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8:00 AM to 4:00 PM Metadata information can also be obtained through online services using The National Map Viewer, at http://nationalmap.usgs.gov or EarthExplorer, at http://earthexplorer.usgs.gov or Ask USGS at http://www.usgs.gov/ask. ArcGIS Metadata 1.0 U.S. Geological Survey, National Geospatial Technical Operations Center 1-888-ASK-USGS (1-888-275-8747) Box 25046 Denver Federal Center Lakewood CO 80225 http://www.usgs.gov/ask/ Monday through Friday 8:00 AM to 4:00 PM Metadata information can also be obtained through online services using The National Map Viewer, at http://nationalmap.usgs.gov or EarthExplorer, at http://earthexplorer.usgs.gov or Ask USGS at http://www.usgs.gov/ask. None FileGDB 10.1 10.1 No compression applied Spatial objects with unique identifiers and coordinate data. 151828740 https://prd-tnm.s3.amazonaws.com/StagedProducts/Hydrography/NHD/HU4/HighResolution/GDB/NHD_H_0301_HU4_GDB.zip File Geodatabase Feature Class NHDWaterbody - Virginia and APNEP portion of North Carolina 2021-09-18T00:00:00 U.S. Geological Survey, National Geospatial Program U.S. Geological Survey Reston, VA vector digital data <DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>The National Hydrography Dataset (NHD) is a feature-based database that interconnects and uniquely identifies the stream segments or reaches that make up the nation's surface water drainage system. NHD data was originally developed at 1:100,000-scale and exists at that scale for the whole country. This high-resolution NHD, generally developed at 1:24,000/1:12,000 scale, adds detail to the original 1:100,000-scale NHD. (Data for Alaska, Puerto Rico and the Virgin Islands was developed at high-resolution, not 1:100,000 scale.) Local resolution NHD is being developed where partners and data exist. The NHD contains reach codes for networked features, flow direction, names, and centerline representations for areal water bodies. Reaches are also defined on waterbodies and the approximate shorelines of the Great Lakes, the Atlantic and Pacific Oceans and the Gulf of Mexico. The NHD also incorporates the National Spatial Data Infrastructure framework criteria established by the Federal Geographic Data Committee.</SPAN></P></DIV></DIV></DIV> The NHD is a national framework for assigning reach addresses to water-related entities, such as industrial discharges, drinking water supplies, fish habitat areas, wild and scenic rivers. Reach addresses establish the locations of these entities relative to one another within the NHD surface water drainage network, much like addresses on streets. Once linked to the NHD by their reach addresses, the upstream/downstream relationships of these water-related entities--and any associated information about them--can be analyzed using software tools ranging from spreadsheets to geographic information systems (GIS). GIS can also be used to combine NHD-based network analysis with other data layers, such as soils, land use and population, to help understand and display their respective effects upon one another. Furthermore, because the NHD provides a nationally consistent framework for addressing and analysis, water-related information linked to reach addresses by one organization (national, state, local) can be shared with other organizations and easily integrated into many different types of applications to the benefit of all. https://prd-tnm.s3.amazonaws.com/StagedProducts/Hydrography/NHD/HU4/HighResolution/GDB/NHD_H_0301_HU4_GDB.jpg Thumbnail JPG image JPEG Geographic Names Information System Gates County