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Science in Your Watershed
GIS Software:
The following links take you to sources for no-cost geographic information
and data viewers:
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ArcExplorer -
A Windows 95-based data viewer that supports Shapefile vector and a
variety of raster data (image) formats.
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BASIN 4.0 -
Better Assessment Science Integrating Point and Nonpoint Sources -
BASINS is a multi-purpose environmental analysis system that integrates
GIS, national watershed data, and environmental assessment and modeling tools into one
package.
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DEM Viewer, DLG Viewer and
DEM3D Viewer - Enhanced Windows 95, NT, and 2000-based viewer for
USGS digital elevation model (DEM) data, Digital Line Graph data (DLG)
and Digital Elevation Model 3 Dimensional data (DEM3D)
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DLGV32 - Enhanced
Windows -based viewer for USGS digital line graph (DLG) and digital raster
graphic (DRG) data.
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New England SPARROW Data Viewer-
New England SPARROW (SPAtially Referenced Regressions on Watershed Attributes) are statistical
models that provide a regional interpretation of water-quality monitoring data for streams.
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PCI Geomatics - FreeView,
SPANS Observer, Demoware
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LandView III - A Windows-based
viewer for selected Census, EPA, USGS, and NOAA data bases.
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LandView III product
options.
The following links take you to manufacturers of desktop mapping, image
processing, and geographic information systems software:
The following are on-line services that provide maps and information:
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