Geographical Information Systems (GIS)
Here you will find our interactive GIS map designed to address specific topics of interest. Simply click on the link provided (please be patient while it loads), then use the navigation tools to interact with the map. Please note that certain types of data will become visible as you zoom in closer on the map.
GIS Web Map
Information such as land parcels, schools, council districts, utilities can be found on our GIS Web Map. Use the identify tool at the top of the webmap to see elevation and coordinates of GPS monuments and other information about various map features. Benchmark information can be provided in either email or hard copy format upon request.
Flood Protection Information
Review the 2016 Floodplain Community Document (PDF). This is where you can find flood protection information.
Flood Zone Map
The City of Alvin Flood Zone Map (PDF) is a map of the overall city with the FEMA flood zones (Adopted as of December 30, 2020).
Disclaimer: The City provides this information "as is" without warranty of any kind, expressed or implied, and explicitly disclaims any representations and warranties, including, without limitation, the implied warranties of merchantability and fitness for a particular purpose. The City assumes no liability for any errors, omissions or inaccuracies in the data provided regardless of how caused. The City assumes no liability for any decisions made or actions taken or not taken by the user of this data in reliance upon any data furnished hereunder. Users bear sole responsibility for the appropriate use of the information with respect to possible errors in scale, resolution, rectification, positional accuracy, development methodology, time period, environmental and climatic conditions, and other circumstances specific to this data. Use of this data indicates the user's unconditional acceptance of all risks associated with the use of this data.
Please report any errors or problems encountered by emailing the GIS Coordinator.