COVER PHOTOGRAPH: Water towers located at Sage Mill

Industrial Park in the Breezy Hill area, Aiken County, South Carolina

Photograph by: Larry G. Harrelson
Ground-Water Levels in the Floridan-Midville

Aquifer in the Breezy Hill Area, Aiken and

Edgefield Counties, South Carolina, 

April 1999–November 2000

By Larry G. Harrelson, W. Fred Falls, and David C. Prowell

U.S. Geological Survey

Water-Resources Investigations Report 02-4075

Prepared in cooperation with

AIKEN COUNTY, SOUTH CAROLINA

Columbia, South Carolina

2002
U.S. DEPARTMENT OF THE INTERIOR

GALE A. NORTON, Secretary

U.S. GEOLOGICAL SURVEY

Charles G. Groat, Director

Use of trade, product, or firm names in this publication is for descriptive purposes only 

and does not imply endorsement by the U.S. Geological Survey

For additional information 

write to: 

District Chief 

U.S. Geological Survey

Suite 129

720 Gracern Road

Columbia, SC 29210-7651

Additional information about water resources in South Carolina is available on the 

internet at http://sc.water.usgs.gov

Copies of this report can be 

purchased from:

U.S. Geological Survey

Branch of Information Services

Box 25286

Denver, CO 80225-0286

888-ASK-USGS
Contents III

CONTENTS

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

Introduction............................................................................................................................................................................... 2

Purpose and Scope .......................................................................................................................................................... 2

General Description of the Study Area ........................................................................................................................... 2

Previous Investigations ................................................................................................................................................... 4

Acknowledgments........................................................................................................................................................... 5

Geology..................................................................................................................................................................................... 5

Paleozoic Crystalline Rocks............................................................................................................................................ 5

Upper Cretaceous Strata.................................................................................................................................................. 5

Tertiary Strata.................................................................................................................................................................. 7

Hydrogeology ........................................................................................................................................................................... 7

Database Development and Data Collection ............................................................................................................................ 7

Well-Numbering System................................................................................................................................................. 8

Aquifer Assignments....................................................................................................................................................... 8

Ground-Water Levels................................................................................................................................................................ 8

Precipitation .................................................................................................................................................................... 9

Evapotranspiration .......................................................................................................................................................... 9

Surface-Water Flow ........................................................................................................................................................ 9

Ground-Water Withdrawals ............................................................................................................................................ 9

Floridan-Midville Aquifer............................................................................................................................................. 13

Summary ................................................................................................................................................................................. 16

Selected References ................................................................................................................................................................ 17

Appendix—Water-level elevations for wells in the Breezy Hill area, Aiken and Edgefield Counties, South Carolina, 

April 1999-November 2000................................................................................................................................................. 21

PLATES

[Plates in back pocket]

1. Topography of the Breezy Hill area, Aiken and Edgefield Counties, South Carolina.

2. Generalized geology of the Breezy Hill area, Aiken and Edgefield Counties, South Carolina.

3. Configuration of the top of crystalline bedrock in the Breezy Hill area, Aiken County, South Carolina.

4. Configuration of the average water-level surface for the Floridan-Midville aquifer in the Breezy Hill area, Aiken and 

Edgefield Counties, South Carolina, April 1999–November 2000.

5. Average saturated thickness of the Floridan-Midville aquifer in the Breezy Hill area, Aiken County, South Carolina, 

April 1999–November 2000.

FIGURES

1. Map showing location of the Breezy Hill area, Aiken and Edgefield Counties, South Carolina ..................................... 3

2. Chart showing generalized correlation of the geology and hydrogeology in the Breezy Hill area, Aiken and 

Edgefield Counties, South Carolina.................................................................................................................................. 4

3. Diagram showing dip-oriented correlation of lithostratigraphic and hydrostratigraphic units from core holes 

AK-2448 to AK-2449, Aiken County, South Carolina ..................................................................................................... 6

4-8. Graphs and table data showing:

4. Long-term normal monthly precipitation, recorded monthly precipitation, and departure from long-term 

normal monthly precipitation Aiken County, South Carolina, April 1999–November 2000 .................................... 10

5. Monthly average flow at Little Horse Creek near Graniteville, South Carolina, October 1989–November 2000.... 11

6. Long-term monthly average flow, recorded monthly average flow, and departure from long-term monthly 

average flow at Little Horse Creek near Graniteville, South Carolina, April 1999–November 2000....................... 12
IV Contents

7. Monthly total ground-water withdrawals for the Breezy Hill Water and Sewer Company, Aiken County, 

South Carolina, 1989–2000 ........................................................................................................................................14

8. Long-term monthly average ground-water withdrawals, monthly total ground-water withdrawals, and departure 

from long-term monthly average ground-water withdrawals for the Breezy Hill Water and Sewer Company, 

Aiken County, South Carolina, 1999–2000................................................................................................................15

TABLE

1. Selected well data for production and observation wells owned by the Breezy Hill Water and Sewer Company, 

Aiken County, South Carolina ............................................................................................................................................13

CONVERSION FACTORS, DATUMS, AND ACRONYMS

Multiply By To obtain

Length

inch (in.) 25.4 millimeter

foot (ft) 0.3048 meter

mile (mi) 1.609 kilometer

Area

square mile (mi2) 2.590 square kilometer

Volume

gallon (gal) 3.785 cubic decimeter

million gallon (Mgal) 3.785,000 liter

Flow

gallon per day (gal/d) 0.00379 cubic meter per day

gallon per minute (gal/min) 0.06309 liter per second

million gallons per day (Mgal/d) 3.785 cubic meters per day

cubic foot per second (ft3

/s) 0.02832 cubic meter per second

inch per year (in/yr) 25.4 millimeter per year

Sea level: In this report, “sea level” refers to the National Geodetic Vertical Datum of 1929—

a geodetic datum derived from a general adjustment of the first-order level nets of the United 

States and Canada, formerly called Sea Level datum of 1929.

Latitude and longitude coordinates for the water-level measurements used in the construction of 

plate 4 are referenced to the North American Datum of 1927 (NAD 27).

Latitude and longitude coordinates for wells in the appendix are referenced to the North American 

Datum of 1983 (NAD 83).

BHW&S Breezy Hill Water and Sewer Company

ET Evapotranspiration 

GIS Geographical Information System

GPS Global Positioning System

NOAA National Oceanic and Atmospheric Administration 

SCDHEC South Carolina Department of Health and Environmental Control

SCDNR South Carolina Department of Natural Resources

USGS United States Geological Survey
Abstract 1

Ground-Water Levels in the Floridan-Midville Aquifer in 

the Breezy Hill Area, Aiken and Edgefield Counties, 

South Carolina, April 1999–November 2000

By Larry G. Harrelson, W. Fred Falls, and David C. Prowell

ABSTRACT

The Breezy Hill area in Aiken and Edgefield 

Counties of west-central South Carolina is a rapidly growing region in need of increasing amounts 

of ground water. From 1995 to 1998, the local 

water utility increased ground-water withdrawals 

in the Breezy Hill area from 1.4 to 2.1 million 

gallons per day to meet water-supply demands. 

As development continues, future demands for 

ground water will likely put stress on the surfaceand ground-water resources of the area. To address 

this issue, the U.S. Geological Survey, in cooperation with Aiken County, compiled and interpreted 

geologic and hydrologic data needed to map the 

ground-water system in the Breezy Hill study area.

The Breezy Hill study area consists of four 

interfluvial areas comprising the regions between 

Horse and Little Horse Creeks, Little Horse and 

Hightower Creeks, Hightower Creek and Franklin 

Branch, and Franklin Branch and Mims Branch. 

Across the interfluvial areas, the average elevation 

of the water-level surface ranged from 200 to 

480 feet above sea level, and the average saturated 

thickness of the Floridan-Midville aquifer ranged 

from less than 20 to 70 feet thick. A water-level 

contour map of the surface of the Floridan-Midville 

aquifer indicates that recharge to the aquifer occurs 

mainly within the interfluves. Recharge is derived 

principally from precipitation, although there is 

some potential for ground-water recharge from 

underlying crystalline rocks. Ground water 

discharges along the flanks of the interfluves into 

the bounding streams where the elevations of the 

ground water and streams coincide.

From April 1999 to November 2000, calculated long-term normal precipitation totaled about 

84.0 inches; however, actual recorded precipitation totaled 69.2 inches, representing about a 17.6 

percent decrease in precipitation during this period. 

Published estimates of annual evapotranspiration 

range from 30 to 35 inches.

A U.S. Geological Survey surface-water 

gaging station located near the center of the study 

area on Little Horse Creek monitors runoff from a 

drainage area of 26.6 square miles. Average annual 

flow for the station for water years 1990-2000 was 

33.8 cubic feet per second. From April 1999 to 

November 2000, the monthly average flow was 

less than the average monthly flow for the longterm record, excluding December 1999 to March 

2000 when no data were collected. Monthly average flow for Little Horse Creek exceeded the 

normal monthly flow during June and July 1999.
2 Ground-Water Levels in the Floridan-Midville Aquifer in the Breezy Hill Area, Aiken and Edgefield Counties, South Carolina, 

April 1999–November 2000

Ground water in the Breezy Hill area is principally withdrawn from the unconfined FloridanMidville aquifer. Ground-water withdrawals by the 

local water utility increased 37 percent from 1989 to 

2000 (315.2 to 500 million gallons, respectively). 

From January 1999 to December 2000, the utility 

exceeded the long-term monthly average groundwater withdrawals for every month except September and December 2000. Calculated long-term 

monthly ground-water withdrawals by the utility 

for a 20-month period from April 1999 to November 2000 totaled 674 million gallons; however, 

actual ground-water withdrawals totaled 883 

million gallons, which is 31 percent more than the 

long-term average ground-water withdrawals for 

the production wells.

Published estimates of average annual 

ground-water recharge rates for the study area 

range from 13 to 15 inches per year. A base-flow 

recession analysis of streamflow data for Little 

Horse Creek provided an estimated recharge rate of 

14.9 inches per year for the drainage area. Using an 

estimated average porosity ranging from 30 to 35 

percent observed in sand-aquifer cores, the average 

annual recharge of 13 to 15 inches would cause a 

3.6- to 4.1-foot water-level change to the saturated 

thickness of the aquifer, if applied instantaneously. 

The water-level declines observed in wells from 

April 1999 to November 2000 approximated an 

average decline of 4 feet.

From November 1999 to November 2000, 

ground-water levels in six wells near utility pumping centers declined 2 to 5 feet. Long-term waterlevel declines of 10.27 and 11.50 feet were 

measured in two wells between May 1992 and 

April 2000, respectively.

INTRODUCTION

The Breezy Hill area is a rapidly growing region 

of Aiken and Edgefield Counties, S.C. Ground water is 

the primary source of water supply in the area. From 

1995 to 1998, the local water utility, Breezy Hill Water 

and Sewer Company, increased ground-water withdrawals in the Breezy Hill area from 1.4 Mgal/d (Newcome, 

1995) to 2.1 Mgal/d (Newcome, 2000). In addition, 

domestic, irrigation, and industrial production wells collectively withdrew an unknown volume of ground water. 

As residential, industrial, and other forms of development continue, future increased demands for ground 

water will put additional pressure on the water resources 

of the area.

This study was designed to investigate the groundwater resources in the Breezy Hill area. To address these 

issues, the U.S. Geological Survey (USGS), in cooperation with Aiken County, compiled and interpreted the 

hydrologic data needed to map the ground-water system 

in the study area. Water-resources planners can use this 

information in their decision-making processes to make 

informed decisions on further development of the 

ground-water resources.

Purpose and Scope

The purpose of this report is to describe the 

configuration of the average water-level surface and to 

determine the average saturated thickness of the Floridan-Midville aquifer beneath the Breezy Hill area. This 

report is limited to the study of the Tertiary- and Upper 

Cretaceous-age sediments that make up the sedimentary aquifer beneath the study area. The crystalline bedrock, which forms the basal limit of this study, yields 

far less water than the Tertiary- and Upper Cretaceousage sediments and may not be suitable for municipal or 

industrial water supplies in the area.

General Description of the Study Area

The Breezy Hill study area is located near Graniteville, S.C., and occupies approximately 57 mi2 in the 

northwestern part of Aiken County and in the southeastern part of Edgefield County, S.C. (fig. 1). The 

Breezy Hill area lies east-northeast and adjacent to the 

city of North Augusta and is approximately 10 mi 

west-northwest of the city of Aiken. The study area 

includes the unincorporated communities of Graniteville, Clearwater, and parts of the city of North Augusta. 

The inner margin of the Coastal Plain, identified by the 

Fall Line, forms the bounding limits of the study area 

to the north. Horse Creek forms the bounding limits to 

the northeast and south, and U.S. Highway 25 to the 

west (plate 1).

The study area consists of four interfluvial areas 

comprising the regions between Horse and Little Horse 

Creeks, Little Horse and Hightower Creeks, Hightower 

Creek and Franklin Branch, and Franklin Branch and 

Mims Branch Creeks (plate 1). The topography of the 

region is in an intermediate stage of erosion, which is 

characterized by flat interfluvial divides and narrow 

stream valleys with up to 500 ft of relief (plate 1).
Introduction 3

Figure 1. Location of the Breezy Hill area, Aiken and Edgefield Counties, South Carolina.
4 Ground-Water Levels in the Floridan-Midville Aquifer in the Breezy Hill Area, Aiken and Edgefield Counties, South Carolina, 

April 1999–November 2000

Sediments in the study area include Tertiaryand Upper Cretaceous-age strata, and consist of predominantly interlayered sequences of sand and clay 

(Nystrom and others, 1986). The sedimentary sequence 

unconformably overlies igneous and metamorphic 

rocks of Paleozoic age (Chowns and Williams, 1983) 

(fig. 2). In many places, streams have eroded through 

the sediments to expose bedrock in the valley floors 

(plate 2).

Horse, Little Horse, and Hightower Creeks, 

and Franklin and Mims Branch, as well as many smaller 

streams, intercept ground-water flow in the study area. 

