2014082209014700FALSE20120727195950002012072719595000FALSEProject ESRIlakes R:\Gwen\DATA_SOURCES\ESRI\lakes_Project.shp PROJCS['NAD_1983_StatePlane_North_Carolina_FIPS_3200_Feet',GEOGCS['GCS_North_American_1983',DATUM['D_North_American_1983',SPHEROID['GRS_1980',6378137.0,298.257222101]],PRIMEM['Greenwich',0.0],UNIT['Degree',0.0174532925199433]],PROJECTION['Lambert_Conformal_Conic'],PARAMETER['False_Easting',2000000.002616666],PARAMETER['False_Northing',0.0],PARAMETER['Central_Meridian',-79.0],PARAMETER['Standard_Parallel_1',34.33333333333334],PARAMETER['Standard_Parallel_2',36.16666666666666],PARAMETER['Latitude_Of_Origin',33.75],UNIT['Foot_US',0.3048006096012192]] #Intersect "lakes_Project '';Counties ''" R:\Gwen\DATA_SOURCES\ESRI\lakes_Project_Intersect1.shp ALL # INPUTCopyFeatures F:\TRANS_072712.gdb\TRANS_MPO_Landbase\Lakes "Database Connections\trans_gissrv10.sde\TRANS.MPO_Landbase\TRANS.Lakes" # 0 0 0CalculateField Lakes NAME "Boulding Branch" VB #CalculateField Lakes NAME "Deep River" VB #TRANS.Lakes002file://\\fps-dfs\links\GIS\Trans\Shared\MPO.gdbLocal Area NetworkProjectedGCS_North_American_1983NAD_1983_StatePlane_North_Carolina_FIPS_3200_Feet<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/10.0'><WKT>PROJCS["NAD_1983_StatePlane_North_Carolina_FIPS_3200_Feet",GEOGCS["GCS_North_American_1983",DATUM["D_North_American_1983",SPHEROID["GRS_1980",6378137.0,298.257222101]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION["Lambert_Conformal_Conic"],PARAMETER["False_Easting",2000000.002616666],PARAMETER["False_Northing",0.0],PARAMETER["Central_Meridian",-79.0],PARAMETER["Standard_Parallel_1",34.33333333333334],PARAMETER["Standard_Parallel_2",36.16666666666666],PARAMETER["Latitude_Of_Origin",33.75],UNIT["Foot_US",0.3048006096012192],AUTHORITY["EPSG",2264]]</WKT><XOrigin>-121841900</XOrigin><YOrigin>-93659000</YOrigin><XYScale>3048.0060960121905</XYScale><ZOrigin>0</ZOrigin><ZScale>1</ZScale><MOrigin>0</MOrigin><MScale>1</MScale><XYTolerance>0.00328083333333333</XYTolerance><ZTolerance>0.001</ZTolerance><MTolerance>0.001</MTolerance><HighPrecision>true</HighPrecision><WKID>2264</WKID></ProjectedCoordinateSystem>1.0Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 2; ESRI ArcCatalog 9.1.0.780enRepresents the major lakes, reservoirs, large rivers, lagoons, and estuaries in Davidson, Forsyth, Guilford, and Randolph counties.Provides a database of areal water features that identifies the water bodies or reaches that comprise the surface water drainage system.Largest scale when displaying the data: 1:24,000.20050401LakesLakesvector digital data2005ESRI® Data & Maps2005Redlands, California, USAESRIU.S. Geological Survey in cooperation with U.S. Environmental Protection AgencyESRICity of High Point DOT\\fps-dfs\links\GIS\GIServ\doc\pgdb_backup\gissrv2\TRANS_072712.gdbpublication date2004As needed-80.519715-79.53551336.26664735.5004881551926.5819611840631.510998640478.000389916403.390982NonepolygonlakesreservoirslagoonshydrographyinlandWatersHPMPONoneRandolph CountyNone20041994NoneThere is no guarantee of completeness, accuracy, or fitness of use.File GeoDatabase Feature ClassCITY OF HIGH POINT DEPARTMENT OF TRANSPORTATIONGIS PLANNERmailing and physical address
380 New York Street
RedlandsCalifornia92373-8100USA336-822-4792gwen.ford@highpointnc.gov8:00 a.m.–5:00 p.m. EST, Monday–FridayenFGDC Content Standards for Digital Geospatial MetadataFGDC-STD-001-1998local timeData TeamESRImailing and physical addressRedlandsCalifornia92373-8100
380 New York Street
