case studies

Tennessee Department of Environment and Conservation GIS Technical Support



Tennessee Department of Environment and Conservation


GIS Technical Support

In the late 1990’s and early 2000’s, the Tennessee Department of Environment and Conservation (TDEC) began to use GIS more widely within its Divisions to better serve the citizens of Tennessee through improved asset management and decision support. CAESER assisted TDEC for nearly 10 years, helping them to migrate their legacy data into GIS. The TDEC Divisions that CAESER worked with were water supply, water pollution control, Superfund, geology, natural areas, and state parks. With CAESER helping such a large number of Divisions, there was a wide range of GIS services that we provided over a 10-year period, including:,

  • Map all the Natural Areas using survey calls
  • Conduct a quality control on over 100 geologic maps digitized originally by the U.S. Geological Survey
  • Map and categorize by impact severity dam locations
  • Develop source water assessments for all community and non-community water supplies (surface water and groundwater)
  • Map all endangered and rare species through a secure web mapping portal
  • Provide access to the 303(d) impacted streams through a public web mapping portal
  • Train State Park rangers on search and rescue using GPS
  • Map and assign location accuracy to all Superfund sites in Tennessee

These tools are now maintained by TDEC and can be found throughout their websites! Visit the regional Memphis Field Office website covering Shelby, Fayette, and Tipton Counties for the data and maps described above.