Although, there is some potential for ground-water 

recharge from underlying crystalline rocks, recharge 

for the unconfined Floridan-Midville aquifer is derived 

principally from precipitation that 

occurs within the interfluve. Only 

a small percentage of total precipitation recharges the aquifer 

beneath the study area. Recharge 

to the aquifer is constrained by the 

amount of precipitation not lost to 

evapotranspiration or runoff and is 

thus available to recharge the aquifer. The vertical hydraulic conductivity and transmissivity of the 

surficial deposits or other strata 

in the recharge area control the 

amount of water that can percolate 

downward and move away from 

the recharge area in response to 

the prevailing hydraulic gradient 

(Fetter, 1980).

Previous Investigations

The hydrogeology of the 

Coastal Plain sediments in the 

Breezy Hill area has been described 

in general terms in regional hydrogeologic studies by Aucott and others (1987) and Aadland and others 

(1995). The area was described in a 

study of ground-water flow and 

stream- aquifer relations near the 

inner margin of the Coastal Plain in 

Georgia and South Carolina by 

Faye and Mayer (1990). 

Aadland and others (1995) discussed, in general 

terms, the lithostratigraphy and hydrostratigraphy in 

this region of South Carolina. The lithostratigraphy of 

the study area has been mapped or described in various 

studies including Hammond (1883), Cooke (1936), 

Lang (1940), Smith (1949), Siple (1967), de Araujo 

and Filho (1975), Metzgar (1977), and Bramlett 

(1980). Other stratigraphic works published for this 

area are by Sloan (1904, 1907, and 1908), Cooke and 

MacNeil (1952), Colquhoun and Johnson (1968), 

Colquhoun and others (1969, 1982, and 1983), Bishop 

(1982), Campbell (1982), Willoughby (1983, 1985a, 

1985b), Colquhoun and Steele (1986) and Nystrom and 

others (1986).

"Upland" Unit

Barnwell Group

Huber/Congaree

Formation(s)

"Middendorf" Formation

Crystalline Rocks

Donoho Creek Formation

Floridan-Midville Aquifer

COASTAL PLAIN SEDIMENTS

TERTIARY

UPPER CRETACEOUS

PALEOZOIC EOCENE MIOCENE(?)

MIDDLE UPPER

Black Creek Group

UNDIFFERENTIATED

SYSTEM

SERIES

GEOLOGY

(Christopher and others, 2000; 

Prowell and Chistopher, 2000)

HYDROGEOLOGY

(Aadland and others, 1995)

Figure 2. Generalized correlation of the geology and hydrogeology in the Breezy 

Hill area, Aiken and Edgefield Counties, South Carolina.
Geology 5

Krambis (2000) described the stratigraphy and 

hydrogeology, and developed a predevelopment numerical flow model of the Breezy Hill area. The steady-state 

three-dimensional flow model was designed to predict 

the natural system dynamics and was based on 1960-90 

water-level data. Clarke and West (1997, 1998) developed numerical flow models to evaluate flow conditions 

for predevelopment and predevelopment through 1992 

near the Savannah River and the potential for transriver 

flow beneath the Savannah River. These reports describe 

various features and characteristics of the geology, 

hydrogeology, and stream-aquifer relations near the 

Savannah River site in Georgia and South Carolina.

Acknowledgments

The authors would like to thank Charles Hilton, 

and the Board of Directors of Breezy Hill Water and 

Sewer Company, for providing invaluable assistance, 

information, data, and access to wells under their jurisdiction. In particular, appreciation is extended to South 

Carolina State Senator Thomas L. Moore for his efforts 

in securing financial support for this investigation. The 

authors also extend their appreciation to the local landowners, drillers, and managers of municipal waterworks for providing access to and helpful information 

on the wells utilized in this investigation. The authors 

recognize the South Carolina Department of Health 

and Environmental Control (SCDHEC) and the South 

Carolina Department of Natural Resources (SCDNR) 

for supplying data for this study. Appreciation also is 

extended to Dr. Ralph H. Willoughby, (SCDNR) for 

sharing his understanding of the geology within the 

study area.

GEOLOGY

The geology of the study area is described in 

general terms with geologic units discussed in ascending order (figs. 2 and 3). Although the Paleozoic igneous and metamorphic rocks are included in this 

discussion, the Upper Cretaceous and Tertiary sedimentary beds that overlie the Paleozoic rocks are the 

primary focus of this investigation.

Paleozoic Crystalline Rocks

In the southeastern Coastal Plain, Paleozoic 

igneous and metamorphic rock units are commonly 

called “crystalline bedrock,” and form a major hydrologic barrier at the base of the Coastal Plain sedimentary wedge (plate 3). Crystalline bedrock in the study 

area generally consists of granite, gneiss, and schist 

(fig. 3). These rocks are part of the Charlotte Belt as 

described by Overstreet and Bell (1965) and the Kiokee Belt of Crickmay (1952). Chemical weathering of 

igneous and metamorphic rocks yields a reduced-density residuum called saprolite. Saprolite overlies the 

fresh rock beneath the Upper Cretaceous and Tertiary 

strata and creates a zone of low permeability (confining 

unit) at the base of the highly permeable sediments.

Upper Cretaceous Strata

The Upper Cretaceous sediments of the Breezy 

Hill area consist of two formations formerly called the 

Middendorf Formation and the Donoho Creek Formation of the Black Creek Group (Prowell, 1994). Recent 

evidence suggests that: (1) the name “Middendorf” was 

incorrectly applied to the lower strata, and (2) all of the 

Upper Cretaceous strata in the study area are part of the 

Black Creek Group (Christopher and others, 2000; 

Prowell and Christopher, 2000). The name “Middendorf” was retained for the lower formation because a 

new name has yet to be established. The name is shown 

in quotes to denote the improper usage and correlation. 

The base of the Upper Cretaceous strata is 

marked by angular to rounded cobbles, pebbles, and 

coarse-grained sand resting upon saprolite of the 

underlying Paleozoic rocks (Nystrom and others, 

1986). Upper Cretaceous sediments pinch out in up-dip 

areas of Edgefield and northern Aiken Counties where 

they are overlapped by middle Eocene sediments 

(Nystrom and others, 1986). 

Both of the Upper Cretaceous formations consist 

of fine- to very coarse-grained, poorly sorted, angular 

to subangular, quartz sand containing various amounts 

of micaceous, sandy kaolin. The “Middendorf” Formation is characterized by quartz gravel and large festoon 

crossbeds. Discontinuous lenses of kaolin are pesent at 

or near the top of the “Middendorf” strata. The Donoho 

Creek Formation of the Black Creek Group is characterized by local beds of fine-grained, well-sorted sand, 

locally discontinuous clay laminae, and low-angle 
6 Ground-Water Levels in the Floridan-Midville Aquifer in the Breezy Hill Area, Aiken and Edgefield Counties, South Carolina,

April 1999-November 2000

Huber/Congaree

Formation(s)

Barnwell Group

Cystalline Bedrock

AK-2448 AK-2449

EXPLANATION

LITHOSTRATIGRAPHY

DEPTH, IN FEET BELOW

LAND SURFACE

ELEVATION, IN FEET

ABOVE SEA LEVEL GAMMA RAY (American Petroleum Institute) LONG NORMAL

Lithology

DEPTH, IN FEET BELOW LAND SURVACE

ELEVATION, IN FEET

ABOVE SEA LEVEL GAMMA RAY (American Petroleum Institute) LONG NORMAL

LITHOLOGY

"Upland" Unit

"Middendorf"

Formation

Donoho Creek

Formation

100

50

150

200

250

300

400

350

450

1,000

2,000

1,500

2,500

3,000

3,500

500

100

50

150

200

250

300

350

2,000

4,000

6,000

8,000

10,000

102030405060708090

100110120130140150160

480470460450440430420410400390380370360350340330

30405060708090

100110120130140150160

480470460450440420400390370360340330

170180190200210230240250260280290300310320330

320310300290280260250240230210200190170160

A A'

No recoverySandSand andgravelGravelInterbeddedsand and clay

Clayey sandClay

GraniteGneiss/schist

Silty clayClayey siltUnconformitylag

HYDROSTRATIGRAPHY Floridan-Midville Aquifer Crystalline Bedrock

220270

410380270220

Black Creek Group

1020

430350180

Figure 3. Dip-oriented correlation of lithostratigraphic and hydrostratigraphic units from core holes AK-2448 to AK-2449, Aiken County, South Carolina.
Database Development and Data Collection 7

crossbeds. Scattered throughout these sediments are 

fine- to coarse-grained, dark, heavy minerals that tend 

to concentrate along bedding plains. Beds abundant in 

kaolin balls of various sizes also are common. A massive,

thick bed of silty, white kaolin is present at the top of 

the Donoho Creek sediments near North Augusta 

(Willoughby, 1986) and north of Aiken where the bed 

was dated as late Campanian, based on fossil pollen 

(written commun., R.A. Christopher, Clemson 

University, 1980, 1999).

Tertiary Strata

The stratigraphic contact between the Upper 

Cretaceous strata and the overlying Tertiary strata is an 

erosional unconformity (Willoughby, 1986; Prowell, 

1994). Pisolithic kaolin boulders are present at this 

contact near Graniteville (Nystrom and Willoughby, 

1982) and at the northern edge of the town of Aiken. 

These boulders are thought to reflect periods of extensive erosion that occurred during a sedimentary hiatus.

Tertiary sediments include the Huber/Congaree 

Formation(s), Barnwell Group, and the “Upland” Unit 

(fig. 2). All three geologic units consist of sand and 

clay deposited under differing depositional environments. Although present in down-dip areas, limestone 

and other carbonate lithologies are not present in the 

Breezy Hill area.

 The Huber/Congaree Formation(s) derives its 

name from work by Prowell (1994), who recognized 

intertongued marine and nonmarine middle Eocene beds 

in the North Augusta-Aiken area. Previously, the name 

Huber had been applied to the nonmarine strata (Buie, 

1978) whereas the name Congaree had been applied to 

the marine strata (Siple, 1967). The Congaree strata is 

characterized by well- to moderately sorted, angular to 

subrounded, fine- to coarse-grained sand with thin clay 

laminae. Most sand beds have little to no interstitial clay 

and may contain vertical sand-filled burrows of marine 

animals. The Huber strata typically consists of subangular to angular, poorly sorted, medium- to very coarsegrained sand with some quartz granules and white kaolin 

balls. Crossbedding and cut-and-fill channeling is common. The Huber strata typically forms the top of the 

formation, which is characterized by discontinuous beds 

of hard kaolin (Prowell, 1994).

The Barnwell Group in the study area consists of 

two formations, Dry Branch and Tobacco Road, and is 

of late Eocene age (Huddlestun and Hetrick, 1979, 

Huddlestun, 1982). A thin layer of flat pebbles marks 

the contact between the two formations, which are not 

differentiated in this report. The basal Barnwell stratum 

consists of well-sorted, very fine- to medium-grained 

sand with local, thinly interbedded clay layers. The 

upper Barnwell strata consists of poorly sorted, mediumto very coarse-grained sand with moderate to no interstitial clay (Nystrom and others, 1986). Thin clay wisps 

and clay-lined burrows of marine animals characterize 

these upper strata. 

The “Upland” Unit is an informal geologic unit 

established by Nystrom and Willoughby (1982) to 

describe poorly sorted, medium- to coarse-grained, 

angular to subangular, clayey grit with abundant granules, pebbles, and cobbles. This unit is characterized by 

large gravel and sand-sized white clay speckles derived 

from weathered feldspar.

HYDROGEOLOGY

Aadland and others (1995) applied the name 

Floridan-Midville aquifer to the Coastal Plain sediments near the inner margins of the Coastal Plain, 

including the study area. The name, Floridan-Midville 

aquifer, is applied in this report to the entire sequence 

of Coastal Plain sediments between land surface and 

the top of crystalline bedrock. Although clayey sand 

and silty clay are interbedded with the porous, permeable sands in the Upper Cretaceous- and Tertiary-age 

geologic units, these sediments are generally lenticular 

and laterally discontinuous. Therefore, the entire 

Coastal Plain sequence is considered one aquifer in the 

study area (Aucott and others, 1987; Faye and Mayer, 

1990, Aadland and others, 1995).

DATABASE DEVELOPMENT AND DATA 

COLLECTION

Current and historical well-construction data 

were compiled from SCDNR, SCDHEC, and USGS 

databases. These data were reviewed for potential 

water-level measurement sites. Published well data 

from previous inventories in the study area also were 

examined.

Well-construction data from the SCDNR and 

SCDHEC originated from water well records provided 

by local well drillers. These data were considered reliable; however, no inspections of the wells were performed. Some well-construction data were obtained by 

conversations with the individual landowners and area 

well drillers.
8 Ground-Water Levels in the Floridan-Midville Aquifer in the Breezy Hill Area, Aiken and Edgefield Counties, South Carolina, 

April 1999–November 2000

Latitude and longitude for each well were 

established utilizing a Global Positioning System (GPS). 

The horizontal accuracy provided by the GPS was 

about 30 ft from the actual location. Land-surface 

elevation for each well site was calculated by plotting 

latitude and longitude for the site on a USGS 1:24,000 

Digital Line Graph topographic map and utilizing a 

Geographic Information System (GIS) to assign the elevation. This method maintained an unbiased approach 

to the assignment of the land-surface elevation for the 

well sites. It should be noted that the accuracy of the 

assigned land-surface elevations is one-half of the contour interval published for the maps. Thus, the landsurface elevation accuracy assigned for each well is 5 ft.

Well-Numbering System

The USGS and SCDNR share a common wellnumbering system that is referred to as the USGS identifier in this report (see appendix). Wells inventoried in 

South Carolina are sequentially numbered in each 

county using an alphanumeric well designation. The 

alphabetic prefix refers to the county and the number 

refers to the chronological order in which wells were 

inventoried in that county. Thus, the first well inventoried in Aiken County is designated AK-1.

Aquifer Assignments

Elevations of the tops of the lithostratigraphic 

units used in this report are based on the geologic mapping of the study area by the SCDNR (Willoughby, 

1983, 1984, 1985a, and 1986) (plate 2). The elevation 

of the crystalline bedrock was mapped from data collected from core and auger holes, and from field investigations (plate 3).

Elevations of the tops of the Upper Cretaceous 

and Tertiary units and crystalline bedrock were entered 

in a GIS to create digital three-dimensional surfaces. 

