WATER SUPPRY OP PASTERN AND SOUTHERN PRORIDA. 247 
principal water supply for domestic purposes, in and around Ft. 
Pierce, is obtained from shallow wells, ranging in depth from 12 
to 50 feet. 
The following is a record of a well drilled at Ft. Pierce by 
H. Walker for the Florida East Coast Railway in 1912. The well 
is 814 feet deep and is cased with eight-inch casing 184 feet and 
9 inches, and with six-inch casing 570 feet and 10 inches. The 
head above the surface is 28 feet and 6 inches. The head above 
Indian River is 46 feet. The well flows 800 gallons per minute at 
the surface. The record has been kindly supplied by Mr. G. A. 
Miller, of the Florida East Coast Railway. 
Feet. 
Yellow sand . 0- 55 
Shell and sand . 55- 75 
Shell and gravel . 75- 85 
Shell, sand and clay . 85-120 
Blue clay and sand. 120-135 
Soft blue clay'and very fine sand. 135-145 
Blue clay and sand. 145-165 
Blue clay . 165-190 
Tough, dry blue clay. 190-200 
Soft sandy, blue clay . 200-250 
Hard sandy, blue clay. 250-300 
Smooth blue clay, no sand. 300-400 
Blue clay, very tough and sticky. 400-460 
Yellow clay, with black streaks in it. 460-500 
Yellow clay, with a few pebbles. 500-520 
Blue clay, tough and sticky. 520-545 
Very hard yellow clay . 545-555 
Blue clay, very sticky . 555-585 
Yellow clay in hard and soft layers. 585-600 
Yellow clay, very dry. 600-647 
Shell and soft rock.;. 647-656 
Tough white clay . 656-662 
Hard white rock . 662-676 
Soft rock, small flow . 676-685 
Soft limestone rock, flow increasing very slowly with 
depth . 685-807 
Hard rock. 807-814 
