The U.S. Geological Survey, in cooperation with the City of South Padre Island, Texas, collected base line hydrodynamic (tidal water level and current velocity) data for a near-shore area of the Laguna Madre near South Padre Island from August 18, 2021, to April 27, 2022. The data included in this data release are presented in a comma-separated values (csv) file format.

The U.S. Geological Survey (USGS), in cooperation with the City of South Padre Island, Texas, deployed an acoustic Doppler current profiler (ADCP) to collect current velocity, wave height, and directional data in the lower Laguna Madre adjacent to South Padre Island, Texas. From July 19, 2022, through January 9, 2023, these data were collected at a site near South Padre Island (USGS station number 260551097100901) by using an up-looking acoustic doppler current profiler (ADCP) mounted on the bottom of the lower Laguna Madre. Raw data were collected at a frequency of 2 hertz (Hz); reported values were computed as the average of the processed data values for 60-minute intervals. All times are represented in Coordinated Universal Time (UTC).

The U.S. Geological Survey (USGS), in cooperation with the City of South Padre Island, Texas, deployed an acoustic Doppler current profiler (ADCP) to collect current velocity, wave height, and directional data in the lower Laguna Madre adjacent to South Padre Island, Texas. From July 19, 2022, through January 9, 2023, these data were collected at a site near South Padre Island (USGS station number 260551097100901) by using an up-looking acoustic doppler current profiler (ADCP) mounted on the bottom of the lower Laguna Madre. Raw data were collected at a frequency of 2 hertz (Hz); reported values were computed as the average of the processed data values for 60-minute intervals. All times are represented in Coordinated Universal Time (UTC).

The U.S. Geological Survey, in cooperation with the City of South Padre Island, Texas, deployed an Acoustic Doppler Current Profiler (ADCP) to measure surface wave, pressure, and current-velocity data approximated 1-mile (1.61-kilometers) offshore from South Padre Island, Texas during August 2018–February 2019. The data were collected by using a trawl-resistant Teledyne Oceanscience Barnacle53 mounted uplooking ADCP deployed on the seabed. This part of the data release contains the data pertaining to current velocities. Raw observations were collected at 1-minute intervals but are reported as the average values for to 10-minute intervals. All times are represented in Coordinated Universal Time (UTC). The measurements can be used to explore the oceanographic and sediment-transport processes associated with near-shore and beach erosion and deposition patterns.

The U.S. Geological Survey, in cooperation with the City of South Padre Island, Texas, deployed an Acoustic Doppler Current Profiler (ADCP) to measure surface wave, pressure, and current-velocity data approximated 1-mile (1.61-kilometers) offshore from South Padre Island, Texas during August 2018–February 2019. The data were collected by using a trawl-resistant Teledyne Oceanscience Barnacle53 mounted uplooking ADCP deployed on the seabed. This part of the data release contains the data pertaining to current velocities. Raw observations were collected at 1-minute intervals but are reported as the average values for to 10-minute intervals. All times are represented in Coordinated Universal Time (UTC). The measurements can be used to explore the oceanographic and sediment-transport processes associated with near-shore and beach erosion and deposition patterns.

A groundwater level survey and reconnaissance of the hydrologic conditions in the South Coast aquifer in the Santa Isabel area of southern Puerto Rico was conducted during March 31 to April 17, 2014. The field survey included groundwater level measurements at 55 wells and instantaneous streamflow measurements at 15 locations in streams and irrigation canals. A potentiometric surface map of the alluvial aquifer provides an indication of the directions of groundwater flow. The objective of the field survey was to delineate the potentiometric surface of the study area defined as the South Coast aquifer between the Río Descalabrado to the west and the Río Jueyes to the east of the town of Santa Isabel. Instantaneous streamflow measurements were made at selected sites along the Río Coamo, Río Descalabrado, Río Cañas, and the Canal de Juana Díaz to evaluate groundwater and surface-water interactions during the synoptic survey. Potentiometric contours are based on water-level measurements collected at wells during the dry season from March 31 to April 17, 2014. Measured values of the potentiometric surface ranged from -22.80 feet to 185.4 feet above mean sea level. The results of the study indicate a cone of depression in the aquifer near the center of the study area, where the potentiometric surface is below mean sea level.

A groundwater level survey and reconnaissance of the hydrologic conditions in the South Coast aquifer in the Santa Isabel area of southern Puerto Rico was conducted during March 31 to April 17, 2014. The field survey included groundwater level measurements at 55 wells and instantaneous streamflow measurements at 15 locations in streams and irrigation canals. A potentiometric surface map of the alluvial aquifer provides an indication of the directions of groundwater flow. The objective of the field survey was to delineate the potentiometric surface of the study area defined as the South Coast aquifer between the Río Descalabrado to the west and the Río Jueyes to the east of the town of Santa Isabel. Instantaneous streamflow measurements were made at selected sites along the Río Coamo, Río Descalabrado, Río Cañas, and the Canal de Juana Díaz to evaluate groundwater and surface-water interactions during the synoptic survey. Potentiometric contours are based on water-level measurements collected at wells during the dry season from March 31 to April 17, 2014. Measured values of the potentiometric surface ranged from -22.80 feet to 185.4 feet above mean sea level. The results of the study indicate a cone of depression in the aquifer near the center of the study area, where the potentiometric surface is below mean sea level.

The U.S. Geological Survey, in cooperation with the City of South Padre Island, Texas, deployed an Acoustic Doppler Current Profiler (ADCP) to measure surface wave, pressure, and current-velocity data approximated 1-mile (1.61-kilometers) offshore from South Padre Island, Texas during August 2018–February 2019. The data were collected by using a trawl-resistant Teledyne Oceanscience Barnacle53 mounted uplooking ADCP deployed on the seabed. This part of the data release contains the data pertaining to wave velocities. Raw observations were collected at 1-minute intervals but are reported as the average values for to 10-minute intervals. All times are represented in Coordinated Universal Time (UTC). The measurements can be used to explore the oceanographic and sediment-transport processes associated with near-shore and beach erosion and deposition patterns.

The U.S. Geological Survey, in cooperation with the City of South Padre Island, Texas, deployed an Acoustic Doppler Current Profiler (ADCP) to measure surface wave, pressure, and current-velocity data approximated 1-mile (1.61-kilometers) offshore from South Padre Island, Texas during August 2018–February 2019. The data were collected by using a trawl-resistant Teledyne Oceanscience Barnacle53 mounted uplooking ADCP deployed on the seabed. This part of the data release contains the data pertaining to wave velocities. Raw observations were collected at 1-minute intervals but are reported as the average values for to 10-minute intervals. All times are represented in Coordinated Universal Time (UTC). The measurements can be used to explore the oceanographic and sediment-transport processes associated with near-shore and beach erosion and deposition patterns.

The U.S. Geological Survey, in cooperation with the City of South Padre Island, Texas, collected baseline bathymetric data for a near-shore area of the Laguna Madre near South Padre Island in July 2021. Bathymetric survey points were collected using real-time kinematic Global Navigation Satellite System (RTK-GNSS) equipment. The data included in this data release are presented in a comma-separated values (csv) file format.