26 datasets found
  1. Texas County Boundaries (line)

    • gis-txdot.opendata.arcgis.com
    • geoportal-mpo.opendata.arcgis.com
    Updated Jul 19, 2016
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    Texas Department of Transportation (2016). Texas County Boundaries (line) [Dataset]. https://gis-txdot.opendata.arcgis.com/datasets/texas-county-boundaries-line
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    Dataset updated
    Jul 19, 2016
    Dataset authored and provided by
    Texas Department of Transportationhttp://txdot.gov/
    Area covered
    Description

    This dataset was created by the Transportation Planning and Programming (TPP) Division of the Texas Department of Transportation (TxDOT) for planning and asset inventory purposes, as well as for visualization and general mapping. County boundaries were digitized by TxDOT using USGS quad maps, and converted to line features using the Feature to Line tool. This dataset depicts a generalized coastline.Update Frequency: As NeededSource: Texas General Land OfficeSecurity Level: PublicOwned by TxDOT: FalseRelated LinksData Dictionary PDF [Generated 2025/03/14]

  2. a

    County Boundaries

    • opendata-richardson.opendata.arcgis.com
    • hub.arcgis.com
    • +1more
    Updated Nov 10, 2015
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    City of Richardson, Texas (2015). County Boundaries [Dataset]. https://opendata-richardson.opendata.arcgis.com/datasets/county-boundaries/geoservice
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    Dataset updated
    Nov 10, 2015
    Dataset authored and provided by
    City of Richardson, Texas
    Area covered
    Description

    The geographic extent of a County, this file represents 3 counties (Dallas, Collin, Denton) clipped from a statewide 2010 Census dataset that are in the Tx N. Central 4202 State Plane projection. The TIGER/Line Files are shapefiles and related database files (.dbf) that are an extract of selected geographic and cartographic information from the U.S. Census Bureau's Master Address File / Topologically Integrated Geographic Encoding and Referencing (MAF/TIGER) Database (MTDB). The MTDB represents a seamless national file with no overlaps or gaps between parts, however, each TIGER/Line File is designed to stand alone as an independent data set, or they can be combined to cover the entire nation. The primary legal divisions of most States are termed counties. The 2010 Census boundaries for counties and equivalent entities are as of January 1, 2010, primarily as reported through the Census Bureau's Boundary and Annexation Survey (BAS).Metadata edited 01/2021

  3. d

    Texas-Harvey Basemap - Addresses and Boundaries

    • search.dataone.org
    • hydroshare.org
    • +1more
    Updated Dec 30, 2023
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    David Arctur; David Maidment (2023). Texas-Harvey Basemap - Addresses and Boundaries [Dataset]. http://doi.org/10.4211/hs.3e251d7d70884abd928d7023e050cbdc
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    Dataset updated
    Dec 30, 2023
    Dataset provided by
    Hydroshare
    Authors
    David Arctur; David Maidment
    Area covered
    Description

    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.

    References: [1] NOAA National Water Model [https://water.noaa.gov/map] [2] TauDEM Downloads [https://hydrology.usu.edu/taudem/taudem5/downloads.html] [3] NFIE Continental Flood Inundation Mapping - Data Repository [https://web.corral.tacc.utexas.edu/nfiedata/] [4] Address Database Gaps, Dec 2017 (download spreadsheet below) [5] Texas Address and Base Layers Story Map [https://www.hydroshare.org/resource/6d5c7dbe0762413fbe6d7a39e4ba1986/] [6] TNRIS/TxGIO StratMap Address Points data downloads [https://tnris.org/stratmap/address-points/]

  4. T

    Boundaries: State of Texas Counties

    • datahub.austintexas.gov
    • data.austintexas.gov
    • +2more
    Updated Dec 1, 2025
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    City of Austin, TX - data.austintexas.gov (2025). Boundaries: State of Texas Counties [Dataset]. https://datahub.austintexas.gov/Locations-and-Maps/Boundaries-State-of-Texas-Counties/tnsq-nquk
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    kml, xml, kmz, csv, xlsx, application/geo+jsonAvailable download formats
    Dataset updated
    Dec 1, 2025
    Dataset authored and provided by
    City of Austin, TX - data.austintexas.gov
    Area covered
    Texas
    Description

    Cartographic Boundary Map provided the State of Texas Open Data Portal here: https://data.texas.gov/dataset/Texas-Counties-Cartographic-Boundary-Map/sw7f-2kkd/about_data

    Terms of Use This product is for informational purposes and may not have been prepared for or be suitable for legal, engineering, or surveying purposes. It does not represent an on-the-ground survey and represents only the approximate relative location of property boundaries. This product has been provided by the City of Austin via the US Census Bureau for the sole purpose of geographic reference. No warranty is made by the City of Austin regarding specific accuracy or completeness.

