UNITED STATES DEPARTMENT OF THE INTERIOR GEOLOGICAL … · lower part of the Hawthorn Formation and...

UNITED STATESDEPARTMENT OF THE INTERIOR

GEOLOGICAL SURVEY

HYDROLOGIC DATA FROM MONITORING OF

SALINE-WATER INTRUSION IN THE CAPE

CORAL AREA, LEE COUNTY, FLORIDA

By Daniel J. Fitzpatrick

Open-File Report 82-772

Prepared in cooperation with the

CITY OF CAPE CORAL

Tallahassee, Florida

1982

UNITED STATES DEPARTMENT OF THE INTERIOR

JAMES G. WATT, Secretary

GEOLOGICAL SURVEY

Dallas L. Peck, Director

For additional information write to:

U.S. Geological Survey Suite F-240 325 John Knox Road Tallahassee, FL 32303

CONTENTS

Page

Abstract 1Introduction 1Hydrologic data collection network 2Well-construction data 2Water-quality data 5Water-level fluctuations 5Lithologic data 6References cited 6

ILLUSTRATIONS

Figure 1. Map showing location of rain gages and monitoring wells that tap the upper and lower Hawthorn aquifers in Cape Coral and adjacent areas 3

2. Map showing location of monitoring wells that tap the surficial aquifer in Cape Coral and adj acent areas 4

3. Generalized section showing the geologic forma tions, lithology, and water-bearing units underlying Cape Coral 7

4. Hydrograph of water levels in well 2434 that taps the lower Hawthorn aquifer and municipal pumpage from the lower Hawthorn aquifer by the City of Cape Coral 9

5. Hydrograph of water levels in well 581 that tapsthe upper Hawthorn aquifer and municipal pumpagefrom the upper Hawthorn aquifer by the City ofCape Coral 10

6-19. Hydrographs of water levels in selected wells that tap the upper Hawthorn and surficial aquifers:

6. Wells 702, 2702, and 3212 23

7. Wells 1059 and 721 24

8. Wells 2640 and 3203 25

9. Wells 2703 and 3213 25

10. Wells 2643 and 3206 26

11. Wells 2644 and 3207 26

iii

ILLUSTRATIONS (Continued)

Page

Figure 12. Wells 2641 and 3204 27

13. Wells 2701 and 3211 27

14. Wells 2244 and 2536 28

15. Wells 2642 and 3205 28

16. Wells 2645 and 3208 29

17. Wells 2700 and 3210 29

18-19. Hydrographs of water levels in wells that tap the lower Hawthorn aquifer:

18. Well 2435 30

19. Well 2526 30

TABLES

Table 1. Monthly rainfall data at the reverse osmosis andlime-treatment water plants in Cape Coral 8

2. Construction data for observation wells in CapeCoral and adjacent areas 11

3. Chloride concentrations in ground water fromthe upper Hawthorn aquifer in Cape Coral and adjacent areas 14

4. Major ion concentrations in ground water from the upper Hawthorn aquifer in Cape Coral and adj acent areas 15

5. Chloride concentrations and specific conductance in ground water from the surficial aquifer in Cape Coral and adjacent areas for May 1980 21

6. Major ion concentrations in ground water from the lower Hawthorn aquifer in Cape Coral and adjacent areas 22

7. Lithologic logs of wells in Cape Coral andadjacent areas 31

iv

CONVERSION FACTORS AND ABBREVIATIONS Factors for converting inch-pound units to International System (SI) of metric units

Multiply By To obtain

Length

inch (in) 25.40 millimeter (mm)foot (ft) 0.3048 meter (m)mile (mi) 1.609 kilometer (km)

National Geodetic Vertical Datum of 1929 (NGVD of 1929); A geo detic datum derived from a general adjustment of the first-order level nets of both the United States and Canada, formerly called "mean sea level." NGVD of 1929 is referred to as sea level in this report.

HYDROLOGIC DATA FROM MONITORING OF SALINE-WATER INTRUSION

IN THE CAPE CORAL AREA, LEE COUNTY, FLORIDA

By Daniel J. Fitzpatrick

ABSTRACT

As a result of declining water levels and saline-water intru sion in the Cape Coral area, the U.S. Geological Survey in coopera tion with the City of Cape Coral established a monitoring well net work in Cape Coral and adjacent areas in 1978-79. The network was designed to provide indication of lateral movement of saline water in the upper part of the Hawthorn Formation; to provide trends in water levels; and to provide background data from: (1) the aquifer in the upper part of the Hawthorn Formation; (2) the aquifer in the lower part of the Hawthorn Formation and upper part of the Tampa Limestone; and (3) the surficial aquifer. The monitoring well net work consists of 77 wells.

Data collected in this network since 1978, as well as data collected from selected wells in the network prior to 1978, are compiled in this report. These data include water-quality data from 69 wells, water-level data from 29 wells, and lithologic logs from 18 wells. Other data compiled in this report include munic ipal pumpage and rainfall data supplied by the City of Cape Coral.

INTRODUCTION

The artesian aquifer in the upper part of the Hawthorn Forma tion is a major source of water supply for municipal, domestic, and irrigation uses in Cape Coral. Wells that hydraulically connect the aquifer in the upper part of the Hawthorn Formation to over lying and underlying saline water-bearing units provide a direct conduit for saline-water movement into the aquifer. This condition has resulted in a deterioration of the water quality in parts of the aquifer (Boggess and others, 1977). Declines in water levels in some areas have increased the potential for inland movement of highly saline water from the coast, as well as movement of saline water from overlying and underlying water-bearing units into the aquifer.

The U.S. Geological Survey in cooperation with the City of Cape Coral designed and established a monitoring well network in 1978-79 to evaluate the movement of saline water and water-level changes in the aquifer in the upper part of the Hawthorn Formation in Cape Coral and adjacent areas and to collect salinity and water- level data from the underlying aquifer in the lower part of the Hawthorn Formation and upper part of the Tampa Formation and from the overlying surficial aquifer.

The aquifer in the upper part of the Hawthorn Formation is locally designated as the upper Hawthorn aquifer. The aquifer in the lower part of the Hawthorn Formation and upper part of the Tampa Limestone is locally designated the lower Hawthorn aquifer. Although these aquifer names are not formally recognized by the U.S. Geological Survey, they are the local (Lee County, Florida) designations for the aquifers.

The purpose of this report is to present previously existing data as well as data collected from the monitoring well network during the initial phases of the investigation. The final phase of the investigation will evaluate the data.

HYDROLOGIC DATA COLLECTION NETWORK

Hydrologic data from the existing monitoring well network have been collected since 1978 for three aquifers that underlie Cape Coral and the adjacent area. The network of hydrologic monitoring sites now consists of 34 wells that tap the artesian upper Hawthorn aquifer, 6 wells that tap the artesian lower Hawthorn aquifer (fig.1), and 37 wells that tap the unconfined surficial aquifer (fig.2). Figure 3 shows the stratigraphic position and lithology of the aquifers (Sproul and others, 1972).

Water levels in five wells that tap the upper Hawthorn aquifer (fig. 1) were monitored by continuous recording devices. Water levels in selected wells that tap the three aquifers were measured monthly, bimonthly, or semiannually.

Water-quality samples were collected and analyzed semiannually from 1978-80 for wells that tap the upper Hawthorn aquifer. Back ground water-quality data for selected wells that tap the surficial aquifer and the lower Hawthorn aquifer were also collected.

Rainfall data (table 1) are collected at the City of Cape Coral's reverse osmosis plant in west Cape Coral and the lime water- treatment plant in south Cape Coral (fig. 1). Municipal groundwater pumpage data from the upper and lower Hawthorn aquifers at these plants (figs. 4 and 5) are also collected. Rainfall and pumpage data are supplied by the City of Cape Coral Utilities De partment.

WELL-CONSTRUCTION DATA

Construction data for 77 monitoring wells (figs. 1 and 2) are given in table 2. Also included are well numbers, aquifers tapped, lithologic logs obtained, and information on whether continuous water-level data are being recorded. The altitude of land surface, relative to sea level, is also given where known.

82° 10' 05'

26°45'

40

35

26°30'

82°00'

CHAIRLOTTE COUNTY

55'

LEE COUNTYzp

2526, 2646

1059EXPLANATION

> M| 0 WELL THAT TAPS THE UPPER HAWTHORN AQUIFER0 270I RECORDING WELL THAT TAPS THE UPPER HAWTHORN AQUIFER

§2526 WELL THAT TAPS THE LOWER HAWTHORN AQUIFERL* RAIN GAGE LOCATED AT THE LIME TREATMENT PLANTR+ RAIN GAGE LOCATED AT THE REVERSE OSMOSIS PLANT_____

1099 LOCAL WELL NUMBERI" ~" ~~ " "

llll

4 MILES

I6 KILOMETERS

Figure 1. Location of rain gages and monitoring wells that tap the upper and lower Hawthorn aquifers in Cape Coral and adjacent areas.

82° 10' 05' 82°00' 55CJiAlRILpTTE COUNTY

" "COUNTY"

26°45'

40'

35'

26° 30'

EXPLANATION

WELL THAT TAPS THE SURFICIAL AQUIFER

3249 LOCAL WELL NUMBER

4 MILES

6 KILOMETERS

Figure 2. Location of monitoring wells that tap the surficial aquifer in Cape Coral and adjacent areas.

Each well is identified by two numbering systems: a local number and a unique number. The local well number consists of a sequence number. This system is used in Lee County for ease of identification; however, the numbers are not necessarily unique as the well number could be duplicated in areas other than Lee County. The unique identification numbers are used for computer storage of data and are based on the grid system of latitude and longitude. These numbers consist of 15 digits and provide the geographic lo cations of the wells. The first six digits represent degrees, minutes, and seconds of the latitude; the next seven represent the degrees, minutes, and seconds of the longitude. The last two dig its are a sequential number within a 1 second grid. For example, if the latitude-longitude for two or more sites are identical, sequential numbers 01, 02, or 03 are assigned to give each site a unique number.