GIS digital surfaces were compared to the elevation of 

the open or screened interval(s) in each well to determine the aquifer assignment for the well. Wells assigned 

to the Floridan-Midville aquifer are open to the Upper 

Cretaceous and Tertiary sediments. If a well was open 

primarily to the Upper Cretaceous and Tertiary sediments with only a small part open to the crystalline bedrock, then it was assumed that the water-level elevation 

measured in that well represented the Floridan-Midville 

aquifer. If a well was open or screened exclusively in the 

crystalline bedrock or if the construction data for a well 

could not be verified, then water levels from the well 

were not used to map the water-level surface of the 

Floridan-Midville aquifer. Data collected and verified 

for the 67 wells used in this investigation are listed in the 

appendix.

GROUND-WATER LEVELS 

In the Breezy Hill area, ground-water levels and 

topographic elevations were used to map the average 

elevation of the water-level surface for the unconfined 

Floridan-Midville aquifer (plate 4). In this way, waterlevel elevations were depicted at or below land surface 

everywhere on the map, resulting in a water-level map 

that mirrors the topography of the land surface. For 

example, water-level contours along the steep stream 

valley of Little Horse Creek show numerous deflections 

owing to the substantial change in topographic elevation 

along the stream. Construction of the map showing average saturated thickness was accomplished by utilizing a 

GIS computer program that calculated and then plotted 

the difference in elevation between the average water 

level and the top of the crystalline bedrock (plate 5).

The water-level surface for the Floridan-Midville 

aquifer represents the top of the saturated part of the 

aquifer, which is assumed to be unconfined. Ground 

water that saturates the Floridan-Midville aquifer 

moves in response to differences in hydraulic head. 

The direction of ground-water flow can be inferred 

from water-level contour lines. Flow direction is perpendicular to the contour lines with ground water moving in 

the direction of declining hydraulic head. Flow lines 

depict the idealized path followed by water particles as 

they move through the aquifer (Heath, 1982).

During the investigation, water levels were measured in 67 wells in the study area (appendix). Groundwater-level measurements were collected intermittently 

during this investigation. Synoptic ground-water-level 

measurements were not made at each well. A total of 

38 wells were utilized to construct the average waterlevel map. Of these wells, eight water-level measurements were collected from 29 wells; seven water-level 

measurements were collected from 8 wells; and six

water-level measurements were collected from 1 well. 

An analysis of average water-level data for wells with 

eight intermittent measurements indicates less than a 

1 percent difference between using eight measurements 

to compute an average water level and using six or seven 

measurements to compute an average water level. Therefore, calculated average water-level data for wells with 

only six or seven water-level measurements were acceptable for inclusion in the water-level map (appendix).
Ground-Water Levels 9

Precipitation

Within the Breezy Hill area, precipitation is the 

major source of water to recharge the aquifer. Precipitation data used in this study were acquired from the 

National Oceanic and Atmospheric Administration 

(NOAA) climatological station Aiken 4 NE, located 

about 10 mi east of the study area, and are regarded as 

representative of the precipitation within the Breezy 

Hill area (fig. 1). For station Aiken 4 NE, the normal 

yearly precipitation is about 51 in. (NOAA, 1999) 

(fig. 4).

From April 1999 to November 2000, the recorded 

monthly precipitation was less than the long-term normal

monthly precipitation for all months except June, July, 

and September 1999, and January, August, September, 

and November 2000 (NOAA, 2000a-k). From April 

1999 to November 2000, the calculated long-term normal precipitation for the period is about 84 in.; however, 

the recorded precipitation at the station was about 69.2 in.

The difference of 14.8 in. between the calculated longterm normal precipitation and the recorded precipitation 

represents about a 17.6 percent decrease in normal precipitation for the period.

Evapotranspiration

Evapotranspiration (ET) varies seasonally and 

is an important component of the hydrologic cycle, 

second only to precipitation. During times of reduced 

precipitation, ET continues to deplete water supplies 

in surface-water bodies, streams, and sediment, and 

varies according to weather and wind conditions 

(Hanson, 1991). ET was not measured during this 

study. The mean ET for South Carolina ranges from 

30 to 35 in/yr (Hanson, 1991). For a shallow unconfined aquifer, such as the Floridan-Midville aquifer, 

the estimated water loss of 30 to 35 in/yr to ET 

becomes increasingly significant during periods of 

reduced precipitation.

Surface-Water Flow

The USGS maintained a surface-water gaging 

station on Little Horse Creek near Graniteville 

(02196689) from October 1989 to March 2001 (fig. 5). 

The gage monitored a drainage area of 26.6 mi2. During the study period, streamflow data were not collected from the gage from December 1999 to March 

2000 (fig. 5). The gage was reactivated in March 2000 

and continued operation until March 2001. For wateryears 1990-2000, average annual flow for the station 

was 33.8 ft3/s, and annual runoff was 1.27 ft3/s. The 

lowest annual 7-day minimum flow of 8.5 ft3/s was 

recorded on July 16, 2000. The lowest daily mean discharge during the 2000 water year occurred on July 18, 

2000, and was 7.0 ft3/s (Cooney and others, 2000).

From April 1999 to November 2000, excluding 

December 1999 to March 2000, monthly average flow 

recorded for Little Horse Creek exceeded the long-term 

monthly average flow during the months of June and 

July 1999. During the remainder of the study period, 

recorded monthly flows were less than the long-term 

monthly average for the period (fig. 6).

Ground-Water Withdrawals

Residents and industry within the Breezy Hill 

study area operate domestic, irrigation, and industrial 

production wells that collectively withdraw an

unknown volume of ground water. Breezy Hill Water 

and Sewer Company (BHW&S) is the largest producer 

of potable ground water within the study area and ranks 

54 out of the 100 largest public-water suppliers in 

South Carolina. The utility serves water to local industries and a population of approximately 10,000 with an 

estimated per capita use of 104 gal/d. The utility distributes an average 2.1 Mgal/d of water (Newcome, 

2000). When required, BHW&S purchases approximately 300,000 gal/d from the City of North Augusta. 

During periods of peak usage, BHW&S purchases an 

additional 200,00 gal/d of water from Edgefield County 

Water Sewer and 450,000 gal/d from the City of North 

Augusta (C. Hilton, Breezy Hill Water and Sewer 

Company, written commun., 2001).

Water-use data were obtained from the SCDHEC 

water-use files and from conversations with the local 

water-utility manager (C. Hilton, Breezy Hill Water 

and Sewer Company., oral commun., 2001). Over time, 

the local water utility has installed production wells to 

meet the demands for water within the area (table 1). 

During the study, the utility operated 13 production 

wells. Water-use data show that from 1989 to 2000 

annual ground-water withdrawals increased from 315.2 

to 500.0 Mgal, which represents a 37 percent increase 

in ground-water withdrawals for the utility (fig. 7). 

From January 1999 to December 2000, the utility 

exceeded the long-term monthly average groundwater withdrawals for all months except September 

and December 2000. Calculated long-term monthly 
10 Ground-Water Levels in the Floridan-Midville Aquifer in the Breezy Hill Area, Aiken and Edgefield Counties, South Carolina, 

April 1999–November 2000

Long-term normal monthly precipitation

Recorded monthly precipitation

Departure from long-term normal precipitation

-4

-2

0

2

4

6

8

10

PRECIPITATION, IN INCHES

A M J J A S O N D J F M A M J J A S O N

1999 2000

TIME, IN MONTHS

Figure 4. Long-term normal monthly precipitation, recorded monthly precipitation, and departure from long-term normal monthly 

precipitation, Aiken County, South Carolina, April 1999–November 2000. (Data from the National Oceanic and Atmospheric 

Administration climatological station, Aiken 4 NE.)

1999

Monthly precipitation

2000

Monthly precipitation

Long-term

normal Recorded

Departure from 

long-term

normal

Long-term

normal Recorded

Departure from 

long-term

normal

April 3.82 2.64 -1.18 January 4.64 8.72 4.08

May 4.17 2.16 -2.01 February 4.47 1.31 -3.16

June 5.13 7.60 2.47 March 5.28 3.51 -1.77

July 5.16 5.38 0.22 April 3.82 2.01 -1.81

August 5.31 3.47 -1.84 May 4.17 0.35 -3.82

September 3.52 5.08 1.56 June 5.13 2.14 -2.99

October 2.84 1.43 -1.41 July 5.16 2.36 -2.80

November 2.88 1.18 -1.70 August 5.31 5.95 0.64

December 3.79 1.46 -2.33 September 3.52 7.98 4.46

October 2.84 0.01 -2.83

November 2.88 4.43 1.55
Ground-Water Levels 11

0

10

20

30

40

50

60

70

80

TIME, IN MONTHS

Note: No streamflow

data collected from 

December 1999 to 

March 2000

FLOW, IN CUBIC FEET PER SECOND

OJ J A OJ J A OJ J A OJ J A OJ J A OJ J A OJ J A OJ J A OJ J A OJ J A OJ J A O

1989 90 91 92 93 94 95 96 97 98 99 2000

Figure 5. Monthly average flow at Little Horse Creek near Graniteville, South Carolina, October 1989–November 2000. 

(Data from U.S. Geological Survey gaging station 02196689.)

Year Jan. Feb. March April May June July Aug. Sept. Oct. Nov. Dec.

1989 26.0 31.4 37.0

1990 37.4 31.4 30.9 24.1 28.5 18.7 19.6 20.1 11.8 41.9 29.3 31.0

1991 40.3 33.2 43.7 37.1 40.3 47.8 41.2 41.4 25.6 23.2 28.4 30.4

1992 37.4 32.3 40.4 33.4 20.0 29.4 25.0 30.8 27.5 36.4 51.7 49.0

1993 71.7 55.2 59.6 53.3 39.0 28.5 17.9 16.2 22.6 23.8 29.1 36.4

1994 47.7 54.5 59.1 32.5 20.5 36.6 27.4 27.2 21.8 38.5 38.3 43.4

1995 53.1 67.8 48.8 33.5 24.6 35.9 26.9 33.7 35.6 34.0 38.9 37.8

1996 39.9 36.5 48.9 34.8 29.4 24.9 21.4 24.0 23.9 26.0 26.7 26.1

1997 33.4 32.5 32.2 28.6 23.3 26.5 30.0 16.0 20.0 25.8 29.4 34.6

1998 47.5 54.5 62.6 66.6 48.6 35.0 23.9 20.7 34.8 24.8 27.8 29.0

1999 40.4 39.6 31.7 32.8 22.0 33.7 35.0 13.7 15.7 22.3 25.8 no data

2000 no data no data 27.7 27.4 17.7 14.7 13.5 18.9 22.0 13.5 20.4
12 Ground-Water Levels in the Floridan-Midville Aquifer in the Breezy Hill Area, Aiken and Edgefield Counties, South Carolina, 

April 1999–November 2000

-20

-10

0

10

20

30

40

50

A M J J A S O N D J F M A M J J A S O N

Note: No streamflow data 

collected from 

December 1999 to 

March 2000

TIME, IN MONTHS

1999 2000

FLOW, IN CUBIC FEET PER SECOND

Long-term monthly average flow

Recorded monthly flow

Departure from long-term

 monthly average flow

Figure 6. Long-term monthly average flow, recorded monthly flow, and departure from long-term monthly average flow at Little 

Horse Creek near Graniteville, South Carolina, April 1999–November 2000. (Data from U.S. Geological Survey gaging station 

02196689.)

1999

Monthly flow

2000

Monthly flow

Long-term

average

Recorded

Departure from 

long-term

average

Long-term

average

Recorded

Departure from 

long-term

average

April 37.7 32.8 -4.9 January 44.9 no data no data

May 29.6 22.0 -7.6 February 43.7 no data no data

June 31.7 33.7 2.0 March 45.8 27.7 -18.1

July 26.9 35.0 8.2 April 37.7 27.4 -10.3

August 24.4 13.7 -10.7 May 29.6 17.7 -11.9

September 23.9 15.7 -8.2 June 31.7 14.7 -17.0

October 30.0 22.3 -7.7 July 26.9 13.5 -13.4

November 33.0 25.8 -7.3 August 24.4 18.9 -5.5

December 35.5 no data no data September 23.9 22.0 -1.9

October 30.0 13.5 -16.5

November 33.1 20.4 -12.7
Ground-Water Levels 13

ground-water withdrawals by the utility for a 20-month 

period from April 1999 to November 2000 totaled 674 

Mgal; however, actual ground-water withdrawals by 

the utility totaled 883 Mgal (fig. 8). During the study 

period, the difference of 209 Mgal between the calculated long-term and actual monthly ground-water withdrawals represented a 31 percent increase in groundwater withdrawals for the production wells.

Floridan-Midville Aquifer

Average water-level elevations for the unconfined Floridan-Midville aquifer from April 1999 to 

November 2000 were mapped. The configuration of 

the water-level surface is a subdued version of the local 

topography (plate 4). Water-level contours indicate 

lower hydraulic gradients beneath the broad crest of 

the interfluves and higher hydraulic gradients beneath 

the flanks of the interfluves in the creek and stream 

valleys. The highest water-level elevations were 

observed near the Aiken-Edgefield County boundary 

in the northern part of the study area (plate 4). During 

the study, the average water-level elevation for the 

Floridan-Midville aquifer ranged from about 200 ft 

near Langley Pond in the southern regions of the study 

area to more than 480 ft in the northern region near the 

Aiken-Edgefield County boundary (plate 4).