Salem County Chesapeake County Patrick County Craig County Rockingham County Bertie County Campbell County Stokes County Pasquotank County Perquimans County Charlotte County Isle of Wight County Warren County Chowan County Appomattox County Martin County Washington County Vance County Alamance County Hyde County Prince Edward County Hertford County Forsyth County Beaufort County United States Danville County VA Tyrrell County Montgomery County Brunswick County Sussex County Martinsville County Floyd County Granville County Carroll County Mecklenburg County Currituck County Suffolk County Dinwiddie County Guilford County North Carolina Pittsylvania County NC Petersburg County Prince George County Virginia Beach County Virginia Orange County Edgecombe County Lunenburg County Henry County Bedford County Surry County Nottoway County Franklin County HU4_0301 Emporia County Halifax County Greensville County Caswell County Botetourt County Person County Southampton County US Northampton County Camden County Roanoke County Dare County Geographic Names Information System United States US Geospatial Platform Hydrography ngda Hydrographic WBD Gate ForeShore Sub-region dams National Hydrography Dataset (NHD) Best Resolution Line Bridge Basin Subwatershed HU16 Underground Conduit HUC Hydrologic Unit Code Inundation Area surface water systems Rock lakes Well Reach code HU14 Wash Spillway Bay/Inlet Gaging Station Hazard Zone HU2 Nonearthen Shore artificial path Watershed Sub-basin Region Hydrologic Units Coastline Stream/River Canal/Ditch Flow direction network rivers Boundaries PointEvent Sea/Ocean Wall Connector Reach Water Intake Outflow Point HU10 HU4 Area of Complex Channels boundaries Waterfall Watershed Boundary Dataset Playa Marsh Subbasin Watershed Boundaries drainage systems and characteristics HU12 HU6 Swamp HU-4 Subregion Orthoimage Sink/Rise stream Estuary Lock Chamber Subregion Administrative watershed units Reef Ice mass Tunnel Reservoir Levee Drainage areas for surface water Sounding Datum Line Boundary Rapids Pond Special Use Zone Limit Hydrography Special Use Zone Flume Dam/Weir Topographic FileGDB 10.1 HU8 Area to be submerged Submerged Stream ISO 19115 Topic Category inlandWaters Hydrographic North Carolina Virginia Stream / Water Canal / Ditch US Hydrography Lake / Pond FWHydrography Swamp / Marsh Reach Code Artificial Path Reservoir Spring / Seep NHD High Resolution No liability for content or accuracy is presumed by USGS for data. <DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>None. However, users should be aware that temporal changes may have occurred since this data set was collected and that some parts of this data may no longer represent actual surface conditions. Users should not use this data for critical applications without a full awareness of its limitations. Acknowledgment of the U.S. Geological Survey would be appreciated for products derived from these data.</SPAN></P></DIV></DIV></DIV> publication date 1988-01-01T00:00:00 2012-01-01T00:00:00 0.000000 0.000000 -80.518300552 -75.3980994039999 35.1816736370001 37.5210349640001 0.000000 0.000000 This data comprises hydrological data, including flow lines, water bodies and water features. Albemarle-Pamlico National Estuary Partnership (APNEP) management area Version 6.2 (Build 9200) ; Esri ArcGIS 10.6.1.9270 1 -83.725337 -75.217082 39.503722 34.587897 Last metadata review date: 20130216 Points, nodes, lines, and areas conform to topological rules. Lines intersect only at nodes, and all nodes anchor the ends of lines. Lines do not overshoot or undershoot other lines where they are