Description: This data set represents the extent, approximate location and type of wetlands and deepwater habitats in the conterminous United States. These data delineate the areal extent of wetlands and surface waters as defined by Cowardin et al. (1979). Certain wetland habitats are excluded from the National mapping program because of the limitations of aerial imagery as the primary data source used to detect wetlands. These habitats include seagrasses or submerged aquatic vegetation that are found in the intertidal and subtidal zones of estuaries and near shore coastal waters. Some deepwater reef communities (coral or tuberficid worm reefs) have also been excluded from the inventory. These habitats, because of their depth, go undetected by aerial imagery. By policy, the Service also excludes certain types of "farmed wetlands" as may be defined by the Food Security Act or that do not coincide with the Cowardin et al. definition. Contact the Service's Regional Wetland Coordinator for additional information on what types of farmed wetlands are included on wetland maps.
Description: This dataset includes road and street centerlines for all 16 counties in the North Central Texas Council of Governments region. Features were rectified to the latest aerial photography available for each county during the years of 2003 - 2005. Collin, Dallas, Denton, Ellis, Kaufman, Navarro, Rockwall & Tarrant counties were based on orthos with a relative accuracy of 6 inches. The remaining counties were based on orthos with a 2-foot relative accuracy. This file is for reference use only. NCTCOG and its members are not responsible for errors or inaccuracies in the file.
Service Item Id: 44fa53a95f19452fb1c0b736ef0c8849
Copyright Text: User should include a credit reference to NCTCOG in any publications or products that make use of the data similar to the following: ”Data from the North Central Texas Council of Governments was used in the preparation of this product.”
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