138 FLORIDA GEOLOGICAL SURVEY-THIRD ANNUAL REPORT.
LOCAL DETAILS
BALDWIN.
Baldwin is located on the Seaboard Air Line Railway nineteen miles west of Jacksonville. The elevation is approximately 86 feet above sea. Three wells have been drilled at or near Baldwin. The deepest of these located at the Atlantic Coast Line Railroad crossing one-half mile north of Baldwin is reported to reach a total depth of 580 feet and is cased 51I feet. A second well niearby reaches a depth of oo feet. A third well located at Baldwin reaches a depth of 92 feet. All of these wells are non-flowing although the water rises within a few feet of the surface. The distance at which the Water stands from the surface in the deep well is not reported beyond the statement that the well is non-flowir:g.
BAYARD.
Bayard is located on the Florida East Coast Railway fifteen miles south of Jacksonville. The elevation of this place is approximately 22 feet above sea. Flowing water is obtained at Bayard, one well having been put down for the Cotter-Lucas Co. This is a three inch well reported to have been drilled to a depth of 28o feet. The water here will rise at least fifteen feet above the surface.
JACKSONVILLE.
The large number of wells occurring at Jacksonville precludes the possibility of listigg or describing all. Probably not less than five hundred flowing wells occur in or near this city.
The first flow obtained at Jacksonville according to the records of the city well was a light flow from a depth of 487 feet. A large flow, however, is not obtained until the drill enters the Vicksburg limestones at a depth of about 524 feet. After reaching the Vicksburg the flow increases upon breaking each compact layer. At a depth of 632 feet the flow in the new city well was found to be oiie million gallons per day. At the depth of 980 feet the same welt supplied a flow of two million gallons per day.
The material penetrated in the drilling at Jacksonville for a depth of about 500 feet consists largely of clays, sandy clays, and sands with some fossiliferous limestone and some shell deposits. From about 500 to 524 feet the record shows considerable dense hard rock.. After penetrating this stratum the limestones of the Vicksburg group are reached.