WATER-QUALITY DATA

Water samples were collected from wells that tap the upper Hawthorn aquifer to detect changes in water quality. Since 1978, chloride concentrations were determined semiannually (table 3), and analyses for major ion concentrations were made annually for wells in the upper Hawthorn aquifer (table 4). Analyses for major ion concentrations made prior to 1978 are also included in table 4.

Water samples from wells that tap the surficial aquifer were analyzed for chloride concentrations and specific conductance (ta ble 5).

Water samples from wells that tap the lower Hawthorn aquifer were analyzed for major ion concentrations (table 6).

WATER-LEVEL FLUCTUATIONS

Selected water-level data from wells in the monitoring well network are illustrated in figures 4-19. Data used in the hydrographs are based on either monthly, bimonthly, or semiannual tape measurements for those wells without continuous water-level re corders. Wells with recorders (table 2) are represented by hydrographs of the daily high on the last day of each month. Monthly water-level fluctuations in well 2434 that taps the lower Hawthorn aquifer and well 581 that taps the upper Hawthorn aquifer are il lustrated with monthly municipal pumpage in figures 4 and 5. In addition to well 581, long-term fluctuations in the upper Hawthorn aquifer (1966-80) are represented by wells 702 and 2702 in figure 6. In 1978, well 702 was replaced by well 2702.

Water levels in the surficial aquifer, relative to those in the upper Hawthorn aquifer, are illustrated in figures 6-17 where data from the two aquifers are available at or near the same lo cation. Hydrographs of other wells that tap the lower Hawthorn aquifer are shown in figures 18 and 19.

LITHOLOGIC DATA

Selected lithologic logs for wells from the monitoring well network are given in table 7. All logs were prepared by the U.S. Geological Survey.

REFERENCES CITED

Boggess, D. H., Missimer, T. M., and O'Donnell, T. H., 1977,Saline-water intrusion related to well construction in Lee County, Florida: U.S. Geological Survey Water-Resources Investigations 77-33, 29 p.

Sproul, C. R., Boggess, D. H., Woodard, H. J., 1972, Saline-water intrusion from deep artesian sources in the McGregor Isles area of Lee County, Florida: Florida Division of Geology Information Circular no. 75, 30 p.

DEPTH (feet)

100 -

200 -

300 -

400 -

500 -

600 -

700 -

SERIES

HOLOCENE, PLEISTO CENE, PLIOCENE

MIOCENE

FORMATION

UNDIFFERENTI- ATED DEPOSITS

TAMIAMI FORMATION

_________

HAWTHORN FORMATION

TAMPALIMESTONE

LITHOLOGY

SAND,FOSSILIFEROUS LIMESTONE,WHITE TO YELLOW, ~SANDY,MARLY,FOSSILIFEROUS

CLAY.CALCAREOUS, GREEN

SAND aSANDSTONE,GRAY, TCALCAREOUS ^

CLAY, GRAY, SANDY,PHOSPHATIC

LIMESTONE, GRAY -WHITE,PUAI tfV QAMfW PMOQDUI A T \C

CLAY 8 MARL, GRAY AND GREEN; SOME LIMESTONE

LIMESTONE, GRAY-WHITE,SANDY, PHOSPHATIC

LIMESTONE, GRAY 8 TAN,SLIGHTLY PHOSPHATIC

ia».yy-*.'<t;.smoB

i8^ |i. -".I-

$&iV»i Y1 ? '. .' 1 V. *.«: -. '. fri.V.L'îL-f.'l.-.».:!.-»: l.,v..y .. iv.1 .

Y^ i. :. .!. .. i.. .

.r:;: -if» -..!. v r.

^-n--^q

m \:'i.' .-I.. TI-....-.I:...i... .''".'!.*

» L. ; l.-,-I.

JTpT* if «.r' . ! .'i.-.-.i.rr%. !. l.-.VIj.'. \" J.1,1 .1

. .l.v.i;. vii

i * i

4"*^P±r-*f-,*.i-^î-. -I - l_._Ui

WATER-BEARING UNITS

_ SURFICIAL ÂQUIFER

AQUIFER INUPPER PART OF

^HAWTHORNFORMATION

AQUIFER INLOWER PART OFHAWTHORNFORMATION ANDUPPER PART OFTAMPA LIMESTONE

y

Figure 3. Geologic formations, lithology, and water-bearing units underlying Cape Coral (modified from Boggess and others, 1977).

Table

1. Monthly rainfall data at th

e re

vers

e os

mosi

s and

lime-treat

ment water

plants in

Cape CoralV

[Rainfall

show

n in in

ches

; LT

-

lime-treatment pl

ant,

RO -

reve

rse

osmosis

plan

t]

oo

Month

January

Febr

uary

March

April

May

June

July

Augu

stSeptember

Octobe

rNo

vemb

erDe

cemb

er

TOTAL

1975

LT

RO

0.6

0.9

-2.

0 -

3.0

-2.

4 -

4.5

-17

.4

-4.

18.

35

-3.

6 -

1.4

-0.

3

48.5

5 -

1976

LT

RO

0.0

2.6

-0.

3 -

1.1

-4.5

-5.

4 -

5.8

-12

.65

-12

.3

-2.

9 -

3.3

-2.25

-

53.1

-

1977

LT 5.6

0.1

0.0

1.4

2.7

7.4

7.8

15.2

13.2 1.4

1.4

4.55

60.7

5

RO

_ - - - - - -16.0 9.5

0.2

2.0

3.25 -

1978

LT 3.5

5.0

4.9

2.0

7.6

-9.6

513

.95

11.7 7.2

2.5

0.75

5.7

74.4

5

RO 3.9

3.8

4.8

1.6

2.4

5.7

14.6 8.45

3.95

2.65

0.5

4.45

56.8

1979

LT 7.8

2.8

0.45

3.15

9.4

3.65

2.45

16.4

59.

850.

551.

154.4

62.1

RO 8.65

1.45

1.0

5.3

8.7

1.85

3.95

17.2

515

.95

0.55

1.85

5.55

72.0

5

1980

LT 2.25

1.75

3.7

5.3

3.6

2.5

7.05

10.2

55.

92.

853.

50.55

49.2

RO 2.0

2.2

2.7

2.3

3.35

2.05

9.15

8.3

2.1

3.05

3.9

0.45

41.55

Mean

LT 3.3

2.2

1.9

2.65

5.03

5.5

9.1

11.7 9.46

2.3

1.91

2.95

58.0

RO 4.85

2.5

2.8

3.1

4.8

3.2

9.2

12.5 7.9

1.6

2.1

3.4

57.9

5

I/ Rainfall da

ta supplied by the

City of Ca

pe Co

ral.

UJ>UJ

UJ 0)

oCO

H UJ UJu.

35

30

UJ

20

15

10

SEA LEVEL

T

9

MUNICIPAL PUMPAGE FROM THE LOWER HAWTHORN AQUIFER BY THE CITY OF CAPE CORAL

V

LOWER HAWTHORN AQUIFER (WELL 2434)

20 coz o_J

40 <

60

80

100

120

140

160

z

UJ

a.

>- _j i

o

1977 978 1979 980

Figure 4. Water levels in well 2434 that taps the lower Hawthorn aquifer and municipal pumpage from the lower Hawthorn aquifer by the City of Cape Coral.

UJ > UJ

Ul

0)

M

UJ

O

flQ o:

o ui >

o CD H-

UJ

UJ u. UJ > UJ a: UJ h-

SE

A

LE

VE

L 10 15 20

25

30

35

MU

NIC

IPA

L

PU

MP

AG

E

FR

OM

T

HE

.L

OW

ER

H

AW

TH

OR

N

AQ

UIF

ER

BY

T

HE

CIT

Y

OF

CA

PE

CO

RA

L

v IM

MS

' \*

' -'1

\n/»

lU

PP

ER

H

AW

TH

OR

N

AQ

UIF

ER

(W

EL

L

581-R

EC

OR

DE

R)

II

II

II

10

to z

o

20

J

30

40

50

g

60

70

80

O 2 _j

< H

O

1966

67

6

8

69

70

71

72

7

3

74

75

76

7

7

78

79

8

0

1981

Fig

ure

5. W

ate

r le

vels

in

w

ell

581

that

taps

the

up

per

H

awth

orn

aq

uif

er

and

munic

ipal

pu

mpa

ge

from

th

eupper

H

awth

orn

aquif

er

by

the

Cit

y

of

Cap

e C

ora

l.

Tabl

e 2. Construction da

ta for

obse

rvat

ion

wells

in Cape Co

ral

and

adjacent areas

[Aqu

ifer

designation:

WT,

surf

icia

l; UH

, Upper

Hawt

horn

; LH,

Lowe

r Ha

wtho

rn]

Local

well

No. 581

702

721

781

1058

1059

1099

1106

1107

1108

1109

1110

1111

1113

1114

1115

1116

1117

1118

1119

1120

1136

2244

2434

2435

2525

2526

2527

2528

2536

Iden

tifi

cati

on

numb

er

2635320815922.01

2636270815627.01

2641

5308

2022

3.01

2638

3408

2005

3.01

2638140820207.01

2645

1708

2022

1.01

2640

5308

1563

2.01

2640

5408

1592

6.01

2641460815923.01

2641440815826.01

2640

5508

1538

1.01

2642410815824.01

2641470815627.01

2641

2008

2022

1.01

2637

2008

1573

1.01

2639

0508

1572

8.01

2636

3308

2002

7.01

2634

3808

1563

2.01

2634

0408

1575

8.01

2633

4708

2002

6.01

2640550815727.01

2635

3208

1592

2.02

2632

4208

1572

1.01

2635260820102.01

2633

0708

1555

9.01

2631170820510.01

2645

1708

2022

1.02

2639

5508

2083

1.01

2639

0708

1592

7.01

2632

3608

1570

8.01

Aqui

fer

UH

UH

WTUH UH

UH UH

UH UH

UH UH

UHUH

UH UH

UH UH

UH UHUHUH

WT UH

LH LHLH LH

LH LH

WT

Date

drilled

(yea

r)

1965

1966

1968

1966

1964

1970 -

1970

1970

1970

1970

1970

1970

1970

1970

1970

1970

1970

1970

1970

1970

1970

1975

1977

1977

1977

1977

1977

1977

1977

Well

depth

(feet)

177

108 18

279

146

163

219

228

191

?16 87

238

166

130

172

169

201

248

213

224

106 20 207

700

704

645

605

605

625 45

Dept

h ca

sed

(feet)

_ -

982 95

156

129

143

136

137 84 147 - 126

126

147

106 - 126 42 - 15 150

353

352

405

300

360

420 19

Well

diameter

(inc

hes)

8 2 4 6 4 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 4 4 4 4 4 4 4 4 4

Datum

of land

surf

ace

abov

e sea

leve

l (feet)

9.58

7.45

6.23

10.0

16.

