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Texas-Harvey Basemap - Addresses and Boundaries

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Type: Resource
Storage: The size of this resource is 703.5 MB
Created: Nov 02, 2023 at 9:15 p.m.
Last updated: Nov 09, 2023 at 2:04 a.m.
DOI: 10.4211/hs.3e251d7d70884abd928d7023e050cbdc
Citation: See how to cite this resource
Content types: Geographic Feature Content 
Sharing Status: Published
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This site provides access to download an ArcGIS geodatabase or shapefiles for the 2017 Texas Address Database, compiled by the Center for Water and the Environment (CWE) at the University of Texas at Austin, with guidance and funding from the Texas Division of Emergency Management (TDEM). These addresses are used by TDEM to help anticipate potential impacts of serious weather and flooding events statewide. This is part of the Texas Water Model (TWM), a project to adapt the NOAA National Water Model [1] for use in Texas public safety. This database was compiled over the period from June 2016 to December 2017. A number of gaps remain (towns and cities missing address points), see Address Database Gaps spreadsheet below [4]. Additional datasets include administrative boundaries for Texas counties (including Federal and State disaster-declarations), Councils of Government, and Texas Dept of Public Safety Regions. An Esri ArcGIS Story Map [5] web app provides an interactive map-based portal to explore and access these data layers for download.

The address points in this database include their "height above nearest drainage" (HAND) as attributes in meters and feet. HAND is an elevation model developed through processing by the TauDEM method [2], built on USGS National Elevation Data (NED) with 10m horizontal resolution. The HAND elevation data and 10m NED for the continental United States are available for download from the Texas Advanced Computational Center (TACC) [3].

The complete statewide dataset contains about 9.28 million address points representing a population of about 28 million. The total file size is about 5GB in shapefile format. For better download performance, the shapefile version of this data is divided into 5 regions, based on groupings of major watersheds identified by their hydrologic unit codes (HUC). These are zipped by region, with no zipfile greater than 120mb:
- North Tx: HUC1108-1114 (0.52 million address points)
- DFW-East Tx: HUC1201-1203 (3.06 million address points)
- Houston-SE Tx: HUC1204 (1.84 million address points)
- Central Tx: HUC1205-1210 (2.96 million address points)
- Rio Grande-SW Tx: HUC2111-1309 (2.96 million address points)

Additional state and county boundaries are included (Louisiana, Mississippi, Arkansas), as well as disaster-declaration status.

Compilation notes: The Texas Commission for State Emergency Communications (CSEC) provided the first 3 million address points received, in a single batch representing 213 of Texas' 254 counties. The remaining 41 counties were primarily urban areas comprising about 6.28 million addresses (totaling about 9.28 million addresses statewide). We reached the GIS data providers for these areas (see Contributors list below) through these emergency communications networks: Texas 9-1-1 Alliance, the Texas Emergency GIS Response Team (EGRT), and the Texas GIS 9-1-1 User Group. The address data was typically organized in groupings of counties called Councils of Governments (COG) or Regional Planning Commissions (RPC) or Development Councils (DC). Every county in Texas belongs to a COG, RPC or DC. We reconciled all counties' addresses to a common, very simple schema, and merged into a single geodatabase.

November 2023 updates: In 2019, TNRIS took over maintenance of the Texas Address Database, which is now a StratMap program updated annually [6]. In 2023, TNRIS also changed its name to the Texas Geographic Information Office (TxGIO). The datasets available for download below are not being updated, but are current as of the time of Hurricane Harvey.

[1] NOAA National Water Model []
[2] TauDEM Downloads []
[3] NFIE Continental Flood Inundation Mapping - Data Repository []
[4] Address Database Gaps, Dec 2017 (download spreadsheet below)
[5] Texas Address and Base Layers Story Map []
[6] TNRIS/TxGIO StratMap Address Points data downloads []

Subject Keywords



Coordinate System/Geographic Projection:
WGS 84 EPSG:4326
Coordinate Units:
Decimal degrees
North Latitude
East Longitude
South Latitude
West Longitude


Data Services

The following web services are available for data contained in this resource. Geospatial Feature and Raster data are made available via Open Geospatial Consortium Web Services. The provided links can be copied and pasted into GIS software to access these data. Multidimensional NetCDF data are made available via a THREDDS Data Server using remote data access protocols such as OPeNDAP. Other data services may be made available in the future to support additional data types.

Related Resources

The content of this resource references Texas Address and Base Layers Story Map []
This resource updates and replaces a previous version Arctur, D., D. Maidment (2018). Texas-Harvey Basemap - Addresses and Boundaries, HydroShare,
This resource belongs to the following collections:
Title Owners Sharing Status My Permission
Harvey Basemap Data Collections David Arctur · Harvey datamgr · Christine Thies  Published Open Access


Funding Agencies

This resource was created using funding from the following sources:
Agency Name Award Title Award Number
US Federal Emergency Management Administration (FEMA)
Texas Division of Emergency Management (TDEM)
National Science Foundation (NSF) RAPID: Archiving and Enabling Community Access to Data from Recent US Hurricanes 1761673


People or Organizations that contributed technically, materially, financially, or provided general support for the creation of the resource's content but are not considered authors.

