The U.S. Fish and Wildlife Service maintains the Critical Habitat Mapper, an online service for information regarding Threatened and Endangered Species final Critical Habitat designations across the United States. You can use this service to download information for use in a GIS, or use the mapping functionality to view an area of interest.
Note: For species with surface and subsurface critical habitat units that overlap (i.e. some salamanders and aquatic invertebrates in central Texas) you will need to download the shapefile for the individual species in order to get both surface and subsurface critical habitat units. Due to generalization procedures that are intended to speed viewing on the web, the online mapper and the seamless composite shapefile for the U.S. only display subsurface units. For Austin Blind and Jollyville Plateau salamander critical habitat, you can view both surface and subsurface critical habitat using the Travis / Williamson Karst Zone and Salamander Critical Habitat Mapper below.
Geographic Information System (GIS) Shapefiles for Karst Zones are available for download. Click below and 'Save Target As' to download the desired zip-compressed shapefiles.
A Mapping Application is available for those who do not have software capable of viewing GIS files. The link below provides a web mapper for the Bexar County and Travis / Williamson County karst zones. This mapper includes the Karst Fauna Regions and Critical Habitat as well. (Note that this application works best in Internet Explorer 9 or above, or the latest versions of Chrome, Firefox or Safari.) Please read disclaimer before using this application.
Disclaimer: Use of this data is for planning purposes only and is not a substitute for site specific geological or biological survey data. Although these data and information have been processed successfully on a computer system at the USFWS, no warranty expressed or implied is made regarding the accuracy or utility of the data and information on any other system or for general or scientific purposes, nor shall the act of distribution constitute any such warranty. This disclaimer applies both to individual use of the data, and information, and aggregate use with other data and information. It is also strongly recommended that careful attention be paid to the contents of the metadata file associated with these data and information. The USFWS shall not be held liable for improper or incorrect use of the data and information described and/or contained herein. If you have any questions about how to interpret this data or appropriate uses, please contact our office at 512-490-0057.