Spreadsheets for the anaylsis of aquifer-test and slug-test data

A number of new spreadsheets have been developed by the U.S. Geological Survey (Halford and Kuniansky 2002) for the analysis of aquifer-test and slug-test data, a common task for hydrogeologists and ground water engineers. The spreadsheets are written in Microsoft Excel version 9.0. The spreadsheets, together with a PDF version of the documentation, can be downloaded for free from the USGS Web site (http://water. usgs.gov/pubs/of/of/ofr021971). Users can open a specific spreadsheet (worksheet) within the Excel file. The key features, advantages, and disadvantages of the spreadsheets are briefly reviewed in this column.