SCALE

ATLANTIC OCEAN

LAKE 

OKEECHOBEE

Lake

 Istokpoga

Kissimmee River

St. Lucie Canal

EXPLANATION

PB-1132 Well location and number

Stratigraphic and hydrogeologic 

 section - this figure 

Stratigraphic and hydrogeologic 

 section - other figures

BROWARD COUNTY

PALM BEACH 

COUNTY

MARTIN COUNTY

ST. LUCIE 

COUNTY

OKEECHOBEE 

COUNTY

OSCEOLA COUNTY INDIAN RIVER 

COUNTY

HENDRY COUNTY

COLLIER 

COUNTY

HIGHLANDS 

COUNTY

POLK 

COUNTY

GLADES COUNTY

BGTP-1

CLEW_IW-1

CLEWRO-PW1

FPL-IW2

GLF-5

GLF-6

HASR-DZMW

HIF-42

ICW-1

L2-TW

LAB-TW

LKOKEE_ASR

LRRO-IW1

MF-20

MF-37

MF-40

OKF-100

OKF-105

OUA-EW1

PB-1132

PBF-15

PBF-7

PSL-DMW

TFIW-1

W-15880

W-16182

W-17052

W-5409

W-5435

W-5438

W-5439 W-5441

GLF-0002

BREX-1

ROMP29A

C'

C'

A

A'

X'

B

B

B'

B'

C

C

D

D'

E'

E

X

0 5 10 MILES

0 5 10 KILOMETERS

27°40'

27°20'

1,200,000

1,100,000

27°00'

1,000,000

26°40'

900,000

26°20'

800,000

81°20' 500,000 81°00' 600,000 80°40' 700,000 80°20' 800,000 80°00' 900,000

Easting

Northing

0

0

1.5

1.5

3.0 MILES

3.0 KILOMETERS

Quartz sand

Dolomite

Clay or claystone Shell bed Limestone

Grainstone Packstone Wackestone Mudstone

Phosphatic

 (trace or minor)

Dolomitic

Sucrosic

Vuggy porosity

Calcareous

Fossils or 

 fossiliferous

Sandy Silty Clayey

Intermediate confining unit

Middle semiconfining unit

Lower Floridan confining unit

No sample

Lithology

 Accessory lithologic components or modifiers

EXPLANATION

Arcadia Formation--dashed where location 

 is uncertain

Phosphate (common 

 or abundant; greater

 than 10%)

No data or lithologic 

 description not used

LANDMSL Altitude of land surface, in 

 feet above NGVD 1929

Dolosilt

Shells

Anhydrite

Surficial aquifer system

Upper Floridan 

 aquifer

Avon Park permeable zone

Lower Floridan aquifer--uppermost 

 major permeable zone

Hydrogeologic unit

Lower Arcadia Formation marker horizon

Suwannee Limestone--dashed where location 

 is uncertain

Ocala Limestone--dashed where location 

 is uncertain

Avon Park Formation--dashed where location 

 is uncertain

Lower Avon Park Formation marker horizon

Lithostratigraphic unit upper boundaries 

Hydrogeologic unit boundaries

Surficial aquifer system

Upper Floridan aquifer--dashed where location 

 is uncertain

Avon Park permeable zone--dashed where 

 location is uncertain

Lower Floridan aquifer, uppermost major permeable 

 zone--dashed where location is uncertain 

Flow zones evaluated in open-hole intervals using 

 borehole flowmeter and fluid properties geophysical 

 data and shown in flow zone column

Borehole geophysical data curves

Description Abbreviation for

geophysical tool or device

Unit of 

measure Description

1 (Spliced) indicates more than one data collection interval is included in the curve. If intervals overlap, splicing was done at the greatest 

depth of the upper interval.

CAL

GR (spliced)1

GAMM

XCAL-12

 and YCAL-12

Caliper

Gamma ray

Gamma ray

X-caliper and Y-caliper

(both on same tool and 90 degrees apart)

in.

GAPI

cps

in. 