  5. d

    Data from: Helicopter electromagnetic and magnetic survey data and maps,...

    • catalog.data.gov
    • data.usgs.gov
    • +3more
    Updated Nov 20, 2025
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    U.S. Geological Survey (2025). Helicopter electromagnetic and magnetic survey data and maps, northern Bexar County, Texas [Dataset]. https://catalog.data.gov/dataset/helicopter-electromagnetic-and-magnetic-survey-data-and-maps-northern-bexar-county-texas
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    Dataset updated
    Nov 20, 2025
    Dataset provided by
    United States Geological Surveyhttp://www.usgs.gov/
    Area covered
    Bexar County, Texas
    Description

    Flight-line data release for a helicopter electromagnetic (HEM) and magnetic geophysical survey flown in early December 2003, in Northern Bexar County, Texas. The U.S. Geological Survey (USGS) contracted the survey to Fugro Airborne of Toronto, Canada. Data include coordinates in UTM zone 14 meters, longitude and latitude WGS84, and latitude and longitude (degrees, minutes, and decimal seconds) NAD27.

  6. d

    Geospatial Dataset for the Geologic Framework and Hydrostratigraphy of the...

    • catalog.data.gov
    • data.usgs.gov
    Updated Nov 13, 2025
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    U.S. Geological Survey (2025). Geospatial Dataset for the Geologic Framework and Hydrostratigraphy of the Edwards and Trinity Aquifers within Northern Medina County, Texas at 1:24,000 [Dataset]. https://catalog.data.gov/dataset/geospatial-dataset-for-the-geologic-framework-and-hydrostratigraphy-of-the-edwards-and-tri-9678e
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    Dataset updated
    Nov 13, 2025
    Dataset provided by
    United States Geological Surveyhttp://www.usgs.gov/
    Area covered
    Medina County, Texas
    Description

    This data release supports the U.S. Geological Survey Scientific Investigation Map (SIM) by Clark and others (2020) by documenting the data used to create the geologic maps and describe geologic framework and hydrostratigraphy of the Edwards and Trinity aquifers for a 442 square-mile area in northern Medina County in south Texas. The karstic Edwards and Trinity aquifers that are the subject of the SIM by Clark and others (2020) are classified as major sources of water in south-central Texas by the Texas Water Development Board (George and others, 2011). The geologic framework and hydrostratigraphy of the Edwards and Trinity aquifers largely control groundwater-flow paths and storage in northern Medina County (Kuniasky and Ardis, 2004). The data provided in this data release and the detailed maps and descriptions of the geologic framework and hydrostratigraphy in Clark and others (2020) are intended to help provide water managers information that is useful for effectively managing available groundwater resources in the study area. These digital data accompany Clark, A.K., Morris, R.E., and Pedraza, D.E., 2020, Geologic framework and hydrostratigraphy of the Edwards and Trinity aquifers within northern Medina County, Texas: U.S. Geological Survey Scientific Investigations Map 3461, 13 p. pamphlet, 1 pl., scale 1:24,000, https://doi.org/10.3133/sim3461.

  7. K

    Kerrville, Texas County Boundary Line

    • koordinates.com
    csv, dwg, geodatabase +6
    Updated Aug 19, 2010
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    City of Kerrville, Texas (2010). Kerrville, Texas County Boundary Line [Dataset]. https://koordinates.com/layer/23931-kerrville-texas-county-boundary-line/
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    geopackage / sqlite, shapefile, csv, mapinfo tab, pdf, geodatabase, dwg, mapinfo mif, kmlAvailable download formats
    Dataset updated
    Aug 19, 2010
    Dataset authored and provided by
    City of Kerrville, Texas
    Area covered
    Description

    The linear boundary of the administrative area used for cartographic output.

    This layer is a component of General Purpose Basemap.

    Provides context for a wide range of people and supports a variety of application needs within a local government. The layers in this basemap provide context for multiple workflows, such as editing data or producing web maps. It includes structures, roads, major facilities, water features, and boundaries. This map also includes Campus Basemap can be used to create a high-resolution, multi-scale basemap for a university or business campus. It can also be used by government agencies to produce a high-resolution basemap for a downtown, government complex, or military base.