The direction of ground-water flow is from north 

to south between Horse and Little Horse Creeks and 

northwest to southeast between Little Horse and Hightower Creeks, Hightower Creek and Franklin Branch, 

and Franklin Branch and Mims Branch (plate 4). Ground 

Table 1. Selected well data for production and observation wells owned by the Breezy Hill Water and Sewer Company, 

Aiken County, South Carolina

[USGS ID, U.S. Geological Survey well identifier. Latitude and longitude are expressed in degrees (°) and minutes ('); specific coordinates are 

available upon request]

USGS 

ID Latitude Longitude

Elevation of 

land surface

(feet, above 

sea level)

Well depth

(feet, below 

land surface)

Elevation of 

top of 

open zone

(feet, above 

sea level)

Elevation of 

bottom of 

open zone 

(feet, above/

below 

sea level)

Aquifer system 

designation

Production 

capacity 

(gallons

per minute)

AK-432 33°35' 81°50' 482 235 287 257 Floridan-Midville 1176 

AK-436 33°34' 81°50' 470 250 260 240 Floridan-Midville 252 

AK-455 33°31' 81°55' 458 285 223 193 Floridan-Midville 230 

AK-457 33°34' 81°50' 480 237 276 246 Floridan-Midville 224 

AK-472 33°30' 81°54' 274 136 164 144 Floridan-Midville 98 

AK-473 33°34' 81°50' 441 192 277 257 Floridan-Midville 174

AK-747 33°31' 81°52' 353 240 193 113 Floridan-Midville no data

AK-750 33°34' 81°50' 470 300 270 170 Floridan-Midville no data

AK-777 33°33' 81°49' 247 70 207 202 Floridan-Midville 100 

no data no data no data no data 192 182 no data no data

AK-778/AK-900 33°31' 81°52' 355 240 195 115 Floridan-Midville 400 

AK-781 33°34' 81°50' 470 300 270 170 Floridan-Midville 403 

AK-843 33°31' 81°52' 353 220 193 133 Floridan-Midville 170 

AK-844 33°30' 81°55' 430 1,010 210 110 Floridan-Midville 

and crystalline 

bedrock

168 

no data no data no data no data 65 -580 no data no data

AK-2439 33°37' 81°50' 470 120 390 350 Floridan-Midville 206 

AK-2440 33°37' 81°51' 490 130 390 360 Floridan-Midville 175 

AK-2542 33°37' 81°50' 470 112 380 360 Floridan-Midville no data

AK-2543 33°31' 81°52' 357 240 197 117 Floridan-Midville no data

AK-2544 33°37' 81°51' 490 142 390 360 Floridan-Midville no data

1 Data from C. Hilton, Breezy Hill Water and Sewer Company, oral commun., February 2001.
14 Ground-Water Levels in the Floridan-Midville Aquifer in the Breezy Hill Area, Aiken and Edgefield Counties, South Carolina, 

April 1999–November 2000

TIME, IN MONTHS

J J A OJ J A OJ J A OJ J A OJ J A OJ J A OJ J A OJ J A OJ J A OJ J A OJ J A O

90

J J A O

1989 91 92 93 94 95 96 97 98 99 2000

0

10

20

30

40

50

60

70

80

GROUND-WATER WITHDRAWALS, IN MILLION GALLONS

Figure 7. Monthly total ground-water withdrawals for the Breezy Hill Water and Sewer Company, Aiken County, South Carolina, 

1989–2000.

Year Jan. Feb. March April May June July Aug. Sept. Oct. Nov. Dec.

1989 19.58 20.94 24.89 32.72 30.00 27.35 25.71 25.45 25.92 23.49 27.61 31.49

1990 27.13 23.45 26.48 28.68 34.23 38.05 32.83 31.32 32.56 27.44 27.70 27.53

1991 27.01 24.11 28.61 25.79 28.45 31.03 29.99 26.51 29.00 33.66 28.81 28.12

1992 27.71 26.13 29.74 28.26 35.37 32.52 34.89 33.60 29.51 30.00 27.92 28.59

1993 27.58 25.37 29.51 27.80 38.93 45.31 49.54 45.21 36.06 37.72 32.87 32.77

1994 27.15 23.80 27.24 38.03 49.00 43.08 32.83 32.96 30.79 28.88 27.56 25.96

1995 28.61 28.37 33.21 39.90 50.47 37.97 40.86 37.17 37.17 35.48 33.12 33.07

1996 32.01 30.29 32.14 35.97 42.94 41.19 36.87 36.97 37.67 35.60 31.74 29.34

1997 29.71 26.24 32.87 33.96 42.87 39.21 46.51 46.97 45.14 41.48 28.51 22.85

1999 33.63 28.57 29.21 39.96 49.65 53.89 50.80 64.15 50.12 37.53 34.79 30.65

2000 34.44 29.97 35.80 40.93 73.50 65.40 54.68 38.63 33.06 35.26 29.95 28.47
Ground-Water Levels 15

-10

0

10

20

30

40

50

60

70

80

GROUND-WATER WITHDRAWALS, IN MILLION GALLONS

Long-term monthly average ground-water withdrawals

Monthly total ground-water withdrawals

Departure from long-term monthly average ground-water withdrawals

J F M A M J J A S O D

1999 2000

TIME, IN MONTHS

JN N F M A M J J A S O D

1999

Monthly ground-water withdrawals

2000

Monthly ground-water withdrawals

Long-term 

average 

Total

Departure from 

long-term 

average 

Long-term 

average 

Total

Departure from 

long-term 

average

January 26.78 33.63 6.85 January 26.78 34.44 7.66

February 24.74 28.57 3.82 February 24.74 29.97 5.23

March 28.70 29.21 0.51 March 28.70 35.80 7.10

April 31.50 39.96 8.47 April 31.50 40.93 9.43

May 39.19 49.65 10.47 May 39.19 73.50 34.31

June 38.49 53.89 15.40 June 38.49 65.40 26.91

July 38.74 50.80 12.06 July 38.74 54.68 15.94

August 36.68 64.15 27.46 August 36.68 38.63 1.95

September 34.56 50.12 15.57 September 34.56 33.06 -1.50

October 33.29 37.53 4.24 October 33.29 35.26 1.97

November 29.75 34.79 5.04 November 29.75 29.95 0.20

December 29.23 30.65 1.41 December 29.23 28.47 -0.76

Figure 8. Long-term monthly average ground-water withdrawals, monthly total ground-water withdrawals, and departure 

from long-term monthly average ground-water withdrawals for the Breezy Hill Water and Sewer Company, Aiken County, 

South Carolina, 1999–2000.
16 Ground-Water Levels in the Floridan-Midville Aquifer in the Breezy Hill Area, Aiken and Edgefield Counties, South Carolina, 

April 1999–November 2000

water discharges along the flanks of the interfluves into 

the bounding streams where the elevations of the 

ground water and streams coincide (plate 4).

From November 1999 to November 2000 

ground-water levels near pumping centers declined. 

Water levels in wells AK-747, AK-750, AK-777, 

AK-2542, AK-2543, and AK-2544 declined 4.55, 

4.99, 1.59, 2.18, 3.9 and 1.99 ft, respectively (see 

appendix). Few historic ground-water levels are available for the Breezy Hill area. Water levels for wells 

AK-747 and AK-750 measured May 1992 (Harrelson 

and others, 1997) were compared to April 2000 water 

levels, which illustrate a water-level decline of 10.27 

and 11.50 ft, respectively.

Average saturated thickness of the FloridanMidville aquifer is highly variable in the Breezy Hill 

area, ranging from about 0 to 20 ft along the upper 

and middle flanks of the interfluve bounded by Horse 

Creek to about 70 ft near Langley Pond. Average saturated thickness ranged from about 0 to 20 ft along 

Little Horse Creek and many of the smaller, ephemeral 

creeks, to about 20 to 70 ft across the interfluvial areas 

(plate 5).

The USGS computer program PART (Rutledge, 

1998) was used to generate a base-flow recession 

analysis and to estimate an average annual recharge 

rate utilizing streamflow data for Little Horse Creek. 

From 1990 to 1997, the PART program produced an 

estimated mean base flow of 14.9 in/yr for the creek. 

Krambis (2000) conducted a base-flow recession analysis on streamflow data for Little Horse Creek from 

October 1, 1989, to August 5, 1996, that estimated an 

average annual recharge rate of 14.4 in/yr. Based on 

historical streamflow data and losses to evapotranspiration, Cherry and Badr (1998) and Gebert and 

others (1987) estimated that annual average recharge 

rates ranged from 13-15 in/yr for the area. 

Using an estimated average porosity ranging 

from 30 to 35 percent, based on observations of the 

sand-aquifer cores, an average annual recharge of 13 to 

15 in. would cause a 3.6- to 4.1- ft water-level change 

to the saturated thickness of the Floridan-Midville 

aquifer if applied instantaneously. Water-level declines 

observed in wells from April 1999 to November 2000 

approximated an average decline of 4 ft.

SUMMARY

The Breezy Hill area in Aiken and Edgefield 

Counties of west-central South Carolina is a rapidly 

growing region in need of increasing amounts of ground 

water. From 1995 to 1998, the local water utility 

increased ground-water withdrawals in the Breezy Hill 

area from 1.4 to 2.1 million gallons per day to meet 

water-supply demands. As development continues, 

future demands for ground water will likely put stress 

on the surface- and ground-water resources of the area. 

To address this issue, the U.S. Geological Survey, in 

cooperation with Aiken County, compiled and interpreted geologic and hydrologic data needed to map the 

ground-water system in the Breezy Hill study area.

The Breezy Hill study area consists of four 

interfluvial areas comprising the regions between Horse 

and Little Horse Creeks, Little Horse and Hightower 

Creeks, Hightower Creek and Franklin Branch, and 

Franklin Branch and Mims Branch. Across the interfluvial areas, the average elevation of the water-level 

surface ranged from 200 to 480 feet above sea level, and 

the average saturated thickness of the Floridan-Midville 

aquifer ranged from less than 20 to 70 feet thick. The 

configuration of the water-level surface for the FloridanMidville aquifer indicates that recharge to the aquifer 

occurs mainly within the interfluves. Recharge is 

derived principally from precipitation, although some 

potential exists for ground-water recharge from underlying crystalline rocks. Ground water discharges along the 

flanks of the interfluves into the bounding streams where 

the elevations of the ground water and streams coincide.

Precipitation data obtained from the National 

Oceanic and Atmospheric Administration climatological station, Aiken 4 NE, show that normal annual precipitation is about 51 inches. For a 20-month period 

from April 1999 to November 2000, calculated longterm normal precipitation totaled about 84.0 inches; 

however, actual recorded precipitation totaled 69.2 

inches, representing about a 17.6 percent decrease in 

precipitation during this period. Published estimates of 

annual evapotranspiration range from 30 to 35 inches.

A U.S. Geological Survey surface-water gaging 

station located near the center of the study area on 

Little Horse Creek monitors runoff from a drainage 

area of 26.6 square miles. Average annual flow for the 

station for water years 1990-2000 was 33.8 cubic feet 

per second. From April 1999 to November 2000, the 

monthly average flow was less than the average monthly 
Selected References 17

flow for the long-term record, excluding December 

1999 to March 2000 when no data were collected. 

Monthly average flow for Little Horse Creek exceeded 

the normal monthly flow during June and July 1999. 

The lowest annual 7-day minimum flow of 8.5 cubic 

feet per second was recorded on July 16, 2000. The 

lowest daily mean discharge during the 2000 water 

year occurred on July 18, 2000, and was 7.0 cubic 

feet per second.

Ground water in the Breezy Hill area is principally withdrawn from the unconfined Floridan-Midville aquifer. Residents and industry within the Breezy 

Hill area operate domestic, irrigation, and production 

wells that collectively withdraw an unknown volume 

of ground water. The local water utility has installed 

production wells over time to meet increasing demands 

for water. During the study period, the utility operated 

13 production wells. Water-use data were obtained 

from the South Carolina Department of Health and 

Environmental Control and from conversations with 

the local water utility manager. Ground-water withdrawals by the local water utility increased 37 percent 

from 1989 to 2000 (315.2 to 500 million gallons, 

respectively). From January 1999 to December 2000, 

the utility exceeded the long-term monthly average 

ground-water withdrawals for every month except 

September and December 2000. Calculated long-term 

monthly ground-water withdrawals by the utility for a 

20-month period from April 1999 to November 2000 

totaled 674 million gallons; however, actual groundwater withdrawals totaled 883 million gallons, which 

is 31 percent more than the long-term average groundwater withdrawals for the production wells.

Published estimates of average annual groundwater recharge rates for the study area range from 13 to 

15 inches per year. The U.S. Geological Survey computer program PART was used to conduct a base-flow 

recession analysis and to estimate an average annual 

recharge rate utilizing streamflow data for Little Horse 

Creek. The analysis provided an estimated recharge 

rate of 14.9 inches per year for the Little Horse Creek 

drainage area. 

Using an estimated average porosity ranging 

from 30 to 35 percent observed in the sand-aquifer 

cores, an average annual recharge of 13 to 15 inches 

would cause a 3.6- to 4.1-foot water-level change to 

the saturated thickness of the aquifer, if applied instantaneously. The water-level declines observed in wells 

from April 1999 to November 2000 approximated an 

average decline of 4 feet.

From November 1999 to November 2000, 

ground-water levels in six wells near utility pumping 

centers declined 2 to 5 feet. Long-term water-level 

declines of 10.27 and 11.50 feet were measured in two 

wells between May 1992 and April 2000, respectively.

Normal evapotranspiration and reduced precipitation limited the amount of water available to recharge 

the aquifer, and as a result, the Floridan-Midville aquifer retained very little, if any, of the estimated annual 

recharge. Water-level declines observed in many wells 

and the decrease in streamflow in Little Horse Creek, 

indicate that ground-water levels and storage are 

responding to reduced precipitation, normal evapotranspiration, and increased ground-water withdrawals. 

During the study period, ground-water levels within the 

study area reflected the results of natural and human 

stresses superimposed on the hydrologic system.

SELECTED REFERENCES

Aadland, R.K., Gellici, J.A., and Thayer, P.A., 1995, 

Hydrogeologic framework of west-central South 

Carolina: South Carolina Department of Natural 

Resources, Water Resources Division Report 5, 200 p.

Aucott, R.A., Davis, M.E., and Speiran, G.K., 1987, Geohydrologic framework for the Coastal Plain aquifers 

of South Carolina: U.S. Geological Survey WaterResources Investigations Report 85-4271, 7 sheets.

Bishop, J.W., 1982, Lithostratigraphy and depositional 

history of the Late Cretaceous to Oligocene sediments 

of Coastal Plain of western South Carolina: Master of 

Science thesis, University of South Carolina, Columbia, 

115 p.

Bramlett, K.W., 1980, Geology of the Johnston-Edgefield 

area, South Carolina, and its regional implications: 

Master of Science thesis, University of South Carolina, 

Columbia, 56 p.

