GIS – It’s In Everything We Do



Geographic Information Systems (GIS) is the general term for software used to visualize and analyze any spatially-distributed features or conditions.  These can include water supply networks, weather patterns, flood risk, demographics, stormwater or sanitary sewer infrastructure, land use, and many other natural or man-made elements.  CEI provides wide-ranging GIS services to our clients in support of environmental programs, municipal asset management, and civil and geotechnical engineering projects.

CEI uses ESRI’s suite of ArcGIS software in all aspects of its work.  GIS services provided by CEI include high-resolution field mapping and interpretation of spatial data, development and maintenance of geodatabases, and production of high-impact maps using 2D and 3D data and imagery.  The GIS data layers we produce are compatible with AutoCAD, Google Earth, GeoHECRAS, and most other GIS packages.  Further, some of CEI’s engineers are also fully licensed sUAS (drone) pilots, enabling us to conduct field data collection on the ground or via drone.  (Visit CEI’s EagleEye Aerobotics page for more information about our sUAS services.) In this way we can collect high-resolution survey data of sensitive wetlands or other areas which cannot be visited on foot.  

            Figure 1: Vegetation Mapping via sUAS


  • Watershed characterization and vegetation mapping
  • Wildlife habitat assessment and  modeling
  • Invasive species identification and management
  • Mapping and preservation of historical sites
  • Natural resource planning and environmental data management
  • Water quality data analysis and TMDL analysis


  • Maps for permitting, design, and prioritization of public works projects
  • 2D and 3D mapping support for hazardous waste containment and cleanup
  • GIS support for evaluation of potential public water supplies
  • Evaluate site suitability for solar installation
  • Developing tree canopy stormwater BMPs
  • Estimate change in impervious area with development



      Figure 2: Contaminated Soils Reclamation Site 


            Figure 3: Potential for Solar Installation



Asset management:

  • Mapping water distribution, stormwater, or sanitary sewer systems
  • Mapping assistance with MS4 permit compliance
  • Groundwater monitoring
  • Natural hazard mitigation planning
  • Climate trend mapping and climate resilience planning
  • Evaluate fire risk to buildings near public forest

               Figure 4: Sanitary Sewer System

Contact us today to see how we can help you collect and manage your geospatial data and communicate it effectively to your stakeholders and the public! For additional GIS inquiries please contact Josephine Hatton at