200 
FLORIDA STATE GEOLOGICAL SURVEY. 
of the north forks, one and one-half miles from Middleburg, 
shows three feet of the Jacksonville formation. 
AREA OF ARTESIAN FLOW IN CLAY COUNTY. 
The area of artesian flow in Clay County is confined to that 
portion bordering the St. Johns River and its tributaries. As has 
already been stated, upon leaving these streams the elevation soon 
becomes too great for a flow to be obtained. The location of 
successful flowing wells, together with the consideration of the 
elevation, will aid in the determination of the flowing and non¬ 
flowing sections , in the county. The flowing area in this county 
is outlined on t'he accompanying map: 
LOCAL DETAILS. 
DOCTORS INLET. 
A well owned by D. D. Denham and drilled in 1908 by D. C. 
Stafford is located near Doctors Inlet. This is a four-inch well, 
372 feet deep, in w'hich the water is said to rise twelve to fifteen 
feet above the surface. 
A second well, two and a half miles east of Doctors Inlet, was 
drilled by H. Mervin for Messrs. DeLoach & Edwards in 1907. 
This is a three-inch well and is 400 feet deep. It is reported cased 
120 feet and the water is said to rise twelve feet above the sur¬ 
face. Blue marl or clay from the depth of 198 to 398 feet is re¬ 
ported as encountered in this well. Immediately below this blue 
marl or clay the first hard rock was struck. 
GREEN COVE SPRINGS. 
€> 
Green Cove Springs, the county seat of Clay County, is sup¬ 
plied with water from two artesian wells. These wells are under 
private ownership. One is owned by N. B. Ivey, the other by 
O. A. Buddington. The well owned by Mr. Ivey is 815 feet 
deep, four inches in diameter, and cased 556 feet. The well is 
reported to have a head of 23 feet above the surface. The eleva- 