Buie, B.F., 1978, The Huber Formation of eastern-central 

Georgia, in Short contributions to the geology of Georgia: Georgia Geologic Survey Bulletin 93, p. 1-7.

Campbell, B.G., 1982, Geology and development constraints 

of the North Augusta, South Carolina, riverfront: Master 

of Science thesis, University of Missouri-Kansas City, 

77 p.

Cherry, R.N., and Badr, A.W., 1998, South Carolina water 

plan: South Carolina Department of Natural Resources; 

Land, Water, and Conservation Division Report, 62 p.

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18 Ground-Water Levels in the Floridan-Midville Aquifer in the Breezy Hill Area, Aiken and Edgefield Counties, South Carolina, 

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well data in the vicinity of the Savannah River Site, 

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Open-File Report 96-657A, 215 p., 10 plates.

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South Carolina Geological Survey, Carolina Geological 

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150 p.

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McVay, T.N., Bay, H.X., and Munyan, A.C., eds., Clay 

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U.S. Geological Survey Bulletin 901, p. 23-82.
Selected References 19

Metzgar, C.R., 1977, The petrology and structure of the 

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51 p.

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Climatological data annual summary South Carolina: 

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no. 13, 21 p.

------ 2000a, Climatological data South Carolina January 

2000: Asheville, N.C., National Climatic Data Center, v. 

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2000: Asheville, N.C., National Climatic Data Center, v. 

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2000: Asheville, N.C., National Climatic Data Center, v. 

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no. 04, 31 p.

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Asheville, N.C., National Climatic Data Center, v. 103, 

no. 05, 31 p.

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no. 06, 29 p.

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Asheville, N.C., National Climatic Data Center, v. 103, 

no. 07, 35 p.

------ 2000h, Climatological data South Carolina August 

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v. 103, no. 08, 31 p.

------ 2000i, Climatological data South Carolina September 

2000: Asheville, N.C., National Climatic Data Center, 

v. 103, no. 09, 29 p.

------ 2000j, Climatological data South Carolina October 

2000: Asheville, N.C., National Climatic Data Center, 

v. 103, no. 10, 29 p.

------ 2000k, Climatological data South Carolina November 

2000: Asheville, N.C., National Climatic Data Center, 

103, no. 11, 29 p.

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------ 2000, The 100 largest public water supplies in South 

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rocks of South Carolina: U.S. Geological Survey Bulletin 1183, 126 p.

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Sloan, Earle, 1904, A preliminary report on the clays of 

South Carolina: South Carolina Geological Survey 

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------ 1907, A summary of the mineral resources of South 

Carolina: South Carolina Department of Agriculture, 

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Carolina: South Carolina Geological Survey Bulletin 2, 

505 p.

Smith, K.M., 1949, Investigation of the Aiken kaolin district, 

Aiken County, South Carolina: U.S. Bureau of Mines 

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U.S. Geological Survey 7.5-minute series topographic 

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------ photorevised 1980, Graniteville, S.C., quadrangle: 

U.S. Geological Survey 7.5-minute series topographic 

map, scale 1:24,000.

------ photorevised 1980, North Augusta, S.C.-Ga., quadrangle: 

U.S. Geological Survey 7.5-minute series topographic 

map, scale 1:24,000.

------ photorevised 1981, Augusta East, Ga.-S.C., quadrangle: 

U.S. Geological Survey 7.5-minute series topographic 

map, scale 1:24,000.

------ photorevised 1982, Ropers Crossroads, S.C., quadrangle: 

U.S. Geological Survey 7.5-minute series topographic 

map, scale 1:24,000.
20 Ground-Water Levels in the Floridan-Midville Aquifer in the Breezy Hill Area, Aiken and Edgefield Counties, South Carolina, 

April 1999–November 2000

------ photorevised 1989, Hollow Creek, S.C., quadrangle: 

U.S. Geological Survey 7.5-minute series topographic 

map, scale 1:24,000.

Willoughby, R.H., 1983, Geologic map of the Graniteville 

quadrangle: South Carolina Geological Survey OpenFile Report 31, scale 1:24,000.

------ 1984, Geologic map of the Aiken NW quadrangle: 

South Carolina Geological Survey Open-File Report 39, 

scale 1:24,000.

------ 1985a, Geologic map of the Trenton quadrangle: South 

Carolina Geological Survey Open-File Report 43, scale 

1:24,000.

------ 1985b, Geologic map of the Coastal Plain in Johnson 

and Edgefield quadrangles: South Carolina Geological 

Survey Open-File Report 46, scale 1:24,000.

------ 1986, Geologic map of the Coastal Plain in North 

Augusta and Ropers Crossroads quadrangles: South 

Carolina Geological Survey Open-File Report 54, scale 

1:24,000.
Appendix 21

Appendix
22 Ground-Water Levels in the Floridan-Midville Aquifer in the Breezy Hill Area, Aiken and Edgefield Counties, South Carolina, 

April 1999–November 2000 Appendix. Water--level elevations for wells in the Breezy Hill area, Aiken and Edgefield Counties, South Carolina, April 1999-November 2000 [Shaded values indicate that data were used to construct the average water-level map. USGS ID, U.S. Geological Survey well identifier. Latitude and longitude are expressed in degrees (°) and minutes ('); specific coordinates are available upon request. --, no data] USGS ID Latitude Longitude Elevation of land surface (feet, above sea level) Well depth (feet, below land surface) Elevation of top of open zone (feet, above sea level) Elevation of bottom of open zone (feet, above/below sea level) Aquifer system designation for water-level measurement Date of water-level measurement Elevation of water level (feet, above sea level) Average elevation of water level (feet, above sea level)

Aiken County

AK-747 33°31' 81°52' 353 240 192 112 Floridan-Midville 09/22/99 195.72 --

-- -- -- -- -- -- -- 11/18/99 195.01 ---- -- -- -- -- -- -- 02/24/00 194.47 ---- -- -- -- -- -- -- 04/19/00 193.25 ---- -- -- -- -- -- -- 07/21/00 189.35 ---- -- -- -- -- -- -- 08/21/00 191.01 ---- -- -- -- -- -- -- 10/17/00 190.58 ---- -- -- -- -- -- -- 11/16/00 190.46 ---- -- -- -- -- -- -- -- -- 192.48

AK-750 33°34' 81°50 470 300 270 170 Floridan-Midville 06/07/99 289.28 --

-- -- -- -- -- -- -- 09/24/99 288.30 ---- -- -- -- -- -- -- 11/18/99 287.83 ---- -- -- -- -- -- -- 02/28/00 286.85 ---- -- -- -- -- -- -- 04/02/00 285.73 ---- -- -- -- -- -- -- 07/20/00 283.33 ---- -- -- -- -- -- -- 08/21/00 283.02 ---- -- -- -- -- -- -- 10/13/00 283.03 ---- -- -- -- -- -- -- 11/16/00 282.84 ---- -- -- -- -- -- -- -- -- 285.58

AK-777 33°33' 81°49' 247 70 208 203 Floridan-Midville 04/01/99 227.46 --

-- -- -- -- -- -- -- 11/18/99 225.63 ---- -- -- -- -- -- -- 02/23/00 226.00 ---- -- -- -- -- -- -- 04/19/00 225.50 ---- -- -- -- -- -- -- 07/19/00 224.17 ---- -- -- -- -- -- -- 08/21/00 223.68 ---- -- -- -- -- -- -- 10/16/00 224.10 ---- -- -- -- -- -- -- 11/16/00 224.04 ---- -- -- -- -- -- -- -- -- 225.07

AK-2449 33°32' 81°51' 491 340 202 182 Floridan-Midville 08/18/99 236.53 --

-- -- -- -- -- -- -- 11/10/99 237.24 ---- -- -- -- -- -- -- 02/23/00 235.62 ---- -- -- -- -- -- -- 04/19/00 235.03 ---- -- -- -- -- -- -- 07/20/00 233.70 ---- -- -- -- -- -- -- 08/21/00 233.30 --
Appendix 23

-- -- -- -- -- -- -- 10/17/00 232.79 ---- -- -- -- -- -- -- 11/16/00 232.48 ---- -- -- -- -- -- -- -- -- 234.59

AK-2470 33°33' 81°49' 366 170 216 196 Floridan-Midville 06/16/99 258.49 --

-- -- -- -- -- -- -- 11/16/99 256.90 ---- -- -- -- -- -- -- 02/29/00 255.90 ---- -- -- -- -- -- -- 04/20/00 255.25 ---- -- -- -- -- -- -- 07/20/00 254.33 ---- -- -- -- -- -- -- 08/31/00 253.80 ---- -- -- -- -- -- -- 10/13/00 253.87 ---- -- -- -- -- -- -- 11/13/00 254.74 ---- -- -- -- -- -- -- -- -- 255.41

AK-2471 33°33' 81°49' 387 -- -- -- Undetermined 06/10/99 264.19 --

-- -- -- -- -- -- -- 11/16/99 262.36 ---- -- -- -- -- -- -- 02/29/00 261.53 ---- -- -- -- -- -- -- 04/20/00 260.79 ---- -- -- -- -- -- -- 07/20/00 259.87 ---- -- -- -- -- -- -- 08/31/00 259.30 ---- -- -- -- -- -- -- 10/13/00 259.31 ---- -- -- -- -- -- -- 11/13/00 259.10 ---- -- -- -- -- -- -- -- -- 260.81

AK-2473 33°33' 81°49' 280 106 194 174 Floridan-Midville 07/29/99 235.87 --

-- -- -- -- -- -- -- 11/15/99 235.21 ---- -- -- -- -- -- -- 02/23/00 235.02 ---- -- -- -- -- -- -- 04/19/00 234.71 ---- -- -- -- -- -- -- 07/18/00 233.75 ---- -- -- -- -- -- -- 08/31/00 233.13 ---- -- -- -- -- -- -- 10/16/00 232.85 ---- -- -- -- -- -- -- 11/13/00 232.40 ---- -- -- -- -- -- -- -- -- 234.12

AK-2474 33°31' 81°50' 210 425 140 100 Floridan-Midville and 

crystalline bedrock

08/30/99 188.00 --

-- -- -- -- -- -- -- 11/15/99 186.40 ---- -- -- -- -- -- -- 02/23/00 186.27 ---- -- -- -- -- -- -- 04/20/00 185.90 ---- -- -- -- -- -- -- 07/19/00 185.15 ---- -- -- -- -- -- -- 09/28/00 184.08 ---- -- -- -- -- -- -- 10/16/00 184.74 --

Appendix. Water--level elevations for wells in the Breezy Hill area, Aiken and Edgefield Counties, South Carolina, April 1999-November 2000 (Continued) [Shaded values indicate that data were used to construct the average water-level map. USGS ID, U.S. Geological Survey well identifier. Latitude and longitude are expressed in 

degrees (°) and minutes ('); specific coordinates are available upon request. --, no data]

USGS

ID Latitude Longitude

Elevation of 

land surface 

(feet, above 

sea level)

Well depth 

(feet, below 

land 

surface)

Elevation of 

top of

open zone 

(feet, above 

sea level)

Elevation of 

bottom of 

open zone

(feet, above/below

sea level)

Aquifer system 

designation for 

water-level 

measurement

Date of 

water-level 

measurement

Elevation of 

water level 

(feet, above 

sea level)

Average 

elevation of 

water level 

(feet, above 

sea level)
24 Ground-Water Levels in the Floridan-Midville Aquifer in the Breezy Hill Area, Aiken and Edgefield Counties, South Carolina, 

April 1999–November 2000 -- -- -- -- -- -- -- 11/13/00 183.55 --

-- -- -- -- -- -- -- -- -- 185.51

AK-2475 33°31' 81°50' 260 460 200 140 Floridan-Midville and 

crystalline bedrock

08/03/99 204.03 --

-- -- -- -- -- -- -- 11/15/99 202.90 ---- -- -- -- -- -- -- 02/23/00 202.64 ---- -- -- -- -- -- -- 04/20/00 202.14 ---- -- -- -- -- -- -- 07/19/00 201.62 ---- -- -- -- -- -- -- 09/28/00 201.48 ---- -- -- -- -- -- -- 10/16/00 201.14 ---- -- -- -- -- -- -- 11/13/00 200.99 ---- -- -- -- -- -- -- -- -- 202.12

AK-2476 33°33' 81°50' 400 200 220 200 Floridan-Midville 07/30/99 256.71 --

-- -- -- -- -- -- -- 11/15/99 255.51 ---- -- -- -- -- -- -- 02/23/00 254.19 ---- -- -- -- -- -- -- 04/20/00 253.50 ---- -- -- -- -- -- -- 07/18/00 252.26 ---- -- -- -- -- -- -- 08/31/00 251.92 ---- -- -- -- -- -- -- 10/16/00 251.59 ---- -- -- -- -- -- -- 11/13/00 251.46 ---- -- -- -- -- -- -- -- -- 253.39

AK-2477 33°32' 81°50' 277 180 157 97 Floridan-Midville 02/23/00 200.99 --

-- -- -- -- -- -- -- 04/20/00 200.42 ---- -- -- -- -- -- -- 07/19/00 199.46 ---- -- -- -- -- -- -- 09/28/00 198.89 ---- -- -- -- -- -- -- 10/16/00 198.82 ---- -- -- -- -- -- -- 11/13/00 198.58 ---- -- -- -- -- -- -- -- -- 199.53

AK-2478 33°34' 81°50' 441 180 281 261 Floridan-Midville 08/10/99 304.10 --

-- -- -- -- -- -- -- 11/16/99 303.38 ---- -- -- -- -- -- -- 02/28/00 301.92 ---- -- -- -- -- -- -- 04/21/00 301.29 ---- -- -- -- -- -- -- 07/19/00 299.30 ---- -- -- -- -- -- -- 09/29/00 299.24 ---- -- -- -- -- -- -- 10/17/00 299.04 ---- -- -- -- -- -- -- 11/17/00 298.33 ---- -- -- -- -- -- -- -- -- 300.83

