Links to Supplemental Data

The ArcView and ArcExplorer project files available for download from this site may be supplemented with additional data available from the EPA.

ArcView Users

The Basins software application can be downloaded and installed on a PC that meets the hardware and software requirements (note that ArcView 3.1 or 3.2 must already be installed on your computer to use the Basins software).   Integrating such data on point and non-point sources of pollution with the data collected through the various sampling programs represented in the GCAP inventory addresses one of the main goals of GCAP (i.e. to investigate the extent to which land-based sources of pollutants and other materials are transported through major river systems to offshore shelf environments).

ArcExplorer Users

For those users who do not have ArcView, it is still possible to add Basins data to the ArcExplorer project available on this site.

The steps to accomplishing this are as follows:

1. Download and install the free ArcExplorer application from ESRI,
2. Download the ArcExplorer project files from this site and unzip to a directory on your PC,
3. Download spatial data* from the Basins web site and unzip the contents,
4. Start ArcExplorer and open the project you downloaded in step 2 (gcap.aep),
5. Add desired GIS layers (Theme/Add Theme) from the data you downloaded in step 3.

*The Basins data are arranged by HUC. For the Georgia coast, the relevant HUCs are 03060204 and 03070106.

Most of the spatial data of interest can be found in the 'core' data files.   The 'pcs3' files contain Permit Compliance System data.  The types of data available are described in the Basins User Manual, Section 2.