15

15 to 20

20 to 25

25 to 30

AREAS WHERE VALUES WERE

NOT CALCULATED

EXPLANATION

Well control point with

difference in water level

altitude from 1998 to 2002,

in feet

Difference in potentiometric

surface from 1998 to 2002,

in feet

DECLINE IN POTENTIOMETRIC

SURFACE

RISE IN POTENTIOMETRIC

SURFACE

Prepared in cooperation with the

ARKANSAS SOIL AND WATER CONSERVATION COMMISSION and the

ARKANSAS GEOLOGICAL COMMISSION

POTENTIOMETRIC DIFFERENCE FOR THE MISSISSIPPI RIVER VALLEY

ALLUVIAL AQUIFER FROM 1998 TO 2002

T.B.REED

2004

U.S. DEPARTMENT OF THE INTERIOR

U.S. GEOLOGICAL SURVEY

SCIENTIFIC INVESTIGATIONS REPORT 2004-5129

Potentiometric difference for the alluvial aquifer--Plate 2 Status of water levels and selected water-quality in the

Mississippi River Valley alluvial aquifer in eastern Arkansas, 2002

0 10 20 30 40 MILES

0 10 20 30 40 KILOMETERS

Base from U.S. Geological Survey

digital data, 1:500,000
Reed, T.B.—STATUS OF WATER LEVELS AND SELECTED WATER-QUALITY CONDITIONS IN THE MISSISSIPPI RIVER VALLEY ALLUVIAL 

AQUIFER IN EASTERN ARKANSAS, 2002—U.S. Geological Survey Scientific Investigations Report 2004-5129