0010

.55

14.9

811

.96

14.3

715

.20

13.0

615

.79

16.7

65.

959.55

12.9

99.

026.

755.45

4.35

13.9

99.71

5.38

6.34

5.19

3.89

10.7

17.

9411

.96

5.36

Water

Lith

o-

leve

l lo

gic

recorder

log

X X

X X X X X X X X

Tabl

e 2. Construction data for

obse

rvat

ion wells

in Cape Coral

and

adjacent areas Continued

[Aqu

ifer

de

sign

atio

n:

WT,

surficial; UH

, Upper

Hawt

horn

; LH

, Lower

Hawthorn]

to

Local

well

No.

2640

2641

2642

2643

2644

2645

2646

2700

2701

2702

2703

2820

2821

3203

3204

3205

3206

3207

3208

3209

3210

3211

3212

3213

3214

3215

3231

3232

3233

Iden

tifi

cati

on

number

2638

1308

1552

8.01

2635

3308

1573

4.01

2632

5708

1585

7.01

2632

5308

2014

2.01

2634

4008

2022

0.01

2637430820412.01

2645370815522.02

2640

0208

2012

8.01

2638

1908

1585

8.01

2636

2108

1563

7.01

2633

5708

1575

6.02

2639

5508

2083

1.02

2631170820510.02

2638

1308

1552

8.02

2635330815734.02

2632

5708

1585

7.02

2632

5308

2014

2.02

2634

4008

2022

0.02

2637

4308

2041

2.02

2645370815522.03

2640

0208

2012

8.02

2638190815858.02

2636

2108

1563

7.02

2633

5708

1575

6.03

2639550820831.04

2631170820510.03

2633

1108

1572

8.01

2633470815729.01

2633

4508

1572

9.01

Aqui

fer

UH UH UH UH UH UH

UH

UH UH

UHUHUH UH

WT WT

WT WT

WT WT

WT WT

WT WT

WT WT

WT WT

WT WT

Date

drilled

(yea

r)

1978

1978

1978

1978

1978

1978

1978

1978

1978

1978

1978

1978

1978

1978

1978

1978

1978

1978

1978

1978

1978

1978

1978

1978

1978

1978

1979

1979

1979

Well

depth

(fee

t)

180

170

160

200

178

210

220

205

206

155

159

241

340 20 20 18 18 18 18 18 18 18 18 18 18 18 45 27 20

Depth

case

d (f

eet)

128

118

108

141

128

160

170

165

175

120

120

192

290 8 8 8 8 8 8 8 8 8 8 8 8 8 35 22 10

Datum

of land

Well

su

rfac

e ab

ove

diam

eter

se

a le

vel

(inc

hes)

(f

eet)

4 4 4 4 4 4 4 4 4 4 4 4 4 1.25

1.25

1.25

1.25

1.25

1.25

1.25

1.25

1.25

1.25

1.25

1.25

1.25

2 2 2

7.54

8.29

5.12

6.53

6.60

5.54

20.81

6.46

13.0

47.83

5.20

7.56

3.95

7.54

8.29

5.12

6.53

6.60

5.54

20.8

16.46

13.0

47.

835.20

7.56

3.95 - - -

Water

Litho-

leve

l lo

gic

reco

rder

lo

g X X X X X X X XX

XX

XX

X X X X X X X X X X X X X X X X

Tabl

e 2. Construction data for

observation wells

in Cap

e Coral

and


[Aquifer designation:

WT,

surf

icia

l; UH,

Upper

Hawthorn;

LH,

Lowe

r Hawthorn]

Loca

l well

No.

3234

3235

3236

3237

3239

3240

3243

3245

3249

3250

3252

3253

3255

3256

3257

3258

3259

3260

Iden

tifi

cati

on

numb

er

2632580815927.01

2633470815827.01

2633460820025.01

2633

4708

2012

5.01

2635

3008

2002

7.01

2635310815829.01

2637

2208

2002

8.01

2641230820221.01

2639

0508

1572

6.01

2638

1008

1562

3.01

2635

1808

1562

7.01

2635

1808

1555

5.01

2634

2908

1572

4.01

2635

3308

1572

3.01

2636

2408

1572

4.01

2637

1908

1572

4.01

2634140815857.01

2634

3908

1592

6.01

Aqui

fe

r

WT WT WT WT WT

WT WT

WT WT

WT WT

WT WT

WT WT

WT WT

WT

Date

drilled

(year)

1979

1979

1979

1979

1979

1979

1979

1979

1979

1979

1979

1979

1979

1979

1979

1979

1979

1979

Well

depth

(fee

t)

23 17 20 40 17 22 27 27 15 22 40 35 25 28 25 29 22 25

Depth

cased

(feet)

13 7 10 30 12 17 17 17 10 12 35 30 20 23 22 25 17 20

Well

di

amet

er

(inc

hes)

2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2

Datum

of land

surface

above

sea

leve

l (feet)

_ - - - - - - - - - - - - - - - - -

Wate

r Li

tho-

le

vel

logic

reco

rder

lo

g

Table 3. Chloride concentrations in ground water from the upper

Well No.

581702781

10581059

10991106110711081109

11101111111311141115

11171118111911202244

26402641264226432644

26452646270027012702

270328202821

Hawthorn aquifer in

[Concentrations

1978Apr-May Nov

250 24087 90

440 420500 450450 430

75180 185200 190260 26079 75

400 400230 245980 1,125460 465280 280

89 50340 340340 370110 120390 300

200 200150 140260 280

1,100 975980 1,000

460 45050

1,05040

205

450620550

Cape Coral and adjacent areas

in milligrams per liter]

1979May

25092

440580440

_20019026088

380240

1,100 1,340260

8936027087

430

200140280

1,100 1,980

45085

980 1,50

230

420650420

Oct

235100410500445

_17519025090

380230080-245

_35037575

360

190140275025975

45090

00050

250

385725430

1980May

310-410570440

77190190260110

440170

1,100 1,-220

_-26080

380

180140290980 1,990

430-980 1,52

210

400660510

Oct

215-400560400

85175175220165

420-100480220

9532028075

355

185140280000900

40075

05060

200

650500

14

Table 4. Major ion

conc

entr

atio

ns in

gr

ound

water

from the

upper Ha

wtho

rn aquifer

inCa

pe Coral

and

adja

cent

areas

[Con

centrations

in mi

llig

rams

per

lite

r, except as no

ted]

0 & rH rH a) s 581

702

781

10

58

1059

1099

c 0 H 4-1 a <u rH rH O a M-l 0 <u 4J cfl 0

04/2

5/7

805/1

0/7

90

5/1

4/8

0

04/2

4/7

80

5/0

9/7

9

04

/27

/78

05

/08

/79

05

/13

/80

04

/27

/78

05

/08

/79

05/1

3/8

0

08/2

7/7

504/2

7/7

80

5/0

7/7

905/1

6/8

0

06/2

7/7

505/0

9/7

90

5/1

2/8

0

^-\ CN

JO H cn ^_

x cfl O H rH H C/3 43 60 59 49 44 36 37 36 29 30 32 31 38 30 33 31 - 42

^-\

0) pt< ^x c 0 J_l M

0.06

0.0

30.0

8

0.05

0.0

1

0.0

00.0

20.0

1

0.0

30.0

10

.03

0.0

10

.01

0.0

10.0

1

0.0

30.0

00

.08

/ > cfl O *s

g 3 H O rH Cfl

0 56 57 57 46 45 63 64 56 78 74 82 98 95 94 84 40 54 45

^-\ bO S x P3 § H CO C C bO cfl S 44 45 49 34 39 61 60 59 70 72 75 48 45 46 47 37 41 35

s~ \ n en ^x P3 § H 4-1 C O M 4-1 cn 3.3

3.2 4.0

2.2 2.1

5.0 4.8

5.0 6.4

5.0 6.3

3.9 5.0

4.7 4.8

2.4 1.7

1.5

^-\ cfl S3 \^s P3 § H T3 O cn 95 82 120 41 47 190

180

180

250

260

260

170

170

170

160 44 55 60

x-\ ^ _x 6 3 H CO CO Cfl

4-1 0 PL.

