Mayor Vincent C. Gray

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About OCTO


Maps & Apps

Agency Support


Office of the Chief Technology Officer

Office Hours
Monday through Friday, 8:30 am - 5:30 pm

How to Reach Us
200 I Street, SE
5th Floor
Washington, DC 20003

Phone: (202) 727-2277
Fax: (202) 727-6857
TTY: 711

FOIA Information
Agency Performance


DC Digital Inclusion 

Rob Mancini
Chief Technology Officer

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Flood Risk Zone Viewer 

The national Flood Rate Insurance Map (FIRM) is the official map of a community on which the Federal Emergency Management Agency (FEMA) has delineated both the special hazard areas and the risk premium zones applicable to the community.  The District Department of the Environment (DDOE) and OCTO have created this online tool to help District residents, insurance companies and brokers to locate properties and buildings inside flood risk areas.  Additionally, District and local community officials use FIRM to prepare for emergencies and to mitigate damages when floods occur.

To learn more about FIRM, please visit FEMA's web site.


Service Need

Residents and businesses can identify and view 2010 floodplains in the District or by entering their property location.

Service at a Glance

Provided By: DDOE
Phone: (202) 439-5715
Location: 1200 First Street NE Washington, DC 20002

Request this Service

Water in the District of Columbia