USA909-793-2853909-793-5953info@esri.com8:00 a.m.–5:30 p.m. Pacific time, Monday–Friday20070920VectorSimple4FALSE0FALSEFALSEGCS_North_American_1983NAD_1983_StatePlane_North_Carolina_FIPS_3200_FeetNorth American Datum of 1983Geodetic Reference System 806378137.000000298.257222coordinate pairsurvey feet0.0010240.001024Explicit elevation coordinate included with horizontal coordinates0.000010TRANS.LakesFeature Class0The polygons represent the major lakes, reservoirs, large rivers, lagoons, and estuaries in the United States.ESRIObjectIDOBJECTIDInteger4100Internal feature number.ESRISequential unique whole numbers that are automatically generated.FID_lakes_FID_LAKES_Integer4100NAMENAMEString65The name of the water body.ESRINames for the features.00FTYPEFTYPEString24The feature type of the water body.ESRIU.S. Geological Survey in cooperation with U.S. Environmental Protection AgencyCANAL/DITCHThe areal water feature is a canal (2-dimensional) or ditch (2-dimensional).U.S. Geological Survey in cooperation with U.S. Environmental Protection AgencyICE MASSThe areal water feature is an ice mass.INUNDATION AREAU.S. Geological Survey in cooperation with U.S. Environmental Protection AgencyThe areal water feature is an inundation area.U.S. Geological Survey in cooperation with U.S. Environmental Protection AgencyLAKE/PONDThe areal water feature is a lake or pond.U.S. Geological Survey in cooperation with U.S. Environmental Protection AgencyPLAYAThe areal water feature is a playa.RESERVOIRU.S. Geological Survey in cooperation with U.S. Environmental Protection AgencyThe areal water feature is a reservoir.STREAM/RIVERU.S. Geological Survey in cooperation with U.S. Environmental Protection AgencyThe areal water feature is a stream (2-dimensional) or river (2-dimensional).SWAMP/MARSHU.S. Geological Survey in cooperation with U.S. Environmental Protection AgencyThe areal water feature is a swamp or marsh.00FCODEFCODEDouble8The feature code (five-digit) for the water body. The first three digits encode the feature type; the last two digits encode values for a set of characteristics associated with the feature.U.S. Geological Survey in cooperation with U.S. Environmental Protection AgencyThe National Hydrography Dataset, Concepts and Contents - Appendix B. Feature code and description field structures and definitionsU.S. Geological Survey in cooperation with U.S. Environmental Protection Agency388FCODE_DESCFCODE_DESCString65The description of the feature code for the water body.ESRIThe National Hydrography Dataset, Concepts and Contents - Appendix B. Feature code and description field structures and definitionsU.S. Geological Survey in cooperation with U.S. Environmental Protection Agency00SQKMSQKMDouble8The area of the water body in square kilometers.ESRICalculated areas for the features.388SQMISQMIDouble8The area of the water body in square miles.ESRICalculated areas for the features.388ShapeShapeGeometry4Feature geometry.ESRICoordinates defining the features.00FID_CountiFID_COUNTIInteger4100OBJECTID_1OBJECTID_1Integer4100AREA_AREA_Double8388COUNTYCOUNTYString2000COG_REGIONCOG_REGIONString2000MSAMSAString300CDBG_YRCDBG_YRSmallInteger250RPORPOString500Shape_LengSHAPE_LENGDouble8388County2COUNTY2String5000NightPopNIGHTPOPInteger4100DayPopDAYPOPInteger4100DayNightPoDAYNIGHTPOInteger4100OBJECTID_12OBJECTID_12OID4100Internal feature number.ESRISequential unique whole numbers that are automatically generated.Shape_Le_1SHAPE_LE_1Double8388SHAPE.AREASHAPE.AREADouble000SHAPE.LENSHAPE.LENDouble0000.0000.000SDCArcGIS® softwareThe SDC file contains the geospatial and attribute data. The SDI file contains the spatial and attribute indexes. The PRJ file contains the coordinate system information (optional). The XML file (*.sdc.xml) contains the metadata describing the data set (optional).DVD–ROM4.38GB (gigabytes)ISO 9660CD–ROM650MB (megabytes)ISO 9660Software purchase priceESRI Data & Maps is available only as part of ESRI® software.ESRI; ESRI International DistributorsIn the United States, contact the ESRI Telesales staff at 800-447-9778 for more information about our software and data.
