Short-term aquifer tests were conducted to estimate hydraulic properties in an alluvial aquifer. Tests included eight single-hole pumping and recovery tests and three slug tests (in a single well). These investigations were conducted in the Wet Mountain Valley, in Custer and Fremont Counties, Colorado. The U.S. Geological Survey (USGS) conducted aquifer tests in May, 2019. These aquifer tests inform the conceptual understanding of the valley-fill aquifer and serve as primary inputs to the numerical groundwater-flow model. Testing was completed in cooperation with the Upper Arkansas Water Conservancy District. This data release contains raw data from aquifer tests, water-level and pumping discharge rate measurements, well logs, graphs of the testing data, and plots of analytical solutions.

U.S. Geological Survey (USGS) in cooperation with the U.S. Air Force Civil Engineering Center conducted short-term aquifer tests at 11 wells to estimate hydraulic properties in the Fountain Creek alluvial aquifer, in El Paso County, Colorado. Data were collected in July 2019 over three days. Single-hole pumping and recovery tests were completed at five wells, and multiple single-hole displacement (solid slug) tests were conducted at all 11 wells. This data release contains water-level data collected at various time intervals (0.25 seconds, 0.5 seconds, and variable during a manual test with a stopwatch) and well-discharge rates for the aquifer tests in comma separated value (CSV) files for the 34 tests analyzed. All water-level displacement data for a given well are provided in a single CSV file for the well. Data are further categorized by the type of aquifer test used for data collection (slug or pumping). Well logs, graphs of the test data, and plots of analytical solutions are included in file, “FCAA_aquifer_testing_description_plots_vFINAL.pdf.”

U.S. Geological Survey (USGS) in cooperation with the U.S. Air Force Civil Engineering Center conducted short-term aquifer tests at 11 wells to estimate hydraulic properties in the Fountain Creek alluvial aquifer, in El Paso County, Colorado. Data were collected in July 2019 over three days. Single-hole pumping and recovery tests were completed at five wells, and multiple single-hole displacement (solid slug) tests were conducted at all 11 wells. This data release contains water-level data collected at various time intervals (0.25 seconds, 0.5 seconds, and variable during a manual test with a stopwatch) and well-discharge rates for the aquifer tests in comma separated value (CSV) files for the 34 tests analyzed. All water-level displacement data for a given well are provided in a single CSV file for the well. Data are further categorized by the type of aquifer test used for data collection (slug or pumping). Well logs, graphs of the test data, and plots of analytical solutions are included in file, “FCAA_aquifer_testing_description_plots_vFINAL.pdf.”

This dataset presents tabular data and Excel workbooks used to analyze single-well aquifer tests in pumping wells and slug tests in monitoring wells near Long Canyon. The data also include pdf outputs from the analysis program, Aqtesolv (Duffield, 2007). The data are presented in two zipped files, (1) single-well aquifer tests in pumping wells and (2) slug tests in monitoring wells. The slug-test data were supplied by Newmont Mining Corporation and collected by Golder and Associates in 2011. Reference Cited: Duffield, G.M., 2007, AQTESOLV for windows: Version 4.5 User’s Guide, HydroSOLV, Inc. Reston, VA, p. 530, at, http://www.aqtesolv.com/download/aqtw20070719.pdf.

This dataset presents tabular data and Excel workbooks used to analyze single-well aquifer tests in pumping wells and slug tests in monitoring wells near Long Canyon. The data also include pdf outputs from the analysis program, Aqtesolv (Duffield, 2007). The data are presented in two zipped files, (1) single-well aquifer tests in pumping wells and (2) slug tests in monitoring wells. The slug-test data were supplied by Newmont Mining Corporation and collected by Golder and Associates in 2011. Reference Cited: Duffield, G.M., 2007, AQTESOLV for windows: Version 4.5 User’s Guide, HydroSOLV, Inc. Reston, VA, p. 530, at, http://www.aqtesolv.com/download/aqtw20070719.pdf.