supposed to meet. There are no duplicate lines. Lines bound areas and lines identify the areas to the left and right of the lines. Gaps and overlaps among areas do not exist. All areas close. Points, nodes, lines, and areas conform to topological rules. Lines intersect only at nodes, and all nodes anchor the ends of lines. Lines do not overshoot or undershoot other lines where they are supposed to meet. There are no duplicate lines. Lines bound areas and lines identify the areas to the left and right of the lines. Gaps and overlaps among areas do not exist. All areas close. The completeness of the data reflects the content of the sources, which most often are the published USGS topographic quadrangle and/or the USDA Forest Service Primary Base Series (PBS) map. The USGS topographic quadrangle is usually supplemented by Digital Orthophoto Quadrangles (DOQs). Features found on the ground may have been eliminated or generalized on the source map 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 their 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 were collected. Note, however, that these general rules were applied unevenly among maps during compilation. Reach codes are defined on all features of type stream/river, canal/ditch, artificial path, coastline, and connector. Waterbody reach codes are defined on all lake/pond and most reservoir features. Names were applied from the GNIS database. Detailed capture conditions are provided for every feature type in the Standards for National Hydrography Dataset available online through http://mapping.usgs.gov/standards/. Statements of attribute accuracy are based on accuracy statements made for U.S. Geological Survey Digital Line Graph (DLG) data, which is estimated to be 98.5 percent. One or more of the following methods were used to test attribute accuracy: manual comparison of the source with hardcopy plots; symbolized display of the DLG on an interactive computer graphic system; selected attributes that could not be visually verified on plots or on screen were interactively queried and verified on screen. In addition, software validated feature types and characteristics against a master set of types and characteristics, checked that combinations of types and characteristics were valid, and that types and characteristics were valid for the delineation of the feature. Feature types, characteristics, and other attributes conform to the Standards for National Hydrography Dataset (USGS, 1999) as of the date they were loaded into the database. All names were validated against a current extract from the Geographic Names Information System (GNIS). The entry and identifier for the names match those in the GNIS. The association of each name to reaches has been interactively checked, however, operator error could in some cases apply a name to a wrong reach. Statements of horizontal positional accuracy are based on accuracy statements made for U.S. Geological Survey topographic quadrangle maps. 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 the true position. Additional offsets to positions may have been introduced where feature density is high to improve the legibility of map symbols. In addition, the digitizing of maps is estimated to contain a horizontal positional error of less than or equal to 0.003 inch standard error (at map scale) in the two component directions relative to the source maps. Visual comparison between the map graphic (including digital scans of the graphic) and plots or digital displays of points, lines, and areas, is used as control to assess the positional accuracy of digital data. Digital