Categories Data Creation Data Normalization Georeferencing & Orthorectification Natural Resources Scanning State and Local Government Colorado Geological Survey | Colorado Geologic Hazard Map Conversion Post author By Digital Data Services Post date 2001-12-02 No Comments on Colorado Geological Survey | Colorado Geologic Hazard Map Conversion In 2001, DDS converted original hard-copy geologic hazard maps into fully-attributed ESRI GIS coverage files. Tags Dave Carter, James Freeman