Table 2. Base data layers included in the Trout Stream GIS database.

Data type

Source

Purpose
30-m Digital elevation model (DEM), Georgia

US Geological Survey

Used to determine elevation and basin area of stream segments





1 : 24 000 hydrography, Georgia

US Geological Survey

Provided stream locations on the landscape and used to determine stream order





1998 Land cover of Georgia (30-m resolution Landsat satellite imagery)

Natural Resource Spatial Analysis Laboratory (NARSAL), Institute of Ecology, University of Georgia

Used to determine percent riparian and catchment forest cover conditions





Georgia Conservation Lands and Georgia Department of Natural Resources

Natural Resource Spatial Analysis Laboratory (NARSAL), Institute of Ecology, University of Georgia

Used to identify trout streams on private vs. public lands





Rules and Regulations for Water Quality Control Chapter 391-3-6, revised August 2000

Georgia Environmental Protection Division

Used with hydrography layer to identify designated trout streams