Inch

American Petroleum Institute

Standard Units

Counts per second

Inch 

2 Number indicates separate data collection intervals with number increasing with depth 

Calcareous 

 dolomite

Dolomitic

 limestone

Heavier black horizontal lines 

 define sample description 

 intervals. Other regularly 

 spaced horizontal lines are

 part of repeated lithologic 

 symbols, such as in

 limestone or dolomite

K =

53 feet/

day

SC =

27 gpm/

foot

Hydraulic test data shown on left side of well plots

Packer test interval and result. Test is done using drill pipe.

 SC is specific capacity, in gallons per minute per foot

 of drawdown

Aquifer test interval and result. Test is done of open interval below casing.

 K is hydraulic conductivity, in feet per day. Values are calculated 

 from transmissivity and thickness of open interval in production well

Quartz sandstone

Chert

Open-hole interval over which no flow zones were identified

Flow zone interpreted from borehole flowmeter and 

 fluid properties geophysical data

Interval not evaluated for flow

Deeper interval not evaluated for flow

Open-hole interval 

 over which flow 

 was evaluated Open-hole interval over which no flow zones were identified

Flow zone interpreted based on increase in flow during drilling,

 borehole fluid temperature data, and other borehole geophysical 

 data that indicate formation fracturing

Open-hole interval over which no flow zones were identified

Upper Floridan aquifer

Surficial aquifer system

Avon Park permeable zone

Lower Floridan aquifer--uppermost major permeable zone

Intermediate confining unit or

Intermediate aquifer system 

Middle semiconfining unit 1

Middle semiconfining unit 2

Lower Floridan confining unit

Well-to-well

connectivity is 

uncertain

Well-to-well connectivity 

is uncertain

Altitude, in feet below NGVD 1929Altitude, in feet below NGVD 1929

SOUTHWEST NORTHEAST

Land surface Land surface

Datum

NGVD 29

Datum

NGVD 29 0

–100

–200

–300

–400

–500

–600

–700

–800

–900

–1,000

–1,100

–1,200

–1,300

–1,400

–1,500

–1,600

–1,700

–1,800

–1,900

–2,000

–2,100

–2,200

–2,300

–2,400

100

–2,500

0

–100

–200

–300

–400

–500

–600

–700

–800

–900

–1,000

–1,100

–1,200

–1,300

–1,400

–1,500

–1,600

–1,700

–1,800

–1,900

–2,000

–2,100

–2,200

–2,300

–2,400

100

–2,500

24.5 Miles 31.4 Miles 6.5 Miles 16.2 Miles

B B ́ Section D–D’ Section E–E’

TFIW-1

LANDMSL: 12 feet

YCAL-1

(IN)

(IN)

(IN)

(IN)

(IN)

(IN)

0 30

XCAL-1

0 30

GR-1

0 (GAPI) 150

XCAL-2

0 30

YCAL-2

0 30

YCAL-3

0 40

XCAL-3

0 40

GR-2 (spliced)

0 (GAPI) 100

Depth, in feet below land surfaceLithology

Flow zonesHydrogeologic units

Lithologic description not used

‡ Upper boundary for Upper Floridan aquifer

estimated using lithology and gamma ray

and formation resistivity borehole 

geophysical data. Lower boundary is 

estimated from flowmeter data collected 

in TFRO-1 at same site.

‡

K =

560 feet/

day

‡

Aquifer test data from well TFRO-4 at same 

site (Stemle, Andersen & Assoc., and others,

2003).

ICW-1

LANDMSL: 35.5 feet

GR

0 (GAPI) 125

CAL

0 (IN) 30

Lithology

Depth, in feet below land surfaceLithologyFlow zonesHydrogeologic units

Lithologic description not used

K =

54 feet/

day

K =

1,740 feet/

day

Aquifer test data from ICW-2 at same 

site (Bechtel Power Corp., 1994). 

MF-37 (W-18256, M-1360)

LANDMSL: 22.41 feet

GR (spliced)

0 (GAPI) 200

XCAL

0 (IN) 20

YCAL

0 (IN) 20

Flow zonesHydrogeologic units

Depth, in feet belowland surface

Lithologic description from Florida Geological 

Survey for W-18256. Packer and aquifer test 

data from Bennett and others (2004), except for 

tests below depth of 1,500 feet which are from 

Michael Bennett, written commun., South Florida

Water Management District, 2001.