Outside the United States, please direct all inquiries to your local ESRI International Distributor. This information can be found at http://gis.esri.com/intldist/contactint.cfm.mailing and physical address
380 New York Street
RedlandsCalifornia92373-8100USA800-447-9778To use this data requires software that supports SDC files.See use constraints.Offline DataNational Hydrography DatasetU.S. Geological Survey in cooperation with U.S. Environmental Protection Agency2004vector digital dataU.S. Geological SurveyReston, Virginia, USAThe tiles were downloaded in December 2004.
National Hydrography Dataset is an ongoing project with Alaska being worked on currently.http://nhd.usgs.gov/ftp://nhdftp.usgs.gov/SubRegions/Medium/100000online2004publication dateNHDAttribute and geospatial data1994-2004ARC/INFO®, ArcView® GIS 3Convert DLG [Digital Line Graph] data to features:
This process converted DLG data to features and associated characteristics and converted the coordinate system to geographic (longitude-latitude) coordinates in NAD83 in five steps:
1. The USGS's [U.S. Geological Survey] "Batch DLG-3 to DLG-F Conversion System" converted DLG-3 nodes, lines, areas, and associated attribute codes to temporary features and associated characteristics. Known conditions for which conversions could not be reliably made were flagged for later inspection. Only known conversion problems were flagged, and no additional steps were taken to detect or repair discrepancies in the original DLG-3 or the converted NHD [National Hydrography Dataset]. 2. A default value of a characteristic was added in cases where the description was incomplete. 3. All instances in which data were flagged were inspected and resolved interactively. 4. Feature delineation rules were applied to the temporary features in a batch process to create the final version of features. 5. Coordinate values were converted to geographic coordinates and to the NAD83 using the NADCON software version 2.1 (National Geodetic Survey, n.d.).
This process generated the "features" data.
Build reaches:
The basic steps for building reaches are as follows:
1. Convert RF3 [Reach File Version 3] to RF3" (RF3 double prime). This batch operation processed Reach File Version 3 to delete duplicate reaches, reassign reaches to the correct cataloging unit, validate geographic names assigned to reaches against data from the Geographic Names Information System (December 1996 extract), apply updates supplied by the States of California and Arizona, redelineate reaches on the basis of standards used for the NHD, and identify inflow/outflow points where transport reaches entered and exited waterbodies. 2. Create artificial paths. Using waterbodies from the feature data and inflow/outflow points extracted from RF3", this process automatically generated the centerlines used to delineate artificial paths within waterbodies by using subroutines within the ARC/INFO® GRID module. 3. Blind pass. This batch step conflated features and RF3" reaches and transferred reach information (reach code, reach date, name, stream level, and flow relationships) to the features. It also integrated the artificial paths generated in the previous step with the other features, built reaches on the artificial paths, and assigned geographic names (February 1995 extract) to waterbodies. 4. Quadrangle-based visual pass. During this interactive step, analysts ensured that the data developed in the previous batch processes conformed to reach delineation rules and that reaches were assigned to the appropriate cataloging unit. Batch procedures identified and developed a list of possible errors. (Errors not detected by the software may continue in the data.) Using the list, software presented each case to analysts to make appropriate edits to the data. Analysts recorded notes about repairs that could not be made and about other errors in the data. (These notes are encoded in the cataloging unit digital update units.) 5. Build superquads. After the quadrangle-based visual pass was complete, all quadrangles that cover all or part of each cataloging unit were paneled into a superquad. In this batch process, reaches that cross quad boundaries were corrected to conform to reach delineation rules. 