Texas_Counties

StratMap 20010920 Texas_Counties Austin, TX Texas Natural Resources Information System withheld Texas_Counties vector digital data The statewide Texas boundary dataset is one component of the Texas Strategic Mapping Program (StratMap). The StratMap program developed seven digital base map, or ?Framework,? layers for Texas. StratMap is managed by the Texas Natural Resources Information System (TNRIS), a division of the Texas Water Development Board (TWDB). All data produced through StratMap are available in the public domain. The StratMap boundary dataset produced files corresponding to multi-county councils of government across Texas as well as a statewide dataset. Each boundary file has five themes including state, county, city, parks, and other (i.e. federal lands, landmarks, country clubs). The data sources for each council of government coverage vary but could include digital orthophoto quads (DOQs), USGS digital raster graphics (DRGs), Texas Department of Transportation data, and local data from the council of governments or its component governments. The attribute coding scheme is designed to accommodate several basic cartographic data categories such as feature type, feature name, jurisdiction entity, data source used in feature collection, data source date and revision date(s) if applicable. The StratMap boundary ESRI export file was exported as an ESRI shape file for editing. The county boundary along the gulfcoast was edited to reflect the 3 marine league limit instead of the 3 nautical mile limit mistakingly included in the original ESRI export file. Three new shape files were created that include the Texas gulfcoast digitized by TxDOT and aggregated by TNRIS (counties_with_Gulf_Coast, COGs_with_Gulf_Coast, and Texas_with_Gulf_Coast). Completed shape files were imported into an ESRI personal geodatabase for distribution. This data is suitable for general planning purposes. Inconsistencies between data sources were not always resolved and in some cases features which should be co-existent will be represented by several contradictory lines. This is most readily apparent where municipal and county boundaries should correspond but do not due to different sources of the input data. Please see Process Step #1 for more information on how differences between data sources were handled. en REQUIRED: The year (and optionally month, or month and day) for which the data set corresponds to the ground. 20010920 Complete Irregular -107.004057 -93.194696 36.556753 25.646602 -405009.811124 3688719.747121 12400719.202716 16303759.652815 None State boundaries county boundaries state boundary city boundaries Texas TX None None None StratMap does not warrant this data for any particular use and is not responsible for any damages resulting from the use of the data. Users of these files should be aware that (1) StratMap data are not authoritative representations of legal boundaries, (2) StratMap boundary lines are subject to change and corrections, (3) StratMap boundaries were generated from the best available data which are subject to change, and (4) StratMap is updating boundary data and has a process for collecting and noting boundary changes. Contact StratMap for more details. Acknowledgement of the StratMap program and Titan Systems Corp.,is appreciated in products derived and used from these data. Texas Natural Resources Information System State Cartographer Mailing address