SC =

2 gpm/

foot

SC =

17.7 gpm/

foot

SC =

27 gpm/

foot

K =

53 feet/

day

Packer and aquifer test data from well EXPM-1 

at same site

SC =

106 gpm/

foot

SC =

9 gpm/

foot

SC =

62 gpm/

foot

SC =

27 gpm/

foot

GLF-6 (W-18253, GL-331)

LANDMSL: 16.21 feet

GR (spliced) 

0 (GAPI) 200

CAL (spliced)

0 (IN) 20

Depth, in feet belowland surfaceLithologyFlow zonesHydrogeologic units

Lithologic description from Florida Geological 

Survey for W-18253. Packer test data from 

Bennett and Rectenwald (2002).

Major permeable zone boundaries from 

M. Bennett, 2003, South Florida Water 

Management District, DBHYDRO database

†

†

†

Upper boundary of Upper Floridan aquifer 

from Bennett and Rectenwald (2002)

SC =

1.3 gpm/

foot

SC =

0.01 gpm/

foot

SC =

0.33 gpm/

foot

SC =

176 gpm/

foot

LAB-TW (W-17591, HE-1133)

LANDMSL: 21.41 feet

CAL

0 (IN) 20

XCAL

0 (IN) 20

YCAL

0 (IN) 20

GR (spliced) 

0 (GAPI) 200

0

LithologyFlow zonesHydrogeologic units

–100

–200

–300

–400

–500

–600

–700

–800

–900

–1,000

–1,100

–1,200

–1,300

–1,400

–1,500

–1,600

–1,700

–1,800

–1,900

–2,000

0

–100

–200

–300

–400

–500

–600

–700

–800

–900

–1,000

–1,100

–1,200

–1,300

–1,400

–1,500

–1,600

–1,700

–1,800

–1,900

–2,000

0

–100

–200

–300

–400

–500

–600

–700

–800

–900

–1,000

–1,100

–1,200

–1,300

–1,400

–1,500

–1,600

0

–100

–200

–300

–400

–500

–600

–700

–800

–900

–1,000

–1,100

–1,200

–1,300

–1,400

–1,500

–1,600

–1,700

–1,800

–1,900

–2,000

0

–100

–200

–300

–400

–500

–600

–700

–800

–900

–1,000

–1,100

–1,200

–1,300

–1,400

–1,500

–1,600

–1,700

–1,800

–1,900

–2,000

–2,100 –2,100

–2,200

–2,300

–2,400

–2,500 Depth, in feet below land surface

Lithologic description from Florida Geological 

Survey for W-17591. Packer and aquifer test 

data from Bennett (2003).

Upper boundary of Upper Floridan aquifer 

and flow zones below depth of 1,665 feet 

are from Bennett (2003)

Lithologic 

description 

not used

SC =

1.0 gpm/

foot

SC =

77 gpm/

foot

SC =

0.6 gpm/

foot

K =

51 feet/

day

K =

10 feet/

day

Base from U.S. Geological Survey digital data

State Plane Florida East, Datum NAD 83

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

This map was printed on an electronic plotter directly from digital files. Dimensional calibration may vary 

between electronic plotters and between X and Y directions on the same plotter, and paper may change 

size due to atmospheric conditions; therefore, scale and proportions may not be true on plots of this map.

For sale by U.S. Geological Survey, Information Services, Box 25286, Federal Center, Denver, CO 80225, 

1–888–ASK–USGS

Digital files available at http://dx.doi.org/10.3133/sim3288

Suggested Citation: Reese, R.S., 2014, Hydrogeologic framework and geologic structure of the Floridan 

aquifer system and intermediate confining unit in the Lake Okeechobee area, Florida: U.S. Geological 

Survey Scientific Investigations Map 3288, scale 1:24,000 [http://dx.doi.org/10.3133/sim3288].

ISSN 2329-132X (online)

Scientific Investigations Map 3288

Sheet 2 of 8

Pamphlet accompanies map

Prepared in cooperation with the

U.S. Army Corps of Engineers

U.S. Department of the Interior

U.S. Geological Survey

Stratigraphic and hydrogeologic section B–B'

By

Ronald S. Reese

2014

Map location

F l o r i d a