12 13 16 8.5 8.3

16 19 18 15 19 18 6.9 7.2

7.5 6.5

5.8

5.6

6.2

^-\ -3- o en ^

x 0) 4-1 Cfl

M-l

rH 3 en 15 14 10 21 15 81 65 70 150

120

120 13 17 15 12 12 - 18

^-\

H O ^x 0) T3 H M O rH & 0 250

250

310 87 92 440

440

410

500

580

570

440

450

440

440 72 - 77

/ x Pn ^x 0) T3

H M 0 3 rH Pn 0.8

0.9 1.2

0.7 0.8

1.6

1.5

1.7

0.9

0.8

1.0

0.7 0.8

0.9

1.0 1.4 - 1.0

^-\ <T

)o o ffi ^x 0) 4-1 Cfl C 0 43 M cfl O H PQ 240

240 280

280

210

210 200

200 209

210

210 284

290 -

CO o 0 c« o CO cfl t^ 4-1

H c H rH Cfl

X rH < 200

200

180

230

230

170

170

170

160

160

160

172

170

170

170

233

240

240

lard

nes

sas

C

aC03

g 3 H CO 0) C bO c« 6 ~»^. | D H O rH Cfl

O 320

330

350

260

280

410

410

390

490

490

520

440

430

430

410

260

310

260

0) 4-1 Cfl C 0 43 M cfl O C 0 & 130

130

170 28 46 240

240

220

330

320

360

270

260

260

240 22 68 18

Dis

solv

edso

lids

o o O CO rH 4-1 c« 0) 3 T3 H CO OJ & 58

071

787

7

431

449

1,05

01,

040

1,02

0

1,23

01,

350

1,31

0

1,02

81,

050

1,11

01,

020

393 - 426

T3 0) 4-1 Cfl

rH 3 0 rH Cfl

0

_ 643

735

427

431

997

975

938

1,20

01,

260

1,26

0

912

932

912

891

386 - 430

0) O

s~*

S °

cti

o4-1

mO

CN

3 TJ

4-1C

cfl

O 0

S Oo

-^ H

CO

M-l

O H

42

0

00)

3

CU

^-x

cn 1,1

40

1,1

70

1,4

00

735

730

1,79

01,

900

1,85

0

2,19

02,

350

2,37

5

1,60

01,

780

1,81

01,

900

650

840

850

^-\

CO 4-1

H C 3 ^x W O

*

8.3

8.1

7.6

7.8 8.0

8.1

8.1

8.0 7.8

7.5

7.8 _ 7.9

7.3 7.6

7.9

7.8

s~\ o 0 \-s cu M 3 4-> Cfl M 0) & 0 0) H 26 26 27 25 26 26 28 28 25 26 27 27 26 26 28 26 26 30

Tabl

e 4. Major ion

concentrations in

gr

ound

water from th

e upper Hawthorn aquifer

inCape Co

ral

and

adja

cent

areas Continued

[Con

cent

rati

ons

in mi

llig

rams

per

liter, except

as no

ted]

0 z iH iH 0) S

1106

1107

1108

1109

1110

c o H 4-1 O 0) iH iH O O M-t O 0) 4-> CO Q

07

/17

/75

04

/27

/78

05

/07

/79

05

/13

/80

07/2

3/7

50

4/2

6/7

80

5/0

8/7

90

5/1

3/8

0

07/1

6/7

50

4/2

6/7

80

5/0

8/7

90

5/1

3/8

0

07

/16

/75

04

/27

/78

05

/07

/79

05

/13

/80

07/1

6/7

504/2

7/7

805/0

9/7

90

5/1

2/8

0

/ N CN

j

O H CO >^x CO O H iH H CO 48 48 47 48 37 32 36 39 29 30 30 31 37 48 40 46 37 38 35 38

< x 0) Cu >^x c o M H

0.0

20

.00

0.0

70.0

1

0.0

20.0

10

.00

0.0

1

0.0

10

.00

0.0

00.0

1

0.0

20.0

10

.09

0.0

1

0.0

00.0

00

.00

0.0

2

/~\ cO u **

~s % H O rH CO U 56 52 53 46 58 55 55 51 63 57 60 53 40 40 41 39 69 74 71 63

s^*. 1? \~s I 3 H CO CU C bO CO S 44 41 46 44 41 38 40 42 53 54 54 54 34 31 35 34 64 65 61 63

s^. t-l CO \^s ei § H 4-i c o -U C

O 3.1

2.9

2.8

2.7

3.0

2.8

2.8

2.6 6.0

6.3

5.4

5.7 1.0

2.2

1.9

1.9

7.1

7.7

6.9

6.4

s~ \ CO 55 v^ cj 3 H T3 O CO 94 95 87 77 75 75 68 76 94 100 82 77 54 60 57 76 140

140

120

180

<--\

* >^x 6 3 H CO CO CO 4-» O PH 16 14 17 16 12 12 12 12 10 11 12 12 12 12 12 12 16 14 17 16

s~ *. o- O CO >

-x CU 4-> CO m rH 3 CO

36 43 40 33 18 21 17 15 15 18 14 9.3

22 26 24 24 28 32 30 24

s~\

iH U >^x CU T3 H M O rH & U 180

180

200

190

190

200

190

190

250

260

260

260 85 79 88 110

410

400

380

440

s~ *. PK >

-x CD T3 H M O 3 rH fe 1.4

1.2

1.2

1.3

1.4

1.2

1.3

1.3

1.4

1.3

1.3

1.4

1.5

1.4

1.3

1.2

1.3

1.3

1.2

1.3

S-*

i

ro O U ffi

>^x CU 4-> CO C O ,0 M CO O H CQ 289

290

280 249

240

250 262

260

260 275

280

290 229

230

230

ro O U CO U CO

CO >*.

4->

H c H iH CO ^ iH < 237

240

230

230

204

200

210

210

215

210

210

210

226

230

240

230

188

190

190

190

Har

dnes

sas

C

aC03

e 3 H CO CU c bO **N^. pa § H O rH CO 0 320

300

330

300

320

300

310

300

380

370

380

360

320

230

250

240

440

460

440

420

CU 4-> CO c o 43 M CO O c o & 87 64 95 69 110

100

100 93 170

160

170

150 98 0 11 10 260

270

250

230

Dis

solv

edso

lids

u o O oo iH 4-> CO CU 3 T3

H CO CU tf 684

641

683

645

675

591

581

586

688

691

720

698

410

417

448

482

1,1

30

949

1,0

30

1,0

20

T3 CU 4J CO iH 3 O iH CO U 621

620

632

596

558

555

545

555

650

666

647

630

420 - 443 885

885

835

946

CU o <--

Nc

uCO

o

4->

inO

CN

j3 T3

4J

a

CO0 0

0 O

o ^.

H

COM

-i O

H

,g0

§CU

3

a >

-xCO 1,0

60

1,0

80

1,1

30

1,1

40

1,1

00

995

1,0

80

1,0

60

1,2

10

1,2

15

1,3

00

1,2

70 - 725

770

850

1,6

50

1,6

30

1,6

80

1,9

50

s^*. CO 4->

H § >-x ES a

7.3

8.0

7.3

7.9 7.3

8.2

8.0

8.0

7.4

7.9 7.7

8.0 7.9 7.2

8.1

7.3

7.8 7.8

7.9

S-*

l

u o v^ cu M 3 4-> CO M CU a e CU H 26 26 26 26 27 25 26 26 26 26 26 26 26 26 26 - 26 26 26

Table 4. Major io

n concentrations in

ground water from th

e upper Hawthorn aquifer in

Cape Coral

and

adja

cent

areas Continued

[Con

cent

rati

ons

in milligrams pe

r li

ter,

except as no

ted]

o !Z i I

rH 5 !2

11

11

1113

1114

1115

1116

1117

1118

c: o H 4-1 CJ <1> iH iH O O M-l O <U 4-1 CO Q

07/2

3/7

50

4/2

7/7

80

5/0

9/7

90

5/1

2/8

0

08/2

7/7

504/2

6/7

80

5/0

7/7

905/1

6/8

0

04

/25

/78

05/1

1/7

9

04

/25

/78

05/0

9/7

90

5/1

3/8

0

04

/25

/78

04/2

4/7

805/0

9/7

9

04/2

4/7

805/0

9/7

9

/->* CN

O H CO v^^ cO CJ

H rH H CO 37 38 37 29 21 21 21 23 37 34 27 27 26 61 20 20 55 37

/*"s a) fe s»x c o »-i M

0.1

40.0

00.0

20

.01

0.0

20.0

40.0

30.0

1

0.0

10.0

0

0.1

50

.03

0.0

0

0.0

3

0.0

50.0

0

0.0

50.0

1

/ \ cd o \~s e 3 H O rH cd u 73 69 69 48 150

140

150

160 75 70 83 82 77 45 44 44 56 57

s-^ bO *7-«

v»x 6 3 H co (1) fi bo cd X

rH 50 50 51 39 110

110

120

120 66 59 45 50 44 32 27 30 44 49

/*"s M CO v»x s 3 H 4-1 C 0 »-i 4-1

CO 2.7

2.8

2.5

1.8

8.1

7.7

5.6

7.4

3.8

3.2

2.2

1.8

1.1

2.0

1.5

1.4

2.0

2.4

/-N cd S3 v-x C3 1 H T3 O CO 94 95 82 76

500

460

490

480

200

180 95 72 76 36 36 39 170

170

/- v « v-x s 3 H CO CO CO 4-1 O PM

11 10 11 8 18 16 19 18 11 12 4

.43

.92.6

12 4.4

4.4

10 12

/ \ «* o CO v»x <1> 4-1 CO M-l

.H 3 CO 19 26 21 18

240

250

230

230

110 69 15 14 13 19 33 31 68 64

/-N iH U v»x 0) T3

H-v

j-l O .H & U 23

023

024

017

0

1,0

00

980

1,1

00

1,1

00

460

340

280

260

220 95 89 89 340

360

/- v fe \~s <1> T3 H J-i O 3 rH fe

1.1

0.9

0.8

1.0

0.9

0.7

0.7

0.8

1.0

0.8

0.6

0,6

0.5

1.0

0.7

0.8

0.9

1.0

/- v m o u S3 s»x 0) 4-1 CO c: o 42 »-i CO CJ H PQ 307

300

310 169

160

160 220

220

280

270 250

200

200

210

220

m o 0 cO 0 CO cO > » 4-1

H c: H rH CO ^5 rH < 252

250

250

200

139

130

130

130

180

180

230

220

180

210

160

160

170

180

flar

dn

ess

as

CaC

03

0 ^ H CO 0) c: bO cO 3 "0 3 H O rH cO U 390

380

390

280

840

810

880

900

460

420

400

410

370

250

220

240

320

350

0) 4-1 cO c: o & M cO CJ c: o S3 140

140

130 83 700

680

740

770

280

240

170

190

190 41 59 71

150

170

Dis

solv

ed

soli

ds

u o O 00

rH 4-1 CO 0) 3 T3 H CO <u & 63

068

372

955

8

2,3

60

2,3

10

2,4

60

2,3

40

1,1

40

936

644

772

586

432

381

385

772

922

T3 0) 4-1 cO iH 3 O rH CO U 66

967

066

751

1

2,13

02,

060

2,22

02,

220

1,07

087

6 644

568

426

354

358 _ 861

0) O

/-N

c: u

cO o

4-> m

O

CN3 TJ

4->

c: co

o o e o

o -^

H

COU

-l O

H

.13

0

BV

3

c±^

CO

1,2

00

1,2

10

1,2

40

1,0

00

3,9

00

4,0

00

4,1

00

4,1

50

1,9

00

1,9

00

1,3

00

1,3

50

1,1

50

710

650

630

1,5

00

1,5

50

/-N CO 4-1

H § s»x

S3 A 7.3

8.1

7.9

8.0

7.4

7.6

7.5

7.9

8.0

7.9

7.3

8.0

8.0

8.0

8.1

7.9

8.0

7.9

/-N u o **~s 0) J-i 3 4-1 cO J-i 0) A s 0) EH 27 26 27 26 27 26 26 28 26 27 28 28 26 25 25 26 25 26

