262 
FLORIDA STATE GEOLOGICAL SURVEY. 
from this depth was salty and the well was subsequently filled to 
about 400 feet. The casing was broken and fresh water admitted 
at this depth. The water in the wells at this locality is reported 
to stand at about seven feet from the surface. 
Fig 14.— Map showing of artesian flow in Polk County. The area in 
which flowing wells have been obtained is indicated by shading. 
POLK COUNTY. 
LOCATION AND SURFACE FEATURES. 
Polk County includes a land area of 1,967 square miles. The 
Lake Region crosses the central part of this county, and the 
principal pebble phosphate deposits of the State are found in the 
western part of the county. The following elevations are 
recorded along the Atlantic Coast Line Railroad, which crosses 
the county from east to west and from north to south: Auburn- 
