§ 8.2.3. Watershed Floodplain Models

The City of Austin maintains hydrologic and hydraulic floodplain management models for most of the watersheds within the City of Austin's Full Purpose, Limited Purpose and Extra Territorial Jurisdictions. Where applicable, these City of Austin regulatory models should be used as base models for the impact analyses and drainage design associated with development. Users of these models should be aware that the floodplain models provided have been developed on a watershed-wide basis and may therefore not be applicable without modification on a site-by-site basis. A licensed engineer in the State of Texas must certify any results based on these models or modified versions thereof that are submitted to the City as part of the land development review and permit approval process. The City also maintains copies of the FEMA regulatory models. However, since the City has obtained these models directly through the consultants who developed them, there may be changes which have been approved by FEMA that are not incorporated into the models that the City has on file. Only FEMA can provide the official regulatory models used for flood insurance purposes. All models maintained by the City may be obtained, free of charge, through the FloodPro application at the following location: www.austintexas.gov/floodpro. Model requests, comments, concerns and questions also may be sent to the City's Floodplain Office via email at [e-mail].