Tabl

e 4. Major io

n co

ncen

trat

ions

in

ground wat

er from the

upper Hawthorn aquifer

in

cape

Co

ral

and


[Concentrations

in m

illigrams

per

liter, except as

no

ted]

0 JZ5

iH iH 0) &

1119

1120

2244

2640

2641

2642

c o H 4-» O 0) iH rH O O M-l 0 0) 4-1 (0 O

04

/25

/78

05

/10

/79

05/1

4/8

0

07

/17

/75

04

/27

/78

05/0

9/7

90

5/1

2/8

0

04/2

6/7

805/1

1/7

90

5/1

4/8

0

05/1

9/7

805/1

0/7

905/1

3/8

0

05/1

8/7

805/1

1/7

90

5/1

4/8

0

05/1

8/7

80

5/1

0/7

905/1

4/8

0

^ ^ CN o H CO ^^ CO O H iH H CO 36 65 63 45 33 46 56 23 23 22 23 25 25 51 51 50 42 44 43

s-\ 0) PH ^^ a O j-i M 0

.04

0.0

20.0

1

0.0

20.0

10.0

30.0

4

0.0

30.0

40.0

1

0.0

10.0

20.0

1

0.0

10.0

60.0

1

0.0

10.0

00.0

1

^ ^ co u s_x es I H O iH CO 0 80 89 83 45 43 40 38 45 51 44 63 62 62 49 47 47 55 57 54

s-\ & s g 3 H CO 0) a DO 5 s 50 48 46 43 36 38 31 40 51 42 42 42 40 37 39 35 42 45 45

s-\ J-I CO s-x p 1 H 4-1 a o H 4-1

CO 1.8

1.3

1.3

1.3 2.6

2.3 1.3

1.9

2.0

1.8

1.5

1.9

1.8

2.0

2.2

2.2

1.4

1.8

1.8

^ ^ ctf ^f

ea 3 H T3 O CO

14

0 79 85 69 65 52 52 190

210

210 90 68 81 55 56 61 120

120

130

s-\ $4 s-x g 3 H CO CO CO 4-1 O PM

10 7.3

8.2

14 14 14 11 10 9.9

9.6

4.4

4.5

4.2

9.5

9.7

10 12 12 12

^ ^ <f o CO \^s 0) 4-1 CO M-l

iH 3 CO

47 17 12 43 44 31

49 40 42 46 40 38 14 12 8.9

32 33 30

^ ^ iH O ^^ 0) T3 H S-i O iH J3 O 340

270

260

130

110 87 80

390

430

380

200

200

180

150

140

140

260

280

290

^ ^ PH ^^ 0) "0 H S-i O 3 iH ta 0.4

0.4

0.4

1.4

1.1

1.1

1.0

1.4

1.3

1.3

0.6

0.6

0.8

0.9

1.0

1.1

0.7

0.9

0.9

/~*> CO

o u K ^^ <U 4-> CO c o 43 J-I CO O H PQ 250

260 281

290

290 220

210 230

240 240

240 230

230

CO o c_> CO U CO CO > » 4->

H C H iH CO ^ iH < 210

210

220

230

240

240

190

180

170

170

190

200

170

200

200

200

190

190

190

Har

dnes

sas

C

aC03

§ y H CO 0) a DO CO e ""g y H O iH CO O 410

420

400

290

260

260

220

280

340

280

330

330

320

280

280

260

310

330

320

0) 4-1 CO C O & J-I CO O a 0 jz; 200

210

180 61 21 21 34 99 170

110

140

130

150 80 84 64 120

140

130

Dis

solv

edso

lids

o o O oo iH 4-1 CO 0) 3 T3 H CO 0) Pd 794

865

750

530

488

457

437

833

999

958

665

587

590

513

508

509

779

740

817

T3 0) 4-1 CO iH 3 O iH CO O 828

705

691

530

492

454

393

859

922

855

584

562

535

487

476

475

679

707

721

0) o c CO 4J o 3 C1-i o o y H «4-l

H y CO Ou

CO

/-N o o IT)

CM 4J CO *^«. CO J2 Q 3 \^s

1,5

20

1,3

00

1,3

20

920

845

770

680

1,5

20

1,7

50

1,7

00

1,1

00

1,0

40

1,1

00

870

890

930

1,3

00

1,3

90

1,3

00

s-\ CO 4-1

H s 3 ^^ R a 7.6

7.9 7.9

7.4

8.0

7.8

8.2

8.2

7.9

7.9

7.8

7.0

7.8 7.8

8.2 _

7.8 7.9

^> o o ^^ 0) M 3 4-1 (0 M 0) & 0 0) H 25 26 27 26 26 26 26 24 26 27 26 27 27 26 28 28 25 27

00

Table 4. Major ion

concentrations in ground water from th

e upper

Hawthorn aquifer

inCape Coral

and


[Con

cent

rati

ons

in milligrams pe

r liter, except as

no

ted]

0 Jz; .H CU

2643

2644

2645

2646

2700

2701

2702

c 0 4-1 0 CU r^ o o , 0 CU

4-

1 cfl

0

05/1

6/7

80

5/1

0/7

90

5/1

4/8

0

05

/17

/78

05

/10

/79

05

/14

/80

05

/23

/78

05/0

8/7

90

5/1

6/8

0

05

/22

/78

05

/07

/79

09

/08

/78

05/0

8/7

905/1

6/8

0

09

/06

/78

05

/09

/79

05

/13

/80

09

/01

/78

05

/09

/79

05

/13

/80

CM O H

CO s"*' cfl 0

H CO 27 29 30 27 28 30 31 30 32 43 39 17 17 18 21 22 23 33 34 33

^ cu ^^ c 0 IH 0.0

10.0

50

.03

0.0

10.1

10.0

2

0.0

10

.00

0.0

1

0.0

10.0

8

0.0

10.0

10.0

4

0.0

00

.02

0.0

1

0.0

30

.00

0.0

1

^^ cfl O g § H

O cfl 88 - 97 82 79 90 70 69 62 50 38 130

120

130 41 37 34 66 57 55

^^ S x_x

g 4 H CO CU

bO cfl & 97 -10

0 95 100

110 58 54 55 36 35 100

100

110 25 27 26 45 44 41

/ N M

CO e H 4-1 C

O 4-1

CO 9.5 - 7.2

11 9.9

10

6.3

6.4

6.5

3.0

2.9

24 26 25

1.3

1.3

1.2

3.4

3.4

3.4

^^. cfl

\lt/ e H 0

CO 550 - 540

550

520

520

210

210

210 70 37

480

450

470 37 34 45 120 96 120

£ v_x 8 H CO CO cfl 4-1 O PM

24 - 24 24 26 24 15 15 14 11 10 20 21 19 4.1

4 4.2

10 8.5

8.9

o CO CU 4-1 cfl CO 190

200

190

190

210

180 71 66 59 23 17

270

260

250 13 12 11 68 63 60

C_J

^ CU H M

O 5

1,1

00

1,1

00

980

980

980

990

460

450

430 85

1,1

00

980

980 52 50 52

230

230

210

/ N

fjL

|^

CU H 0 .H 0.7

0.8

0.9

0.7

0.9

1.0

0.9

1.1

1.1

1.4

1.6

0.5

0.5

0.6

1.1

1.2

1.3

1.0

1.0

1.1

m o ffi CU 4-1 cfl c 0 & M

cfl

O H

PQ 220

220 240

240 240

250 220

230

170

170 240

230 240

250

ro 0 o cfl 10 cfl 4-1

H C H cfl < 180

180

180

200

200

200

200

210

200

180

190

140

140

140

200

190

200

200

210

200

Har

dnes

sas

C

aC0

3

& H CO CU C bC cfl ^^^ g H

O cfl 630 - 660

610

620

690

420

400

390

280

240

760

740

810

210

210

190

350

330

310

cu 4-3 Cfl

O ,0 M cd CJ C O

450 - 480

410

420

490

220

200

190 96 54 620

600

670 10 16 0

160

120

110

Dis

solv

edso

lid

s

o O OO iH *J

cfl <1) 3 H

CO CU

2,4

00

2,2

90

2,4

60

2,3

40

2,2

40

2,3

20

1,1

60

1,1

10

1,0

80

538

409

2,3

30

2,2

70

2,2

40

303

309

302

702

693

cu 4-1 Cfl

iH O cfl

2,1

90

-2

,08

0

2,0

80

2,0

70

2,0

80

1,0

40

1,0

20

990

506

379

2,2

30

2,0

60

2,0

90

314

302 695

660

653

cu C

CJ

Cfl

o4-1

mO

CM

Td

4-1

C

cfli

d o H

CO

<4-(

O

0

&

CU

3

CO

3,8

60

4,3

00

3,9

00

3,6

90

3,8

00

3,8

00

1,9

30

1,9

70

1,9

00

842

670

3,8

10

4,0

00

4,0

00 580

580

1,1

70

1,1

60

1,3

00

CO 4-1

H C 3

ex _ 7.7

7.8 7.8

7.7 7.2 7.9

7.3 7.4

7.1

8.0

7.9

8.2 - 8.0

8.2

Q_J

o

CU M 4-1 cfl M CU ex e cu H

_ 26 27 26 28 26 26 26 30 24 26 28 28 26 26 28 - 26 26

Table 4. Major ion

concentrations in gr

ound

water fr

om th

e upper Ha

wtho

rn aquifer

inCa

pe Co

ral

and


[Concentrations

in milligrams per

lite

r, except as noted]

. o iH iH <U S

2703

2820

2821

c o H 4-J O Cl) iH iH 0 U M

-4 O Cl)

4-J CO Q

08

/31

/78

05

/10

/79

05/1

4/8

0

09/1

9/7

80

5/0

8/7

90

5/1

6/8

0

10

/26

/78

05

/08

/79

05/1

6/8

0

X-N C

NO H C/

>x_

x CO O H iH H W 39 34 37 19 18 20 25 24 24

X-N <U Cn C O M

0.0

00.0

00.0

1

0.0

00

.00

0.0

3

0.0

00.0

00.0

2

X-N CO \^s g £j H O iH CO 62 67 62 83 84 95 66 63 72

x s bO s_/

gj £j H CO Cl) C bO cO 46 46 44 64 66 74 74 68 76

X~N J_

|

C/>

v^ gj £j H 4-1 c o J_l

4-J

C/>

2.6

1.8

1.8

7.8 7.9

9.0 6.8

7.1

8.6

x-s CO v^ 3 H 13 O c/> 190

200

200

210

250

270

250

240

260

X-N |S/»

v^ gj £j H CO CO CO 4-1 O P-.