    © Esri., Inc., City of Kerrville, TX

  8. d

    DIGITAL FLOOD INSURANCE RATE MAP DATABASE, TYLER COUNTY, TX.

    • datadiscoverystudio.org
    • data.wu.ac.at
    Updated Nov 14, 2017
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    (2017). DIGITAL FLOOD INSURANCE RATE MAP DATABASE, TYLER COUNTY, TX. [Dataset]. http://datadiscoverystudio.org/geoportal/rest/metadata/item/574c5212525e4ec9a3ba61d9d9baaa9d/html
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    Dataset updated
    Nov 14, 2017
    Description

    description: The Digital Flood Insurance Rate Map (DFIRM) Database depicts flood risk information and supporting data used to develop the risk data. The primary risk classifications used are the 1-percent-annual-chance flood event, the 0.2-percent-annual-chance flood event, and areas of minimal flood risk. The DFIRM Database is derived from Flood Insurance Studies (FISs), previously published Flood Insurance Rate Maps (FIRMs), flood hazard analyses performed in support of the FISs and FIRMs, and new mapping data, where available. The FISs and FIRMs are published by the Federal Emergency Management Agency (FEMA). The file is georeferenced to earth's surface using the UTM projection and coordinate system. The specifications for the horizontal control of DFIRM data files are consistent with those required for mapping at a scale of 1:12,000. This database was developed for the TYLER County DFIRM project in 2008 by CF3R/Baker for FEMA Region 6.; abstract: The Digital Flood Insurance Rate Map (DFIRM) Database depicts flood risk information and supporting data used to develop the risk data. The primary risk classifications used are the 1-percent-annual-chance flood event, the 0.2-percent-annual-chance flood event, and areas of minimal flood risk. The DFIRM Database is derived from Flood Insurance Studies (FISs), previously published Flood Insurance Rate Maps (FIRMs), flood hazard analyses performed in support of the FISs and FIRMs, and new mapping data, where available. The FISs and FIRMs are published by the Federal Emergency Management Agency (FEMA). The file is georeferenced to earth's surface using the UTM projection and coordinate system. The specifications for the horizontal control of DFIRM data files are consistent with those required for mapping at a scale of 1:12,000. This database was developed for the TYLER County DFIRM project in 2008 by CF3R/Baker for FEMA Region 6.

  9. DIGITAL FLOOD INSURANCE RATE MAP DATABASE, SAN JACINTO COUNTY, TX

    • data.wu.ac.at
    Updated Nov 14, 2017
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    Federal Emergency Management Agency, Department of Homeland Security (2017). DIGITAL FLOOD INSURANCE RATE MAP DATABASE, SAN JACINTO COUNTY, TX [Dataset]. https://data.wu.ac.at/schema/data_gov/YjVjMTE1NzQtOGE0My00N2QzLWI3ODktMDhjMzkwYzZlZDIx
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    Dataset updated
    Nov 14, 2017
    Dataset provided by
    Federal Emergency Management Agencyhttp://www.fema.gov/
    U.S. Department of Homeland Securityhttp://www.dhs.gov/
    License

    U.S. Government Workshttps://www.usa.gov/government-works
    License information was derived automatically

    Area covered
    d8d3a2c5a6787dfc592cfc2333ed1066545ab04b
    Description

    The Digital Flood Insurance Rate Map (DFIRM) Database depicts flood risk information and supporting data used to develop the risk data. The primary risk classifications used are the 1-percent-annual-chance flood event, the 0.2-percent-annual-chance flood event, and areas of minimal flood risk. The DFIRM Database is derived from Flood Insurance Studies (FISs), previously published Flood Insurance Rate Maps (FIRMs), flood hazard analyses performed in support of the FISs and FIRMs, and new mapping data, where available. The FISs and FIRMs are published by the Federal Emergency Management Agency (FEMA). The file is georeferenced to earth's surface using the UTM projection and coordinate system. The specifications for the horizontal control of DFIRM data files are consistent with those required for mapping at a scale of 1:12,000. This database was developed for the SAN JACINTO County DFIRM project in 2009 by CF3R/Baker for FEMA Region 6.

