Collaborators
The following organizations provide support for development of the APEX model and its interfaces.
- Blackland Research and Extension Center
Texas A&M AgriLife
Organizations
- United States National Climatic Data Center
Climatic data may be obtained from this site - PRISM Climatic Mapping Program
Climatic information for complex climatic areas - United States Geological Survey
The main Web site for USGS - United States Geological Survey-Water Division
Stream gage records may be downloaded from this site - USGS National Water Quality Assessment Data Warehouse
Stream water quality records may be downloaded from this site - United States National Soil Survey Center
Soils data may be downloaded from this site
Geographical Information Systems
- ESRI GIS & Mapping Software
Makers of ArcView and Spatial Analyst - GRASS GIS
Supporters of GRASS, a public-domain GIS software