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

X

B'

X'

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

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

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

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

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 =

39 feet/

day

SC =

38 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

Open-hole interval 

 over which flow 

 was evaluated

Micritic

Moldic porosity Crystals or 

 crystalline

Gypsum

Section of fractured limestone that

 may not be connected to permeable

 zone below

Upper Floridan aquifer - 

 presence of groundwater 

 production uncertain

0

0

2.5

2.5

5.0 MILES

5.0 KILOMETERS

Quartz sandstone Silt or siltstone

Floatstone

Glauconite

Phosphate

 (common or 

 abundant;

 greater 

 than 10%)

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 or HCAL

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 

C1 and C2 Calipers from formation microscanner tool

(90 degrees apart) in. Inch

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

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 no flow zones were identified

Flow zone interpreted based on increase in flow during drilling

 or a packer hydraulic test or both

Open-hole interval over which no flow zones were identified

Breccia Fractures

Surficial aquifer system

Upper Floridan 

aquifer

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

20.0 Miles 15.9 Miles 32.8 Miles 35.2 Miles Sections 

A–A’ and D–D'

Sections 

C–C',

D–D', and E–E’

7.0 Miles

(not to scale)

OKF-100 (W-18255)

LANDMSL: 19.22 feet

GR (spliced)

0 (GAPI) 200

HCAL-1 (spliced)

0 (IN) 20

XCAL-2

0 (IN) 20

YCAL-2

0 (IN) 20

Depth, in feet belowland surface

Lithology

Flow zonesHydrogeologic units

Lithologic description from Florida Geological 

Survey for W-18255. Packer test data from

U.S. Army Corps of Engineers (2002). Aquifer 

test data are from well EXKR-1 at same site and 

are from U.S. Army Corps of Engineers (2004). Lithologic description not used

†Upper boundary of section of highly fractured 

limestone, as indicated by borehole video and 

geophysical caliper data

†

SC =

0.4 gpm/

foot

SC =

0.08 gpm/

foot

SC =

128 gpm/

foot

SC =

16 gpm/

foot (preacidization)

K =

29 feet/day 

(postacidization)

HIF-42 (W-18812)

LANDMSL: 25.75 feet

GR-1

0 (GAPI) 150

XCAL-1

0 (IN) 20

GR-2

0 (GAPI) 100

XCAL-2

0 (IN) 20

YCAL-2

Depth, in feet belowland surface

0 (IN) 20

Lithology

Flow zonesHydrogeologic units

Lithologic description not used

Boundaries of Upper Floridan aquifer

from E. Richardson, 2010, South 

Florida Water Management District, 

DBHYDRO database 

SC =

6.4 gpm/

foot

SC =

8.0 gpm/

foot

SC =

5.0 gpm/

foot

SC =

0.2 gpm/

foot

K =

22 feet/day

K =

82 feet/

day

OKF-105 (W-18777, S65C)

LANDMSL: 32.3 feet

GR

0 (GAPI) 150

XCAL-2

0 (IN) 20

YCAL-2

0 (IN) 20

C1-1

5 (IN) 25

C2-1

5 (IN) 25

Depth, in feet belowland surface

LithologyFlow zonesHydrogeologic units

Lithologic description from Florida Geological 

Survey for W-18777 and from Sunderland and 

others (2011). Packer and aquifer test data from 

Sunderland and others (2011).

Hydrogeologic unit boundary from Sunderland 

and others (2011) 

SC =

4.1 gpm/

foot

SC =

0.14 gpm/

foot

SC =

0.93 gpm/

foot

No formation 

drawdown 

indicated

at pumping 

rate of 120 gpm

K =

0.5 foot/

day

ROMP29A, W-18535

LANDMSL: 128 feet

CAL

0 (IN) 20

GAMM

0 (CPS) 150

Depth, in feet belowland surfaceLithologyHydrogeologic units

Lithologic description from Ward and others 

(2003) for continuously cored interval from 

412 to 1,244 feet. Description of remaining 

interval in well is from Florida Geological 

Survey for W-18535. Packer test data from 

Mallams and Lee (2005). 

