FLASH-R: Flow-Log Analysis of Single Holes

FLASH-R (Flow-Log Analysis of Single Holes) is a new version of the FLASH spreadsheet tool by Day-Lewis and others (2011) for the analysis of borehole vertical flow logs to estimate fracture (or layer) transmissivities and far-field hydraulic heads. The program is written in R, an open-source environment. All previous features have been retained and new features incorporated including more rigorous parameter estimation, uncertainty analysis, and improved data import. The program has a dynamic user interface compatible with most operating systems.