AK-2479 33°36' 81°50' 446 140 346 306 Floridan-Midville 08/09/99 374.01 --

Appendix. Water--level elevations for wells in the Breezy Hill area, Aiken and Edgefield Counties, South Carolina, April 1999-November 2000 (Continued) [Shaded values indicate that data were used to construct the average water-level map. USGS ID, U.S. Geological Survey well identifier. Latitude and longitude are expressed in degrees (°) and minutes ('); specific coordinates are available upon request. --, no data]

USGS

ID Latitude Longitude

Elevation of 

land surface 

(feet, above 

sea level)

Well depth 

(feet, below 

land 

surface)

Elevation of 

top of

open zone 

(feet, above 

sea level)

Elevation of 

bottom of 

open zone

(feet, above/below

sea level)

Aquifer system designation for 

water-level 

measurement

Date of 

water-level 

measurement

Elevation of 

water level 

(feet, above 

sea level)

Average 

elevation of 

water level 

(feet, above 

sea level)
Appendix 25

-- -- -- -- -- -- -- 11/09/99 372.76 ---- -- -- -- -- -- -- 02/15/00 371.61 ---- -- -- -- -- -- -- 04/17/00 371.51 ---- -- -- -- -- -- -- 07/26/00 370.59 ---- -- -- -- -- -- -- 09/28/00 370.03 ---- -- -- -- -- -- -- 10/11/00 370.16 ---- -- -- -- -- -- -- 11/17/00 369.87 ---- -- -- -- -- -- -- -- -- 371.32

AK-2480 33°35' 81°50' 458 170 308 288 Floridan-Midville 07/30/99 324.23 --

-- -- -- -- -- -- -- 11/16/99 322.32 ---- -- -- -- -- -- -- 02/28/99 317.16 ---- -- -- -- -- -- -- 04/20/00 318.20 ---- -- -- -- -- -- -- 07/20/00 318.21 ---- -- -- -- -- -- -- 09/28/00 318.21 ---- -- -- -- -- -- -- 10/13/00 317.87 ---- -- -- -- -- -- -- 11/17/00 317.56 ---- -- -- -- -- -- -- -- -- 319.22

AK-2481 33°36' 81°51' 462 131 341 331 Floridan-Midville 08/09/99 380.19 --

-- -- -- -- -- -- -- 11/09/99 379.08 ---- -- -- -- -- -- -- 02/15/00 377.42 ---- -- -- -- -- -- -- 04/17/00 377.49 ---- -- -- -- -- -- -- 07/26/00 376.63 ---- -- -- -- -- -- -- 09/12/00 376.28 ---- -- -- -- -- -- -- 10/11/00 376.06 ---- -- -- -- -- -- -- 11/17/00 375.97 ---- -- -- -- -- -- -- -- -- 377.39

AK-2482 33°32' 81°51' 408 247 181 161 Floridan-Midville 11/16/99 229.55 --

-- -- -- -- -- -- -- 02/23/00 230.61 ---- -- -- -- -- -- -- 04/19/00 226.89 ---- -- -- -- -- -- -- 07/21/00 225.91 ---- -- -- -- -- -- -- 09/01/00 225.78 ---- -- -- -- -- -- -- 10/17/00 224.72 ---- -- -- -- -- -- -- 11/16/00 224.60 ---- -- -- -- -- -- -- -- -- 226.87

AK-2483 33°34' 81°51' 308 -- -- -- Undetermined 06/14/99 276.62 --

-- -- -- -- -- -- -- 02/28/00 275.26 ---- -- -- -- -- -- -- 04/21/00 275.01 ---- -- -- -- -- -- -- 07/20/00 273.84 --

Appendix. Water--level elevations for wells in the Breezy Hill area, Aiken and Edgefield Counties, South Carolina, April 1999-November 2000 (Continued) [Shaded values indicate that data were used to construct the average water-level map. USGS ID, U.S. Geological Survey well identifier. Latitude and longitude are expressed in 

degrees (°) and minutes ('); specific coordinates are available upon request. --, no data]

USGS

ID Latitude Longitude

Elevation of 

land surface 

(feet, above 

sea level)

Well depth 

(feet, below 

land 

surface)

Elevation of 

top of

open zone 

(feet, above 

sea level)

Elevation of 

bottom of 

open zone

(feet, above/below

sea level)

Aquifer system 

designation for 

water-level 

measurement

Date of 

water-level 

measurement

Elevation of 

water level 

(feet, above 

sea level)

Average 

elevation of 

water level 

(feet, above 

sea level)
26 Ground-Water Levels in the Floridan-Midville Aquifer in the Breezy Hill Area, Aiken and Edgefield Counties, South Carolina, 

April 1999–November 2000 -- -- -- -- -- -- -- 09/28/00 273.57 --

-- -- -- -- -- -- -- 10/13/00 273.53 ---- -- -- -- -- -- -- 11/16/00 273.29 ---- -- -- -- -- -- -- -- -- 274.45

AK-2484 33°37' 81°51' 473 80 413 393 Floridan-Midville 06/08/99 421.38 --

-- -- -- -- -- -- -- 11/09/99 418.96 ---- -- -- -- -- -- -- 02/15/00 418.04 ---- -- -- -- -- -- -- 04/17/00 418.23 ---- -- -- -- -- -- -- 07/7/00 417.72 ---- -- -- -- -- -- -- 09/8/00 417.36 ---- -- -- -- -- -- -- 10/10/00 417.30 ---- -- -- -- -- -- -- 11/17/00 417.20 ---- -- -- -- -- -- -- -- -- 418.27

AK-2485 33°36' 81°51' 431 -- -- -- Undetermined 06/23/99 375.28 --

-- -- -- -- -- -- -- 11/09/99 373.95 ---- -- -- -- -- -- -- 02/15/00 373.21 ---- -- -- -- -- -- -- 04/17/00 372.91 ---- -- -- -- -- -- -- 07/26/00 372.40 ---- -- -- -- -- -- -- 09/12/00 372.16 ---- -- -- -- -- -- -- 10/11/00 372.01 ---- -- -- -- -- -- -- 11/17/00 371.93 ---- -- -- -- -- -- -- -- -- 372.98

AK-2486 33°37' 81°51' 474 100 394 374 Floridan-Midville 06/10/99 412.19 --

-- -- -- -- -- -- -- 11/09/99 410.48 ---- -- -- -- -- -- -- -- -- 411.34

AK-2487 33°31' 81°51' 418 260 198 158 Floridan-Midville 08/11/99 215.03 --

-- -- -- -- -- -- -- 11/18/99 213.45 ---- -- -- -- -- -- -- 02/24/00 212.79 ---- -- -- -- -- -- -- 04/19/00 211.99 ---- -- -- -- -- -- -- 07/26/00 211.04 ---- -- -- -- -- -- -- 09/01/00 210.84 ---- -- -- -- -- -- -- 10/17/00 210.71 ---- -- -- -- -- -- -- 11/16/00 210.54 ---- -- -- -- -- -- -- -- -- 212.05

AK-2488 33°37' 81°52' 445 61 399 384 Floridan-Midville 06/10/99 406.78 --

-- -- -- -- -- -- -- 11/09/99 405.06 ---- -- -- -- -- -- -- 02/25/00 404.41 ---- -- -- -- -- -- -- 04/17/00 404.19 --

Appendix. Water--level elevations for wells in the Breezy Hill area, Aiken and Edgefield Counties, South Carolina, April 1999-November 2000 (Continued) [Shaded values indicate that data were used to construct the average water-level map. USGS ID, U.S. Geological Survey well identifier. Latitude and longitude are expressed in degrees (°) and minutes ('); specific coordinates are available upon request. --, no data]

USGS

ID Latitude Longitude

Elevation of 

land surface 

(feet, above 

sea level)

Well depth 

(feet, below 

land 

surface)

Elevation of 

top of

open zone 

(feet, above 

sea level)

Elevation of 

bottom of 

open zone

(feet, above/below

sea level)

Aquifer system designation for 

water-level 

measurement

Date of 

water-level 

measurement

Elevation of 

water level 

(feet, above 

sea level)

Average 

elevation of 

water level 

(feet, above 

sea level)
Appendix 27

-- -- -- -- -- -- -- 07/07/00 403.70 ---- -- -- -- -- -- -- 09/08/00 403.48 ---- -- -- -- -- -- -- 10/13/00 403.59 ---- -- -- -- -- -- -- 11/17/00 403.33 ---- -- -- -- -- -- -- -- -- 404.32

AK-2489 33°31' 81°52' 387 235 172 152 Floridan-Midville 08/12/99 227.61 --

-- -- -- -- -- -- -- 02/24/00 223.85 ---- -- -- -- -- -- -- 07/21/00 214.05 ---- -- -- -- -- -- -- -- -- 221.84

AK-2491 33°37' 81°52' 450 -- -- -- Undetermined 06/10/99 382.24 --

-- -- -- -- -- -- -- 11/10/99 380.46 ---- -- -- -- -- -- -- 02/15/00 380.18 ---- -- -- -- -- -- -- 04/17/00 379.97 ---- -- -- -- -- -- -- 07/07/00 379.44 ---- -- -- -- -- -- -- 09/08/00 379.08 ---- -- -- -- -- -- -- 10/10/00 379.08 ---- -- -- -- -- -- -- 11/17/00 378.92 ---- -- -- -- -- -- -- -- -- 379.92

AK-2492 33°37' 81°52' 378 864 308 -486 Crystalline bedrock 06/14/99 371.33 --

-- -- -- -- -- -- -- 11/10/99 370.56 ---- -- -- -- -- -- -- 02/25/00 370.92 ---- -- -- -- -- -- -- 04/18/00 371.10 ---- -- -- -- -- -- -- 07/07/00 369.72 ---- -- -- -- -- -- -- 09/08/00 369.79 ---- -- -- -- -- -- -- 10/10/00 370.00 ---- -- -- -- -- -- -- 11/17/00 369.76 ---- -- -- -- -- -- -- -- -- 370.40

AK-2493 33°37' 81°52' 359 550 256 -191 Crystalline bedrock 06/14/99 350.27 --

-- -- -- -- -- -- -- 11/10/99 351.86 ---- -- -- -- -- -- -- 02/25/00 352.59 ---- -- -- -- -- -- -- 04/18/00 352.40 ---- -- -- -- -- -- -- 07/07/00 350.32 ---- -- -- -- -- -- -- 09/08/00 351.77 ---- -- -- -- -- -- -- 10/10/00 352.10 ---- -- -- -- -- -- -- 11/17/00 351.28 ---- -- -- -- -- -- -- -- -- 351.57

AK-2494 33°37' 81°52' 414 500 324 -86 Crystalline bedrock 06/14/99 369.11 --

-- -- -- -- -- -- -- 11/10/99 368.04 --

Appendix. Water--level elevations for wells in the Breezy Hill area, Aiken and Edgefield Counties, South Carolina, April 1999-November 2000 (Continued) [Shaded values indicate that data were used to construct the average water-level map. USGS ID, U.S. Geological Survey well identifier. Latitude and longitude are expressed in 

degrees (°) and minutes ('); specific coordinates are available upon request. --, no data]

USGS

ID Latitude Longitude

Elevation of 

land surface 

(feet, above 

sea level)

Well depth 

(feet, below 

land 

surface)

Elevation of 

top of

open zone 

(feet, above 

sea level)

Elevation of 

bottom of 

open zone

(feet, above/below

sea level)

Aquifer system 

designation for 

water-level 

measurement

Date of 

water-level 

measurement

Elevation of 

water level 

(feet, above 

sea level)

Average 

elevation of 

water level 

(feet, above 

sea level)
28 Ground-Water Levels in the Floridan-Midville Aquifer in the Breezy Hill Area, Aiken and Edgefield Counties, South Carolina, 

April 1999–November 2000 -- -- -- -- -- -- -- 02/25/00 368.52 --

-- -- -- -- -- -- -- 04/18/00 368.60 ---- -- -- -- -- -- -- 07/07/00 367.42 ---- -- -- -- -- -- -- 09/08/00 367.21 ---- -- -- -- -- -- -- 10/10/00 367.44 ---- -- -- -- -- -- -- 11/17/00 367.32 ---- -- -- -- -- -- -- -- -- 367.96

AK-2495 33°37' 81°52' 349 450 246 -101 Crystalline bedrock 06/14/99 337.24 --

-- -- -- -- -- -- -- 11/10/99 334.92 ---- -- -- -- -- -- -- 02/25/00 338.02 ---- -- -- -- -- -- -- 04/18/00 338.76 ---- -- -- -- -- -- -- 07/07/00 334.74 ---- -- -- -- -- -- -- 09/08/00 334.37 ---- -- -- -- -- -- -- 10/10/00 335.55 ---- -- -- -- -- -- -- 11/17/00 335.60 ---- -- -- -- -- -- -- -- -- 336.15

AK-2496 33°37' 81°52' 433 500 330 -67 Crystalline bedrock 06/14/99 378.80 --

-- -- -- -- -- -- -- 11/10/99 377.92 ---- -- -- -- -- -- -- 02/25/00 379.15 ---- -- -- -- -- -- -- 04/18/00 379.37 ---- -- -- -- -- -- -- 07/07/00 377.50 ---- -- -- -- -- -- -- 09/08/00 377.28 ---- -- -- -- -- -- -- 10/10/00 377.77 ---- -- -- -- -- -- -- 11/17/00 377.57 ---- -- -- -- -- -- -- -- -- 378.17

AK-2497 33°37' 81°52' 438 70 388 368 Floridan-Midville 06/14/99 383.71 --

-- -- -- -- -- -- -- 11/10/99 381.96 ---- -- -- -- -- -- -- 02/25/00 382.00 ---- -- -- -- -- -- -- 04/18/00 382.20 ---- -- -- -- -- -- -- 07/07/00 381.66 ---- -- -- -- -- -- -- 09/08/00 381.37 ---- -- -- -- -- -- -- 10/10/00 381.42 ---- -- -- -- -- -- -- 11/17/00 381.29 ---- -- -- -- -- -- -- -- -- 381.95

AK-2498 33°37' 81°52' 441 75 391 366 Floridan-Midville 06/14/99 384.73 --

-- -- -- -- -- -- -- 11/10/99 385.62 ---- -- -- -- -- -- -- 02/25/00 385.63 ---- -- -- -- -- -- -- 04/18/00 385.84 --

