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Diana Pedraza


Contact Info

Short Biography

B.S. in Geography (Minor in Anthropology), Texas State University, San Marcos, Texas, December 2003
B.S. in Geology (Minor in Environmental Studies), St. Mary's University, San Antonio, Texas, May 1999

Current Position

Geographer-Data and Spatial Studies Section of the USGS Texas Water Science Center, June 2000-Present


Diana Pedraza is a Geographer for the Texas Water Science Center who specializes in Geographic Information Systems (GIS). Her involvement and contributions to the Texas Water Science Center have ranged from developing a GIS groundwater contamination vulnerability model in ModelBuilder to creating raster datasets depicting interpolated hydrogeologic formation surfaces of top, thickness, and net sands for investigative projects such as the Webb County hydrogeology project and the geologic assessment of the Edwards aquifer in Northern Medina County. She has also assisted the local groundwater modeler with compiling, integrating, and generating GIS spatial hydrologic and geologic structural feature datasets needed for the regional groundwater model of the Edwards aquifer. Equally important among the investigative projects in the center, she has integrated acquired spatial hydrologic data for an ArcHydro Model of the U.S. and Mexico for the Internet Map Service for Environmental Health in the U.S.-Mexico Border Region. In addition, Diana continues to  apply advance GIS techniques for processing data for HSPF modeling projects and hydrogeologic mapping efforts conducted from the local San Antonio South Texas Program office in the Texas Water Science Center.


Lambert, Rebecca B.; Clark, Allan K.; Pedraza, Diana E.; Morris, Robert R., 2014. Hydrogeologic aspects of the Knippa Gap area in eastern Uvalde and western Medina counties, Texas. U.S. Geological Survey Fact Sheet 2014-3045, 6 p. [Link]

Clark, Allan K.; Pedraza, Diana E.; Morris, Robert R.; Garcia, Travis J., 2013. Geodatabase and characteristics of springs within and surrounding the Trinity aquifer outcrops in northern Bexar County, Texas, 2010--11. U.S. Geological Survey Data Series 750, vi, 20 p.; Downloads Directory [Link]

Clark, Allan K.; Pedraza, Diana E.; Morris, Robert R., 2013. Geologic framework, structure, and hydrogeologic characteristics of the Knippa Gap area in eastern Uvalde and western Medina Counties, Texas. U.S. Geological Survey Scientific Investigations Report 2013-5149, Report: viii, 36 p.; Plate: 23.00 inches x 36.00 inches [Link]

Clark, Allan K. and Pedraza, Diana E., 2013, Development of a geodatabase for springs within and surrounding outcrops of the Trinity aquifer in northern Bexar County, Texas, 2010-11. U.S. Geological Survey Fact Sheet 2013-3044, 4 p. [Link]

Pedraza, D.E., and Ockerman, D.J., 2012, Watershed modeling applications in south Texas: U.S. Geological Survey Fact Sheet 2012–3005, 4 p. [Link]

Pedraza, Diana E.; Shah, Sachin D., 2010. Geodatabase design and characteristics of geologic information for a geodatabase of selected wells penetrating the Austin Group in central Bexar County, Texas, 2010. U.S. Geological Survey Data Series 522, vi, 12 p.; Appendices [Link]

Clark, Allan K.; Faith, Jason R.; Blome, Charles D.; Pedraza, Diana E., 2006. Geologic Map of the Edwards Aquifer In Northern Medina and Northeastern Uvalde Counties, South-central Texas. Open-File Report 2006-1372, 22 p.; plate, 36 by 43 inches; data files [Link]

compiled by Blome, Charles D.; Faith, Jason R.; Pedraza, Diana E.; Ozuna, George B.; Cole, James C.; Clark, Allan K.; Small, Ted A.; Morris, Robert R., 2005. Geologic map of the Edwards Aquifer recharge zone, south-central Texas. Scientific Investigations Map 2873, 1 sheet, 55.75 x 39.5 in. [Link]

Blome, Charles D.; Faith, Jason R.; Collins, Edward W.; Pedraza, Diana E.; Murray, Kyle E., 2005. Geologic map compilation of the Upper Seco Creek Area, Medina and Uvalde Counties, south-central Texas. Open-File Report 2004-1430, 21 p.; 1 map [Link]


My Science Topics

Science Topic
Water Resourcesaquifers
Water Resourcesdrainage basins
Water Resourcesground water
Water Resourcesmovement and recharge
Natural Resourceswater resources
Geographic Analysis and Mappingcartography
Geographic Analysis and Mappinggeospatial analysis
Geographic Analysis and Mappingmaps and atlases
Geographic Analysis and Mappingspatial analysis
Geographic Analysis and Mappingtopography
Environmental Issuesabandoned mines and quarries
Environmental Issuesground-water quality
Information Technologydata management
Information Technologydata preservation
Techniques and Methodsgeographic information systems (GIS)
Techniques and Methodsstatistical analysis
Geographic Analysis and Mappingremote sensing

My USGS Science Strategy Areas

Data Integration & Interoperability

Other GIS, Remote Sensing, and Spatial Analysis Activities in Texas

Contact Information

Diana Pedraza
5563 Dezavala Road
San Antonio, TX 78249
210-691-9270 - Fax
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