Ilana Casarez
Hydrologist at Oklahoma - Texas Water Science Center
Science and Products
A dataset of scanned historical well and geophysical logs from 229 counties in Texas, 1918–2020 (ver. 2.1, September 2025) A dataset of scanned historical well and geophysical logs from 229 counties in Texas, 1918–2020 (ver. 2.1, September 2025)
This data release preserves an extensive archive of 15,475 historical (1918–2020) geophysical logs from wells across Texas, including over 10,000 collected during various studies and more than 2,000 donated records. The original hard-copy logs are housed at the U.S. Geological Survey Oklahoma-Texas Water Science Center (OTWSC) in Austin, Texas. Digitized materials are provided as zipped...
Self-potential, electrical resistivity tomography, and water temperature and electrical conductivity data pertaining to the sources of groundwater at Krause Springs, Spicewood, Texas, February 4–15, 2019 Self-potential, electrical resistivity tomography, and water temperature and electrical conductivity data pertaining to the sources of groundwater at Krause Springs, Spicewood, Texas, February 4–15, 2019
This data release contains self-potential (SP), electrical resistivity tomography (ERT), and water temperature and conductivity data measured during a geophysical survey at the Krause Springs property in Spicewood, Texas. The geophysical survey was completed February 4–15, 2019, over approximately 3.1 acres on the western side of the property adjacent to the main visitor parking lot and...
Hydrogeologic Data for the Development of the Hydrogeologic Framework of the Coastal Lowlands Aquifer System Regional Groundwater Availability Study Area in Texas, Louisiana, Mississippi, Alabama, and Florida Hydrogeologic Data for the Development of the Hydrogeologic Framework of the Coastal Lowlands Aquifer System Regional Groundwater Availability Study Area in Texas, Louisiana, Mississippi, Alabama, and Florida
The U.S. Geological Survey (USGS) undertook a 5-year study beginning in 2016 to assess groundwater availability for the aquifers proximal to the Gulf of Mexico from the Texas-Mexico border to the western part of the panhandle of Florida; these aquifers are collectively referred to as the coastal lowlands aquifer system. This study is one of several regional groundwater availability...
Hydrogeologic Data for the Development of the Hydrogeologic Framework of the Coastal Lowlands Aquifer System Regional Groundwater Availability Study Area in Texas, Louisiana, Mississippi, Alabama, and Florida Hydrogeologic Data for the Development of the Hydrogeologic Framework of the Coastal Lowlands Aquifer System Regional Groundwater Availability Study Area in Texas, Louisiana, Mississippi, Alabama, and Florida
The U.S. Geological Survey (USGS) undertook a 5-year study beginning in 2016 to assess groundwater availability for the aquifers proximal to the Gulf of Mexico from the Texas-Mexico border to the western part of the panhandle of Florida; these aquifers are collectively referred to as the coastal lowlands aquifer system. This study is one of several regional groundwater availability...
Aquifer extents in the coastal lowlands aquifer system regional groundwater availability study area in Texas, Louisiana, Mississippi, Alabama, and Florida, 2020 Aquifer extents in the coastal lowlands aquifer system regional groundwater availability study area in Texas, Louisiana, Mississippi, Alabama, and Florida, 2020
The U.S. Geological Survey (USGS) undertook a 5-year study beginning in 2016 to assess groundwater availability for the aquifers proximal to the Gulf of Mexico from the Texas-Mexico border to the western part of the panhandle of Florida; these aquifers are collectively referred to as the coastal lowlands aquifer system. This study is one of several regional groundwater availability...
Assessing the state of water resource knowledge and tools for future planning in the lower Rio Grande-Rio Bravo Basin Assessing the state of water resource knowledge and tools for future planning in the lower Rio Grande-Rio Bravo Basin
The Rio Grande/Rio Bravo Basin (hereinafter referred to as the Rio Grande) is a transboundary basin, with the Rio Grande forming the border between the United States and Mexico for approximately 2,034 km. The waters of the Rio Grande serve as a critical drinking source for 13 million people, connecting numerous population centers representing diverse backgrounds and cultures along its...
Authors
Ilana Renae Casarez, Samuel Sandoval-Solis, Jose P. Ortiz-Partida
Improving predictions of water supply in the Rio Grande under changing climate conditions Improving predictions of water supply in the Rio Grande under changing climate conditions
This product is a case study summarizing the original work authored by David Gutzler, Shaleene Chavarria, and Nels Bjarke. The content will be part of a collection of Case Studies shared via the Collaborative Conservation and Adaptation Strategy Toolbox (CCAST). The research featured in this case study is an analysis of historical observations and climate models developed by the US...
