2007 Ground Water Summit

Tuesday, May 1, 2007: 10:00 a.m.-3:30 p.m.
Ruidoso (Albuquerque Convention Center)
Estimation of Recharge to Assess Ground Water Availability
Increased demands on water resources by a growing population and recent droughts have raised awareness about the adequacy of water supplies throughout the United States. Quantifying ground water recharge is essential in understanding water availability, but the task is difficult because recharge rates are highly variable in space and time. This session will explore the latest methods and studies to estimate ground water recharge, at scales ranging from site to regional, and in hydrologic environments ranging from arid to humid.
Moderators:Geoffrey Delin, US Geological Survey
Stan Leake, U. S. Geological Survey
10:00 a.m.New Data on Predevelopment Recharge of the Rio Grande Aquifer: Rural Area, El Paso County, Texas
Barry Hibbs, Ph.D., California State University, Los Angeles
10:20 a.m.Estimating Recharge in New Mexico Water Planning Regions
Amy C. Lewis, PG, Consulting Hydrologist and Joanne Hilton, PG, Daniel B. Stephens & Associates Inc.
10:40 a.m.Estimation of Spatially Varying Recharge for a Regional Scale Ground Water Model in the Texas Gulf Coast
Neil Deeds, Ph.D.1, Trevor Budge2, Van Kelley1, Steven C. Young3, Geoffrey P. Saunders4 and John Waugh5, (1)INTERA, (2)URS Corporation, (3)URS Corp., (4)Lower Colorado River Authority, (5)San Antonio Water System
11:00 a.m.Identification of Additional Recharge During High Flow Events, Edwards Aquifer, Uvalde County, Texas
Allan Standen, Daniel B. Stephens & Associates Inc.
11:20 a.m.Comparison of Techniques for Estimating Areal Recharge, Spokane Valley-Rathdrum Prairie Aquifer, Idaho, and Washington
James R. Bartolino, Ph.D., U.S. Geological Survey
11:40 a.m.Evaluation of Ground Water Recharge in an Urbanizing, Glacial/Bedrock Aquifer Setting, Illinois by Field, GIS, and Modeling Methods
Colin J. Booth, PhD, PG, Samuel P. Gillet, Alka Singhal and Christopher B. Greer, Northern Illinois University
12:00 p.m.Lunch with the Exhibitors
1:30 p.m.Estimating Recharge for a Ground Water Model using Process-Based Watershed Models
D. Matthew Ely, John J. Vaccaro and Theresa D. Olsen, U.S. Geological Survey
1:50 p.m.Assessing Hydrogeologic Budget Components of a Small Watershed through Stream, Aquifer and Quarry Discharge Monitoring
Matthew S. Weikel, M.S., Louis F. Vittorio Jr., M.S., P.G. and William Y. Potter, P.G., EarthRes Group Inc.
2:10 p.m.Estimating Variations in Recharge by Analyses of Continuous Water-Level Differentials between the Surficial and Floridan Aquifer Systems in East-Central Florida
Louis C. Murray Jr., PhD, PE, U.S. Geological Survey
2:30 p.m.The Role of Recharge in the Occurrence of Volatile Organic Compounds in Ground Water at a National Scale
Michael J. Moran, U.S. Geological Survey

The 2007 Ground Water Summit