6. Cataloging unit-based visual pass. As they did with the quadrangle-based visual pass, analysts ensured that reaches conformed to reach delineation rules. Batch procedures identified and developed a list of possible errors. (Errors not detected by the software may continue in the data.) Analysts examined each error and corrected the data. Analysts recorded notes about repairs that could not be made and about other errors in the data. (These notes are encoded in the cataloging unit digital update units.) 7. Central quality assurance/quality control. This step (1) confirmed that integrity checks were performed successfully during the visual pass activity, and (2) assessed statistics gathered during the earlier processes to determine if additional review of data was needed. A check of data from the cataloging unit-based visual pass was run in batch; any data that did not pass the procedure were reviewed interactively. If substantive changes were required, the data were reprocessed using procedures (as required) described in previous steps. The edited data then were rechecked using the central quality assurance/quality control process. 8. Data preparation and database load. This batch procedure performed final processing to the data emerging from the quality assurance/quality control step. Some of the activities included assigning the final reach codes, building waterbody reaches, adding final artificial paths in waterbodies, and implementing any recent changes in standards for the NHD. The spelling of geographic names was replaced using the March 1999 data extract from the Geographic Names Information System. After this, reaches, features, characteristics, geographic names, and relations were loaded into the database that holds the NHD. 9. Flow relation correction and validation. The flow relations were checked for consistency through a batch procedure, which generated a list of possible errors. Software presented possible errors to analysts, who corrected flow relations and, occasionally, the delineation of reaches. Changes were posted to the database. 10. Extract distribution copies of data. Data for a cataloging unit were extracted from the database and converted into an ARC/INFO® workspace containing coverages and other files. Data available in the Spatial Data Transfer Standard format were developed from the workspaces. The workspaces and the Spatial Data Transfer Standard-formatted files were made available to the public.
Modified flow relationships for a subbasin.
Updated stream level attributes based on flow relationships produced by the flow validation process. Stream level updates were based upon names for named reaches and the arbolate sum for unnamed reaches. Arbolate sum for any reach on the network is the sum of the lengths of all upstream reaches connected to that reach through flow relationships.
Modified Names: Added names to NHD reaches by comparing them to the GNIS [Geographic Names Information System] coordinates using ArcView NHD Tools.
Modified Flow Relationships using NHD ArcView Tools: Performed flow quality assurance/control and repaired flow relationships, as needed.
Modified Names using NHD ArcView Tools: Added names to NHD reaches and waterbodies by comparing them to the GNIS coordinates.
Replaced branched and disjoint (disconnected) reaches with linear reaches in NHDFlowline. This change occurred during the conversion to the geodatabase model. Each NHDFlowline that was part of a branched or disjoint reach was assigned to a new reach. The ComID of the NHDFlowline was unchanged. The change information from the old reach to the new reach was captured in the NHDReachCrossReference table. Each new reach has M values assigned from 0 to 100.
Merged and/or split area features (NHDWaterbody, NHDArea, region.wb, region.lm) and updated associated artificial path WBAreaComID (wb_com_id) values. This change occurred during the conversion to the geodatabase model. If adjacent or overlapping area features had identical classifications, including ReachCode where applicable, the features were merged. If an area feature exceeded 100 sq. km. (25 sq. km. for canal/ditch, stream/river, or submerged stream) and crossed a subbasin boundary, the feature was split at the subbasin boundary. If any sliver polygons of a size of less than 5 sq. km. adjoined the split features, the slivers were merged back into the larger area feature. Merged or split area features were assigned a new ComID.
