Potentiometric surface of the Upper Floridan aquifer in the St. Johns River water management district and vicinity, Florida, September 2005
Open-File Report
2006-1108
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Abstract
This map depicts the potentiometric surface of the Upper Floridan aquifer in the St. Johns River Water Management District and vicinity for September 2005. Potentiometric contours are based on water-level measurements collected at 643 wells during the period September 12-28, near the end of the wet season. Some contours are 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 and springflow. 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., 2006, Potentiometric surface of the Upper Floridan aquifer in the St. Johns River water management district and vicinity, Florida, September 2005: U.S. Geological Survey Open-File Report 2006-1108, 1 map sheet, 36 x 52 in., https://doi.org/10.3133/ofr20061108.
ISSN: 2331-1258 (online)
ISSN: 0196-1497 (print)
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 2005 |
| Series title | Open-File Report |
| Series number | 2006-1108 |
| DOI | 10.3133/ofr20061108 |
| Year Published | 2006 |
| Language | ENGLISH |
| Contributing office(s) | Florida Integrated Science Center |
| Description | 1 map sheet, 36 x 52 in. |
| Time Range Start | 2005-09-01 |
| Time Range End | 2005-09-30 |
| Projection | UTM Zone 17 |
| Scale | 100000 |
| Online Only (Y/N) | N |