  10. TIGER/Line Shapefile, Current, County, El Paso County, TX, All Roads

    • catalog.data.gov
    Updated Aug 7, 2025
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    U.S. Department of Commerce, U.S. Census Bureau, Geography Division (Point of Contact) (2025). TIGER/Line Shapefile, Current, County, El Paso County, TX, All Roads [Dataset]. https://catalog.data.gov/dataset/tiger-line-shapefile-current-county-el-paso-county-tx-all-roads
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    Dataset updated
    Aug 7, 2025
    Dataset provided by
    United States Census Bureauhttp://census.gov/
    United States Department of Commercehttp://commerce.gov/
    Area covered
    El Paso County, Texas
    Description

    This resource is a member of a series. The TIGER/Line shapefiles and related database files (.dbf) are an extract of selected geographic and cartographic information from the U.S. Census Bureau's Master Address File / Topologically Integrated Geographic Encoding and Referencing (MAF/TIGER) System (MTS). The MTS represents a seamless national file with no overlaps or gaps between parts, however, each TIGER/Line shapefile is designed to stand alone as an independent data set, or they can be combined to cover the entire nation. The All Roads shapefile includes all features within the MTS Super Class "Road/Path Features" distinguished where the MAF/TIGER Feature Classification Code (MTFCC) for the feature in the MTS that begins with "S". This includes all primary, secondary, local neighborhood, and rural roads, city streets, vehicular trails (4wd), ramps, service drives, alleys, parking lot roads, private roads for service vehicles (logging, oil fields, ranches, etc.), bike paths or trails, bridle/horse paths, walkways/pedestrian trails, and stairways.

  11. DIGITAL FLOOD INSURANCE RATE MAP DATABASE, HOUSTON COUNTY, TX

    • data.wu.ac.at
    Updated Nov 14, 2017
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    Federal Emergency Management Agency, Department of Homeland Security (2017). DIGITAL FLOOD INSURANCE RATE MAP DATABASE, HOUSTON COUNTY, TX [Dataset]. https://data.wu.ac.at/schema/data_gov/OTQ5YWE1ZDEtMjc1ZS00MGZmLThmZmEtMTZmOTBkMzBkNmQ4
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    Dataset updated
    Nov 14, 2017
    Dataset provided by
    Federal Emergency Management Agencyhttp://www.fema.gov/
    U.S. Department of Homeland Securityhttp://www.dhs.gov/
    License

    U.S. Government Workshttps://www.usa.gov/government-works
    License information was derived automatically

    Area covered
    7fbe919bc8ae0a48416851783f128ebb671a3952
    Description

    The Digital Flood Insurance Rate Map (DFIRM) Database depicts flood risk information and supporting data used to develop the risk data. The primary risk classifications used are the 1-percent-annual-chance flood event, the 0.2-percent-annual-chance flood event, and areas of minimal flood risk. The DFIRM Database is derived from Flood Insurance Studies (FISs), previously published Flood Insurance Rate Maps (FIRMs), flood hazard analyses performed in support of the FISs and FIRMs, and new mapping data, where available. The FISs and FIRMs are published by the Federal Emergency Management Agency (FEMA). The file is georeferenced to earth's surface using the UTM projection and coordinate system. The specifications for the horizontal control of DFIRM data files are consistent with those required for mapping at a scale of 1:12,000. This database was developed for the Houston County DFIRM project in 2008 by CF3R/Baker for FEMA Region 6.

  12. A

    Digital Flood Insurance Rate Map Database for Brazos County, TX, USA

    • data.amerigeoss.org
    arce +2
    Updated Jul 31, 2019
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    United States (2019). Digital Flood Insurance Rate Map Database for Brazos County, TX, USA [Dataset]. https://data.amerigeoss.org/fi/dataset/digital-flood-insurance-rate-map-database-for-brazos-county-tx-usacb87f
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    arce, mapinfo interchange file (mif), shpAvailable download formats
    Dataset updated
    Jul 31, 2019
    Dataset provided by
    United States
    License

    U.S. Government Workshttps://www.usa.gov/government-works
    License information was derived automatically

