At-Risk Reptile & Amphibian Species Across the CA State Highway System

Numbers of High and Very-High Risk Reptile and Amphibian Species ranges that cross the California State Highway System. Numbers of species increases from 10 or less (yellow) to 22 or more (red). California Highway Numbers are in Black.CA EHC lands are those identified by the CDFW California Habitat Connectivity project including smaller natural area parcels greater than or equal to 10 hectares. For more details, see Research to inform Caltrans best management practices for reptile and amphibian road crossings, Chapter 3.