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FLASH-R (Flow-Log Analysis of Single Holes)

January 23, 2020

FLASH-R (Flow-Log Analysis of Single Holes) is an R app for the analysis of borehole vertical flow logs to estimate fracture (or layer) transmissivities and far-field hydraulic heads.
This app is a new version of the FLASH spreadsheet tool by Day-Lewis et al. (2011) . 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.

Suggested Code Citation
Barbosa, M.B., Terry, N., Day-Lewis, F.D., Bertolo, R., and Lane, J.W. Jr. (2020), FLASH-R v1.0: U.S. Geological Survey software release, January 20, 2020,

Publication Year 2020
Title FLASH-R (Flow-Log Analysis of Single Holes)
DOI 10.5066/P9U9V9YU
Authors Marcos Bolognini Barbosa, Neil C Terry, Frederick D Day-Lewis, Reginaldo Bertolo, John W Lane
Product Type Software Release
Record Source USGS Digital Object Identifier Catalog
USGS Organization Water Resources Mission Area - Headquarters