Historically, Texans have turned to the Texas General Land Office for maps and other tools used to organize information about the natural resources this state has to offer.

Besides historical maps, research, and data, the land office today uses Geographic Information Systems (GIS), global positioning systems (GPS), and computer-aided design (CAD) systems to compile, analyze, and distribute the most accurate information possible about the location of natural and human-made resources. These tools support the business functions of the General Land Office and serve as critical tools in the study and protection of our state's valued resources. The Land Office website contains a collection of dynamic interactive mapping websites that give Texans access to the vast collection of spatial data available at the agency.

GIS Map Viewers

GIS Web Viewer


The GISWEB, an interactive mapping application, provides access to vast collections of land and energy related data at the Texas General Land Office. The GISWEB display upland and submerged Original Texas Land Survey boundaries, Permanent School Fund land, upland and coastal leases, oil and gas well locations, and current imagery.

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Texas Coastal Sediments Geodatabase

Texas Coastal Sediments Geodatabase

The Texas Coastal Sediments Geodatabase (TxSed) is sediment related geospatial and geotechnical data.  TxSed can be used to assist in identifying compatible sediment resources for proposed beach nourishment or habitat restoration projects, and can be used as an aid in the permitting/regulatory processes for such projects.

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State of Texas Oil Spill Response Mapping Tool

STORM - State of Texas Oil Spill Response Mapping Tool

Spill Toolkit, EPA National Disaster Operational Workgroup, TABS Buoy Gulf of Mexico weather and new tools like the advanced drawing tool.

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Homeowner Opportunity Program Area Locater Mapping Application

Homeowner Opportunity Program Area Locater Mapping Application

The Homeowner Opportunity Program (HOP) is a Disaster Recovery Housing Program through which income-qualified applicants who live in FEMA-designated “High Risk” areas or areas of high minority and/or poverty concentration may elect to rehabilitate or reconstruct their existing home or relocate to a safer and higher opportunity area.

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CDBG Disaster Recovery Mapping System

CDBG Disaster Recovery Mapping System

This interactive tool displays the Community Development Block Grant Program information

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Energy Resource Data

State Submerged Lands

State-owned tracts in offshore waters and coastal bays. These tracts are owned and leased by the GLO.

Oil & Gas Leases

Oil and Gas Leases managed by the Texas General Land Office.

Oil & Gas Lease Sale Nominations (January 2016)

Nominations for the upcoming oil/gas sealed bid lease sale. This dataset is updated one month prior to each lease sale.

Oil & Gas Pooling Agreements/Units

Oil and Gas pooling agreements managed by the Texas General Land Office.

Professional Services Data

Coastal Leases (Point Locations)

Locations of structures and activities permitted by the GLO within state-owned land and waters. Includes features represented by a single point location, such as piers, docks, breakwaters, and shoreline protection projects.

Coastal Leases (Polygonal Locations)

Locations of structures and activities permitted by the GLO within state-owned land and waters. Includes areal features such as dredging areas, parks, mitigation projects, and conservation easements.

Pipelines and Miscellaneous Easements

Pipelines located in state-owned submerged lands and other areas along the Texas Gulf Coast.

Oil Spill/Coastal Response Data

Beach Access Points

Public beach access points. Mapped by the GLO in cooperation with coastal towns and counties.

Colonial Waterbird Rookery Areas

Locations of waterbird rookery sites in the coastal counties of Texas. Information compiled by the Texas Colonial Waterbird Society.

Dispersant Use Pre-Approval Zone

Boundaries of pre-approved area for use of dispersant in oil spill response. Boundaries were created by combining the 10-meter offshore bathymetric contour and the three nautical mile line. The boundary follows whichever line is farthest offshore. Data are not to be used for navigation or for mapping at large scales.

Environmental Sensitivity Index Shoreline

Shoreline of Texas with Environmental Sensitivity Index classification (sensitivity of shoreline habitats to oil contamination and removal). Classification conducted by the University of Texas Bureau of Economic Geology.

In-Situ Burn Exclusion Areas

Areas designated by the Oil Spill Regional Response Team VI where in-situ burns are prohibited.

Priority Protection Habitat Areas

Priority coastal habitat areas to be protected during oil or hazardous material spills on the Texas coast. Areas were identified and prioritized by TPWD and GLO personnel in cooperation with other entities.


Coastal distribution of animals, plants and habitats potentially at risk from oil spill damage or response activities. Mapped as part of a joint project involving GLO, TPWD and other entities.

Three Marine League Line

The boundary between state and federal jurisdiction located three marine leagues (approx. 10 miles) offshore in the Gulf of Mexico.

Three Nautical Mile Line

Line of demarcation three nautical miles offshore of the Texas coast in the Gulf of Mexico.

Coastal Management Program Data

State Tracts with Resource Management Codes

State-owned tracts in offshore waters and coastal bays, with codes added that reflect restrictions and concerns associated with leasing of these tracts.