map elements along the adjoining edges of data sets are aligned if they are within a 0.02 inch tolerance (at map scale). Features with like dimensionality (for example, features that all are delineated with lines), with or without like characteristics, that are within the tolerance are aligned by moving the features equally to a common point. Features outside the tolerance are not moved; instead, a feature of type connector is added to join the features. Statements of vertical positional accuracy for elevation of water surfaces are based on accuracy statements made for U.S. Geological Survey topographic quadrangle maps. These maps were compiled to meet National Map Accuracy Standards. For vertical accuracy, this standard is met if at least 90 percent of well-defined points tested are within one-half contour interval of the correct value. Elevations of water surface printed on the published map meet this standard; the contour intervals of the maps vary. These elevations were transcribed into the digital data; the accuracy of this transcription was checked by visual comparison between the data and the map. Hydrography features and feature names 24000 Hydrography Hydrography 2021-09-18 U.S. Geological Survey in cooperation with U.S. Environmental Protection Agency, USDA Forest Service, and other Federal, State and local partners. National Hydrography Dataset is a component of a comprehensive base geospatial data model. vector digital data The National Hydrography Dataset (NHD) is a feature-based database that interconnects and uniquely identifies the stream segments or reaches that make up the nation's surface water drainage system. The high-resolution NHD was originally created using 1:24,000-scale data. State and Local Stewards are improving the data by incorporating local updates based on more current and more accurate source data. Water features in the real world are relatively dynamic and the differences at the time of data collection mean that water features may not register exactly to other layers. The hydrographic feature names contained in and displayed by the NHD are extracted and validated from the Geographic Names Information System (GNIS). Spatial objects may be filtered or generalized to achieve a 1:24,000-scale representation. http://nhd.usgs.gov/gnis.html http://nhd.usgs.gov/ http://nhdgeo.usgs.gov/metadata/nhd_high.htm publication date 2010-08-20 2010-08-20 U.S. Geological Survey 24000 Watershed Boundary Dataset (WBD) Watershed Boundary Dataset 2021-09-18 U.S. Geological Survey, National Geospatial Technical Operations Center vector digital data The Watershed Boundary Dataset (WBD) defines the areal extent of surface water drainage to a point, accounting for all land and surface areas. Watershed Boundaries are determined solely upon science-based hydrologic principles, not favoring any administrative boundaries or special projects, nor particular program or agency. The intent of defining Hydrologic Units (HU) for the Watershed Boundary Dataset is to establish a base-line drainage boundary framework, accounting for all land and surface areas. Hydrologic units are given a Hydrologic Unit Code (HUC). For example, a hydrologic region has a 2-digit HUC. A HUC describes where the unit is in the country and the level of the unit. http://nhd.usgs.gov/wbd.html publication date 1972-01-01 2012-01-01 Hydrography features and gaging stations 24000 Gaging Stations Hydrography - Gaging Stations 2021-09-18 Global Land Ice Measurements from Space initiative (GLIMS) vector digital data This dataset, termed "GAGES II", an acronym for Geospatial Attributes