    Area covered
    Brazos County, United States, Texas
    Description

    The Digital Flood Insurance Rate Map (DFIRM) Database depicts flood risk information and supporting data used to develop the risk data. The primary risk classifications used are the 1-percent-annual-chance flood event, the 0.2-percent-annual- chance flood event, and areas of minimal flood risk. The DFIRM Database is derived from Flood Insurance Studies (FISs), previously published Flood Insurance Rate Maps (FIRMs), flood hazard analyses performed in support of the FISs and FIRMs, and new mapping data, where available. The FISs and FIRMs are published by the Federal Emergency Management Agency (FEMA). This file is georeferenced to the earth's surface using the Lambert Conformal Conic projection and the Texas State Plane NAD83 Central Zone coordinate system, projection and coordinate system. The specifications for the horizontal control of DFIRM data files are consistent with those required for mapping at a scale of 1:12,000. The Vertical Datum of this data set is North American Vertical Datum 1988 (NAVD88). The specifications for the vertical control of DFIRM data files are consistent with those required for mapping at a vertical accuracy of 2.4 feet or better.

  13. DIGITAL FLOOD INSURANCE RATE MAP DATABASE, CHEROKEE COUNTY, TX

    • data.wu.ac.at
    Updated Nov 14, 2017
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    Federal Emergency Management Agency, Department of Homeland Security (2017). DIGITAL FLOOD INSURANCE RATE MAP DATABASE, CHEROKEE COUNTY, TX [Dataset]. https://data.wu.ac.at/schema/data_gov/YWM4ODdiOTUtNWRhOS00MjAxLTkxNjMtYmE2MjQxYzMyZWE1
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    Dataset updated
    Nov 14, 2017
    Dataset provided by
    Federal Emergency Management Agencyhttp://www.fema.gov/
    U.S. Department of Homeland Securityhttp://www.dhs.gov/
    License

    U.S. Government Workshttps://www.usa.gov/government-works
    License information was derived automatically

    Area covered
    84d6881d2cabeed26abf4fea9e5ea0e701fd9209
    Description

    The Digital Flood Insurance Rate Map (DFIRM) Database depicts flood risk information and supporting data used to develop the risk data. The primary risk classifications used are the 1-percent-annual-chance flood event, the 0.2-percent-annual-chance flood event, and areas of minimal flood risk. The DFIRM Database is derived from Flood Insurance Studies (FISs), previously published Flood Insurance Rate Maps (FIRMs), flood hazard analyses performed in support of the FISs and FIRMs, and new mapping data, where available. The FISs and FIRMs are published by the Federal Emergency Management Agency (FEMA). The file is georeferenced to earth's surface using the UTM projection and coordinate system. The specifications for the horizontal control of DFIRM data files are consistent with those required for mapping at a scale of 1:12,000. This database was developed for the CHEROKEE County DFIRM project in 2008 by CF3R/Baker for FEMA Region 6.

  14. K

    City of Dallas, Texas Two Foot Contours (2009)

    • koordinates.com
    csv, dwg, geodatabase +6
    Updated May 10, 2019
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    City of Dallas, Texas (2019). City of Dallas, Texas Two Foot Contours (2009) [Dataset]. https://koordinates.com/layer/101415-city-of-dallas-texas-two-foot-contours-2009/
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    kml, mapinfo mif, csv, geopackage / sqlite, dwg, geodatabase, shapefile, mapinfo tab, pdfAvailable download formats
    Dataset updated
    May 10, 2019
    Dataset authored and provided by
    City of Dallas, Texas
    Area covered
    Description

    Geospatial data about City of Dallas, Texas Two Foot Contours (2009). Export to CAD, GIS, PDF, CSV and access via API.

  15. d

    Data from: U.S. Geological Survey Gap Analysis Program- Land Cover Data v2.2...

    • search.dataone.org
    • data.globalchange.gov
    • +2more
    Updated Dec 1, 2016
    + more versions
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    U.S. Geological Survey Gap Analysis Program, Anne Davidson, Spatial Ecologist (2016). U.S. Geological Survey Gap Analysis Program- Land Cover Data v2.2 [Dataset]. https://search.dataone.org/view/083f5422-3fb4-407c-b74a-a649e70a4fa9
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    Dataset updated
    Dec 1, 2016
    Dataset provided by
    United States Geological Surveyhttp://www.usgs.gov/
    Authors
    U.S. Geological Survey Gap Analysis Program, Anne Davidson, Spatial Ecologist
    Time period covered
    Jan 1, 1999 - Jan 1, 2001
    Area covered
    Variables measured
    CL, SC, DIV, FRM, OID, RED, BLUE, COUNT, GREEN, VALUE, and 9 more
    Description

