| Abstract: | Recharge to the principal artesian aquifer in a six-county area in northeast Florida was calculated using closed contour methods , water budgets, and formulas for computing leakage through confining beds. Each estimate was tested in a computer model of groundwater flow to see which estimate was best. Calculations of flow medway between the 24- and 21-meter potentiometric contours show a total flow of 164,000 cubic meters per day, a significant part ofm which must be recharged within the closed 24-meter controur. Flow midway between the 18- and 15-meter contours was calculated to be 342,000 cubic meters per day. A water budget for the same area in water year 1972 indicates a potential recharge rate of 2,570,000 cubic meters per day. Digital modeling of ground-water flow in northeast Florida shows that the recharge rate calculated by closed contour is insufficient to balance the natural discharge of the regional ground-water system, whereas the rate calculated from water budgets is too great. Therefore, the best way to simulate the recharge mechanism of the northeast Florida flow model may be with a constant head boundary, rather than with constant flux. (Woodard-USGS) |
| Genre: | USGS Numbered Series |
| ProdID: | 29138 |
| Citation Author: | Phelps, G. G. |
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| Citation Language: | ENGLISH |
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| Citation Phsyical Description: | iv, 19 p. :maps ;27 cm. |
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| Citation Publisher: | U.S. Geological Survey, Water Resources Division, |
| Citation Series: | Water-Resources Investigations Report |
| Citation Series Code: | WRI |
| Citation Series Number: | 77-109 |
| Citation Search Results Text: | Methods of estimating recharge to the Floridan aquifer in northeast Florida; 1978; WRI; 77-109; Phelps, G. G. |
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| Citation Year: | 1978 |
| Type: | citation/reference |
| Text: | Methods of estimating recharge to the Floridan aquifer in northeast Florida; 1978; WRI; 77-109; Phelps, G. G. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/usgs_thumb.jpg |
| Date Other: | Sat, 1 Jan 1994 00:00 -0600 |
| Publisher: | U.S. Geological Survey, Water Resources Division, |
