190 
FLORIDA GEOLOGICAL. SURVEY—THIRD ANNUAL REPORT. 
miles south of Rockledge, is used for this purpose. The well has 
a reported depth of 480 feet. A gauge on the well indicated a 
pressure of 12*4 pounds, March to, 1910, or a head of 28.8 feet 
above this point. The gauge was estimated to be ten feet above 
the level of the water in the river, thus giving the well a total head 
of 38.8 feet above the river level. The water contains a trace of 
sail as is common to the wells in this vicinity. 
The well of Mr. H. S. Williams is of particular interest in that 
it is the only well in this vicinity of which a log has been obtained. 
It was drilled about 1890 and is 304 feet deep. It is three inches 
in diameter and is cased 130 feet. The following is a log of this 
well as reported by Mr. Williams: 
Sand and soil ..... 
Coquina rock . 
Sand ...... 
Sand rock. 
Blue clay .;.... ..... 
Hard flint rock. At this depth water rose to the surface, 
small stream. 
Rock in layer from 3 to 18 inches thick. 
Hard rock...... 
Soft rock .. 
Hard rock, good flow of water . 
Feet. 
0 
- 10 . 
. 10 
- 30 
. 30 
-IOO 
. IOO 
-140 
. 140 
-170 
. 170 
-173 
.173 
-269 
.269 
-273 
• 273 
-278 2-3 
.278 
2-3-304 2-3 
The first flow in the well as will be seen by consulting the log, 
was obtained from a depth of 170-173 feet. At this depth 3 feet of 
hard flint rock was encountered and on penetrating this stratum the 
first water-bearing formation was reached. 
SHARPES. 
Several flowing wells occur in and near Sharpes. The water 
here contains salt to such an extent that it cannot be used for ir¬ 
rigation. The well of J. W. Spafford furnished the following 
‘record. The well is four inches in diameter and 200 feet deep. It 
is reported cased only about 40 feet, and to have a head of 10 feet 
above the surface. The first flow was encountered at 70 feet am, 
it is reported by the driller, Capt. W. H. Sharpes, that neither the 
head nor the volume increased with the depth. As indicated from 
the well records and from all obtainable information, only a small 
amount of casing was used in the wells in this vicinity and a knowl ¬ 
edge as to whether or not fresh water was encountered below the 
stratum of salt water is therefore lacking. 
