Potentiometric surface of the upper Floridan Aquifer in the St. Johns River Water Management District and vicinity, Florida, May 1985

Schiner, George R.; Hayes, Eugene C.

doi:10.3133/ofr85491

Cited by 2 publications

(1 citation statement)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Newnans and Lochloosa Lakes also interact with the underlying upper Floridan aquifer through lake bottoms. According to the potentiometric contour maps developed by the SJRWMD staff for the regional groundwater system (http://www.sjrwmd.com/gisdevelopment/docs/themes.html, accessed August 8, 2010; see also Schiner and Hayes, 1985; Motz et al. , 1995), Lochloosa Lake is located in the discharge area of the groundwater system, meaning Lochloosa Lake receives discharge from groundwater.…”

Section: Study Areamentioning

confidence: 99%

Estimating Water Budgets and Vertical Leakages for Karst Lakes in North-Central Florida (United States) Via Hydrological Modeling1

Lin

2011

JAWRA Journal of the American Water Resources Association

View full text Add to dashboard Cite

Newnans, Lochloosa, and Orange Lakes are closely hydrologically connected karst lakes located in north-central Florida, United States. The complex karst hydrology in this region poses a great challenge to the hydrological modeling that is essential to the development of Total Maximum Daily Loads for these lakes. We used a Hydrological Simulation Program -Fortran model coupled with the parallel Parameter ESTimation model calibration and uncertainty analysis software to estimate effectively the hydrological interactions between the lakes and the underlying upper Floridan aquifer and the water budgets for these three lakes. The net results of the lake-groundwater interactions in Newnans and Orange Lakes are that both lakes recharge the underlying upper Floridan aquifer, with the recharge rate of the latter one magnitude greater than that of the former. However, for Lochloosa Lake, the net lake-groundwater interaction is that the lake gains water from groundwater in a significant amount, approximately 40% of its total terrestrial water input. The annual average vertical leakages estimated for Newnans, Lochloosa, and Orange Lakes are 6.0 · 10 6 , )8.9 · 10 6 , and 44.4 · 10 6 m 3 , respectively. The average vertical hydraulic conductance (K v ⁄ b) of the units between a lake bottom and the underlying upper Floridan aquifer in this region are also estimated to be from 1.26 · 10 )4 to 1.01 · 10 )3 day )1 .(KEY TERMS: HSPF; karst hydrology; lake water budget; optimization; surface water ⁄ groundwater interaction.)

show abstract

Section: Study Areamentioning

confidence: 99%

Estimating Water Budgets and Vertical Leakages for Karst Lakes in North-Central Florida (United States) Via Hydrological Modeling1

Lin

2011

JAWRA Journal of the American Water Resources Association

View full text Add to dashboard Cite

show abstract

Ground-water recharge in Florida — A pilot study in Okaloosa, Pasco, and Volusia counties

Vecchioli¹,

Tibbals²,

Duerr³

et al. 1990

View full text Add to dashboard Cite

Protection of groundwater recharge areas against incursions of development is of great interest in Florida, a State whose population depends heavily on ground water and that is experiencing rapid growth. The Florida Legislature is considering implementation of a program to provide favorable tax treatment to owners of high-rate recharge lands that are left in an undeveloped state. Implementation would require delineation of such lands at a scale large enough to be useful to tax assessors. The U.S. Geological Survey undertook a pilot study with the Florida Department of Environmental Regulation to explore the feasibility of mapping high-rate recharge areas at a scale of 1:100,000. Recharge maps at that scale were compiled for Okaloosa, Pasco, and Volusia Counties. These maps delineate areas of high-rate recharge to the surficial aquifer and to the Upper Floridan aquifer. High-rate recharge was arbitrarily set at 10 or more inches per year. Recharge rates were determined primarily through analysis of streamflow, spring flow, and pumpage data together with knowledge of the groundwater flow system and topographic and soils information. Quantitative mapping of recharge using these techniques may not be possible in some parts of the State, but mapping on a qualitative basis is considered feasible. Amendment needs to be demonstrated. Accordingly, the Bluebelt Commission, which was empowered by the Florida Legislature to study the feasibility and effects of implementation of the Bluebelt Amendment, authorized a study to be done by the U.S. Geological Survey, in cooperation with the Florida Department of Environmental Regulation, to evaluate the feasibility of delineating high-rate recharge areas throughout the State. The counties 091 091 091 113 113 113 113 113 113 113

show abstract

Potentiometric surface of the upper Floridan Aquifer in the St. Johns River Water Management District and vicinity, Florida, May 1985

Cited by 2 publications

References 0 publications

Estimating Water Budgets and Vertical Leakages for Karst Lakes in North-Central Florida (United States) Via Hydrological Modeling1

Estimating Water Budgets and Vertical Leakages for Karst Lakes in North-Central Florida (United States) Via Hydrological Modeling1

Ground-water recharge in Florida — A pilot study in Okaloosa, Pasco, and Volusia counties

Contact Info

Product

Resources

About