Authors
Ilana Renae Casarez
Science and Products
A dataset of scanned historical well and geophysical logs from 229 counties in Texas, 1918–2020 (ver. 2.1, September 2025) A dataset of scanned historical well and geophysical logs from 229 counties in Texas, 1918–2020 (ver. 2.1, September 2025)
This data release preserves an extensive archive of 15,475 historical (1918–2020) geophysical logs from wells across Texas, including over 10,000 collected during various studies and more than 2,000 donated records. The original hard-copy logs are housed at the U.S. Geological Survey Oklahoma-Texas Water Science Center (OTWSC) in Austin, Texas. Digitized materials are provided as zipped...
Self-potential, electrical resistivity tomography, and water temperature and electrical conductivity data pertaining to the sources of groundwater at Krause Springs, Spicewood, Texas, February 4–15, 2019 Self-potential, electrical resistivity tomography, and water temperature and electrical conductivity data pertaining to the sources of groundwater at Krause Springs, Spicewood, Texas, February 4–15, 2019
This data release contains self-potential (SP), electrical resistivity tomography (ERT), and water temperature and conductivity data measured during a geophysical survey at the Krause Springs property in Spicewood, Texas. The geophysical survey was completed February 4–15, 2019, over approximately 3.1 acres on the western side of the property adjacent to the main visitor parking lot and...
Hydrogeologic Data for the Development of the Hydrogeologic Framework of the Coastal Lowlands Aquifer System Regional Groundwater Availability Study Area in Texas, Louisiana, Mississippi, Alabama, and Florida Hydrogeologic Data for the Development of the Hydrogeologic Framework of the Coastal Lowlands Aquifer System Regional Groundwater Availability Study Area in Texas, Louisiana, Mississippi, Alabama, and Florida
The U.S. Geological Survey (USGS) undertook a 5-year study beginning in 2016 to assess groundwater availability for the aquifers proximal to the Gulf of Mexico from the Texas-Mexico border to the western part of the panhandle of Florida; these aquifers are collectively referred to as the coastal lowlands aquifer system. This study is one of several regional groundwater availability...
Hydrogeologic Data for the Development of the Hydrogeologic Framework of the Coastal Lowlands Aquifer System Regional Groundwater Availability Study Area in Texas, Louisiana, Mississippi, Alabama, and Florida Hydrogeologic Data for the Development of the Hydrogeologic Framework of the Coastal Lowlands Aquifer System Regional Groundwater Availability Study Area in Texas, Louisiana, Mississippi, Alabama, and Florida
The U.S. Geological Survey (USGS) undertook a 5-year study beginning in 2016 to assess groundwater availability for the aquifers proximal to the Gulf of Mexico from the Texas-Mexico border to the western part of the panhandle of Florida; these aquifers are collectively referred to as the coastal lowlands aquifer system. This study is one of several regional groundwater availability...
Aquifer extents in the coastal lowlands aquifer system regional groundwater availability study area in Texas, Louisiana, Mississippi, Alabama, and Florida, 2020 Aquifer extents in the coastal lowlands aquifer system regional groundwater availability study area in Texas, Louisiana, Mississippi, Alabama, and Florida, 2020
The U.S. Geological Survey (USGS) undertook a 5-year study beginning in 2016 to assess groundwater availability for the aquifers proximal to the Gulf of Mexico from the Texas-Mexico border to the western part of the panhandle of Florida; these aquifers are collectively referred to as the coastal lowlands aquifer system. This study is one of several regional groundwater availability...
Assessing the state of water resource knowledge and tools for future planning in the lower Rio Grande-Rio Bravo Basin Assessing the state of water resource knowledge and tools for future planning in the lower Rio Grande-Rio Bravo Basin
The Rio Grande/Rio Bravo Basin (hereinafter referred to as the Rio Grande) is a transboundary basin, with the Rio Grande forming the border between the United States and Mexico for approximately 2,034 km. The waters of the Rio Grande serve as a critical drinking source for 13 million people, connecting numerous population centers representing diverse backgrounds and cultures along its...
Authors
Ilana Renae Casarez, Samuel Sandoval-Solis, Jose P. Ortiz-Partida
Improving predictions of water supply in the Rio Grande under changing climate conditions Improving predictions of water supply in the Rio Grande under changing climate conditions
This product is a case study summarizing the original work authored by David Gutzler, Shaleene Chavarria, and Nels Bjarke. The content will be part of a collection of Case Studies shared via the Collaborative Conservation and Adaptation Strategy Toolbox (CCAST). The research featured in this case study is an analysis of historical observations and climate models developed by the US...
Authors
Ilana Renae Casarez