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Surface- and Groundwater Interactions with Lake

Panasoffkee

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Location

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Background

Lake Panasoffkee is the largest lake in the Withlacoochee River basin.

Major headwater of the Withlacoochee River.

Groundwater inflow is a large component of the lake’s water budget.

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Shallow Hydrogeology

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Deep Hydrogeology

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ObjectiveAssess the hydraulic connection between Lake Panasoffkee and the underlying Upper Floridan aquifer

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Approach

• Establish areas of recharge/discharge potential to the Upper Floridan aquifer.

• Calculate the lake water budget.

• Determine the water chemistry of the lake, tributaries, springs, and groundwater system.

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Recharge/Discharge Potential

May 2008

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Recharge/Discharge Potential

September 2008

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Water BudgetStream and Rain Gages

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Water BudgetStream and Spring Gages

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Water BudgetEvaporation Raft

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Water BudgetSeepage Run – March ‘07

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Water Budget

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Approach – Hydraulic ConnectionWater Chemistry

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Water ChemistryMajor Ions

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Water ChemistryStrontium Isotopes

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Water ChemistryConceptual Model

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Products

http://fl.water.usgs.gov/publications/recentpubs