To determine aquifer characteristics, pneumatic slug tests were performed on selected zones and aquifers at a monitoring site near the Lost Hills oil field in the Southern San Joaquin Valley in Kern County. On May 30th and 31st, 2018, pneumatic slug tests were performed at five monitoring wells located at the multiple-well groundwater-monitoring site LHSP (26S/21E-07J1 through –J5) near Lost Hills, CA in the Southern San Joaquin Valley. Data were collected using In-Situ LevelTROLL 500 30psig pressure transducers set to record the depth to water level below land surface at one second intervals. Computations were performed using Aqtesolv software and analyzed using the KGS Model package for overdamped slug tests performed in fully and partially penetrating wells in a confined aquifer (Hyder, 1994). Data presented in this data release include well construction information, well development information, observed water levels during the tests, parameters used for analysis, and test results.

To determine aquifer characteristics, pneumatic slug tests were performed on selected zones and aquifers at a monitoring site near the Lost Hills oil field in the Southern San Joaquin Valley in Kern County. On May 30th and 31st, 2018, pneumatic slug tests were performed at five monitoring wells located at the multiple-well groundwater-monitoring site LHSP (26S/21E-07J1 through –J5) near Lost Hills, CA in the Southern San Joaquin Valley. Data were collected using In-Situ LevelTROLL 500 30psig pressure transducers set to record the depth to water level below land surface at one second intervals. Computations were performed using Aqtesolv software and analyzed using the KGS Model package for overdamped slug tests performed in fully and partially penetrating wells in a confined aquifer (Hyder, 1994). Data presented in this data release include well construction information, well development information, observed water levels during the tests, parameters used for analysis, and test results.

To determine aquifer properties in the San Antonio Creek Valley watershed (SACVW) single well air and physical slug aquifer tests were conducted on seventeen monitoring wells at nine sites beginning on August 7 2017 and ending on August 13, 2017 . For all tests either a physical or air slug was used based on the distance of the groundwater level from the perforated interval of the well. A physical slug was used if the distance from the groundwater level to the top of the perforated interval was less than seven feet (ft); otherwise an air slug was used. above the screened interval than a physical slug was used. Physical slug tests were used in order to produce enough change in groundwater levels to adequately characterize the hydraulic conductivity, but without losing air to the aquifer which would significantly affect the outcome and interpretation of the test. Aquifer slug tests were conducted in order to estimate the hydraulic conductivity of aquifer units within the SACVW. The perforation intervals of the 17 monitoring wells in which aquifer slug tests were conducted varied between 45 ft below land surface and 940 ft below land surface providing a range of aquifer zones to study.

To determine aquifer properties in the San Antonio Creek Valley watershed (SACVW) single well air and physical slug aquifer tests were conducted on seventeen monitoring wells at nine sites beginning on August 7 2017 and ending on August 13, 2017 . For all tests either a physical or air slug was used based on the distance of the groundwater level from the perforated interval of the well. A physical slug was used if the distance from the groundwater level to the top of the perforated interval was less than seven feet (ft); otherwise an air slug was used. above the screened interval than a physical slug was used. Physical slug tests were used in order to produce enough change in groundwater levels to adequately characterize the hydraulic conductivity, but without losing air to the aquifer which would significantly affect the outcome and interpretation of the test. Aquifer slug tests were conducted in order to estimate the hydraulic conductivity of aquifer units within the SACVW. The perforation intervals of the 17 monitoring wells in which aquifer slug tests were conducted varied between 45 ft below land surface and 940 ft below land surface providing a range of aquifer zones to study.

To determine aquifer characteristics, pneumatic slug tests were performed on selected zones and aquifers at a monitoring site near the North and South Belridge oil fields in the Southern San Joaquin Valley in Kern County. On November 19th and 20th, 2018, pneumatic slug tests were performed at five monitoring wells located at the multiple-well groundwater-monitoring site BWSD (28S/21E-08M1 through –M5) near Lost Hills, CA in the Southern San Joaquin Valley. Data were collected using In-Situ LevelTROLL 500 30psig pressure transducers set to record the depth to water level below land surface at one second intervals. Computations were performed using Aqtesolv software and analyzed using the KGS Model package for overdamped and Butler-Zhan for underdamped slug tests performed in fully and partially penetrating wells in a confined aquifer (Hyder, 1994). Data presented in this data release include well construction information, well development information, observed water levels during the tests, parameters used for analysis, and test results.