Data SourcesThis table provides a listing of the GIS data layers, a description of the layer, and the source of the data. |
| Layer | Description | Digital Data Source |
|---|---|---|
Airports |
Airports, runways, and landing strips | Railroad Commission: digitized from U.S. Geological Survey 7.5 minute quadrangle topographic maps. |
| Bay Tracts | Bay tracts | Railroad Commission: digitized from Texas General Land Office maps. |
| Cemeteries | Cemeteries | Railroad Commission: digitized from U.S. Geological Survey 7.5 minute quadrangle topographic maps. |
| Cities | City Limits | Texas Department of Transportation |
| Counties | County boundaries | Railroad Commission: digitized from U.S. Geological Survey 7.5 minute quadrangle topographic maps. |
| Counties Offshore | Extension of coastal county boundary to the Three League Line. | Railroad Commission: digitized from U.S. Geological Survey 7.5 minute quadrangle topographic maps. |
| Government Lands | Parks and military reservations | Railroad Commission: digitized from U.S. Geological Survey 7.5 minute quadrangle topographic maps. |
| Gulf Areas | Texas offshore area boundaries in the Gulf of Mexico | Railroad Commission: digitized from U.S. Department of the Interior, Minerals Management Service, Texas Outer Continental Shelf leasing maps. |
| Offshore Tracts | Texas offshore state tracts in the Gulf of Mexico | Railroad Commission: digitized from U.S. Department of the Interior, Minerals Management Service, Texas Outer Continental Shelf leasing maps. |
| Pipelines | Natural gas, crude oil, and refined products pipelines. | Railroad Commission public records. |
| Railroads | Mainline railroads, sidings, spur tracks, and railroad yards. | Railroad Commission: digitized from U.S. Geological Survey 7.5 minute quadrangle topographic maps. |
| Rivers, Creeks, Streams, etc. | Major rivers, creeks and streams, and lakes, bays and the Gulf of Mexico | Railroad Commission: digitized from U.S. Geological Survey 7.5 minute quadrangle topographic maps. |
| Roads | Streets and roads | Bureau of Transportation Studies |
| RRC Oil and Gas Districts | Railroad Commission Oil and Gas Division district boundaries | Railroad Commission |
| Subdivisions | Subdivisions, including boundaries, lots, blocks, labors, etc., in areas with oil and gas activity | Railroad Commission: subdivision lines from RRC public records were interpreted onto U.S. Geological Survey 7.5 minute quadrangle topographic maps. |
| Surveys | Original Texas Land Surveys (OTLS), survey names/numbers, and abstract numbers - This not a survey grade product and should not be used to define or establish survey boundaries. | Railroad Commission: Patent survey lines from Texas General Land Office county maps were interpreted onto U.S. Geological Survey 7.5 minute quadrangle topographic maps. |
| Wells | Oil, gas, injection and other wells regulated by the Railroad Commission | Railroad Commission public records. |