Major permeable zone boundaries from 

Mallams and Lee (2005) and primarily based 

on hydraulic packer tests and lithology. The 

Upper Floridan aquifer is referred to as the 

"Tampa-Suwannee permeable zone of the 

Upper Floridan aquifer," and the Avon Park 

permeable zone is referred to as the "Avon 

Park permeable zone of the Upper Floridan 

aquifer" (Mallams and Lee, 2005).

K =

0.3 foot/day

K =

7 feet/day

K =

0.1 foot/day

K =

0.07 foot/day

K =

0.4 foot/day

K =

0.3 foot/day

K =

0.2 foot/day

K =

0.4 foot/day

K =

0.3 foot/day

K =

2 feet/day

K =

66.3 feet/day

K =

41.4 feet/day

K =

52.4 feet/day

K =

3.4 feet/day

K =

0.89 foot/day

K =

0.12 foot/day

K =

0.15 foot/day

K =

0.2 foot/day

K =

0.4 foot/day

HASR-DZMW (W-17986, PB-1766)

LANDMSL: 12.5 feet

XCAL-1

0 (IN) 20

YCAL-1

0 (IN) 20

GR (spliced)

0 (GAPI) 150

CAL-2

0 (IN) 20

Depth, in feet belowland surfaceLithology

Flow zones

Hydrogeologic units

Lithologic description from Florida Geological 

Survey for W-17986. Packer and aquifer test 

data from well EXW-1 at same site (Bennett 

and others, 2001).

SC =

11 gpm/

foot

SC =

23 gpm/

foot

K =

39 feet/

day

PBF-7 (W-17542, PB-1777)

LANDMSL: 19.17 feet

GR (spliced)

0 (GAPI) 150

CAL (spliced)

0 (IN) 30

Depth, in feet belowland surfaceLithology

Flow zones

Hydrogeologic units

Lithologic description from Florida Geological 

Survey for W-17542. Packer and aquifer test data 

from Lukasiewicz and others (2001).Lithologic description not used

Flow zone from Lukasiewicz and others (2001)

Upper boundary of Upper Floridan aquifer from 

Lukasiewicz and others (2001) 

†

†

†

†

K =

22 feet/

day

K =

12 feet/

day

K =

38 feet/

day

K =

257 feet/

day

K =

6.5 feet/

day

K =

842 feet/

day

K =

39 feet/

day

Packer and aquifer test data from

CH2M HILL (2008).

Scientific Investigations Map 3288

Sheet 6 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 X–X'

By

Ronald S. Reese

2014

Altitude, in feet below NGVD 1929

Land surface

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

Land surface

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

–100

0

–200

–300

–400

–500

–600

–700

–800

–900

–1,000

–1,100

–1,300

–1,200

–1,400

–1,500

–1,600

–1,700

–1,800

–100

0

–200

–300

–400

–500

–600

–700

–800

–900

–1,000

–1,100

–1,300

–1,200

–1,400

–1,500

–1,600

–1,700

–1,800

–100

0

–200

–300

–400

–500

–600

–700

–800

–900

–1,000

–1,100

–1,300

–1,200

–1,400

–1,500

–1,600

–1,700

–1,800

–1,900

–2,000

–100

0

–200

–300

–400

–500

–600

–700

–800

–900

–1,000

–1,100

–1,300

–1,200

–1,400

–1,500

–1,600

–1,700

–1,800

–1,900

–2,000

–2,100

–2,200

–2,300

–2,400

–2,500

–100

0

–200

–300

–400

–500

–600

–700

–800

–900

–1,000

–1,100

–1,300

–1,200

–1,400

–1,500

–1,600

–1,700

–1,800

–1,900

–2,000

–2,100

–2,200

–2,300

–100

0

–200

–300

–400

–500

–600

–700

–800

–900

–1,000

–1,100

–1,300

–1,200

–1,400

–1,500

–1,600

–1,700

–1,800

–1,900

–2,000

–2,100

–2,200

–2,300

–2,400

–2,500

NORTHWEST

X

SOUTHEAST

X ́

Base from U.S. Geological Survey digital data

State Plane Florida East, Datum NAD 83

Well-to-well

connectivity is 

uncertain

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)

Map location

F l o r i d a