Summary of Groundwater Toolbox


ABSTRACT

The Groundwater (GW) Toolbox is a graphical and mapping interface for analysis
of hydrologic data. The software is a customized interface built on the non-
proprietary, open-source MapWindow geographic information system software in a
Microsoft Windows computing environment. The Groundwater Toolbox allows for 
the retrieval of hydrologic time-series data (streamflow, groundwater levels, 
and precipitation) from the USGS National Water Information System; pre-
processed meteorological data from the National Oceanic and Atmospheric 
Administration National Climatic Data Center also are available with the 
Groundwater Toolbox.

The Groundwater Toolbox has several methods for the analysis of streamflow-
hydrograph data. These methods include (1) six hydrograph-separation 
techniques--the Base-Flow Index (BFI Standard and Modified), HYSEP (Fixed 
Interval, Sliding Interval, and Local Minimum), and PART methods; (2) two
digital techniques--the SWAT Bflow and Eckhardt approaches; and (3) the 
RORA recession-curve displacement method and associated RECESS program to 
estimate groundwater recharge from streamflow data.

With its data retrieval and analysis tools, the Groundwater Toolbox provides 
methods to estimate many of the components of the water budget for a 
hydrologic basin, including precipitation, streamflow, base flow, runoff, 
groundwater recharge, and evapotranspiration.


HISTORY: See file 'release.txt' for a description of the updates made for 
        each new release of the Groundwater Toolbox.

Version 1.3.1; May 26, 2017

Version 1.3; April 15, 2017

Version 1.2;  October 1, 2016

Version 1.1.1;  October 20, 2015

Version 1.1;  April 30, 2015

Version 1.0;  January 9, 2015
        Initial release of software. Build date of software is January 5, 
        2015.


DOCUMENTATION: Also see Tutorials for the Groundwater Toolbox available in
the 'docs' sub-directory of the release.

Barlow, P.M., Cunningham, W.L., Zhai, Tong, and Gray, Mark, 2014, U.S. 
Geological Survey Groundwater Toolbox, a graphical and mapping interface for 
analysis of hydrologic data (version 1.0): User guide for estimation of base 
flow, runoff, and groundwater recharge from streamflow data: U.S. Geological 
Survey Techniques and Methods, book 3, chap. B10, 27 p., http://dx.doi.org/
10.3133/tm3B10.