Hydrologic Study of Seepage Wetlands on the SC Coastal Plain

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Acknowledgements. Steve Bennett (SCDNR)John Nelson (USC)Ralph Willoughby (SCGS)Bill Clendenin (SCGS)Melissa Batty (SCGS/USC)Norm Brunswig (ASC)Hank Stallworth/Ann Nolte (SCDNR)Lauren Felker and other students at USCCharleston Natural History SocietyColumbia Audubon SocietyResearch funded by SCDNR, ASC, CAS.

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Hydrologic Study of Seepage Wetlands on the SC Coastal Plain

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1. Hydrologic Study of Seepage Wetlands on the SC Coastal Plain Turkey Creek Cooperators meeting 27 February 2008 Dan Tufford, Ph.D. University of South Carolina tufford@sc.edu

2. Acknowledgements Steve Bennett (SCDNR) John Nelson (USC) Ralph Willoughby (SCGS) Bill Clendenin (SCGS) Melissa Batty (SCGS/USC) Norm Brunswig (ASC) Hank Stallworth/Ann Nolte (SCDNR) Lauren Felker and other students at USC Charleston Natural History Society Columbia Audubon Society Research funded by SCDNR, ASC, CAS

3. Seepage wetlands Occur at or near the base of slopes and bluffs Typically at the outer edge of a stream corridor Primary water source is emerging subsurface water

5. Seepage wetlands Hydrogeomorphic setting is fairly common on the Coastal Plain Occurrence of the wetlands is largely unknown Can be a dominant feature

6. Seepage wetlands Research in similar systems suggests importance to local and regional biodiversity, water quality, hydrology Not much work directed specifically at these wetlands

7. Seepage wetland study Two sites initially: Beidler Forest and Wannamaker Nature Preserve Two more 2nd year Beidler Forest and Singleton Plantation Two seeps at each site Herps, flora, hydrology, water quality Spatial and temporal variability Seasonal and interannual Precipitation response

8. Instrumentation

9. Water table profile - winter

10. Water table profile - summer

11. Temperature profiles BF01 BF04

12. Beidler Forest (Four Holes Swamp) sites Seeps and springs emerge along the top of the Ashley Formation, part of the Cooper Group limestone (based on Weems et al 1997)

13. Calhoun County sites Seeps and springs emerge near the base of the Congaree Formation; overlays Lang Syne Formation (clayey sand) in much of the area (based on Willoughby 2003)

14. What next? Differences among seeps Objective metric(s) for discrimination Better understanding of: Temperature dynamics spatial and temporal Prevalence of seeps on the Coastal Plain 3D water profiles Water source Role of soils in water and water quality Develop habitat model(s)

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