166 FLORIDA GEOLOGICAL SURVEY—THIRD ANNUAL REPORT. 
proximately sixty feet above the St. Johns River. A four-inch 
well drilled for B. F. Dotney, in 1909 by H. Mervin reached a total 
depth of 365 feet. The water in this well rises to within 48 feet 
of the surface. A number of flowing wells have been obtained, 
however, along the river, near San Mateo. 
SATSUMA. 
No artesian wells are in use at Satsuma. The water used at 
this place conies from surface sands or clays at a depth varying 
from 25 to 46 feet. Flowing wells have been obtained along the 
river north of town. 
WELAKA. 
Welaka is located on the St. Johns River about twelve miles 
south of Palatka. Records of two wells have been obtained at this 
place. One of these is the well now owned by the Welaka Min¬ 
eral Water Company, a three-inch well, drilled in 1906. The 
first water under pressure was encountered at a depth of 160 feet. 
Below 160 feet the size of the boring was reduced to two inches and 
was continued to a total depth of 329 feet, at which depth a highly 
mineralized water is obtained. The well has 98 feet of three-inch 
casing and 213 feet of two-inch casing. The elevation of the well 
above the St. Johns River is reported to be 22 feet. The water in 
the well comes to within 16 feet of the surface or stands 6 feet 
above the level of the water in the St. Johns River. 
The following is an analysis of the water from this well. An¬ 
alysis by Robert Spurr Weston, 14 Beacon Street, Boston, Mass. 
Constituents. 
Silica . 
Alumina . 
Iron carbonate . 
Calcium chloride .. 
Calcium sulphate .. 
Calcium nitrate .... 
Magnesium bromide 
Magnesium chloride 
Magnesium carbonate 
Sodium chloride ... 
Potassium chloride . 
Parts per Million. 
-. 12.00 
. 8-57 
. 12.00 
. 586.32 
........... 697.75 
.Trace 
. 5.14 
. 50745 
. 241.72 
...8808.52 
.. • • • • 1370 
A second well at Welaka is owned by Mrs. Franklin Swift and 
was drilled by H. Mervin in 1909. This is a four-inch well and 
has a total depth of 151 feet. It is reported to be cased 104 feet 
and the water is said to stand eight feet below the surface. 
