Introduction
The ultimate source of most geographic data in the United States is the United States Geological Survey (USGS). USGS maintains the GNIS database which can be queried on-line.
Customized Missouri maps can be created at the Center for Agricultural, Resource, and Environmental Services (CARES) map room, OpenStreetMap, and Google Maps. Missouri spatial data can be downloaded gratis from the Missouri Spatial Data Information Service (MSDIS).
There are many sources of consumer-grade mapping products available, from dedicated GPS units, to smartphone applications, or simply the web. GRASS is professional-grade open-source GIS package. QGIS is a user-friendly GIS viewer that integrates tightly with PostGIS, a spatial extension for the open-source database PostgreSQL. Finally, GeoCommunity is an on-line community of GIS, CAD, GPS, and other mapping professionals.
Missouri
- Center for Agricultural, Resource, and Environmental Services (CARES)
- Missouri Department of Conservation
- Missouri Department of Natural Resources
- Missouri Herpetological Association
- Missouri Spatial Data Information Service (MSDIS)
- Missouri State University
- University of Missouri--Columbia
Border states
- Atlas of Amphibians in Tennessee
- Atlas of Reptiles in Tennessee
- Herps of Arkansas
- Illinois Natural History Survey
- Iowa Herpetology (HerpNet)
- Kansas Herpetofaunal Atlas
- Nebraska Herpetofaunal Atlas
- Oklahoma Herpetofaunal Atlas
National and international
- Association for Biodiversity Information
- Center for North American Herpetology
- Ecoregions of North America
- Midwest Partners in Amphibian and Reptile Conservation
- National Amphibian Atlas
- North American Amphibian Monitoring Program
- Partners in Amphibian and Reptile Conservation
- Society for the Study of Amphibians and Reptiles (SSAR)
- SSAR Checklist
- SSAR Database
- USGS Geographic Names Information System