Printed on recycled paper

Difference in Water Level from 2008 to 2012

in the Mississippi River Valley Alluvial Aquifer

By

T.P. Schrader

2015

Western limit of the Mississippi River Valley alluvial aquifer

Well completed in Mississippi River Valley alluvial aquifer—Value 

 is rise in water-level measurements from 2008 to 2012, in feet. 

 Symbols are scaled to value. Smallest positive value increasing 

 to largest positive value

Well completed in Mississippi River Valley alluvial aquifer—Value 

 is decline in water-level measurements from 2008 to 2012, in feet. 

 Symbols are scaled to value. Smallest negative value increasing 

 to largest negative value

Well completed in Mississippi River Valley alluvial aquifer—No 

 difference in water-level measurements from 2008 to 2012, in feet

EXPLANATION

! 0.0

-10.5

12.5

0 10 20 30 40 MILES

0 10 20 30 40 KILOMETERS

Base from U.S. Geological Survey digital data, 1:500,000

Universal Transverse Mercator projection, zone 15

North American Datum of 1927

Prepared in cooperation with the

Arkansas Natural Resources Commission 

and the

Arkansas Geological Survey

U.S. Department of the Interior

U.S. Geological Survey

Scientific Investigations Report 2015–5059

Difference in water level, 2008–12, in the alluvial aquifer—PLATE 2

Schrader, T.P., 2015, Water levels and water quality in the

 Mississippi River Valley alluvial aquifer

 in eastern Arkansas, 2012

TENNESSEE

MISSISSIPPI

ARKANSAS

LOUISIANA

MISSOURI

ARKANSAS

ARKANSAS

Study area

Crowleys Ridge

Crowleys

Ridge

Crowleys

Ridge

CLAY

GREENE

MISSISSIPPI

CRAIGHEAD

JACKSON

POINSETT

CROSS

WHITE CRITTENDEN

WOODRUFF

ST. FRANCIS

LEE

PRAIRIE

MONROE

PULASKI

LONOKE

JEFFERSON

ARKANSAS

PHILLIPS

LINCOLN DESHA

DREW

CHICOT

ASHLEY

INDEPENDENCE

LAWRENCE

RANDOLPH

MISSISSIPPI

RIVER

RIVER

MISSISSIPPI

White River

Arkansas River

Inset

-2.0 -6.1

-5.2

-1.2

-0.2

-0.2

-3.0

-0.5 -2.1 -2.7 -3.3 -2.4

-5.4

-2.0

-1.4

-11.8

-15.0

-27.4

-12.0

-5.3

-4.5

-1.3

-0.9

8.9

0.1

0.1

0.2

-0.2

92°

91°

90°

36°

35°

34°

92°

91°

90°

36°

35°

34°

33° 33°

!

!

!

!

!

!

!

!

!

!

!

!!

!

!

!