of Gages for Evaluating Streamflow, version II, provides geospatial data and classifications for 9,322 stream gages maintained by the U.S. Geological Survey (USGS). It is an update to the original GAGES in 2010. The GAGES II dataset consists of gages which have had either 20+ complete years (not necessarily continuous) of discharge record since 1950, or are currently active, as of water year 2009, and whose watersheds lie within the United States, including Alaska, Hawaii, and Puerto Rico. Only active stations, as identified by the GAGES II dataset, are symbolized. http://water.usgs.gov/lookup/getspatial?gagesII_Sept2011 http://water.usgs.gov/GIS/metadata/usgswrd/XML/gagesII_Sept2011.xml publication date New reaches were assigned reach code values that are sequentially ordered to 2-D and then 1-D reaches. New high-res reach codes are larger than any existing med-res reach code in the associated Catalog Unit. Additional Geographic Names that exist in the Geographic Names Information System (GNIS) were added to reaches in the high-res dataset. Names for the high-res drainage network were interactively transferred from the vector GNIS coverage. Additional GNIS names for point and water body features were also added. 2021-09-18T00:00:00 NHD High Resolution data for 14 4-digit hydrologic units were downloaded using the National Map Downloader on 11/30/2021. The layers (NHDArea, NHDFlowline, NHDLine, NHDPoint,and NHDWaterbody) for each HUC were appended to create one feature layer for each type and then clipped using a 5km buffer around Virginia and the Albemarle-Pamlico National Estuary Partnership (APNEP) management boundary in North Carolina. HUCs used: 0204, 0205, 0206, 0207, 0208, 0301, 0302, 0303, 0304, 0502, 0505, 0507, 0513, 0601. 2021-12-02T00:00:00 All feature types, characteristics, and values are in U.S. Geological Survey, 1999, Standards for National Hydrography Dataset: Reston, Virginia, U.S. Geological Survey. The document is available online through http://nationalmap.gov/standards/nhdstds.html. Information about tables and fields in the data are available from the user documentation for the National Hydrography Dataset available online through http://nhd.usgs.gov/documentation.html. NHD_Waterbody_VA_NCAPNEP_downloaded_Nov2021_clipped_wm Feature Class 143787 OBJECTID OBJECTID OID 4 0 0 Internal feature number. Esri Sequential unique whole numbers that are automatically generated. SHAPE Shape Geometry 0 0 0 Feature geometry. Esri Coordinates defining the features. permanent_identifier Permanent_Identifier String 40 0 0 A 40-character globally unique ID (GUID) value that uniquely identifies the occurrence of each feature or event in The National Map. https://usgs-mrs.cr.usgs.gov/SPECX/lookup/lookupSearch?reportType=Data+Dictionary&tnmTheme=2&layer=-1&editionSpecification=-1&scale=-1&table=1&submit=Submit&__ncforminfo=h4OBpM3FxcWLQAJnupg6q-Eam1QNhwhiu9JycvLCbo_9J1awStQSWe05vJtkESt4hjoRO5W7jwgkTFx8tTCcgJa9Vs5fN2Z7SXcIqK7AWG5YMM_1RhCnb3Fs3WINxWLopWSdmMbvMB2XdSLnHP8gHMU7I63hzF6Ephn_nhDcHUa8Y3A68ypO0NNdoXlMYL5c1e4BU0FeFkSYeBZKdjwZB1vJnT3Xg0BxFx3tmdIjJI-oTXERlscY2rpWhocjrA9eyqfkYfpkqT9_AB0vb7xtiEohFHouZTxG6401HBzN-Ppl4t0HK8_2grdA5TdDiUf95KODtDxs2QM-k4-5HFdpq0if3VaOBsj2_qY83iy0ZwEwmzBZKtC0upMxB8m8smU1HBF-KLo2sEwSKygUx4sswSJLD2FXbDH0WkKEvsH6EpacDOeEh62dcQ%3D%3D fdate FDate Date 8 0 0 Date of last feature