A September 1987 potentiometric-surface map of the intermediate aquifer system in west-central Florida depicts water levels for the annual high water-level period. Hydrographs show seasonal and annual changes that range from 0 to 30 ft or more in some years. September 1987 water levels averaged about 3 ft higher than May 1987 levels and about 2 ft lower than September 1986 levels. (USGS)
Additional publication details
USGS Numbered Series
Potentiometric surface of the intermediate aquifer system, west-central Florida, September 1987
1 map :photocopy ;40 x 34 cm., on sheet 92 x 66 cm.