Principal Aquifer Coordinator

Wayne Lapham

703-648-5805

wlapham@usgs.gov

Basin and Range alluvial and carbonate-rock aquifers

Sue Thiros

801-908-5063

sthiros@usgs.gov

California Coastal Basin aquifers

Central Valley aquifer system

Rio Grande aquifer system

Biscayne aquifer

Marian Berndt

850-942-9500 x3015

mberndt@usgs.gov

Floridan aquifer system + overlying Coastal Plain surficial

Cambrian-Ordovician aquifer system

Kelly Warner

217-344-0037 x3010

klwarner@usgs.gov

Glacial deposit aquifers

New England crystalline-rock aquifers

Coastal Lowlands aquifer system

Jim Kingsbury

615-837-4762

jakingsb@usgs.gov

Edwards-Trinity aquifer system

Mississippi Embayment-Texas Coastal Uplands aquifer system

Columbia Plateau basin-fill and basaltic rock aquifers

Chip Hunt

808-587-2414

cdhunt@usgs.gov

Hawaiian volcanic rock aquifers

Snake River plain basin-fill and basaltic rock aquifers

Denver basin aquifer system

Suzanne Paschke

303-236-4882 x352

spaschke@usgs.gov

High Plains aquifer system

Pete McMahon

303-236-4882 x286

pmcmahon@usgs.gov

Northern Atlantic Coastal Plain aquifer system

Tracy Hancock

804-261-2631

thancock@usgs.gov

Piedmont and Blue Ridge aquifers

Bruce Lindsey

717-730-6964

blindsey@usgs.gov

Valley and Ridge aquifers