THE ARTESIAN WATER SUPPLY OF EASTERN FLORIDA. 
153 
YELVINGTON. 
Records of two wells have been obtained from and near Yel- 
vington. Well No. i is located near Yelvington depot and is owned 
by E. L. Campbell This well was drilled by Frank Bartlett in 
1909 and reached a total depth of 352 feet. It is reported as hav¬ 
ing 95 feet of four-inch casing. The head of this well was measur¬ 
ed December 11, 1909. The water was found to stand at this 
time yy 2 feet below the surface. . 
Well No. 2 is located one mile west of Yelvington depot. It is 
a four-inch well and is owned by Campbell and Killingsworth. 
This well was drilled in 1907 by S. I. Killingsworth and is re¬ 
ported to be 300 feet deep, and cased 180 feet. The water is said 
to stand two feet below the surface. 
CLAY COUNTY. 
LOCATION AND SURFACE FEATURES. 
Clay County has a varied topography. The eastern portion bor¬ 
dering the St. Johns River is low and flat and consists largely of 
open pine woods. Extending westward from the river the elevation 
rises and the country becomes more rolling. The county is inter¬ 
sected by a number of streams, the largest of which is Black Creek, 
a tributary to the St. Johns River. This stream is navigable for 
small boats to or above Middleburg, at which point it divides, form¬ 
ing the north and south forks. The north fork rises in Lake Kings¬ 
ley, and with its tributaries drains the northwestern part of the 
county. The south fork rises in Blue Pond and other lakes and 
drains the central part of the county. In the southwestern part of 
the county many small lakes occur. 
The elevations in this county have been obtained from the 
levels made by the railroads crossing the county, including the Sea¬ 
board Air Line, the Atlantic Coast Line and the Georgia Southern 
and Florida Railway. In addition levels made during 1909 by the 
U. S. Engineers in connection with a preliminary survey for a 
ship canal have been available. These levels show that the water 
level in Lake Kingsley stood at the time the levels were made 170 
feet above sea. The measurements of depth show that this lake 
averages 58 to 60 feet, although one place was fou^d at which the 
depth exceeded 78 feet, the full length of the sounding line. The 
country surrounding this lake stands at or about 175 feet above sea. 
According to the levels made by the Seaboard Air Line Railway the 
town of Highland, in the northwestern part of the county, stands 
