Transboundary Aquifer Assessment Program (TAAP)

U.S. Geological Survey

Oklahoma-Texas Water Science Center

Jeremy McDowell
(817) 404-7317
jmcdowell@usgs.gov

Jennifer Villa
(512) 927-3543
jennifervilla@usgs.gov

Arizona Water Science Center

Libby Wildermuth
(520) 279-4557
lwildermuth@usgs.gov

New Mexico Water Science Center

Andre Ritchie
(505) 830-7988
abritchie@usgs.gov

Stephanie Roussel
(505) 830-7924
sroussel@usgs.gov

International Boundary and Water Commission

​Gilbert Anaya
United States Section
(915) 832-4702
gilbert.anaya@ibwc.gov

University of Arizona Water Resources Research Center

San Pedro and Santa Cruz Aquifers

Sharon B. Megdal, Ph.D.
(520) 621-9591
smegdal@email.arizona.edu

New Mexico Water Resources Research Institute

Mesilla Conejos-Medanos Aquifer

Sam Fernald, Ph.D.
(575) 646-4337
afernald@ad.nmsu.edu

Texas Water Resources Institute

Hueco Bolson Aquifer

Rosario Sanchez, Ph. D.
(979) 314-2928
rosario@tamu.edu