Deleted name and GNIS Id values from NHD features where GNIS feature type is valley. This update, at the request of the GNIS staff, is to remove the possible application of a valley name (hypsographic feature) to a stream/river (hydrographic feature). In most instances, the valley name cannot be presumed to apply to the stream/river. Where the name does apply to the stream/river, the GNIS name must be updated from valley to a hydrographic feature type in order for the name to be valid in the NHD.NHDThe following steps were performed by ESRI: Downloaded the over 200 compressed files from ftp://nhdftp.usgs.gov/SubRegions/Medium/ and extracted them. Used all features from the NHDWaterbody source file of each NHD source tile. Used Canal/Ditch, Inundation Area, and Stream/River features from the NHDArea source file of each NHD source tile. Merged all NHD source tiles into a single data set. Replaced the numeric values with text strings for the attribute FTYPE. Merged and dissolved each of the Great Lakes and Great Salt Lake into single lake features and named them correctly. Added attributes SQKM and SQMI and calculated their values. Created ArcGIS® layer file (.lyr), projection file (.prj), and spatial indices.ArcView® GIS 3, ArcGIS® 9NHD20050329Projected ESRI data to State Plane, NAD 83. Clipped to MPO county boundaries.20060816ArcGIS 9.x200701Gwen Ford, GISMCity of High Point Department of TransportationGIS Planner336.822.4792gwen.ford@highpointnc.govUpdated ESRI data with High Point lakes and Randleman lake.20070105Gwen Ford, GISMCity of High Point Dept of TransportationGIS Planner336.822.4792gwen.ford@highpointnc.govArcGIS 9.x200701Metadata imported.C:\Documents and Settings\gwen\Desktop\lakesmd.xml20070105Randolph County Planning and Development1994Randleman LakeUnknownonlinegeospatial data1994publication dateCITY.LakesCity of High Point GIS1995Unknownstable-base material1995publication dategeospatial dataDataset copied.\\Tocfs5\root\Gwen\TrGIS\mpovector.mdb20070424Dataset copied.\\tocfs4\root\Gwen\TrGIS\MPOvector.gdb2009010215051900Dataset copied.Server=gissrv; Service=5151; Database=vector; User=sde; Version=SDE.DEFAULT2012072703325200The data set originally comes from several sources. Most of the data is from U.S. Geological Survey topographic quadrangle maps or sources that exceed its horizontal accuracy. These maps were compiled to meet National Map Accuracy Standards. For horizontal accuracy, this standard is met if at least 90 percent of points tested are within 0.02 inch (at map scale) of their true position. At 1:100,000 scale, 0.02 inch is approximately 167 feet (50.8 meters).No duplicate features are present. The shapefile is converted to SDC (Smart Data Compression) format in ArcSDE®. This verifies and validates the geometry.After processing, the data set is checked for drawing display and number of records and file sizes compared with source materials. Some of the cartographic disparities with this data, inherent in the original 1:100,000 source data, remain in that the density of features can change abruptly.
[From National Hydrography Dataset (NHD) documentation - The completeness of the data reflects the content of the sources, which, in the initial release of the National Hydrography Dataset, most often are U.S. Geological Survey topographic maps. Features found on the ground may have been eliminated or generalized on the source graphic because of scale and legibility constraints. In general, streams longer than one mile (approximately 1.6 kilometers) were collected. Most streams that flow from a lake were collected regardless of length. Only definite channels were collected so not all swamp/marsh features have stream/rivers delineated through them. Lake/ponds having an area greater than 6 acres (approximately 2.4 hectares) were collected. Note, however, that these general rules were applied unevenly among maps during compilation. Some map quadrangles have a much sparser pattern of hydrography than do adjoining maps and these differences continue in the digital rendition of these features. Transport reaches are defined on nearly all features of type stream/river, canal/ditch, artificial path, pipeline, and connector. Waterbody reaches are defined on the subset of lake/pond features that were identified as waterbodies during the development of Reach File Version 3. Most attention in applying geographic names was given to transport reaches that follow stream/rivers and waterbody reaches. Near the international boundaries with Canada and Mexico, only the parts of features within the United States are delineated. Detailed capture conditions are provided for every feature type in the Standards for National Hydrography Dataset (USGS, 1999), available online through http://geography.usgs.gov/standards/.]20120727Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 3; ESRI ArcGIS 10.0.0.2414HPMPO Lakes20052005040120050329Data TeamESRIData Team380 New York StreetRedlandsCalifornia92373-8100info@esri.comus909-793-2853909-793-5953U.S. Geological Survey in cooperation with U.S. Environmental Protection AgencyRestonVirginiaus200504011551926.5819611840631.510998916403.390982640478.00038912004-80.519715-79.53551336.26664735.5004881U.S. Water Bodies represents the major lakes, reservoirs, large rivers, lagoons, and estuaries in the United States.See legal constraints.The data are provided by multiple, third party data vendors under license to ESRI for inclusion on ESRI Data & Maps for use with ESRI® software. Each data vendor has its own data licensing policies and may grant varying redistribution rights to end users. Please consult the redistribution rights below for this data set provided on ESRI Data & Maps. As used herein, “Geodata” shall mean any digital data set consisting of geographic data coordinates and associated attributes.
