| Abstract: | This map depicts the potentiometric surface of the Upper Floridan aquifer in the St. Johns River Water Management District and vicinity for September 2008. Potentiometric contours are based on water-level measurements collected at 589 wells during the period September 15-25, 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 spring flow. 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. |
| Genre: | USGS Numbered Series |
| ProdID: | 97375 |
| Citation Author: | Kinnaman, Sandra L.; Dixon, Joann F. |
| Citation Contributing Office: | Florida Integrated Science Center |
| Citation Datum: | |
| Citation Day: | |
| Citation Edition: | - |
| Citation Editor: | |
| Citation End Page: | |
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| Citation Keywords: | |
| Citation Language: | ENGLISH |
| Citation Larger Work Title: | |
| Citation LatN: | 0313000 |
| Citation LatS: | 0261500 |
| Citation LonE: | -0794500 |
| Citation LonW: | -0833000 |
| Citation Month: | |
| Citation No Pagination: | N |
| Citation Number Of Pages: | |
| Citation Online Only Flag: | Y |
| Citation Phsyical Description: | Map Sheet: 36 x 52 inches |
| Citation Projection: | State Plane Florida East |
| Citation Public Comments: | Prepared in cooperation with the St. Johns River Water Management District, the South Florida Water Management District, and the Southwest Florida Water Management District |
| Citation Publisher: | U.S. Geological Survey |
| Citation Series: | Scientific Investigations Map |
| Citation Series Code: | SIM |
| Citation Series Number: | 3070 |
| Citation Search Results Text: | Potentiometric Surface of the Upper Floridan Aquifer in the St. Johns River Water Management District and Vicinity, Florida, September 2008; 2009; SIM; 3070; Kinnaman, Sandra L.; Dixon, Joann F. |
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| Citation Volume: | |
| Citation Year: | 2009 |
| Type: | citation/reference |
| Text: | Potentiometric Surface of the Upper Floridan Aquifer in the St. Johns River Water Management District and Vicinity, Florida, September 2008; 2009; SIM; 3070; Kinnaman, Sandra L.; Dixon, Joann F. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/usgs_thumb.jpg |
| URL (INDEX PAGE): | http://pubs.usgs.gov/sim/3070/ |
| Date Other: | Tue, 17 Mar 2009 00:00 -0500 |
| Publisher: | U.S. Geological Survey |