modification. https://usgs-mrs.cr.usgs.gov/SPECX/lookup/lookupSearch?reportType=Data+Dictionary&tnmTheme=2&layer=-1&editionSpecification=-1&scale=-1&table=1&submit=Submit&__ncforminfo=h4OBpM3FxcWLQAJnupg6q-Eam1QNhwhiu9JycvLCbo_9J1awStQSWe05vJtkESt4hjoRO5W7jwgkTFx8tTCcgJa9Vs5fN2Z7SXcIqK7AWG5YMM_1RhCnb3Fs3WINxWLopWSdmMbvMB2XdSLnHP8gHMU7I63hzF6Ephn_nhDcHUa8Y3A68ypO0NNdoXlMYL5c1e4BU0FeFkSYeBZKdjwZB1vJnT3Xg0BxFx3tmdIjJI-oTXERlscY2rpWhocjrA9eyqfkYfpkqT9_AB0vb7xtiEohFHouZTxG6401HBzN-Ppl4t0HK8_2grdA5TdDiUf95KODtDxs2QM-k4-5HFdpq0if3VaOBsj2_qY83iy0ZwEwmzBZKtC0upMxB8m8smU1HBF-KLo2sEwSKygUx4sswSJLD2FXbDH0WkKEvsH6EpacDOeEh62dcQ%3D%3D resolution Resolution Integer 4 0 0 Source resolution. https://usgs-mrs.cr.usgs.gov/SPECX/lookup/lookupSearch?reportType=Data+Dictionary&tnmTheme=2&layer=-1&editionSpecification=-1&scale=-1&table=1&submit=Submit&__ncforminfo=h4OBpM3FxcWLQAJnupg6q-Eam1QNhwhiu9JycvLCbo_9J1awStQSWe05vJtkESt4hjoRO5W7jwgkTFx8tTCcgJa9Vs5fN2Z7SXcIqK7AWG5YMM_1RhCnb3Fs3WINxWLopWSdmMbvMB2XdSLnHP8gHMU7I63hzF6Ephn_nhDcHUa8Y3A68ypO0NNdoXlMYL5c1e4BU0FeFkSYeBZKdjwZB1vJnT3Xg0BxFx3tmdIjJI-oTXERlscY2rpWhocjrA9eyqfkYfpkqT9_AB0vb7xtiEohFHouZTxG6401HBzN-Ppl4t0HK8_2grdA5TdDiUf95KODtDxs2QM-k4-5HFdpq0if3VaOBsj2_qY83iy0ZwEwmzBZKtC0upMxB8m8smU1HBF-KLo2sEwSKygUx4sswSJLD2FXbDH0WkKEvsH6EpacDOeEh62dcQ%3D%3D gnis_id GNIS_ID String 10 0 0 A permanent, unique number assigned by the Geographic Names Information System (GNIS) to a geographic feature name for the sole purpose of uniquely identifying that name application as a record in any information system database, dataset, file, or document https://usgs-mrs.cr.usgs.gov/SPECX/lookup/lookupSearch?reportType=Data+Dictionary&tnmTheme=2&layer=-1&editionSpecification=-1&scale=-1&table=1&submit=Submit&__ncforminfo=h4OBpM3FxcWLQAJnupg6q-Eam1QNhwhiu9JycvLCbo_9J1awStQSWe05vJtkESt4hjoRO5W7jwgkTFx8tTCcgJa9Vs5fN2Z7SXcIqK7AWG5YMM_1RhCnb3Fs3WINxWLopWSdmMbvMB2XdSLnHP8gHMU7I63hzF6Ephn_nhDcHUa8Y3A68ypO0NNdoXlMYL5c1e4BU0FeFkSYeBZKdjwZB1vJnT3Xg0BxFx3tmdIjJI-oTXERlscY2rpWhocjrA9eyqfkYfpkqT9_AB0vb7xtiEohFHouZTxG6401HBzN-Ppl4t0HK8_2grdA5TdDiUf95KODtDxs2QM-k4-5HFdpq0if3VaOBsj2_qY83iy0ZwEwmzBZKtC0upMxB8m8smU1HBF-KLo2sEwSKygUx4sswSJLD2FXbDH0WkKEvsH6EpacDOeEh62dcQ%3D%3D GNIS_ID = "null" if no name is associated with the feature. Removed from WBD as of version 2.3 schema. gnis_name GNIS_Name String 65 0 0 The Geographic Names Information System (GNIS) assigned proper name, specific term, or expression by which a particular geographic entity is known. https://usgs-mrs.cr.usgs.gov/SPECX/lookup/lookupSearch?reportType=Data+Dictionary&tnmTheme=2&layer=-1&editionSpecification=-1&scale=-1&table=1&submit=Submit&__ncforminfo=h4OBpM3FxcWLQAJnupg6q-Eam1QNhwhiu9JycvLCbo_9J1awStQSWe05vJtkESt4hjoRO5W7jwgkTFx8tTCcgJa9Vs5fN2Z7SXcIqK7AWG5YMM_1RhCnb3Fs3WINxWLopWSdmMbvMB2XdSLnHP8gHMU7I63hzF6Ephn_nhDcHUa8Y3A68ypO0NNdoXlMYL5c1e4BU0FeFkSYeBZKdjwZB1vJnT3Xg0BxFx3tmdIjJI-oTXERlscY2rpWhocjrA9eyqfkYfpkqT9_AB0vb7xtiEohFHouZTxG6401HBzN-Ppl4t0HK8_2grdA5TdDiUf95KODtDxs2QM-k4-5HFdpq0if3VaOBsj2_qY83iy0ZwEwmzBZKtC0upMxB8m8smU1HBF-KLo2sEwSKygUx4sswSJLD2FXbDH0WkKEvsH6EpacDOeEh62dcQ%3D%3D areasqkm AreaSqKm Double 8 0 0 Area of feature in square kilometers based on Albers Equal Area projection. https://usgs-mrs.cr.usgs.gov/SPECX/lookup/lookupSearch?reportType=Data+Dictionary&tnmTheme=2&layer=-1&editionSpecification=-1&scale=-1&table=1&submit=Submit&__ncforminfo=h4OBpM3FxcWLQAJnupg6q-Eam1QNhwhiu9JycvLCbo_9J1awStQSWe05vJtkESt4hjoRO5W7jwgkTFx8tTCcgJa9Vs5fN2Z7SXcIqK7AWG5YMM_1RhCnb3Fs3WINxWLopWSdmMbvMB2XdSLnHP8gHMU7I63hzF6Ephn_nhDcHUa8Y3A68ypO0NNdoXlMYL5c1e4BU0FeFkSYeBZKdjwZB1vJnT3Xg0BxFx3tmdIjJI-oTXERlscY2rpWhocjrA9eyqfkYfpkqT9_AB0vb7xtiEohFHouZTxG6401HBzN-Ppl4t0HK8_2grdA5TdDiUf95KODtDxs2QM-k4-5HFdpq0if3VaOBsj2_qY83iy0ZwEwmzBZKtC0upMxB8m8smU1HBF-KLo2sEwSKygUx4sswSJLD2FXbDH0WkKEvsH6EpacDOeEh62dcQ%3D%3D Computed. elevation Elevation Double 8 0 0 The