The redistribution rights for this data set: Redistribution rights are granted by the data vendor for hard-copy renditions or static, electronic map images (e.g. .gif, .jpeg, etc.) that are plotted, printed, or publicly displayed with proper metadata and source/copyright attribution to the respective data vendor(s). Geodata is redistributable with a Value-Added Software Application developed by ESRI Business Partners on a royalty-free basis with proper metadata and source/copyright attribution to the respective data vendor(s). Geodata is redistributable without a Value-Added Software Application (i.e., adding the sample data to an existing, [non]commercial data set for redistribution) with proper metadata and source/copyright attribution to the respective data vendor(s).
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THE DATA AND RELATED MATERIALS ARE EXCLUDED FROM THE LIMITED WARRANTY, AND THE LICENSEE EXPRESSLY ACKNOWLEDGES THAT THE DATA CONTAINS SOME NONCONFORMITIES, DEFECTS, OR ERRORS. ESRI DOES NOT WARRANT THAT THE DATA WILL MEET LICENSEE'S NEEDS OR EXPECTATIONS; THAT THE USE OF THE DATA WILL BE UNINTERRUPTED; OR THAT ALL NONCONFORMITIES, DEFECTS, OR ERRORS CAN OR WILL BE CORRECTED. ESRI IS NOT INVITING RELIANCE ON THIS DATA, AND THE LICENSEE SHOULD ALWAYS VERIFY ACTUAL DATA.
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IN NO EVENT SHALL ESRI AND/OR ITS LICENSOR(S) BE LIABLE FOR COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOST PROFITS, LOST SALES, OR BUSINESS EXPENDITURES, INVESTMENTS, OR COMMITMENTS IN CONNECTION WITH ANY BUSINESS; LOSS OF ANY GOODWILL; OR FOR ANY INDIRECT, SPECIAL, INCIDENTAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT OR USE OF THE DATA AND RELATED MATERIALS, HOWEVER CAUSED, ON ANY THEORY OF LIABILITY, AND WHETHER OR NOT ESRI OR ITS LICENSOR(S) HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. THESE LIMITATIONS SHALL APPLY NOTWITHSTANDING ANY FAILURE OF ESSENTIAL PURPOSE OF ANY EXCLUSIVE REMEDY.
Third Party Beneficiary: ESRI's licensor(s) has (have) authorized ESRI to (sub)distribute and (sub)license its (their) data as incorporated into the Data and Related Materials. As an intended third party beneficiary to this Agreement, the ESRI licensor(s) is (are) entitled to directly enforce, in its own name, the rights and obligations undertaken by the Licensee and to seek all legal and equitable remedies as are afforded to ESRI.
In the event that the data vendor(s) has (have) granted the end user permission to redistribute the Geodata, please use proper proprietary or copyright attribution for the various data vendor(s), and provide the associated metadata file(s) with the Geodata. In compliance with FGDC metadata standards, ESRI has attempted to practice proper metadata methodologies by providing any data source information, descriptions, and file names to assist in this effort.100000polygon, lakes, reservoirs, lagoons, hydrography, inlandWatersUnited States2004Data TeamESRIData Team909-793-2853909-793-5953380 New York StreetRedlandsCalifornia92373-8100usinfo@esri.compolygonlakesreservoirslagoonshydrographyinlandWatersUnited States2004ISO 19115 Geographic Information - MetadataDIS_ESRI1.0dataset002file://\\fps-dfs\links\GIS\GIServ\doc\pgdb_backup\gissrv2\TRANS_072712.gdbLocal Area Network0.000Personal GeoDatabase Feature ClassESRI; ESRI International Distributors380 New York StreetRedlandsCalifornia92373-8100us800-447-9778ESRI Data & Maps is available only as part of ESRI® software.
In the United States, contact the ESRI Telesales staff at 800-447-9778 for more information about our software and data.