Name Organization Address Phone Author Identifiers
Data Quality Manager Monica Watt Texas Commission for State Emergency Communications (CSEC) Austin, TX
Program Manager Vonda Payne Texas Commission for State Emergency Communications (CSEC) Austin, TX
Technical Program Manager Donna Kaniowski West Corporation San Antonio, TX
CEO James D. Goerke Texas 9-1-1 Alliance Austin, TX
President Doug Forsythe Texas Municipal Emergency Communications Districts Association (MECDA) Austin, TX
Director David Allen Texas Emergency GIS Response Team (Texas EGRT) Euless, TX
Senior Research Fellow Harold R. Evans University of Texas at Austin Austin, TX
Xing Zheng University of Texas at Austin Austin, TX
9-1-1 GIS Analyst Jennifer Lopez South Texas Development Council (STDC) Laredo, TX
9-1-1 GIS Supervisor Rodger Mann North Central Texas Council of Governments (NCTCOG) Arlington, TX
GIS Program Manager Craig Eissler Capitol Area Council of Governments (CAPCOG) Austin, TX
Mapping Solutions Lead Miguel Pavon Texas Natural Resources Information System (TNRIS) Austin, TX
GIS Project Manager Jessica Beierman Geo-Comm, Inc. St. Cloud, MN
GIS Director Bob Long Bexar Metro 9-1-1 Network District San Antonio, TX
GIS Manager Rosa Rodriguez Midland County 9-1-1 District Midland, TX
Executive Director Jeffrey Hill Austin County Emergency Communications District (ACECD) Bellville, TX
Database Coordinator Norma Nolazco Coastal Bend Council of Governments (CBCOG) 9-1-1 Network Corpus Christi, TX
9-1-1 Addressing Coordinator John Streeb Nacogdoches County Nacogdoches, TX
ECD Director Patrick Corley Brazos County Emergency Communications District (BCECD) Brazos County, TX
Executive Director E911 Raquel Morales Calhoun County E911 Calhoun County, TX
GIS Coordinator Alfonso Garrido Cameron County Department of Transportation San Benito, TX
Planning & Research Manager Christine Thies Austin Fire Department Austin, TX
GIS Supervisor Vanessa Feagins Denton County 9-1-1 District Denton, TX
Director Mary Kozak El Paso County 9-1-1 District El Paso, TX
GIS Manager Thelma Marron El Paso County 9-1-1 District El Paso, TX
GIS Coordinator Jack Wilkins Galveston County 9-1-1 District Galveston, TX
Director Lavergne Schwender Greater Harris County 9-1-1 District Houston, TX
Director Pam Allen Texas Eastern 9-1-1 District Henderson, TX
GIS Manager Pat Ebel Henderson County 9-1-1 District Athens, TX
Tommy Sullivan Howard County 9-1-1 District Big Spring, TX
Executive Director Mark Del Toro Kerr County 9-1-1 District Kerrville, TX
GIS Addressing Coordinator Brad Patrick Lubbock County 9-1-1 District Lubbock, TX
ECD Director Jesse Harrison McLennan County 9-1-1 District McLennan County, TX
State Dams Data Authority Warren Samuelson Texas Commission for Environmental Quality (TCEQ) Austin, TX
Database Coordinator Regina Payne Montgomery County 9-1-1 District Montgomery County, TX
GIS Coordinator Rey Campos Potter-Randall Counties 9-1-1 District Amarillo, TX
ECD Director Bill Morales Smith County 9-1-1 District Smith County, TX
9-1-1 Coordinator Phillip Rohrbough Tarrant County 9-1-1 District Fort Worth, TX
City GIS Administrator Ed Boyle Taylor County 9-1-1 District Abilene, TX
GIS Analyst Barbara Cowart Wichita-Wilbarger Counties 9-1-1 District Wichita Falls, TX
Joseph Munyao Esri Professional Services Redlands, CA
9-1-1 GIS Coordinator Donna Burger Golden Crescent Regional Planning Commission (GCRPC)
HS Manager Stephen Tice Middle Rio Grande Development Council 9-1-1
GIS Manager Eddie Guerra Middle Rio Grande Development Council 9-1-1
GIS Coordinator James Moore Southeast Texas Regional Planning Commission (SETRPC) 9-1-1 Emergency Network Beaumont, TX
Bridge Management Engineering Tom Yarbrough Texas Department of Transportation (TXDOT) Austin, TX
Matt Ables KISTERS North America, Inc. Citrus Heights, CA

How to Cite

Arctur, D., D. Maidment (2023). Texas-Harvey Basemap - Addresses and Boundaries, HydroShare,

This resource is shared under the Creative Commons Attribution CC BY,

The Consortium of Universities for the Advancement of Hydrologic Science Inc (CUAHSI) and the University of Texas (UT) shall not be held liable for improper or incorrect use of the data described or information contained on this map or associated series of maps. The data and related map graphics are not legal, land survey or engineering documents and are not intended to be used as such.

CUAHSI and UT give no warranty, express or implied, as to the accuracy, reliability, utility or completeness of this information. The user of these maps and data assumes all responsibility and risk for the use of the maps and data. CUAHSI and UT disclaim all warranties, representations or endorsements either express or implied, with regard to the information contained in this map product, including, but not limited to, all implied warranties of merchantability, fitness for a particular purpose or non-infringement.

This preliminary map product is for research and review purposes only. It is not intended to be used for emergency management operational or life safety decisions at the local or regional governmental level or by the general public. Users requiring information regarding hazardous conditions or meteorological conditions for specific geographic areas should consult directly with their city or county emergency management office.


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