| Abstract: | A digital groundwater flow model was developed to approximate steady-state predevelopment flow conditions in the Upper Floridan aquifer of coastal west-central Florida. The aquifer is the major source of water and natural spring flow in the area. The aquifer was simulated as a one-layer system with constant vertical recharge and discharge rates. Calibrated transmissivities ranged from 8,640 sq ft/day in the northern part of the area to nearly 13,000,000 sq ft/day near large springs. Calibrated inflows were about 2,708 cu ft/sec; of this, about 2,565 cu ft/sec discharged as natural spring flow and 137 cu ft/sec discharged as upward leakage along the coast. The model was used to show how the system might respond to large manmade stresses. Withdrawal of 116 cu ft/sec from a hypothetical regional well field resulted in potentiometric-surface drawdowns ranging from 0.1 to 1.7 ft and declines of generally less than 0.2 ft along the coast. Total spring flow decreased 5%, and the effect on individual springs varied from 0.1 to 8.0%. Withdrawal of 62 cu ft/sec from the 4-sq-mi node at each spring resulted in six of seven springs to the south of the Chassahowitzka River contributing 50% of their flow to pumpage. Springs located north of the Chassahowitzka River contributed as much as 18% of their flow to pumpage. (USGS) |
| Genre: | USGS Numbered Series |
| ProdID: | 30621 |
| Citation Author: | Yobbi, D. K. |
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| Citation Language: | ENGLISH |
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| Citation Phsyical Description: | iv, 33 p. :ill., maps ;28 cm. |
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| Citation Publisher: | U.S. Geological Survey ;
Copies of this report can be purchased from U.S. Geological Survey, Books and Open-File Reports Section, |
| Citation Series: | Water-Resources Investigations Report |
| Citation Series Code: | WRI |
| Citation Series Number: | 88-4036 |
| Citation Search Results Text: | Simulation of steady-state ground water and spring flow in the upper Floridan aquifer of coastal Citrus and Hernando Counties, Florida; 1989; WRI; 88-4036; Yobbi, D. K. |
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| Citation Year: | 1989 |
| Type: | citation/reference |
| Text: | Simulation of steady-state ground water and spring flow in the upper Floridan aquifer of coastal Citrus and Hernando Counties, Florida; 1989; WRI; 88-4036; Yobbi, D. K. |
| URL (THUMBNAIL): | http://pubs.usgs.gov/wri/1988/4036/report-thumb.jpg |
| URL (DOCUMENT): | http://pubs.usgs.gov/wri/1988/4036/report.pdf |
| Date Other: | Sat, 1 Jan 1994 00:00 -0600 |
| Publisher: | U.S. Geological Survey ;
Copies of this report can be purchased from U.S. Geological Survey, Books and Open-File Reports Section, |
