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The Harris County Flood Control District recently launched a new tool to help Harris County residents gain knowledge about floodplains and
their flooding risks—the Flood Education Mapping Tool at   The mapping tool replaces the mapping tool formerly found on the
Tropical Storm Allison Recovery Project (TSARP) website.

The Flood Education Mapping Tool builds on the interactive mapping tool created through TSARP, a multi-year, joint initiative spearheaded
by the Federal Emergency Management Agency (FEMA) and the Flood Control District in the aftermath of Tropical Storm Allison in 2001.  TSARP produced a new Flood Insurance Rate Map (FIRM or floodplain map) that was adopted by Harris County, the city of Houston and the county’s 33 municipalities in 2007.

New Mapping Tool Has User-Friendly Features

Since TSARP, Harris County real estate professionals and property owners have used the mapping tool on the TSARP website as an
educational source to learn the location of structures relative to the mapped 1 percent (100-year), 0.2 percent (500-year) and coastal floodplains.

“Having recently marked the 10-year anniversary of Tropical Storm Allison, the Flood Control District is launching a mapping tool with an
updated look and new features,” said Heather Saucier, Flood Control District spokeswoman.  “Having served a valuable
purpose for nearly a decade, the TSARP website has been retired with the launch of the Flood Education Mapping Tool.”

Some of the prominent new features of the Flood Education Mapping Tool include:

  • Regular updates to mapped floodplains in Harris
    County as they are revised by FEMA
  • An interactive legend with pop-up “tool tips”
    that help users get the most out of each legend item
  • Easy map navigation
  • Known pending areas where stormwater typically
    collects when rainfall exceeds the capacity of a street’s drainage system or
    the land’s ability to drain.

The Flood Education Mapping Tool features a glossary and frequently-asked questions that address topics about flooding risks, floodplains and flood insurance.  It also contains updated information about TSARP.

While the floodplains shown on the new mapping tool are the floodplains delineated on the FEMA effective FIRM for Harris County, the mapping tool is not the effective FIRM.
Residents are urged to visit FEMA’s Map Service Center at to view the effective FIRM, and to contact an insurance agent or mortgage lender for an official floodplain

Introducing the Floodplain Information Line

Complementary to this effort to provide the public with tools to better understand flooding risks, the Flood Control District also
recently introduced the Floodplain Information Line at 713-684-4150.

The Floodplain Information Line provides answers in English and in Spanish to frequently asked questions about topics including:

  • General floodplain information
  • How to obtain an official FIRM
  • How to obtain an official floodplain
    determination from official sources, such as mortgage lenders and insurance
    agents (floodplain determinations are not made by FEMA, the Flood Control
    District or by local floodplain administrators)
  • Information on flood insurance and elevation

This is a reprint of an Article in the October 2011 Houston Realtor® Magazine.

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