Appendix. Water--level elevations for wells in the Breezy Hill area, Aiken and Edgefield Counties, South Carolina, April 1999-November 2000 (Continued) [Shaded values indicate that data were used to construct the average water-level map. USGS ID, U.S. Geological Survey well identifier. Latitude and longitude are expressed in degrees (°) and minutes ('); specific coordinates are available upon request. --, no data]

USGS

ID Latitude Longitude

Elevation of 

land surface 

(feet, above 

sea level)

Well depth 

(feet, below 

land 

surface)

Elevation of 

top of

open zone 

(feet, above 

sea level)

Elevation of 

bottom of 

open zone

(feet, above/below

sea level)

Aquifer system designation for 

water-level 

measurement

Date of 

water-level 

measurement

Elevation of 

water level 

(feet, above 

sea level)

Average 

elevation of 

water level 

(feet, above 

sea level)
Appendix 29

-- -- -- -- -- -- -- 07/07/00 385.30 ---- -- -- -- -- -- -- 09/08/00 385.00 ---- -- -- -- -- -- -- 10/10/00 385.08 ---- -- -- -- -- -- -- 11/17/00 384.94 ---- -- -- -- -- -- -- -- -- 385.27

AK-2499 33°37' 81°52' 376 -- -- -- Undetermined 11/12/99 344.62 --

-- -- -- -- -- -- -- 02/28/00 348.82 ---- -- -- -- -- -- -- 07/07/00 341.60 ---- -- -- -- -- -- -- 09/08/00 342.50 ---- -- -- -- -- -- -- -- -- 344.39

AK-2500 33°37' 81°52' 348 240 208 108 Crystalline bedrock 04/26/99 328.06 --

-- -- -- -- -- -- -- 11/12/99 322.26 ---- -- -- -- -- -- -- -- -- 325.16

AK-2501 33°36' 81°52' 352 140 322 212 Crystalline bedrock 04/26/99 320.61 --

-- -- -- -- -- -- -- 11/12/99 318.06 ---- -- -- -- -- -- -- 02/25/00 316.83 ---- -- -- -- -- -- -- 07/07/00 312.62 ---- -- -- -- -- -- -- 09/08/00 316.02 ---- -- -- -- -- -- -- 10/13/00 315.74 ---- -- -- -- -- -- -- -- -- 316.65

AK-2502 33°36' 81°54' 433 58 385 375 Floridan-Midville 08/08/99 394.57 --

-- -- -- -- -- -- -- 11/15/99 393.46 ---- -- -- -- -- -- -- 02/25/00 392.70 ---- -- -- -- -- -- -- 04/19/00 392.53 ---- -- -- -- -- -- -- 07/27/00 391.84 ---- -- -- -- -- -- -- 09/12/00 391.74 ---- -- -- -- -- -- -- 10/11/00 391.78 ---- -- -- -- -- -- -- 11/21/00 391.80 ---- -- -- -- -- -- -- -- -- 392.55

AK-2503 33°36' 81°54' 411 32 389 379 Floridan-Midville 08/17/99 397.48 --

-- -- -- -- -- -- -- 11/12/99 397.66 ---- -- -- -- -- -- -- 02/28/00 399.11 ---- -- -- -- -- -- -- 04/18/00 398.48 ---- -- -- -- -- -- -- 07/27/00 397.30 ---- -- -- -- -- -- -- 09/12/00 397.78 ---- -- -- -- -- -- -- 10/11/00 398.39 ---- -- -- -- -- -- -- 11/21/00 397.61 ---- -- -- -- -- -- -- -- -- 397.98

Appendix. Water--level elevations for wells in the Breezy Hill area, Aiken and Edgefield Counties, South Carolina, April 1999-November 2000 (Continued) [Shaded values indicate that data were used to construct the average water-level map. USGS ID, U.S. Geological Survey well identifier. Latitude and longitude are expressed in 

degrees (°) and minutes ('); specific coordinates are available upon request. --, no data]

USGS

ID Latitude Longitude

Elevation of 

land surface 

(feet, above 

sea level)

Well depth 

(feet, below 

land 

surface)

Elevation of 

top of

open zone 

(feet, above 

sea level)

Elevation of 

bottom of 

open zone

(feet, above/below

sea level)

Aquifer system 

designation for 

water-level 

measurement

Date of 

water-level 

measurement

Elevation of 

water level 

(feet, above 

sea level)

Average 

elevation of 

water level 

(feet, above 

sea level)
30 Ground-Water Levels in the Floridan-Midville Aquifer in the Breezy Hill Area, Aiken and Edgefield Counties, South Carolina, 

April 1999–November 2000 AK-2504 33°36' 81°54' 480 80 420 400 Floridan-Midville 08/17/99 417.76 --

-- -- -- -- -- -- -- 11/12/99 417.21 ---- -- -- -- -- -- -- 02/28/00 417.92 ---- -- -- -- -- -- -- 04/18/00 418.04 ---- -- -- -- -- -- -- 07/27/00 417.29 ---- -- -- -- -- -- -- 09/12/00 417.30 ---- -- -- -- -- -- -- 10/11/00 417.50 ---- -- -- -- -- -- -- 11/21/00 417.28 ---- -- -- -- -- -- -- -- -- 417.54

AK-2505 33°36' 81°54' 481 85 421 396 Floridan-Midville 08/17/99 433.53 --

-- -- -- -- -- -- -- 11/12/99 433.05 ---- -- -- -- -- -- -- 02/28/00 432.94 ---- -- -- -- -- -- -- 04/18/00 432.91 ---- -- -- -- -- -- -- 07/27/00 432.47 ---- -- -- -- -- -- -- 09/12/00 432.33 ---- -- -- -- -- -- -- 10/11/00 432.34 ---- -- -- -- -- -- -- 11/21/00 432.18 ---- -- -- -- -- -- -- -- -- 432.72

AK-2506 33°36' 81°54' 420 30 -- -- Undetermined 08/16/99 400.85 --

-- -- -- -- -- -- -- 11/12/99 399.94 ---- -- -- -- -- -- -- 02/28/00 403.02 ---- -- -- -- -- -- -- 04/18/00 402.20 ---- -- -- -- -- -- -- 07/27/00 399.72 ---- -- -- -- -- -- -- 09/12/00 401.16 ---- -- -- -- -- -- -- 10/11/00 402.21 ---- -- -- -- -- -- -- 11/21/00 401.02 ---- -- -- -- -- -- -- -- -- 401.26

AK-2507 33°36' 81°54' 417 40 397 377 Floridan-Midville 08/17/99 403.79 --

-- -- -- -- -- -- -- 11/12/99 403.22 ---- -- -- -- -- -- -- 02/28/00 404.96 ---- -- -- -- -- -- -- 04/18/00 404.19 ---- -- -- -- -- -- -- 07/27/00 403.02 ---- -- -- -- -- -- -- 09/12/00 403.60 ---- -- -- -- -- -- -- 10/11/00 404.06 ---- -- -- -- -- -- -- 11/21/00 403.38 ---- -- -- -- -- -- -- -- -- 403.78

AK-2508 33°36' 81°54' 482 80 -- -- Undetermined 08/16/99 416.63 --

-- -- -- -- -- -- -- 11/12/99 416.34 --

Appendix. Water--level elevations for wells in the Breezy Hill area, Aiken and Edgefield Counties, South Carolina, April 1999-November 2000 (Continued) [Shaded values indicate that data were used to construct the average water-level map. USGS ID, U.S. Geological Survey well identifier. Latitude and longitude are expressed in degrees (°) and minutes ('); specific coordinates are available upon request. --, no data]

USGS

ID Latitude Longitude

Elevation of 

land surface 

(feet, above 

sea level)

Well depth 

(feet, below 

land 

surface)

Elevation of 

top of

open zone 

(feet, above 

sea level)

Elevation of 

bottom of 

open zone

(feet, above/below

sea level)

Aquifer system designation for 

water-level 

measurement

Date of 

water-level 

measurement

Elevation of 

water level 

(feet, above 

sea level)

Average 

elevation of 

water level 

(feet, above 

sea level)
Appendix 31

-- -- -- -- -- -- -- 02/28/00 416.80 ---- -- -- -- -- -- -- 04/18/00 416.99 ---- -- -- -- -- -- -- 07/27/00 416.07 ---- -- -- -- -- -- -- 09/12/00 416.14 ---- -- -- -- -- -- -- 10/11/00 416.65 ---- -- -- -- -- -- -- -- -- 416.52

AK-2509 33°36' 81°54' 467 80 -- -- Undetermined 08/16/99 416.38 --

-- -- -- -- -- -- -- 11/12/99 415.68 ---- -- -- -- -- -- -- 02/28/00 416.52 ---- -- -- -- -- -- -- 04/18/00 416.53 ---- -- -- -- -- -- -- 07/27/00 415.89 ---- -- -- -- -- -- -- 09/12/00 415.88 ---- -- -- -- -- -- -- 10/11/00 416.03 ---- -- -- -- -- -- -- 11/21/00 415.93 ---- -- -- -- -- -- -- -- -- 416.11

AK-2510 33°38' 81°51' 539 70 489 469 Floridan-Midville 07/23/99 480.89 --

-- -- -- -- -- -- -- 11/08/99 480.12 ---- -- -- -- -- -- -- 02/14/00 479.51 ---- -- -- -- -- -- -- 04/06/00 479.85 ---- -- -- -- -- -- -- 07/05/00 479.52 ---- -- -- -- -- -- -- 08/22/00 479.81 ---- -- -- -- -- -- -- 09/29/00 479.35 ---- -- -- -- -- -- -- 11/21/00 479.80 ---- -- -- -- -- -- -- -- -- 479.86

AK-2511 33°38' 81°51' 539 320 -- -- Undetermined 07/28/99 474.15 --

-- -- -- -- -- -- -- 11/08/99 474.03 ---- -- -- -- -- -- -- 02/14/00 474.17 ---- -- -- -- -- -- -- 04/06/00 473.95 ---- -- -- -- -- -- -- 07/07/00 471.95 ---- -- -- -- -- -- -- 08/22/00 472.48 ---- -- -- -- -- -- -- 09/29/00 473.95 ---- -- -- -- -- -- -- 11/21/00 474.71 ---- -- -- -- -- -- -- -- -- 473.67

AK-2512 33°38' 81°52' 513 49 479 464 Floridan-Midville 07/20/99 472.92 --

-- -- -- -- -- -- -- 11/08/99 472.45 ---- -- -- -- -- -- -- 02/14/00 472.42 ---- -- -- -- -- -- -- 04/06/00 472.81 ---- -- -- -- -- -- -- 07/05/00 472.19 --

Appendix. Water--level elevations for wells in the Breezy Hill area, Aiken and Edgefield Counties, South Carolina, April 1999-November 2000 (Continued) [Shaded values indicate that data were used to construct the average water-level map. USGS ID, U.S. Geological Survey well identifier. Latitude and longitude are expressed in 

degrees (°) and minutes ('); specific coordinates are available upon request. --, no data]

USGS

ID Latitude Longitude

Elevation of 

land surface 

(feet, above 

sea level)

Well depth 

(feet, below 

land 

surface)

Elevation of 

top of

open zone 

(feet, above 

sea level)

Elevation of 

bottom of 

open zone

(feet, above/below

sea level)

Aquifer system 

designation for 

water-level 

measurement

Date of 

water-level 

measurement

Elevation of 

water level 

(feet, above 

sea level)

Average 

elevation of 

water level 

(feet, above 

sea level)
32 Ground-Water Levels in the Floridan-Midville Aquifer in the Breezy Hill Area, Aiken and Edgefield Counties, South Carolina, 

April 1999–November 2000

-- -- -- -- -- -- -- 08/22/00 472.22 ---- -- -- -- -- -- -- 09/29/00 472.38 ---- -- -- -- -- -- -- 11/21/00 472.62 ---- -- -- -- -- -- -- -- -- 472.50

AK-2514 33°38' 81°51' 529 48 491 481 Floridan-Midville 07/21/99 489.40 --

-- -- -- -- -- -- -- 11/08/99 488.97 ---- -- -- -- -- -- -- 02/14/00 488.93 ---- -- -- -- -- -- -- 04/06/00 489.21 ---- -- -- -- -- -- -- 07/05/00 488.46 ---- -- -- -- -- -- -- 08/22/00 488.68 ---- -- -- -- -- -- -- 10/10/00 488.89 ---- -- -- -- -- -- -- 11/21/00 488.94 ---- -- -- -- -- -- -- -- -- 488.94

AK-2515 33°38' 81°51' 527 196 487 331 Floridan-Midville and 

crystalline bedrock

07/21/99 489.2 --

-- -- -- -- -- -- -- 11/08/99 489.74 ---- -- -- -- -- -- -- 02/14/00 489.21 ---- -- -- -- -- -- -- 04/06/00 486.92 ---- -- -- -- -- -- -- 07/05/00 488.35 ---- -- -- -- -- -- -- 08/22/00 487.73 ---- -- -- -- -- -- -- -- -- 488.53

AK-2516 33°38' 81°52' 518 300 298 218 Crystalline bedrock 07/21/99 472.10 --

-- -- -- -- -- -- -- 11/08/99 472.42 ---- -- -- -- -- -- -- 02/14/00 470.18 ---- -- -- -- -- -- -- 04/06/00 470.16 ---- -- -- -- -- -- -- 07/05/00 471.08 ---- -- -- -- -- -- -- 08/22/00 469.98 ---- -- -- -- -- -- -- 09/29/00 470.20 ---- -- -- -- -- -- -- 11/21/00 470.67 ---- -- -- -- -- -- -- -- -- 470.85

AK-2517 33°36' 81°50' 469 -- -- -- Undetermined 07/16/99 371.37 --

-- -- -- -- -- -- -- 11/09/99 370.05 ---- -- -- -- -- -- -- 02/15/00 369.00 ---- -- -- -- -- -- -- 04/17/00 368.73 ---- -- -- -- -- -- -- 07/26/00 368.11 ---- -- -- -- -- -- -- 08/22/00 367.97 ---- -- -- -- -- -- -- 10/11/00 367.50 ---- -- -- -- -- -- -- 11/16/00 367.49 --