11 12 11 21 23 22 20 20 18

x~

\-3

-

O C/>

s_/

Cl)

4-1 CO M

-4 iH jj W 69 74 71 19 28 25 210

220

200

x \ iH Q_

Js_

/

Cl)

T3 H j_i 0 iH _rt

0 380

420

400

560

650

660

480

420

510

x \

pt|

s_/ (U H M O iH fa 0

.80.7

0.8

1.3

1.4

1.4

1.8

1.8

1.8

x~

\ en o u pr]

x.x (U 4-1 cO C 0 J_l cO U H pa 220

230 180

180 200

190 "

en o u cO CO cO ^> 4-1

H C H iH CO >J,

i |

<! 180

190

180

150

150

140

160

160

150

Har

dnes

sas

Ca

CO-j

g 3 H CO Cl) C bO Q >^^ g 3 H U iH CO

350

360

340

480

490

550

480

450

500

Cl)

4-1 cO C 0 J_l cO U c o 53 170

170

160

330

340

410

310

290

350

Dis

solv

edso

lids

u o O 00 iH 4-J CO Cl)

3 -a H CO (U prf 991

1,0

20

1,1

20

1,2

50

1,4

80

1,3

80

1,2

50

1,2

50

1,3

10

-a d) 4-1 CO i_| 3 U iH cO 0 90

997

393

6

1,0

70

1,2

20

1,2

60

1,2

30 -

1,2

60

Ox

-vC

CJ

cO o

4-J

LO

O

CN

3 *"O

4J

C

cO0 U

g o

O "

»«,

H

COM-

4 O

H ,

CU

3

d)

3PJ

^-X

C/5

1,7

10

1,7

50

1,8

00

2,2

60

2,5

00

2,5

75

2,0

50

2,1

70

2,3

00

x \ CO 4-1

H fi

s_/

K O,

7.9

7.6

8.1 7.3 7.6 ~"

X"S U o s_x <u J_l

3 4-1 CO J_l

d) Qj

Q d) H 25 25 26 26 26 28 28 28

Table 5. Chloride concentrations and specific conductance in groundwater from thefor May 1980

Local well No.

11362536320332053206

32073208321432153231

32323233323432353236

32373239324032433245

32493250325232533255

32563257325832593260

surficial aquifer in Cape Coral

Specific conductance (umhos/cm at 25 °C)

57557,000

4853,200

14,300

4,9009,100

6001,170

22,500

1,0202,250

25,000920

1,650

8,5001,850

5702,750

710

660575

16,60044,000

900

735585700970815

and adjacent areas

Chloride (mg/L)

3020,500

40740

4,040

1,2601,140

60250

8,100

145400

9,60075

260

2,50028045

72510

1015

5,10021,200

80

454015

12575

21

Tabl

e 6. Major ion

concentrations in ground water from th

e lowe

r Hawthorn aquifer

inCa

pe Co

ral

and

adjacent areas

[Con

centrations

in milligrams per

liter, except as

noted]

£ rH rH £

2434

2525

2526

2527

2528

a o *l"l o rH rH 0 o <4H 0 CU 4-1 Q

06

/16

/78

06/2

2/7

8

06

/22

/78

06

/22/7

8

06

/09

/78

x-x CN

O tl-_

l *P

1

CO N""' CO U H rH I

*n

CO 21 26 15 17 16

^^ cu N_l

t/

f- 0 M

0.0

0

0.0

0

0.0

0

0.0

0

0.0

1

X-N CO 0 e H O rH CO O 56 70 74 170 99

X-N bO 5T

2U v f g s H CO rj bo 2 69 67 81 160

100

X-N CO N_>,

g rj H 4-1 a 0 4-1

CO 8.4

9.3

13 27 20

^.^ CO J2; I H 0 CO 220

230

300

920

500

X-N

V X g 3 H CO CO CO 4-1 0 18 19 15 30 22

X-N O CO 0) 4-

J CO rH CO

130

180

150

310

240

X-N rH \_

X CU H M 0 rH " 400

420

580

1,9

00

920

X-N

[V,

\_

X cu H J-i O 3 rH 2.2

1.7

1.7 1.2

1.2

X-N CO

O i-r|

V_

f CU 4-1 CO a o ,0 j-i CO O H PQ 240

190

170

150

170

CO O ctf QJ CO cd ^» 4-1

H a H rH CO s^ rH 200

160

140

120

140

Har

dnes

sas

C

aC03

e 3 H CO 0) C bO 2 3 E H O rH CO 430

460

530

1,1

00

680

0) 4-J CO G O J-i C0 0 C o !2;

240

310

390

990

540

Dis

solv

edso

lids

u o O co rH 4-1 CO cu 3 I"O H CO 0) P4

1,2

00

1,1

90

1,4

20

4,2

30

2,2

20

0) 4-J CO rH O rH CO °

1,0

40

1,1

20

1,3

10

3,6

10

2,0

00

0) O

x-N

cO

o *"*

m

O

CM3 12

*J

S *

o « e o

o -«^

. H

CO

*w

oo

'acu

3

eu o

-CO 1,9

00

2,0

60

2,5

30

6,5

10

3,6

50

X-N CO 4-

1 H s 3V

X S3 a

7.5

7.6

7.8

7.5 7.4

X-N u o v x 0) M 4-J

CO J-I 0) cu e 0) H 26 27 28 27 28

ro

ro

10

U>

ui _i < uj 03 (T

O Ul

>

O

03 UJ

UJ

LU > LU -J (T

LJ

SE

A

LE

VE

L 5

10 20 25

30 35

'S

UR

FIC

IAL

A

QU

IFE

R

(WE

LL

3212)

UP

PE

R

HA

WTH

OR

N

AQ

UIF

ER

(WE

LL

702)

WE

LL

7

02

R

EP

LA

CE

DW

ITH

W

EL

L

27

02

-RE

CO

RD

ER

1966

67

68

6

9

70

71

72

73

74

75

76

77

78

79

80

Fig

ure

6. W

ate

r le

vels

in

w

ell

s 70

2 an

d

2702

th

at

tap

th

e

upper

H

awth

orn

aq

uif

er

and

well

32

12

that

tap

s th

e su

rfic

ial

aq

uif

er.

to

LU\-

>

UJ

UJ

Id _

J

UJ

O>

-I

UJ

UJ

-Iff

i

UJ

O m

20 15 10

SE

A

LE

VE

L

i i

ri

i \

r

UP

PE

R

HA

WT

HO

RN

A

QU

IFE

R

(WE

LL

1059)

Xj

'SU

RF

ICIA

L

AQ

UIF

ER

(W

EL

L

721)

I I

II

I I

I

1968

69

70

71

72

73

74

75

76

77

78

79

80

Figure 7. Water levels in we

ll 10

59 th

at taps the

uppe

r Hawthorn aquifer

and

well

72

1th

at ta

ps the

surficial

aqui

fer.

l\J

_J UJ

UJ _l 2

SE

A</>

LE

VE

L

o UJ

00 oc

0

10U

J o CD H

UJ

UJ S.

20

z _T UJ

UJ K

30U

J

An

i

_-/N

:/%

1

.^ /\\_

- s~

^~=

SU

RF

ICIA

L

AQ

UIF

ER

(WE

LL

3203)

/U:

/

v\i

\Û

PP

ER

HA

WT

HO

RN

AQ

UIF

ER

\

/ Y

(WE

LL

2

64

0)

1

y

1

10

SE

A

LE

VE

L 10 20

30

40

SU

RF

ICIA

L

AQ

UIF

ER

(W

EL

L

3213)

UP

PE

R H

AW

THO

RN

AQ

UIF

ER

(W

EL

L

27

03

-RE

CO

RD

ER

)

1978

1979

I960

1978

1979

I960

Fig

ure

8.

Wate

r le

vels

in

w

ell

26

40 th

at

tap

s th

e

up

per

H

awth

orn

aquif

er

and

wel

l 32

03

that

tap

s th

e surf

icia

l aquif

er.

Fig

ure

9. W

ate

r le

vels

in

w

ell

2703

th

at

taps

the

upper

H

awth

orn

aquif

er

and

well

32

13

that

tap

s th

e surf

icia

l aq

uif

er.

(E

ro <UJ m

13

10 5

SE

A

LE

VE

L

1 1

UP

PE

R

HA

WT

HO

RN

AQ

UIF

ER

_

/

(WE

LL

2

64

3)

__

*~

^^~

~~

SU

RF

ICIA

L

AQ

UIF

ER

""

(W

EL

L

3206)

1 1

13

10 5

SE

A

LE

VE

L *

1 1

UP

PE

R

HA

WT

HO

RN

A

QU

IFE

R_

/

(WE

LL

2

64

4)

_

^2

^^~

^/

SU

RF

ICIA

L

AQ

UIF

ER

~

(W

EL

L

32

07

)

1 1

1978

1979

1980

1978

1979

1980

Figure 10. Water le

vels

in we

ll 26

43 th

at taps

the

upper

Hawthorn aq

uife

r an

d well 32

06 th

at

taps

the

surficial

aqui

fer.

