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Data Links
Many
of the links on this page exit the EPA Site.Arizona Regional Image Archive (ARIA) - A resource system for digital image and map data for the Sonoran desert region, including the US Southwest and northern Mexico (includes DOQQ's and DRG's).
The Arizona NBII (National Biological Information Infrastructure) Project - Houses a large selection of biological, political, and other data and information for Arizona.
The Arizona Land Resource Information System (ALRIS) - A geographic information center which supplies digital spatial data at little or no cost. Has GIS images from riparian vegetation to congressional districts for all of Arizona.
Instituto del Medio Ambiente y el Desarrollo Sustentable (IMADES) - Offers a way to contact the Mexican group who monitors the Sonoran section of the San Pedro watershed.
Earth Explorer - This is the updated version of WEBGLIS. Query and order satellite images, aerial photographs, and cartographic products through the U.S. Geological Survey.
The National Map Seamless Data Distribution System - This site provides custom-generated digital products based on user specified geographic extents and user specified datasets. Seamless digital data is available to users in several optional formats for delivery via web downloads or CD media. One of the best download sites available.
USDA/NRCS Geospatial Data Gateway - The Geospatial Data Gateway provides a way to get natural resources or environmental data at anytime, from anywhere, to anyone. The Gateway allows you to choose your area of interest, browse and select data from a catalog, customize the format, and have it downloaded or shipped on CD. Another high quality download site.
Other Helpful Sites
The Aurora Project (Community Watershed Partnerships/San Pedro River, Arizona)
The Nature Conservancy's San Pedro River web site