164 FLORIDA GEOLOGICAL SURVEY--THIRD ANNUAL REPORT.
detic Survey is thirteen feet above sea. Records from 35 wed have been obtained from and in the vicinity of Palatka.
The first flowing water encountered at Palatka is obtained from a shell stratum at a depth varying from 30 to 6o feet. A p efat many wells in the city terminate at this depth. The water from this formation is more or less hard but is not so strongly impregnated with hydrogen sulphide gas as is the water from the deeper water bearing formations.
These more shallow wells at one time ceased to flow and pumps had to be resorted to. When the deeper wells were put in, the shallow wells in this vicinity commenced flowing again. As an instance of this the well now owned by Messrs. L. H. and W. A. Merryday and located in the yard of the Putnam House may be cited. This is a two-inch well and is 50 feet deep. It is reported as being cased the total depth. The well flowed when first put in but in subsequent years had ceased to flow. During the year 19o8 Mr. H. Mervin drilled a four-inch well for Dr. G. E. Welch about two blocks to the north. This well reached a total depth of 220 feet and is reported cased 12o feet. Immediately on the completion of this well the Merryday well commenced to flow. This seems to indicate that these wells are supplied with water through leakage from the wells reaching the deeper water bearing strata.
The principal flow in and near Palatka is obtained from a depth of 175 to 250 feet. At this depth an abundance of water is obtained having a head varying from 18 to 26 feet above sea. A measurement was made of the pressure in the well of A. D. Curry about three-fourths of a mile southwest of Palatka in December, 1909. The well at this time was found to have a pressure of eleven and one-half pounds. The pressure was taken at the top of the pipe which stands about two feet above the surface of the ground.
A number of wells have been put down across the river and in the vicinity of East Palatka. The elevation of the depot at East Palatka as given by the Coast and Geodetic Survey is seventeen feet above sea level. A four-inch well drilled for H. Hanna at this place by N. H. Monck in 19o9 reached a depth of 225 feet. It is reported cased 135 feet and the water is reported as rising fifteen feet above the surface. A second well drilled for the Florida East Coast Railway by N. H. Monck in 19o9 was drilled to a depth of 256 feet. This is a four-inch well and is reported cased 135 feet. The water is said to rise fifteen feet above the surface.
The following is an analysis of the water from the city well at Palatka. The water was sent in by Dr. E. S. Crill. Analysis made in the office of the State Chemist, B. H. Bridges, analyst.