Hydraulic-test data for selected USGS groundwater investigations
Summary
The U.S. Geological Survey (USGS) conducts controlled field tests to determine hydraulic properties of geologic deposits as part of groundwater investigations in cooperation with Federal, State, County, and local agencies. These hydraulic tests typically are made by (1) measuring water-level displacements in response to a known hydraulic stress such as a pumping well or downhole slug, (2) calculating the expected response by varying the hydraulic properties in an applicable analytical or numerical solution, (3) comparing the measured response with the calculated response, and (4) adopting those hydraulic properties assumed in the calculated response that best match the measured response (Stallman, 1971). Hydraulic-test results including [...]
Summary
The U.S. Geological Survey (USGS) conducts controlled field tests to determine hydraulic properties of geologic deposits as part of groundwater investigations in cooperation with Federal, State, County, and local agencies. These hydraulic tests typically are made by (1) measuring water-level displacements in response to a known hydraulic stress such as a pumping well or downhole slug, (2) calculating the expected response by varying the hydraulic properties in an applicable analytical or numerical solution, (3) comparing the measured response with the calculated response, and (4) adopting those hydraulic properties assumed in the calculated response that best match the measured response (Stallman, 1971).
Hydraulic-test results including estimated hydraulic properties and selected supportive data are stored in the USGS National Water Information System (NWIS) (https://waterdata.usgs.gov/nwis). This ScienceBase page provides links to the supporting interpretive reports for these hydraulic tests where the data are all stored in the NWIS.
However, much of the supportive data and the analytical or numerical solution match are not conducive to being stored in the NWIS. To make the information not stored in the NWIS available to the public, the USGS has published hydraulic-test data releases through ScienceBase. This ScienceBase page provides links to those data releases. The data releases present water-level displacement and hydraulic-stress data and analytical or numerical solution match for hydraulic tests from USGS groundwater investigations. The data releases also provide links to the associated interpretative reports that document the hydraulic-test data collection and analysis methods.
The web-based Aquifer Test Locator tool (https://ny.water.usgs.gov/maps/aq-test/) provides a graphical user interface to retrieve hydraulic-test information from the NWIS and the ScienceBase data releases.
Reference
Stallman, R.W., 1971, Aquifer-Test Design, Observation, and Data Analysis: U.S. Geological Survey Techniques of Water-Resources Investigations, book 3, chap. B1, 31 p.
https://pubs.usgs.gov/twri/twri3-b1/pdf/twri_3-B1_a.pdf
Stallman, R.W., 1971, Aquifer-Test Design, Observation, and Data Analysis: U.S. Geological Survey Techniques of Water-Resources Investigations, book 3, chap. B1, 31 p.
