GIS Map Example

Geographic Information Systems

Geographic Information Systems (GIS) is a computer-based mapping tool that TRA uses to analyze and visually present project information and environmental impacts. GIS allows practitioners to picture geographically based data. It is an efficient and powerful tool that allows us to quickly display, understand, query, and interpret data, thereby improving our understanding of a project’s relationship to the environment.

TRA uses ESRI’s ArcGIS software. Our GIS analysts are also biologists, land use planners, and environmental impact analysts who bring their technical knowledge to map-making. Our analysts are well-versed in presenting maps that pack information into a clear and understandable format. TRA frequently develops and manages complex GIS datasets from existing data in the public and private sectors or from project-specific data collected using Global Positioning Systems (GPS), or aerial photo interpretation.

TRA offers a wide range of GIS services in many situations, including:

  • ● Endangered species habitat modeling to inform large scale planning efforts (Click to view map)
  • ● Figure production for a variety of documents (CEQA, biotic reports, rare plant surveys, environmental permits)
  • ● Showing the results of on-the-ground field work for biological resources and integrating detailed spatial data, such as LiDAR.