Figu

re 11. Water le

vels

in well 26

44 that taps

the

upper

Hawthorn aq

uife

r an

d well 32

07 that

taps

th

e surficial

aquifer.

10

UJ > UJ o UJ

00 OC

O UJ

>

O

00

ro

UJV

J

QJ u_ UJ

>

UJ _l

oc UJ

SE

A

LE

VE

L

10 20 30

40

SU

RF

ICIA

L

AQ

UIF

ER

(W

EL

L

3204)

UP

PE

R

HA

WT

HO

RN

A

QU

IFE

R'

(WE

LL

2

64

1)

10

SE

A

LE

VE

L

10 20

30

40

V SU

RF

ICIA

L

AQ

UIF

ER

(W

EL

L

3211)

A-A

UP

PE

R

HA

WT

HO

RN

A

QU

IFE

R

(WE

LL

2701-R

EC

OR

DE

R)

1978

1979

I960

1978

1979

I960

Figure 12. Water le

vels

in

well 2641 that ta

ps

the

upper

Hawthorn aq

uife

r an

d we

ll 32

04 that

taps the

surficial

aqui

fer.

Figu

re 13. Water le

vels

in

wel

l 27

01 that taps

the

uppe

r Hawthorn aquifer

and

well

3211 th

at

taps

the

surf

icia

l aquifer.

UJ

0) QC

O U

J O

CO

N>

r-00

U

JU

J

UJ > UJ _l GC

U

J

lo

SE

A

LE

VE

L 10 15 20 25 30

SU

RF

ICIA

L

AQ

UIF

ER

(W

EL

L 2

536)

N.

UP

PE

R

HA

WT

HO

RN

AQ

UIF

ER

(W

EL

L

22

44

)

10 5

SE

A

LE

VE

L 10 15 20 25 30

SU

RF

ICIA

L

AQ

UIF

ER

/

(WE

LL

3

20

5)

UP

PE

R

HA

WT

HO

RN

A

QU

IFE

R

(WE

LL

2642)

1I

1978

1979

I960

1978

1979

I960

Fig

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Table 7. Lithologic logs of wells in Cape Coral and adjacent areas

Well 2434

Depth (feet) Description

0-15

15-25 25-30 30-40 40-45 45-80 80-90 90-105 105-135 135-150 150-165 165-190 190-205 205-225 225-230 230-255 255-270 270-275 275-280 280-300 300-315 315-330 330-335 335-340 340-355 355-370 370-400 400-415 415-420 420-515 515-570 570-605 605-675 675-700

Sand, fine to medium, tan, slightly phosphatic; somelimestone.

Same, shell fragments.Clay, gray, sandy; some limestone and shell fragments. Clay, gray; some limestone.Sandstone, dark gray, clayey; some limestone. Clay, green.Clay, green; some shell.Clay, gray-green, sandy; some phosphate gravel and limestone, Limestone, gray-white, marly, phosphatic.

sandy, marly, phosphatic.phosphatic.marly, phosphatic.

Limestone, gray-white. Limestone, gray-white. Limes tone, gray-whi te Same, more marl. Limestone, gray-white. Limestone, gray-white

marly, and phosphatic.marly; some phosphate.

Limestone, gray-white, phosphatic, and marl. Same, less phosphate.Marl, gray-white, phosphatic; some limestone. Limestone, gray-white, marly, phosphatic. Marl, gray-white, phosphatic; some limestone. Clay, gray-green, phosphatic; some limestone. Limestone, gray-white, marly, phosphatic. Marl, gray-white phosphatic; some limestone. Limestone, gray-white, marly. Marl, gray-white, phosphatic; Limestone, gray-white, marly. Same, less marl. Limestone, gray-white, marly. Same, slightly crystalline; some phosphate. Limestone, gray-white, marly, slightly crystalline. Limestone, gray-white, crystalline, marly. Limestone, gray-white, marly. Limestone, gray-white, crystalline, marly. Limestone, gray-white, marly, crystalline.

phosphatic. some limestone, phosphatic.

31

Table 7. Lithologic logs of wells in Cape Coral and adjacent areas Continued

_________________________Well 2525________________________

Depth (feet)__________________________Description_________________________

0-5 Sand, fine, brown.5-10 Sand, fine, tan; shell.10-27 Shell fragments, some sand.27-30 Shell, limestone fragments.30-40 Limestone, gray and tan, sandy; shell fragments.40-55 Clay, gray, sandy.55-135 Clay, green.

135-140 Clay, gray and white, phosphatic.140-145 Clay, white.145-155 Clay, gray and white, sandy, phosphatic.155-165 Clay, gray, phosphate gravel.165-185 Clay, gray, phosphatic.185-210 Clay, gray, sandy, phosphatic.210-240 Sand, fine, gray, phosphatic, clayey.240-265 Marl, gray, sandy, phosphatic.265-290 Limestone, gray, phosphatic, marly.290-340 Limestone, gray-white, sandy, phosphatic.340-360 Limestone, gray-white, sandy, phosphatic, marly.360-417 Limestone, gray-white, slightly phosphatic.417-420 Limestone, dark gray and tan, hard, phosphatic.420-430 Marl, green.430-440 Marl, gray-white, phosphatic.440-445 Marl, green, phosphatic.445-485 Limestone, gray and tan, hard.485-505 Limestone, gray, phosphatic.505-525 Marl, gray-white, phosphatic.525-545 Limestone, tan, phosphatic.545-555 Marl, gray, phosphatic.555-625 Limestone, tan, sugary.625-645 Limestone, light gray, slightly phosphatic.

32


________________________Well 2526________________________

Depth (feet)___________________________Description___________________________

5-10 Limestone, creamy tan, sandy, marly; some shell fragments.10-15 Sand, fine, tan, marly; some limestone and shell fragments.15-20 Sand, fine, dark tan, marly; some fill and shell fragments.20-30 Limestone, creamy tan, sandy.30-35 Sandstone, creamy tan, marly; some limestone.35-50 Clay, gray, sandy; some limestone.50-55 Clay, green, sandy; some limestone and shell fragments.55-65 Clay, gray, sandy; some shell fragments.65-80 Clay, gray, sandy; some limestone.80-125 Clay, green, sandy.125-130 Sandstone, gray, marly, phosphatic; some limestone.130-145 Sand, fine, dark gray, marly, phosphatic; some limestone.145-160 Limestone, gray-white, sandy, marly, phosphatic.160-170 Sandstone, gray-white, phosphatic; some limestone.170-185 Sandstone, gray-white, phosphatic, dolomitic; some limestone.185-200 Limestone, gray-white, sandy, phosphatic.200-205 Sandstone, gray-white, phosphatic; some limestone.205-225 Limestone, white, sandy, phosphatic.225-250 Limestone, gray-white/ sandy, marly, phosphatic.250-265 Limestone, gray-white, sandy, very marly, phosphatic.265-275 Marl, tan; some limestone.275-295 Limestone, gray, marly, sandy, phosphatic.295-305 Limestone, white to gray, very marly, phosphatic.305-310 Sand, fine to medium tan, very marly; some limestone.310-330 Clay, white to gray, phosphatic.330-340 Limestone, gray-white, marly, phosphatic; some shell fragments.340-375 Limestone, gray-white, very marly, phosphatic.375-405 Limestone, gray-white, sandy, phosphatic.405-415 Limestone, gray-white, marly, phosphatic.415-435 Marl, white to gray, phosphatic; some limestone.435-445 Limestone, gray-white, marly, phosphatic.445-485 Marl, gray-white, phosphatic; some limestone.485-495 Limestone, gray-white, marly, very phosphatic.495-505 Limestone, gray-white, marly, phosphatic.505-535 Limestone, white to gray, marly.535-545 Marl, white to gray, slightly phosphatic, some limestone.545-555 Limestone, tan, marly.555-595 Marl, white to gray; some limestone.595-605 Limestone, tan-white, marly, slightly phosphatic.

33


Depth (feet)

Well 2527

Description

0-20 Sand, fine to medium, tan; shell fragments.20-55 Limestone, creamy tan, sandy; some crystalline, gray, lime

stone; shell fragments.55-65 Sandstone, creamy tan and limestone, gray, crystalline.65-70 Same as above; some shell fragments.70-85 Marl, gray, sandy, slightly phosphatic; some limestone.85-100 Sand, fine to medium, dark green, very marly, phosphatic;

some shell fragments.100-120 Clay, gray-green, sandy, phosphatic; some limestone.120-160 Clay, green, sandy.160-170 Sand, medium, green, very marly, phosphatic.170-180 Limestone, green, marly, phosphatic.180-195 Clay, green, slightly phosphatic.195-205 Clay, green, sandy, very phosphatic; some limestone.205-215 Limestone, gray-white, slightly marly.215-235 Limestone, gray-white, marly, phosphatic.235-245 Marl, gray-white, phosphatic; some limestone.245-275 Limestone, gray-white, marly, phosphatic.275-285 Marl, gray-white, phosphatic; some limestone.285-325 Limestone, gray-white, marly, phosphatic.325-375 Marl, gray-white, phosphatic; some limestone.375-385 Marl, gray-white, phosphatic; some limestone, and dolomite,385-405 Limestone, gray-white, crystalline.405-425 Marl, gray-white, phosphatic; some limestone.425-435 Limestone, gray-white, slightly marly.435-455 Limestone, white to gray, slightly crystalline.455-505 Limestone, gray-white, slightly phosphatic, crystalline.505-525 No sample.525-555 Limestone, gray-white, slightly phosphatic and crystalline,555-565 Limestone, white to tan, slightly crystalline.565-605 Limestone, gray-white and tan, crystalline.

