2015 GSA Annual Meeting in Baltimore, Maryland, USA (1-4 November 2015)

TOBIN, Benjamin W.¹, SCHWARTZ, Benjamin F.², SPRINGER, Abraham E.³, STEVENS, Larry⁴, LEDBETTER, Jeri⁵, VALLE, Cynthia M.⁶ and SCHENK, Edward R.⁶, (1)Science and Resource Management, Grand Canyon National Park, 1824 S Thompson St, Flagstaff, AZ 86001, (2)Edwards Aquifer Research and Data Center, Texas State University, 601 University Drive, San Marcos, TX 78666, (3)School of Earth Sciences and Environmental Sustainability, Northern Arizona University, NAU Box 4099, Flagstaff, AZ 86011, (4)Museum of Northern Arizona, Flagstaff, AZ 86001, (5)Museum of Northern Arizona, 3101 N Fort Valley Rd, Flagstaff, AZ 86001, (6)National Park Service, Grand Canyon NP, Grand Canyon, AZ 86023, benjamin_tobin@nps.gov

JONES, William K., Karst Waters Institute, Leesburg, VA 20177, wkj30@hotmail.com

WONG, Stephanie, Geology, Baylor University, One Bear Place #97354, Waco, TX 76798 and YELDERMAN Jr., Joe C., Department of Geology, Baylor University, One Bear Place #97354, Waco, TX 76798, stephanie_wong@baylor.edu

SPANGLER, Lawrence E., Interior, U.S. Geol Survey, 2329 W. Orton Circle, Salt Lake, UT 84119, spangler@usgs.gov

WONG, Corinne I., Earth and Environmental Science, Boston College, 140 Commonwealth Ave, Chestnut Hill, MA 02467 and BANNER, Jay, Jackson School of Geosciences, University of Texas at Austin, Austin, TX 78712, wongcw@bc.edu

BEDDOWS, Patricia A.¹, MANDIC, Magda², FORD, Derek C.³ and SCHWARCZ, Henry P.³, (1)Department of Earth and Planetary Sciences, Northwestern University, Evanston, IL 60208-3130, (2)Thermo Fisher Scientific, Hanna-Kunath-Straße 11, Bremen, 28199, Germany, (3)School of Geography and Earth Sciences, McMaster University, Hamilton, ON L8S 4K1, Canada, patricia@earth.northwestern.edu

COOPER, Max P. and COVINGTON, Matthew D., Department of Geosciences, University of Arkansas, 216 Ozark Hall, Fayetteville, AR 72701, mpcooper@email.uark.edu

GANDEE, Michele N.¹, VALLE, Cynthia M.¹, TOBIN, Benjamin W.², HOFFMAN, Claire¹, CHILDRES, Hampton¹ and SCHENK, Edward R.¹, (1)National Park Service, Grand Canyon NP, Grand Canyon, AZ 86023, (2)Grand Canyon National Park, National Park Service, 1824 S Thompson St, Flagstaff, AZ 86001, Michele_gandee@partner.nps.gov

BEDDOWS, Patricia A., Department of Earth and Planetary Sciences, Northwestern University, Evanston, IL 60208-3130 and MALLON, Edward K., Triple Point Design, LLC, Evanston, IL 60202, patricia@earth.northwestern.edu

TURNER, Noel L., Department of Geosciences, University of Arkansas, 216 Ozark Hall, Fayetteville, AR 72701, KNIERIM, Katherine J., Environmental Dynamics Program, University of Arkansas, Fayetteville, AR 72701, BLACKSTOCK, Joshua M., U.S. Geological Survey, Little Rock, AR 72211, KRESSE, Tim M., Water Science Center, US Geological Survey, 401 Hardin Rd, Little Rock, AR 72211 and HAYS, Phillip D., Arkansas Water Science Center, U.S. Geological Survey, Department of Geosciences, University of Arkansas, Fayetteville, AR 72701, nlt001@uark.edu

VESPER, Dorothy J., Department of Geology & Geography, West Virginia University, Morgantown, WV 26506, djvesper@mail.wvu.edu

SCHINDEL, Geary M., Edwards Aquifer Authority, 900 E. Quincy Street, San Antonio, TX 78215, gschindel@edwardsaquifer.org