    This dataset combines the work of several different projects to create a seamless data set for the contiguous United States. Data from four regional Gap Analysis Projects and the LANDFIRE project were combined to make this dataset. In the northwestern United States (Idaho, Oregon, Montana, Washington and Wyoming) data in this map came from the Northwest Gap Analysis Project. In the southwestern United States (Colorado, Arizona, Nevada, New Mexico, and Utah) data used in this map came from the Southwest Gap Analysis Project. The data for Alabama, Florida, Georgia, Kentucky, North Carolina, South Carolina, Mississippi, Tennessee, and Virginia came from the Southeast Gap Analysis Project and the California data was generated by the updated California Gap land cover project. The Hawaii Gap Analysis project provided the data for Hawaii. In areas of the county (central U.S., Northeast, Alaska) that have not yet been covered by a regional Gap Analysis Project, data from the Landfire project was used. Similarities in the methods used by these projects made possible the combining of the data they derived into one seamless coverage. They all used multi-season satellite imagery (Landsat ETM+) from 1999-2001 in conjunction with digital elevation model (DEM) derived datasets (e.g. elevation, landform) to model natural and semi-natural vegetation. Vegetation classes were drawn from NatureServe's Ecological System Classification (Comer et al. 2003) or classes developed by the Hawaii Gap project. Additionally, all of the projects included land use classes that were employed to describe areas where natural vegetation has been altered. In many areas of the country these classes were derived from the National Land Cover Dataset (NLCD). For the majority of classes and, in most areas of the country, a decision tree classifier was used to discriminate ecological system types. In some areas of the country, more manual techniques were used to discriminate small patch systems and systems not distinguishable through topography. The data contains multiple levels of thematic detail. At the most detailed level natural vegetation is represented by NatureServe's Ecological System classification (or in Hawaii the Hawaii GAP classification). These most detailed classifications have been crosswalked to the five highest levels of the National Vegetation Classification (NVC), Class, Subclass, Formation, Division and Macrogroup. This crosswalk allows users to display and analyze the data at different levels of thematic resolution. Developed areas, or areas dominated by introduced species, timber harvest, or water are represented by other classes, collectively refered to as land use classes; these land use classes occur at each of the thematic levels. Raster data in both ArcGIS Grid and ERDAS Imagine format is available for download at http://gis1.usgs.gov/csas/gap/viewer/land_cover/Map.aspx Six layer files are included in the download packages to assist the user in displaying the data at each of the Thematic levels in ArcGIS. In adition to the raster datasets the data is available in Web Mapping Services (WMS) format for each of the six NVC classification levels (Class, Subclass, Formation, Division, Macrogroup, Ecological System) at the following links. http://gis1.usgs.gov/arcgis/rest/services/gap/GAP_Land_Cover_NVC_Class_Landuse/MapServer http://gis1.usgs.gov/arcgis/rest/services/gap/GAP_Land_Cover_NVC_Subclass_Landuse/MapServer http://gis1.usgs.gov/arcgis/rest/services/gap/GAP_Land_Cover_NVC_Formation_Landuse/MapServer http://gis1.usgs.gov/arcgis/rest/services/gap/GAP_Land_Cover_NVC_Division_Landuse/MapServer http://gis1.usgs.gov/arcgis/rest/services/gap/GAP_Land_Cover_NVC_Macrogroup_Landuse/MapServer http://gis1.usgs.gov/arcgis/rest/services/gap/GAP_Land_Cover_Ecological_Systems_Landuse/MapServer

  16. i

    Wealth Statistics for Dallas County, Texas

    • interactive-map-ai.com
    Updated Nov 27, 2025
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    Map AI (2025). Wealth Statistics for Dallas County, Texas [Dataset]. https://interactive-map-ai.com/explore/us/TX/dallas-county/wealth
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    Dataset updated
    Nov 27, 2025
    Dataset authored and provided by
    Map AI
    Time period covered
    2020 - Present
    Area covered
    Variables measured
    Gini Index, Unemployment Rate, Median Household Income
    Description

    Dallas County, TX has a C wealth grade. Median household income: $74,236. Unemployment rate: 4.9%. Income grows 5.3% yearly.