P O Box 13231

Austin TX 78711-3231 USA 512-463-8337 512-463-7274 request@tnris.state.tx.us 0730 - 1730 Monday-Friday CST Titan Systems Corporation None Unclassified None ESRI ArcCatalog 9.3.0.1770 Feature Class See Entity_Attribute_Information See Explanation Attribute accuracy is described, where present, with each attribute defined in the Entity and Attribute Section. Polygon and chain-node topology present. This data set includes polygonal representation of physical and political boundary data for the State of Texas. The data has been subdivided and delivered based on each of the 24 Texas Councils of Government (COGs). The multiple boundary layers were visually inspected and compared to source maps by a second technician to ensure reasonable horizontal position accuracy. Where necessary, areas were plotted at larger scales to aid visual inspection of detailed areas of the data set. Data photorevised to the DOQQs: +/-10 meters. Data revised to the DRGs: +/- 12 meters. Resolution as reported. U.S. Geological Survey, reprocessed by Beartooth Mapping and the Natural Resources and Conservation Service. 1950 - 1999 Digital Raster Graphic (DRG) 24,000 digital file Texas Orthoimagery Program (TOP) and U.S. Geological Survey 1998 - 2001 Digital Ortho Quarter Quad (DOQQ) 12,000 digital file This process step outlines the general data hierarchy used for producing boundary data for the Texas Strategic Mapping Program (StratMap). Each dataset's position in the data hierarchy is determined by its spatial and temporal accuracy. Spatial accuracy is the difference between a dataset's georeferenced location and the dataset's true location. Temporal accuracy refers to how current the dataset is. For county and state boundaries, only the DRG dataset was used. For the municipal boundaries local data was used if supplied, otherwise the municipality was derived from the TxDOT DGN area files (temporally accurate) and revised to DRG files (spatially correct). In this case only entire polygons were moved to a "best fit" of the DRG, individual vertices were not manipulated. Only non-contiguous polygons were moved in this manner. County and state boundary polygons contiguous with other county and state polygons were left alone. For the parks and "other" boundaries the polygons were derived from TxDOT DGN area files when supplied and updated to the DOQQs. In this case vertices were moved to fit the DOQQ. If no TxDOT DGN area file was supplied the polygon was heads-up digitized from the DOQQ. The TxDOT County Maps of Texas: 1998" and corresponding map sheets were used to identify features to capture when not provided in digital format. Digitize county and state boundaries using 1:24,000 scale seamless DRGs obtained from the National Resource Conservation Service (NRCS) as a background. Digitizing was performed by tracing over boundaries in a "heads up" manner, not by using a digitizing tablet. Create city coverage. Use local data if available (Houston was the only local data provided). Adjacent city polygons were merged to local data polygons (Houston). Surrounding polygons were converted from TxDOT area files. The locally supplied data was not moved. In the case local data was unavailable, shapefiles were converted from TxDOT DGN files levels 10-20 into shapefile format. These levels correspond to feature classes 10 - void areas, 11-20 municipal areas. Convert shapefile into ArcInfo regions coverage. Create park coverage. Convert shapes from TxDOT DGN files levels 22, 24, 25, 32, 48, 53, and 54 into shapefile format. These levels correspond to feature classes County Park, state park, national park, amusement park, forest, park, City Park, respectively. Revise boundaries to DOQQs. Convert shapefile into ArcInfo regions coverage. Generate "other" coverage. Convert shapes from TxDOT DGN files levels 21, 23, 26, 27, 29, 30, 31, and 49, into shapefile format. These levels correspond to feature classes: These levels correspond to feature classes airport, military base, country club/golf course, university/state school, wildlife management area, national grassland, mental health mental retardation (mhmr), airport, respectively. Revise boundaries to DOQQs. Convert shapefile into ArcInfo regions coverage. Dataset copied. withheld Metadata imported. withheld 20030822 14081600 Dataset copied. withheld 20071214 18432300 Dataset copied. withheld 20080227 09062200 Dataset copied. withheld 20101119 16325800 Vector Simple FALSE 0 TRUE FALSE North American Datum of 1983 Geodetic Reference System 80 6378137.000000 298.257222 GCS_North_American_1983 NAD_1983_StatePlane_Texas_South_Central_FIPS_4204_Feet coordinate pair survey feet 0.000512 0.000512 Explicit elevation coordinate included with horizontal coordinates 1.000000 counties_sarb County boundaries with three marine league coastal limit. Feature Class 0 SHAPE_LENG OBJECTID OID 4 10 0 Internal feature number. Esri Sequential unique whole numbers that are automatically generated. Shape Shape Geometry 8 0 0 Feature geometry. ESRI Coordinates defining the features. SHAPE FIPS SmallInteger 2 5 0 Feature geometry. ESRI Coordinates defining the features. FIPS JURISDCTN String 30 0 0 Feature geometry. Esri Coordinates defining the features. Shape_Leng SOURCE String 16 0 0 Length of feature in internal units. Esri Positive real numbers that are automatically generated. JURISDCTN Type of limit (e.g. boundary). StratMap SRC_DATE String 8 0 0 SOURCE Date of original data. StratMap SOURCE_REV String 8 0 0 SRC_DATE Source of revisions. StratMap SRC_REV_DT String 8 0 0 SOURCE_REV Date of revisions. StratMap NAME String 80 0 0 SRC_REV_DT Name of boundary. StratMap ID SmallInteger 2 5 0 NAME TYPE_ String 30 0 0 ID SHAPE_LENG Double 8 38 8 SHAPE_LE_1 SHAPE_Le_2 Double 8 38 8 Feature geometry. Esri Coordinates defining the features. TYPE_ SHAPE_LE_1 Double 8 38 8 Feature geometry. Esri Coordinates defining the features. Shape_Le_1 Shape.STArea() Double 0 0 0 Area of feature in internal units squared. Esri Positive real numbers that are automatically generated. Shape.STLength() Shape.STLength() Double 0 0 0 Counties with Gulfcoast County boundaries with gulfcoast. COGs Council of Government boundaries with three marine league coastal limit. COGs with Gulfcoast Council of Government Boundaries with gulfcoast. Texas Texas boundary with three marine league coastal limit. Texas with Gulfcoast Texas boundary with gulfcoast. Cities, Incorporated Incorporated city boundaries. Parks Park boundaries Other Other boundaries including universities, airports, and large industrial areas. Not Available Texas Natural Resource Information Systems State Cartographer Mailing address