Appendix. Water--level elevations for wells in the Breezy Hill area, Aiken and Edgefield Counties, South Carolina, April 1999-November 2000 (Continued) [Shaded values indicate that data were used to construct the average water-level map. USGS ID, U.S. Geological Survey well identifier. Latitude and longitude are expressed in degrees (°) and minutes ('); specific coordinates are available upon request. --, no data]

USGS

ID Latitude Longitude

Elevation of 

land surface 

(feet, above 

sea level)

Well depth 

(feet, below 

land 

surface)

Elevation of 

top of

open zone 

(feet, above 

sea level)

Elevation of 

bottom of 

open zone

(feet, above/below

sea level)

Aquifer system designation for 

water-level 

measurement

Date of 

water-level 

measurement

Elevation of 

water level 

(feet, above 

sea level)

Average 

elevation of 

water level 

(feet, above 

sea level)
Appendix 33

-- -- -- -- -- -- -- -- -- 368.78

AK-2518 33°36' 81°50' 462 -- -- -- Undetermined 07/19/99 363.42 --

-- -- -- -- -- -- -- 02/15/00 361.18 ---- -- -- -- -- -- -- 04/17/00 360.45 ---- -- -- -- -- -- -- 07/26/00 360.33 ---- -- -- -- -- -- -- 09/12/00 360.03 ---- -- -- -- -- -- -- 10/11/00 359.80 ---- -- -- -- -- -- -- 11/16/00 359.78 ---- -- -- -- -- -- -- -- -- 360.71

AK-2521 33°32' 81°53' 203 70 153 133 Crystalline bedrock 12/14/99 196.29 --

-- -- -- -- -- -- -- 02/24/00 196.42 ---- -- -- -- -- -- -- 04/19/00 196.09 ---- -- -- -- -- -- -- 07/26/00 195.41 ---- -- -- -- -- -- -- 09/01/00 195.71 ---- -- -- -- -- -- -- 10/17/00 195.79 ---- -- -- -- -- -- -- 11/16/00 195.85 ---- -- -- -- -- -- -- -- -- 195.94

AK-2522 33°37' 81°50' 479 112 397 367 Floridan-Midville 12/14/99 402.16 --

-- -- -- -- -- -- -- 02/15/00 401.77 ---- -- -- -- -- -- -- 04/06/00 401.62 ---- -- -- -- -- -- -- 07/26/00 399.79 ---- -- -- -- -- -- -- 08/22/00 399.60 ---- -- -- -- -- -- -- 10/10/00 400.38 ---- -- -- -- -- -- -- 11/17/00 400.32 ---- -- -- -- -- -- -- -- -- 400.81

AK-2523 33°36' 81°52' 368 -- -- -- Undetermined 12/06/99 342.20 --

-- -- -- -- -- -- -- 02/28/00 343.11 ---- -- -- -- -- -- -- -- -- 342.66

AK-2524 33°33' 81°53' 359 112 287 247 Floridan-Midville 12/20/99 274.63 --

-- -- -- -- -- -- -- 02/29/00 274.34 ---- -- -- -- -- -- -- 04/21/00 274.12 ---- -- -- -- -- -- -- 07/21/00 275.09 ---- -- -- -- -- -- -- 09/28/00 275.07 ---- -- -- -- -- -- -- 10/13/00 273.13 ---- -- -- -- -- -- -- 11/16/00 275.14 ---- -- -- -- -- -- -- -- -- 274.50

AK-2526 33°31' 81°54' 290 125 185 165 Floridan-Midville 12/29/99 200.64 --

-- -- -- -- -- -- -- 02/29/00 200.54 --

Appendix. Water--level elevations for wells in the Breezy Hill area, Aiken and Edgefield Counties, South Carolina, April 1999-November 2000 (Continued) [Shaded values indicate that data were used to construct the average water-level map. USGS ID, U.S. Geological Survey well identifier. Latitude and longitude are expressed in 

degrees (°) and minutes ('); specific coordinates are available upon request. --, no data]

USGS

ID Latitude Longitude

Elevation of 

land surface 

(feet, above 

sea level)

Well depth 

(feet, below 

land 

surface)

Elevation of 

top of

open zone 

(feet, above 

sea level)

Elevation of 

bottom of 

open zone

(feet, above/below

sea level)

Aquifer system 

designation for 

water-level 

measurement

Date of 

water-level 

measurement

Elevation of 

water level 

(feet, above 

sea level)

Average 

elevation of 

water level 

(feet, above 

sea level)
34 Ground-Water Levels in the Floridan-Midville Aquifer in the Breezy Hill Area, Aiken and Edgefield Counties, South Carolina, 

April 1999–November 2000

-- -- -- -- -- -- -- 04/19/00 200.73 ---- -- -- -- -- -- -- 07/21/00 200.98 ---- -- -- -- -- -- -- 09/01/00 200.22 ---- -- -- -- -- -- -- 10/16/00 200.50 ---- -- -- -- -- -- -- 11/13/00 200.67 ---- -- -- -- -- -- -- -- -- 200.61

AK-2527 33°33' 81°55' 445 150 315 295 Floridan-Midville 12/28/99 329.95 --

-- -- -- -- -- -- -- 02/29/00 330.96 ---- -- -- -- -- -- -- 04/21/00 328.96 ---- -- -- -- -- -- -- 07/27/00 329.15 ---- -- -- -- -- -- -- 09/28/00 331.25 ---- -- -- -- -- -- -- 10/13/00 331.37 ---- -- -- -- -- -- -- 11/16/00 331.32 ---- -- -- -- -- -- -- -- -- 330.42

AK-2528 33°34' 81°52' 348 90 268 258 Floridan-Midville 12/28/99 278.21 --

-- -- -- -- -- -- -- 02/29/00 278.32 ---- -- -- -- -- -- -- 04/21/00 278.51 ---- -- -- -- -- -- -- 07/20/00 278.02 ---- -- -- -- -- -- -- 09/28/00 278.09 ---- -- -- -- -- -- -- 10/13/00 278.19 ---- -- -- -- -- -- -- 11/16/00 278.25 ---- -- -- -- -- -- -- -- -- 278.23

AK-2529 33°32' 81°50' 220 80 -- -- Undetermined 05/01/00 198.29 --

-- -- -- -- -- -- -- 07/19/00 197.66 ---- -- -- -- -- -- -- 09/01/00 197.36 ---- -- -- -- -- -- -- 10/16/00 197.18 ---- -- -- -- -- -- -- 11/13/00 196.90 ---- -- -- -- -- -- -- -- -- 197.48

AK-2530 33°33' 81°50' 331 -- -- -- Undetermined 05/01/00 244.67 --

-- -- -- -- -- -- -- 07/18/00 243.90 ---- -- -- -- -- -- -- 08/31/00 244.05 ---- -- -- -- -- -- -- 10/16/00 243.74 ---- -- -- -- -- -- -- 11/13/00 243.56 ---- -- -- -- -- -- -- -- -- 243.98

AK-2531 33°30' 81°52' 169 -- -- -- Undetermined 05/03/00 157.51 --

-- -- -- -- -- -- -- 07/19/00 157.39 ---- -- -- -- -- -- -- 09/01/00 157.36 ---- -- -- -- -- -- -- 10/16/00 157.25 --

Appendix. Water--level elevations for wells in the Breezy Hill area, Aiken and Edgefield Counties, South Carolina, April 1999-November 2000 (Continued) [Shaded values indicate that data were used to construct the average water-level map. USGS ID, U.S. Geological Survey well identifier. Latitude and longitude are expressed in degrees (°) and minutes ('); specific coordinates are available upon request. --, no data]

USGS

ID Latitude Longitude

Elevation of 

land surface 

(feet, above 

sea level)

Well depth 

(feet, below 

land 

surface)

Elevation of 

top of

open zone 

(feet, above 

sea level)

Elevation of 

bottom of 

open zone

(feet, above/below

sea level)

Aquifer system designation for 

water-level 

measurement

Date of 

water-level 

measurement

Elevation of 

water level 

(feet, above 

sea level)

Average 

elevation of 

water level 

(feet, above 

sea level)
Appendix 35

-- -- -- -- -- -- -- 11/13/00 157.10 ---- -- -- -- -- -- -- -- -- 157.32

AK-2532 33°33' 81°49' 255 40 223 215 Floridan-Midville 07/30/99 227.94 --

-- -- -- -- -- -- -- 11/16/99 227.21 ---- -- -- -- -- -- -- 02/29/00 227.34 ---- -- -- -- -- -- -- 04/20/00 227.37 ---- -- -- -- -- -- -- 07/18/00 226.78 ---- -- -- -- -- -- -- 08/31/00 226.51 ---- -- -- -- -- -- -- 10/13/00 226.40 ---- -- -- -- -- -- -- 11/13/00 226.28 ---- -- -- -- -- -- -- -- -- 226.98

AK-2540 33°36' 81°53' 500 150 370 350 Floridan-Midville 12/30/99 379.94 --

-- -- -- -- -- -- -- 02/25/00 379.52 ---- -- -- -- -- -- -- 04/19/00 379.01 ---- -- -- -- -- -- -- 07/27/00 378.71 ---- -- -- -- -- -- -- 09/22/00 378.51 ---- -- -- -- -- -- -- 10/11/00 378.35 ---- -- -- -- -- -- -- 11/21/00 378.07 ---- -- -- -- -- -- -- -- -- 378.87

AK-2542 33°37' 81°50' 470 112 90 110 Floridan-Midville 11/18/99 400.84 --

-- -- -- -- -- -- -- 02/14/00 401.16 ---- -- -- -- -- -- -- 04/06/00 400.41 ---- -- -- -- -- -- -- 05/23/00 399.00 ---- -- -- -- -- -- -- 07/26/00 397.90 ---- -- -- -- -- -- -- 08/21/00 398.39 ---- -- -- -- -- -- -- 10/10/00 399.16 ---- -- -- -- -- -- -- 11/17/00 398.66 ---- -- -- -- -- -- -- -- -- 399.44

AK-2543 33°31' 81°52' 357 220 191 131 Floridan-Midville 09/22/99 203.08 --

-- -- -- -- -- -- -- 11/18/99 202.56 ---- -- -- -- -- -- -- 02/24/00 202.19 ---- -- -- -- -- -- -- 04/19/00 201.34 ---- -- -- -- -- -- -- 07/20/00 198.86 ---- -- -- -- -- -- -- 08/21/00 198.98 ---- -- -- -- -- -- -- 10/17/00 198.73 ---- -- -- -- -- -- -- 11/16/00 198.66 ---- -- -- -- -- -- -- -- -- 200.55

AK-2544 33°37' 81°51' 490 142 390 360 Floridan-Midville 11/18/99 405.43 --

Appendix. Water--level elevations for wells in the Breezy Hill area, Aiken and Edgefield Counties, South Carolina, April 1999-November 2000 (Continued) [Shaded values indicate that data were used to construct the average water-level map. USGS ID, U.S. Geological Survey well identifier. Latitude and longitude are expressed in 

degrees (°) and minutes ('); specific coordinates are available upon request. --, no data]

USGS

ID Latitude Longitude

Elevation of 

land surface 

(feet, above 

sea level)

Well depth 

(feet, below 

land 

surface)

Elevation of 

top of

open zone 

(feet, above 

sea level)

Elevation of 

bottom of 

open zone

(feet, above/below

sea level)

Aquifer system 

designation for 

water-level 

measurement

Date of 

water-level 

measurement

Elevation of 

water level 

(feet, above 

sea level)

Average 

elevation of 

water level 

(feet, above 

sea level)
36 Ground-Water Levels in the Floridan-Midville Aquifer in the Breezy Hill Area, Aiken and Edgefield Counties, South Carolina, 

April 1999–November 2000

-- -- -- -- -- -- -- 02/15/00 404.64 ---- -- -- -- -- -- -- 04/06/00 404.75 ---- -- -- -- -- -- -- 07/26/00 402.75 ---- -- -- -- -- -- -- 08/21/00 403.12 ---- -- -- -- -- -- -- 10/10/00 403.82 ---- -- -- -- -- -- -- 11/17/00 403.44 ---- -- -- -- -- -- -- -- -- 403.99

Edgefield County

EDG-328 33°38' 81°52' 511 48 478 463 Floridan-Midville 07/29/99 474.24 --

-- -- -- -- -- -- -- 11/08/99 473.93 ---- -- -- -- -- -- -- 02/14/00 473.62 ---- -- -- -- -- -- -- 04/06/00 474.09 ---- -- -- -- -- -- -- 07/05/00 473.58 ---- -- -- -- -- -- -- 08/22/00 473.40 ---- -- -- -- -- -- -- 10/10/00 473.61 ---- -- -- -- -- -- -- 11/21/00 473.79 ---- -- -- -- -- -- -- -- -- 473.78

EDG-329 33°38' 81°52' 512 51 482 461 Floridan-Midville 07/26/99 476.72 --

-- -- -- -- -- -- -- 11/08/99 476.35 ---- -- -- -- -- -- -- 02/14/00 476.11 ---- -- -- -- -- -- -- 04/06/00 476.53 ---- -- -- -- -- -- -- 07/05/00 476.07 ---- -- -- -- -- -- -- 08/22/00 475.92 ---- -- -- -- -- -- -- 10/10/00 476.08 ---- -- -- -- -- -- -- 11/21/00 476.25 ---- -- -- -- -- -- -- -- -- 476.25

Appendix. Water--level elevations for wells in the Breezy Hill area, Aiken and Edgefield Counties, South Carolina, April 1999-November 2000 (Continued) [Shaded values indicate that data were used to construct the average water-level map. USGS ID, U.S. Geological Survey well identifier. Latitude and longitude are expressed in degrees (°) and minutes ('); specific coordinates are available upon request. --, no data]

USGS

ID Latitude Longitude

Elevation of 

land surface 

(feet, above 

sea level)

Well depth 

(feet, below 

land 

surface)

Elevation of 

top of

open zone 

(feet, above 

sea level)

Elevation of 

bottom of 

open zone

(feet, above/below

sea level)

Aquifer system designation for 

water-level 

measurement

Date of 

water-level 

measurement

Elevation of 

water level 

(feet, above 

sea level)

Average 

elevation of 

water level 

(feet, above 

sea level)