  17. a

    Plat Maps and Land Records

    • hub.arcgis.com
    • gis-bexar.opendata.arcgis.com
    Updated Mar 7, 2024
    + more versions
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    Bexar County (2024). Plat Maps and Land Records [Dataset]. https://hub.arcgis.com/documents/b4b6dfe71a5044ae9413cb7c2ee977b3
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    Dataset updated
    Mar 7, 2024
    Dataset authored and provided by
    Bexar County
    Description

    FOR PLAT MAPS AND OTHER LAND DOCUMENTS, PLEASE VISIT THE COUNTY CLERK’S OFFICIAL RECORDS SEARCH: HTTPS://BEXAR.TX.PUBLICSEARCH.US.The Bexar County GIS Team does not have purview over plat maps and other land records. Please visit the Bexar County Clerk’s Official Records Search.

  18. w

    DIGITAL FLOOD INSURANCE RATE MAP DATABASE, ECTOR COUNTY, TX

    • data.wu.ac.at
    arce +2
    Updated Nov 14, 2017
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    Federal Emergency Management Agency, Department of Homeland Security (2017). DIGITAL FLOOD INSURANCE RATE MAP DATABASE, ECTOR COUNTY, TX [Dataset]. https://data.wu.ac.at/schema/data_gov/OTRkNmMzNGUtYzRhNi00OWUzLThiMWMtNzg2ZjE0MzFlNjRj
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    arce, mapinfo interchange file (mif), shpAvailable download formats
    Dataset updated
    Nov 14, 2017
    Dataset provided by
    Federal Emergency Management Agency, Department of Homeland Security
    License

    U.S. Government Workshttps://www.usa.gov/government-works
    License information was derived automatically

    Area covered
    4b3106a5befaa31458073bb656c8f16d02eb0758
    Description

    The Digital Flood Insurance Rate Map (DFIRM) Database depicts flood risk information and supporting data used to develop the risk data. The primary risk classifications used are the 1-percent-annual-chance flood event, the 0.2-percent-annual- chance flood event, and areas of minimal flood risk. The DFIRM Database is derived from Flood Insurance Studies (FISs), previously published Flood Insurance Rate Maps (FIRMs), flood hazard analyses performed in support of the FISs and FIRMs, and new mapping data, where available. The FISs and FIRMs are published by the Federal Emergency Management Agency (FEMA).The file is georeferenced to earth's surface using the State Plane projection and coordinate system. The specifications for the horizontal control of DFIRM data files are consistent with those required for mapping at a scale of 1:12,000.

  19. K

    City of Dallas, Texas City Limits

    • koordinates.com
    csv, dwg, geodatabase +6
    Updated May 10, 2019
    + more versions
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    City of Dallas, Texas (2019). City of Dallas, Texas City Limits [Dataset]. https://koordinates.com/layer/101414-city-of-dallas-texas-city-limits/
    Explore at:
    geodatabase, kml, pdf, csv, mapinfo tab, shapefile, geopackage / sqlite, dwg, mapinfo mifAvailable download formats
    Dataset updated
    May 10, 2019
    Dataset authored and provided by
    City of Dallas, Texas
    Area covered
    Description

    Geospatial data about City of Dallas, Texas City Limits. Export to CAD, GIS, PDF, CSV and access via API.

  20. a

    North Project Parcels

    • hub.arcgis.com
    Updated Sep 2, 2016
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    Bastrop County, Texas Online Maps (2016). North Project Parcels [Dataset]. https://hub.arcgis.com/maps/BasCoGIS::north-project-parcels
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    Dataset updated
    Sep 2, 2016
    Dataset authored and provided by
    Bastrop County, Texas Online Maps
    Area covered
    Description

    Land parcels for the purpose of fuel mitigation of the Bastrop County North Fuel Mitigation Project TX-1999-012.

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Texas Department of Transportation (2016). Texas County Boundaries (line) [Dataset]. https://gis-txdot.opendata.arcgis.com/datasets/texas-county-boundaries-line
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Texas County Boundaries (line)

Explore at:
Dataset updated
Jul 19, 2016
Dataset authored and provided by
Texas Department of Transportationhttp://txdot.gov/
Area covered
Description

This dataset was created by the Transportation Planning and Programming (TPP) Division of the Texas Department of Transportation (TxDOT) for planning and asset inventory purposes, as well as for visualization and general mapping. County boundaries were digitized by TxDOT using USGS quad maps, and converted to line features using the Feature to Line tool. This dataset depicts a generalized coastline.Update Frequency: As NeededSource: Texas General Land OfficeSecurity Level: PublicOwned by TxDOT: FalseRelated LinksData Dictionary PDF [Generated 2025/03/14]

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