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Data Library

Find more information

Throughout implementation of this multi-year analysis project, the MAAPnext team will produce and develop a variety of data resources to support our county, FEMA, and other interested organizations. The information provided here has been summarized and made available for your review and comment. As additional information and tools are available, this library will be updated to make these accessible to all who may be interested.

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Harris County Flood Education Mapping Tool

The floodplains shown on this mapping tool are those delineated on the FEMA effective Flood Insurance Rate Map (FIRM or floodplain map) for Harris County that was adopted in 2007, as well as updates that have been made through a Letter of Map Revision (LOMR) since 2007. This mapping tool is not an effective FIRM. The effective FIRM is produced, maintained and published by FEMA and not by the Harris County Flood Control District. Please visit FEMA's Map Service Center to view the effective FIRM for Harris County. For an official floodplain determination, please contact an insurance agent or mortgage lender.

FEMA Risk Mapping, Assessment, and Planning

This FEMA resource discusses the national Risk MAP program and what the program can mean to communities. This page is intended for a variety of audiences, including state and community officials; homeowners, renters and business owners; real estate, lending, insurance professionals; engineers, surveyors and architects.

Harris County Flood Warning System

The Harris County Flood Control District’s Flood Warning System (FWS) measures rainfall amounts and monitors water levels in bayous and major streams on a real-time* basis to inform you of dangerous weather conditions.

The system relies on a network of gage stations strategically placed throughout Harris County bayous and their tributaries.

FEMA Flood Map Service Center

Identify your risk according to FEMA’s Flood Map Service Center.Whether you are in a high-risk zone or not, you may need flood insurance because most homeowner’s insurance doesn't cover flood damage. If you live in an area with low or moderate flood risk, you are 5 times more likely to experience flood than a fire in your home over the next 30 years. For many, a National Flood Insurance Program's flood insurance policy could cost less than $400 per year. Call your insurance agent today and protect what you've built.


As part of the MAAPnext Community Awareness and Engagement Program, two advisory groups will be maintained throughout the project.