Potentiometric surface of the upper Floridan aquifer in the St. Johns River Water Management District and vicinity, Florida, September 2004
Open-File Report
2005-1202
Links
- More information: USGS Index Page (html)
- NGMDB Index Page: National Geologic Map Database Index Page (html)
- Download citation as: RIS | Dublin Core
Abstract
Introduction: This map depicts the potentiometric surface of the Upper Floridan aquifer in the St. Johns River Water Management District and vicinity in September 2004. Potentiometric contours are based on water-level measurements collected at 608 wells during the period September 14-October 1, near the end of the wet season. The shapes of some contours have been inferred from previous potentiometric-surface maps with larger well networks. The potentiometric surface of the carbonate Upper Floridan aquifer responds mainly to rainfall, and more locally, to ground-water withdrawals. Potentiometric-surface highs generally correspond to topographic highs where the aquifer is recharged. Springs and areas of diffuse upward leakage naturally discharge water from the aquifer and are most prevalent along the St. Johns River. Areas of discharge are reflected by depressions in the potentiometric surface. Ground-water withdrawals locally have lowered the potentiometric surface. Ground water in the Upper Floridan aquifer generally flows from potentiometric highs to potentiometric lows in a direction perpendicular to the contours.
Suggested Citation
Kinnaman, S.L., 2005, Potentiometric surface of the upper Floridan aquifer in the St. Johns River Water Management District and vicinity, Florida, September 2004: U.S. Geological Survey Open-File Report 2005-1202, 1 Plate: 36.00 x 52.00 inches, https://doi.org/10.3133/ofr20051202.
ISSN: 2331-1258 (online)
Study Area
| Publication type | Report |
|---|---|
| Publication Subtype | USGS Numbered Series |
| Title | Potentiometric surface of the upper Floridan aquifer in the St. Johns River Water Management District and vicinity, Florida, September 2004 |
| Series title | Open-File Report |
| Series number | 2005-1202 |
| DOI | 10.3133/ofr20051202 |
| Year Published | 2005 |
| Language | English |
| Publisher | U.S. Geological Survey |
| Description | 1 Plate: 36.00 x 52.00 inches |
| Country | United States |
| State | Florida |
| Other Geospatial | St. Johns River Water Management District |
| Scale | 500000 |