Our interactive online map lets you search GIS maps with no special software required. You can easily locate any land parcel, property owner, street, address, or intersection in the county. Roanoke Real Estate GIS Disclaimer As part of a countywide update to the FIRMs (Flood Insurance Rate Maps) for Roanoke County and Incorporated Areas, revised flood mapping has been developed by FEMA for the City of Roanoke.

Understanding the Context

This is part of a periodic process to make sure local flood risk is accurately assessed. GIS is a technology that is used to create, manage, analyze, and map all types of data. GIS connects data to a map, integrating location data (where things are) with all types of descriptive information (what things are like there). Learn how to build maps, analyze data, and share stories using ArcGIS Online.

Key Insights

Use smart mapping to guide the data visualizations in your map. Build web apps to share your maps with anyone, anywhere. Collaboratively build maps and apps. Start answering questions about your data using the spatial analysis tools in ArcGIS Online. GIS stands for Geographic Information Systems.

Final Thoughts

A GIS stores, analyzes, and visualizes data for geographic positions on Earth’s surface. It’s a computer-based tool that examines spatial relationships, patterns, and trends in geography. GIS mapping produces visualizations of geospatial information. What is a geographic information system (GIS)? A Geographic Information System (GIS) is a computer system that analyzes and displays geographically referenced information. It uses data that is attached to a unique location.

Most of the information we have about our world contains a location reference: Where are USGS streamgages located?