GroundWater Toolbox1.2

The Groundwater Toolbox allows for the retrieval of hydrologic time-series data (streamflow, groundwater levels, and precipitation) from the USGS National Water Information System; preprocessed 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 six hydrograph-separation techniques — the Base-Flow Index (BFI Standard and Modified), HYSEP (Fixed Interval, Sliding Interval, and Local Minimum), and PART methods — and the RORA recession-curve displacement method and associated RECESS program to estimate groundwater recharge from streamflow data. The program allows running base-flow separation analysis on large number of streamflow datasets in batch mode.

This software is currently being distributed by USGS via the following website: http://water.usgs.gov/ogw/gwtoolbox/