Outside the United States, please direct all inquiries to your local ESRI International Distributor. This information can be found at http://gis.esri.com/intldist/contactint.cfm.Software purchase price. ESRI Data & Maps is available only as part of ESRI® software. To use this data requires software that supports SDC files.SDE Feature ClassNAD_1983_StatePlane_North_Carolina_FIPS_3200_FeetEPSG7.4.101056
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Data TeamESRIData Team380 New York StreetRedlandsCalifornia92373-8100info@esri.comus909-793-2853909-793-5953NHD (source 1 of 1) U.S. Geological Survey in cooperation with U.S. Environmental Protection Agency, 2004, National Hydrography Dataset: U.S. Geological Survey, Reston, Virginia, USA. Online links: http://nhd.usgs.gov/ ftp://nhdftp.usgs.gov/SubRegions/Medium/ Other citation details: The tiles were downloaded in December 2004. National Hydrography Dataset is an ongoing project with Alaska being worked on currently.
Type of source media: online
Source scale denominator: 100000
Source contribution:
Attribute and geospatial data
Date: 1994-2004 (change 1 of 2) Convert DLG [Digital Line Graph] data to features:
This process converted DLG data to features and associated characteristics and converted the coordinate system to geographic (longitude-latitude) coordinates in NAD83 in five steps:
1. The USGS's [U.S. Geological Survey] "Batch DLG-3 to DLG-F Conversion System" converted DLG-3 nodes, lines, areas, and associated attribute codes to temporary features and associated characteristics. Known conditions for which conversions could not be reliably made were flagged for later inspection. Only known conversion problems were flagged, and no additional steps were taken to detect or repair discrepancies in the original DLG-3 or the converted NHD [National Hydrography Dataset]. 2. A default value of a characteristic was added in cases where the description was incomplete. 3. All instances in which data were flagged were inspected and resolved interactively. 4. Feature delineation rules were applied to the temporary features in a batch process to create the final version of features. 5. Coordinate values were converted to geographic coordinates and to the NAD83 using the NADCON software version 2.1 (National Geodetic Survey, n.d.).
This process generated the "features" data.
Build reaches:
The basic steps for building reaches are as follows:
1. Convert RF3 [Reach File Version 3] to RF3" (RF3 double prime). This batch operation processed Reach File Version 3 to delete duplicate reaches, reassign reaches to the correct cataloging unit, validate geographic names assigned to reaches against data from the Geographic Names Information System (December 1996 extract), apply updates supplied by the States of California and Arizona, redelineate reaches on the basis of standards used for the NHD, and identify inflow/outflow points where transport reaches entered and exited waterbodies. 2. Create artificial paths. Using waterbodies from the feature data and inflow/outflow points extracted from RF3", this process automatically generated the centerlines used to delineate artificial paths within waterbodies by using subroutines within the ARC/INFO® GRID module. 3. Blind pass. This batch step conflated features and RF3" reaches and transferred reach information (reach code, reach date, name, stream level, and flow relationships) to the features. It also integrated the artificial paths generated in the previous step with the other features, built reaches on the artificial paths, and assigned geographic names (February 1995 extract) to waterbodies. 4. Quadrangle-based visual pass. During this interactive step, analysts ensured that the data developed in the previous batch processes conformed to reach delineation rules and that reaches were assigned to the appropriate cataloging unit. Batch procedures identified and developed a list of possible errors. (Errors not detected by the software may continue in the data.) Using the list, software presented each case to analysts to make appropriate edits to the data. Analysts recorded notes about repairs that could not be made and about other errors in the data. (These notes are encoded in the cataloging unit digital update units.) 5. Build superquads. After the quadrangle-based visual pass was complete, all quadrangles that cover all or part of each cataloging unit were paneled into a superquad. In this batch process, reaches that cross quad boundaries were corrected to conform to reach delineation rules. 6. Cataloging unit-based visual pass. As they did with the quadrangle-based visual pass, analysts ensured that reaches conformed to reach delineation rules. Batch procedures identified and developed a list of possible errors. (Errors not detected by the software may continue in the data.) Analysts examined each error and corrected the data. Analysts recorded notes about repairs that could not be made and about other errors in the data. (These notes are encoded in the cataloging unit digital update units.) 7. Central quality assurance/quality control. This step (1) confirmed that integrity checks were performed successfully during the visual pass activity, and (2) assessed statistics gathered during the earlier processes to determine if additional review of data was needed. A check of data from the cataloging unit-based visual pass was run in batch; any data that did not pass the procedure were reviewed interactively. If substantive changes were required, the data were reprocessed using procedures (as required) described in previous steps. The edited data then were rechecked using the central quality assurance/quality control process. 8. Data preparation and database load. This batch procedure performed final processing to the data emerging from the quality assurance/quality control step. Some of the activities included assigning the final reach codes, building waterbody reaches, adding final artificial paths in waterbodies, and implementing any recent changes in standards for the NHD. The spelling of geographic names was replaced using the March 1999 data extract from the Geographic Names Information System. After this, reaches, features, characteristics, geographic names, and relations were loaded into the database that holds the NHD. 9. Flow relation correction and validation. The flow relations were checked for consistency through a batch procedure, which generated a list of possible errors. Software presented possible errors to analysts, who corrected flow relations and, occasionally, the delineation of reaches. Changes were posted to the database. 10. Extract distribution copies of data. Data for a cataloging unit were extracted from the database and converted into an ARC/INFO® workspace containing coverages and other files. Data available in the Spatial Data Transfer Standard format were developed from the workspaces. The workspaces and the Spatial Data Transfer Standard-formatted files were made available to the public.
