222 FLORIDA STATE GEOLOGICAL SURVEY. 
Coast Line Railroad which traverses this ridge are as follows: 
Seville, 52 feet; Pierson, 78 feet. 
WATER-BEARING FORMATIONS. 
No complete set of well samples having been obtained from 
any one well in Volusia County the information regarding the 
underlying formations is very meager. In the city well at De- 
Land the first Water was obtained at a depth of 113 feet after 
passing through eight feet of clay and entering a twelve-foot 
shell stratum. The stratum of shell overlies a bed of rock re¬ 
ported to be 24 feet thick. The next rock encountered is at a 
■depth of 237 to 247 feet. At Daytona the Vicksburg Limestone, 
as shown by the comparatively shallow depths of the wells, lies 
close to the surface and is presumably reached at from 125 to 
150 feet. 
AREA OF ARTESIAN FLOW IN VOLUSIA COUNTY. 
The area of artesian flow in Volusia County is confined to a 
strip bordering the Atlantic Ocean on the east and a strip on the 
west bordering the St. Johns River. This area is indicated on the 
accompanying map. There are no doubt areas not mapped where 
flowing wells can be obtained. The area mapped, however, is 
based on definite information and on well records. In the north¬ 
ern portion of the county flowing wells are obtained as far west 
as Crescent Lake. This part of the county is flat and of low 
altitude. 
LOCAL DETAILS. 
DAYTONA. 
Daytona lies in the flowing artesian section in eastern Volusia 
County, along the western bank of Halifax River. The city is 
supplied with water from four artesian wells, all of which are six 
inches in diameter. These wells were drilled in 1909, but in order 
to obtain an increased flow were deepened in 1910 and now range 
in depth from 165 to 260 feet. The 260-foot well on April 7, 1910, 