34


Well 2528


0-10

10-2020-4040-5050-6565-8585-105

105-125125-145145-165165-225225-245245-260260-275

275-295 295-305 305-345

345-405 405-415 415-435 435-465 465-625

Shell, creamy tan, sandy.Sandstone, creamy tan; shell fragments.Marl, creamy tan, sandy; shell fragments.Clay, gray; some shell fragments.Sand, medium, dark brown, very clayey; some shell fragments,Clay, green, sandy; some shell.Same, phosphatic.Sand, medium to coarse, gray-green, marly; some shell.Same, without shell.Clay, green, sandy.Clay, dark gray, sandy; some shell fragments.Sand, medium to coarse, dark gray, very marly.Clay, gray, sandy; some shell fragments.Sand, medium to coarse, gray, marly, phosphatic; some shell

fragments.Same as above; some limestone.Clay, green, sandy; some shell fragments and limestone. Sand, medium to coarse, dark gray, marly, phosphatic; somelimestone and shell fragments.

Limestone, gray-white, marly, phosphatic. Same, some crystalline limestone. Limestone, gray-white, very marly, phosphatic. Limestone, gray-white, phosphatic, slightly crystalline. No samples available.

35


____________________Well 2536____________________

Depth (feet)______________________Description________________

0-10 Sand, fine to medium dark brown.10-19 Sand, medium to coarse, light brown.19-20 Sand and shell, phosphatic, clayey.20-30 Clay, gray.30-45 Clay, green, sandy.

36


Well 2640

Depth (feet)_____________________Description_________________________________

0-10 Sand, tan, medium grained; some shell fragments and white clay,10-30 Limestone, creamy tan, sandy, marly and shell fragments.30-40 Clay, green; some shell fragments.40-70 Clay, green.70-80 Clay, green; some shell fragments.80-90 Clay, green, sandy; some shell fragments.90-100 Sand, fine, gray, clayey; some shell.

100-110 Sand, fine, gray, very clayey; phosphate gravel.110-120 Sand, fine, dark gray, clayey, phosphatic.120-130 Limestone, gray-white, sandy, phosphatic.130-140 Limestone, gray-white, phosphatic.140-180 Limestone, gray-white, marly, phosphatic.

37


__________________________Well 2641______________________

Depth (feet)________________________Description_________________

0-10 Sand, tan; some marl; shell fragments.10-20 Limestone creamy tan, sandy; some shell fragments.20-30 Sand, tan, marly; some limestone; phosphate.30-40 Clay, green; some shell fragments.40-80 Clay, green.80-90 Clay, green, sandy; some shell fragments.90-100 Sand, fine, dark gray, clayey, phosphatic.100-120 Limestone, gray-white, sandy, phosphatic.120-140 Limestone, gray-white, marly; sand, phosphatic.140-170 Limestone, gray-white, very marly, sandy, phosphatic,

38


__________________________Well 2642_________________________

Depth (feet)________________________Description______________________

0-10 Sand, fine to medium, tan; some limestone.10-30 Sand, fine to medium, tan, clayey; some limestone.30-40 Clay, gray, sandy; some limestone, shell fragments.40-60 Clay, gray, very sandy, phosphatic.60-70 Clay, green, sandy; some limestone; shell fragments.70-80 Clay, green, sandy.80-90 Clay, gray, sandy.90-100 Clay, dark gray, sandy, very phosphatic.100-120 Limestone, gray-white, sandy, phosphatic.120-140 Limestone, gray-white, marly, sandy, phosphatic.140-160 Limestone, gray-white, very marly, sandy, phosphatic.

39


Well 2643


0-10 Sand, fine to medium, tan.10-30 Sand, fine to medium, tan; some limestone; shell fragments.30-40 Sand, fine to medium, tan, clayey, phosphatic; some limestone.40-50 Clay, gray, sandy; some shell fragments.50-60 Clay, green, sandy; some shell.60-80 Clay, green.80-90 Clay, green, sandy.90-110 Clay, green.110-120 Clay, gray, sandy, phosphatic.120-130 Clay, dark gray, sandy, phosphatic.130-140 Limestone, gray-white, marly, sandy, phosphatic.140-160 Limestone, gray-white, sandy, phosphatic.160-190 Limestone, gray-white, sandy, marly, phosphatic.190-200 Limestone, gray-white, sandy, very marly, phosphatic.

40


____________________________________Well 2644_________________________

Depth (feet)______________________________Description__________________________

0-10 Sand, fine to medium, tan.10-30 Sand, fine to medium, tan; some limestone; shell fragments.30-40 Sand, fine to medium, tan, marly; some limestone; shell

fragments. 40-50 Sand, fine to medium, tan, very marly; some limestone and

shell fragments.50-60 Clay, gray, sandy; some shell fragments.60-70 Clay, gray, some shell fragments.70-100 Clay, green; some shell.100-120 Clay, green.120-140 Sand, dark gray, clayey; some limestone, phosphate.140-160 Limestone, gray-white, sandy, phosphatic.160-178 Limestone, gray-white, marly, sandy, phosphatic.

41


__________________________Well 2645________________________

Depth (feet)____________________Description__________________________

0-10 Sand, fine to medium, tan, clayey, phosphatic.10-20 Sand, fine to medium, tan, clayey, some shell fragments; fill,20-50 Limestone, creamy tan, sandy, marly; some shell fragments.50-70 Clay, gray, sandy; some limestone.70-90 Clay, green; some shell fragments.90-130 Clay, green.130-150 Sand, dark gray, clayey, phosphatic; some limestone.150-170 Limestone, gray-white, sandy, phosphatic.170-190 Limestone, gray-white, marly, sandy, phosphatic.190-210 Limestone, gray-white, very marly, sandy, phosphatic.

42


__________________________Well 2646__________________________

Depth (feet)_______________________Description__________________________

0-10 Limestone, creamy tan; some shell.10-20 Limestone, creamy tan, marly, sandy.20-40 Clay, gray; some limestone and shell fragments.40-50 Clay, green, sandy; some shell.50-90 Clay, green.90-100 Clay, green, sandy; some shell fragments.100-140 Sand, dark gray, clayey, phosphatic; some limestone.140-160 Limestone, gray-white, sandy, phosphatic.160-180 Limestone, gray-white, sandy, marly, phosphatic.180-200 Limestone, gray-white, marly; sand, very fine, phosphatic,200-220 Limestone, gray-white, marly, sandy, phosphatic.

43


__________________________Well 2700____________________________

Depth (feet)_____________________Description________________

0-10 Sand, fine, tan and shell fragments.10-20 Limestone, tan, sandy and shell fragments.20-30 Limestone, tan, marly, phosphatic and shell fragments.30-70 Clay, green.70-90 Clay, green and shell fragments.90-100 Clay, green, sandy.100-110 Sand, fine, gray.110-120 Sand, fine, gray, clayey, phosphatic; shell fragments.120-130 Sandstone, gray, phosphatic.130-140 Sand, dark gray, fine, phosphatic.140-150 Sand, gray, fine, clayey, phosphatic.150-160 Limestone, gray-white, sandy, phosphatic.160-170 Limestone, gray, sandy, marly, phosphatic.170-180 Limestone, gray-white, sandy, phosphatic.180-205 Limestone, gray-white, sandy, phosphatic; some shell fragments

44


__________________________Well 2701________________________

Depth (feet)______________________Description_________________

0-10 Limestone, iron stained, sandy and shell fragments.10-20 Sand, fine, tan and shell fragments.20-30 Sand, medium, tan and shell fragments.30-40 Limestone, gray; sand, medium, tan; shell fragments.40-50 Limestone, gray and shell fragments.50-60 Sand, fine, gray, clayey; shell fragments; some limestone,60-70 Clay; sandstone, gray; shell fragments.70-80 Clay, green, slightly sandy.80-100 Clay, green.100-110 Sandstone, gray; shell fragments.110-120 Sandstone, gray, clayey, phosphatic; shell fragments.120-130 Sand, fine, dark gray, clayey, phosphatic.130-140 Marl, gray-white, sandy, phosphatic.140-150 Limestone, gray-white, sandy, phosphatic.150-170 Limestone, gray-white, phosphatic.170-190 Limestone, gray-white, marly, phosphatic.190-206 Limestone, gray-white, phosphatic.

45


__________________________Well 2702_________________________

Depth (feet)___________________________Description__________________

0-10 Sand, fine to medium, tan.10-20 Sand, fine to medium, tan and shell fragments20-30 Clay, gray; shell fragments.30-50 Limestone, gray, marly; shell fragments.50-60 Limestone, gray; green clay; shell fragments.60-70 Clay, green.70-80 Clay, green; sandstone, gray; shell fragments80-95 Sand, dark gray, very phosphatic, clayey.95-155 Limestone, gray-white, phosphatic.

46


Well 2703

Depth (feet)__________________________Description_____________________

0-10 Sand, fine to medium, tan.10-30 Limestone, tan, sandy.30-50 Limestone, gray, sandy, marly.50-70 Sand, very fine and green clay.70-90 Clay, green, sandy.90-100 Clay, gray, sandy; slightly phosphatic.100-110 Sand, dark gray, clayey, very phosphatic.110-140 Limestone, gray-white, phosphatic.140-150 Limestone, gray-white, clayey, phosphatic.150-159 Limestone, gray-white, phosphatic; shell fragments

47


__________________________Well 2820______________________

Depth (feet)_______________________Description________________________

0-10 Sand, fine, tan.10-50 Sand, fine, tan and shell fragments.50-60 Sandstone, tan and shell fragments.60-70 Sandstone, tan; limestone, gray; shell fragments.70-90 Limestone, gray, marly, sandy and green clay.90-160 Clay, green, sandy.160-170 Clay, green, sandy, slightly phosphatic170-190 Sand, very fine, green, slightly phosphatic.190-200 Sand, very fine, green, phosphatic; some gray clay.200-210 Sand, gray, slightly phosphatic, some limestone.210-220 Limestone, gray-white, marly, slightly phosphatic; shell

fragments.220-230 Limestone, gray, marly, phosphatic.230-241 Limestone, gray-white, marly, phosphatic.

48

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