Modified flow relationships for a subbasin.
Updated stream level attributes based on flow relationships produced by the flow validation process. Stream level updates were based upon names for named reaches and the arbolate sum for unnamed reaches. Arbolate sum for any reach on the network is the sum of the lengths of all upstream reaches connected to that reach through flow relationships.
Modified Names: Added names to NHD reaches by comparing them to the GNIS [Geographic Names Information System] coordinates using ArcView NHD Tools.
Modified Flow Relationships using NHD ArcView Tools: Performed flow quality assurance/control and repaired flow relationships, as needed.
Modified Names using NHD ArcView Tools: Added names to NHD reaches and waterbodies by comparing them to the GNIS coordinates.
Replaced branched and disjoint (disconnected) reaches with linear reaches in NHDFlowline. This change occurred during the conversion to the geodatabase model. Each NHDFlowline that was part of a branched or disjoint reach was assigned to a new reach. The ComID of the NHDFlowline was unchanged. The change information from the old reach to the new reach was captured in the NHDReachCrossReference table. Each new reach has M values assigned from 0 to 100.
Merged and/or split area features (NHDWaterbody, NHDArea, region.wb, region.lm) and updated associated artificial path WBAreaComID (wb_com_id) values. This change occurred during the conversion to the geodatabase model. If adjacent or overlapping area features had identical classifications, including ReachCode where applicable, the features were merged. If an area feature exceeded 100 sq. km. (25 sq. km. for canal/ditch, stream/river, or submerged stream) and crossed a subbasin boundary, the feature was split at the subbasin boundary. If any sliver polygons of a size of less than 5 sq. km. adjoined the split features, the slivers were merged back into the larger area feature. Merged or split area features were assigned a new ComID.
Deleted name and GNIS Id values from NHD features where GNIS feature type is valley. This update, at the request of the GNIS staff, is to remove the possible application of a valley name (hypsographic feature) to a stream/river (hydrographic feature). In most instances, the valley name cannot be presumed to apply to the stream/river. Where the name does apply to the stream/river, the GNIS name must be updated from valley to a hydrographic feature type in order for the name to be valid in the NHD.
Data sources produced in this process: NHD Date: 20050329 (change 2 of 2) The following steps were performed by ESRI: Downloaded the over 200 compressed files from ftp://nhdftp.usgs.gov/SubRegions/Medium/ and extracted them. Used all features from the NHDWaterbody source file of each NHD source tile. Used Canal/Ditch, Inundation Area, and Stream/River features from the NHDArea source file of each NHD source tile. Merged all NHD source tiles into a single data set. Replaced the numeric values with text strings for the attribute FTYPE. Merged and dissolved each of the Great Lakes and Great Salt Lake into single lake features and named them correctly. Added attributes SQKM and SQMI and calculated their values. Created ArcGIS® layer file (.lyr), projection file (.prj), and spatial indices.
Data sources used in this process: NHD{ECD145FA-E2F9-4DB3-8313-2B012965748E}