! ! 0.0 0.0

0.0

0.0

0.0

0.00.0

0.0

0.0

0.0

0.0

0.1 0.0

0.0

0.0

0.0

0.0

0.0

0.0

-3.0

-0.3

-3.0

-1.2 -1.6

-1.2

-1.4 -1.1-1.0 -0.8

-2.4

-1.7

-0.5

-1.7

-0.3

-0.5

-0.2

-3.8 -1.7 -3.1 -2.1

-2.5

-3.0

-2.1 -1.5

-1.3

-1.7

-1.2

-8.2

-1.4

-0.3

-0.3

-4.4 -3.2

-1.8

-1.2

-1.7

-0.9

-1.6

-4.7

-2.3

-4.5

-4.4

-6.3

-6.0

-6.5-8.0 -4.5

-2.0

-4.6

-2.5 -0.5

-6.7 -3.2 -2.0 -3.0

-3.5

-2.4 -4.3 -7.0

-0.1

-2.1

-5.0 -9.0

-1.7

-4.0

-3.1

-5.0 -4.1

-5.5

-3.3 -3.9

-2.0

-1.5

-4.6

-1.0

-3.0

-3.0-2.0

-0.5

-1.5

-1.6-1.0

-7.4

-1.9 -2.5

-4.4 -7.5

-0.7

-4.9 -3.4

-5.8

-3.4

-0.9

-4.4

-1.2

-4.4 -5.0

-1.0

-6.0

-2.0 -4.0 -9.1

-1.0

-0.3 -2.1 -1.5

-0.6

-2.0

-0.6

-0.9 -8.0

-0.6

-1.0

-1.9

-0.5

-2.0 -2.8 -2.5

-4.0 -2.6

-0.4

-5.0

-1.2

-1.5

-2.1

-1.3

-6.5

-1.0

-4.0

-4.3

-0.5

-2.9

-2.4-2.4 -0.7

-3.6

-1.6

-0.4 -0.4

-1.9

-8.3

-1.8

-2.5

-9.9

-2.4

-1.6

-1.5

-2.3

-4.1

-3.0

-1.9 -2.5

-1.4

-5.2 -7.5

-2.5

-5.2

-8.9 -7.4

-3.3 -3.2

-5.0

-3.0

-1.0

-1.2 -1.1

-0.4

-4.4

-1.5

-1.2

-2.2

-2.7

-1.3 -1.3

-4.0

-5.0 -3.7

-1.5

-0.6

-2.2

-1.0 -5.0 -5.0

-3.5

-2.0

-3.5

-4.0

-6.0

-2.0 -3.5 -4.0

-3.5

-2.0 -0.5 -0.6

-1.0 -1.5

-1.7 -1.6

-3.7-1.0

-0.8

-0.6

-0.4 -4.4 -1.2

-4.4

-3.1 -1.0

-4.2

-1.5 -6.8

-4.6

-5.4

-4.0

-1.1

-3.0

-2.9

-0.5

-1.2

-1.5

-0.9

-1.1

-5.6

-0.6

-3.0

-2.1

-0.5 -2.3 -4.2

-0.4 -2.0 -5.8

-1.4

-2.4

-3.3-1.6

-1.1 -6.1

-2.4

-0.9

-3.5 -2.2

-3.6

-3.0

-0.2

-0.9

-0.6

-1.6

-1.1

-3.6 -4.4

-3.3 -3.1

-4.5

-1.3

-2.4

-4.0 -1.2

-5.6

-0.9

-1.0

-1.0

-5.2

-4.1

-1.8 -4.5

-1.2

-3.0 -0.6

-0.8

-3.6

-0.2

-1.6

-0.2

-1.8 -1.3 -4.2

-5.1

-4.3

-0.2 -0.1

-11.7

-22.0

-14.9

-18.0

-10.1

-15.0

-10.5

-19.5

-21.8

-16.4

-11.5

-14.8

-10.0

-12.6

-10.6

-15.9

1.9

1.0 2.6

4.0

4.0

1.5

2.7

3.5

3.0

8.6

2.6

3.1 0.3

0.3

1.5

2.7

3.4

2.1

4.2

2.0

1.6

3.4

2.2

0.8

1.5

4.2

0.6 1.0

0.7

0.5 1.2

1.5

2.5

1.0 4.5

8.2

1.0

3.0

4.0

0.8 6.6

2.0

1.4

1.3

2.5 2.3

1.0

1.0

4.1 0.9

4.2 5.0

8.0

2.2

4.6 2.5

0.6

1.0

1.2

2.2

4.8

2.1

2.7

0.6

0.7

4.0

2.1

1.2

7.0

3.9

2.6

1.0 2.2

4.0

3.1

4.0

2.0

4.2

2.2

9.0

1.7

3.5

6.0

0.8

1.5

0.2 0.7

1.0

0.2

0.5

1.8

1.4

0.3

0.8

1.6 0.5

0.7

2.4

3.0

5.3

1.3

8.0

0.4

6.6 0.4

8.5

6.0 3.2

4.2

0.73.4

0.5 7.0 1.0

0.5

2.0 0.5

0.9

0.5

0.3

0.4 5.4

0.4

1.9

1.0

0.2

0.5 0.9

8.0

0.4 3.7

0.6

0.3

0.5

2.1

1.7 0.2

4.0

0.5

1.2

0.9

1.0

6.0

1.6

1.6 2.0

2.2

2.8 5.2

1.2 0.5

0.3

2.9

7.0

2.1

1.2

5.8 5.5

0.5

4.3

2.4

0.1

0.5

3.2

0.7

12.5

14.2

18.7

17.6

11.5

13.0

14.0

17.8

14.2

14.8

0.1

0.1

-0.5

-4.0

-1.2

-1.4

-0.4

1.0

2.2

0.5

0.3

0.2

0.1

0.1

-0.1

-0.1

-0.1

-0.1

-0.1

-0.1