P O Box 13231

Austin TX 78711-3231 USA 512-463-8337 512-463-7274 request@tnris.state.tx.us 0730 - 1730 Monday-Friday CST also at www.tnris.state.tx.us State Boundaries No warranty expressed or implied is made by Titan Systems Corp., or the state of Texas regarding utility of the data on any system, nor shall the act of distribution constitute any such warranty. ESRI Personal Geodatabase withheld CD-ROM ISO-9660 This CD-ROM can be used with all computer operating systems that support CD-ROM as a logical storage device. All text files are in ASCII format. Data files are in ASCII or binary format. Fees: Call (or visit www.tnris.state.tx.us) for current pricing. 20100709 Texas Natural Resources Information System REQUIRED: The person responsible for the metadata information. REQUIRED: The mailing and/or physical address for the organization or individual. REQUIRED: The city of the address. REQUIRED: The state or province of the address. REQUIRED: The ZIP or other postal code of the address. REQUIRED: The telephone number by which individuals can speak to the organization or individual. en FGDC Content Standards for Digital Geospatial Metadata FGDC-STD-001-1998 local time 20160906 10414600 FALSE 20250616 09332500 20250616 09332500 counties_sarb 002 0.000 Projected GCS_WGS_1984 Linear Unit: Meter (1.000000) WGS_1984_Web_Mercator_Auxiliary_Sphere <ProjectedCoordinateSystem xsi:type='typens:ProjectedCoordinateSystem' xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance' xmlns:xs='http://www.w3.org/2001/XMLSchema' xmlns:typens='http://www.esri.com/schemas/ArcGIS/3.4.0'><WKT>PROJCS["WGS_1984_Web_Mercator_Auxiliary_Sphere",GEOGCS["GCS_WGS_1984",DATUM["D_WGS_1984",SPHEROID["WGS_1984",6378137.0,298.257223563]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION["Mercator_Auxiliary_Sphere"],PARAMETER["False_Easting",0.0],PARAMETER["False_Northing",0.0],PARAMETER["Central_Meridian",0.0],PARAMETER["Standard_Parallel_1",0.0],PARAMETER["Auxiliary_Sphere_Type",0.0],UNIT["Meter",1.0],AUTHORITY["EPSG",3857]]</WKT><XOrigin>-20037700</XOrigin><YOrigin>-30241100</YOrigin><XYScale>10000</XYScale><ZOrigin>0</ZOrigin><ZScale>1</ZScale><MOrigin>0</MOrigin><MScale>1</MScale><XYTolerance>0.001</XYTolerance><ZTolerance>0.001</ZTolerance><MTolerance>0.001</MTolerance><HighPrecision>true</HighPrecision><WKID>102100</WKID><LatestWKID>3857</LatestWKID></ProjectedCoordinateSystem> 1.0 Item Description Esri ArcGIS 13.4.0.55405 counties_sarb -405009.811124 3688719.747121 16303759.652815 12400719.202716 1 -107.004057 -93.194696 36.556753 25.646602 1 ISO 19115 Geographic Information - Metadata DIS_ESRI1.0 dataset 002 withheld Local Area Network Feature Class Enterprise Geodatabase Feature Class 0.000 NAD_1983_StatePlane_Texas_South_Central_FIPS_4204_Feet EPSG 6.18.3(9.3.1.2) 0 20250616