vertical distance from a given datum. https://usgs-mrs.cr.usgs.gov/SPECX/lookup/lookupSearch?reportType=Data+Dictionary&tnmTheme=2&layer=-1&editionSpecification=-1&scale=-1&table=1&submit=Submit&__ncforminfo=h4OBpM3FxcWLQAJnupg6q-Eam1QNhwhiu9JycvLCbo_9J1awStQSWe05vJtkESt4hjoRO5W7jwgkTFx8tTCcgJa9Vs5fN2Z7SXcIqK7AWG5YMM_1RhCnb3Fs3WINxWLopWSdmMbvMB2XdSLnHP8gHMU7I63hzF6Ephn_nhDcHUa8Y3A68ypO0NNdoXlMYL5c1e4BU0FeFkSYeBZKdjwZB1vJnT3Xg0BxFx3tmdIjJI-oTXERlscY2rpWhocjrA9eyqfkYfpkqT9_AB0vb7xtiEohFHouZTxG6401HBzN-Ppl4t0HK8_2grdA5TdDiUf95KODtDxs2QM-k4-5HFdpq0if3VaOBsj2_qY83iy0ZwEwmzBZKtC0upMxB8m8smU1HBF-KLo2sEwSKygUx4sswSJLD2FXbDH0WkKEvsH6EpacDOeEh62dcQ%3D%3D Stage of the water elevation is encoded in the FCode. ftype FType Integer 4 0 0 Feature Type. Numeric value that encodes a type of feature, represented as a three-digit code. For further refinement of the feature type classification, see FCode. https://usgs-mrs.cr.usgs.gov/SPECX/lookup/lookupSearch?reportType=Data+Dictionary&tnmTheme=2&layer=-1&editionSpecification=-1&scale=-1&table=1&submit=Submit&__ncforminfo=h4OBpM3FxcWLQAJnupg6q-Eam1QNhwhiu9JycvLCbo_9J1awStQSWe05vJtkESt4hjoRO5W7jwgkTFx8tTCcgJa9Vs5fN2Z7SXcIqK7AWG5YMM_1RhCnb3Fs3WINxWLopWSdmMbvMB2XdSLnHP8gHMU7I63hzF6Ephn_nhDcHUa8Y3A68ypO0NNdoXlMYL5c1e4BU0FeFkSYeBZKdjwZB1vJnT3Xg0BxFx3tmdIjJI-oTXERlscY2rpWhocjrA9eyqfkYfpkqT9_AB0vb7xtiEohFHouZTxG6401HBzN-Ppl4t0HK8_2grdA5TdDiUf95KODtDxs2QM-k4-5HFdpq0if3VaOBsj2_qY83iy0ZwEwmzBZKtC0upMxB8m8smU1HBF-KLo2sEwSKygUx4sswSJLD2FXbDH0WkKEvsH6EpacDOeEh62dcQ%3D%3D default value varies, depending on feature fcode FCode Integer 4 0 0 Feature Code. Numeric value that encodes a set of characteristics for a type of feature. This five-digit code has two parts: the first three digits encode the feature type (FType); the last two digits encode values for a unique set of characteristics associated with the feature type. The set of characteristics may be single valued or multi-valued. https://usgs-mrs.cr.usgs.gov/SPECX/lookup/lookupSearch?reportType=Data+Dictionary&tnmTheme=2&layer=-1&editionSpecification=-1&scale=-1&table=1&submit=Submit&__ncforminfo=h4OBpM3FxcWLQAJnupg6q-Eam1QNhwhiu9JycvLCbo_9J1awStQSWe05vJtkESt4hjoRO5W7jwgkTFx8tTCcgJa9Vs5fN2Z7SXcIqK7AWG5YMM_1RhCnb3Fs3WINxWLopWSdmMbvMB2XdSLnHP8gHMU7I63hzF6Ephn_nhDcHUa8Y3A68ypO0NNdoXlMYL5c1e4BU0FeFkSYeBZKdjwZB1vJnT3Xg0BxFx3tmdIjJI-oTXERlscY2rpWhocjrA9eyqfkYfpkqT9_AB0vb7xtiEohFHouZTxG6401HBzN-Ppl4t0HK8_2grdA5TdDiUf95KODtDxs2QM-k4-5HFdpq0if3VaOBsj2_qY83iy0ZwEwmzBZKtC0upMxB8m8smU1HBF-KLo2sEwSKygUx4sswSJLD2FXbDH0WkKEvsH6EpacDOeEh62dcQ%3D%3D visibilityfilter VisibilityFilter Integer 4 0 0 Allows for filtering of features for usage of vector data at approximate scales. https://usgs-mrs.cr.usgs.gov/SPECX/lookup/lookupSearch?reportType=Data+Dictionary&tnmTheme=2&layer=-1&editionSpecification=-1&scale=-1&table=1&submit=Submit&__ncforminfo=h4OBpM3FxcWLQAJnupg6q-Eam1QNhwhiu9JycvLCbo_9J1awStQSWe05vJtkESt4hjoRO5W7jwgkTFx8tTCcgJa9Vs5fN2Z7SXcIqK7AWG5YMM_1RhCnb3Fs3WINxWLopWSdmMbvMB2XdSLnHP8gHMU7I63hzF6Ephn_nhDcHUa8Y3A68ypO0NNdoXlMYL5c1e4BU0FeFkSYeBZKdjwZB1vJnT3Xg0BxFx3tmdIjJI-oTXERlscY2rpWhocjrA9eyqfkYfpkqT9_AB0vb7xtiEohFHouZTxG6401HBzN-Ppl4t0HK8_2grdA5TdDiUf95KODtDxs2QM-k4-5HFdpq0if3VaOBsj2_qY83iy0ZwEwmzBZKtC0upMxB8m8smU1HBF-KLo2sEwSKygUx4sswSJLD2FXbDH0WkKEvsH6EpacDOeEh62dcQ%3D%3D streamorder StreamOrder Integer 4 0 0 Strahler stream order number for the drain. https://usgs-mrs.cr.usgs.gov/SPECX/lookup/lookupSearch?reportType=Data+Dictionary&tnmTheme=2&layer=-1&editionSpecification=-1&scale=-1&table=1&submit=Submit&__ncforminfo=h4OBpM3FxcWLQAJnupg6q-Eam1QNhwhiu9JycvLCbo_9J1awStQSWe05vJtkESt4hjoRO5W7jwgkTFx8tTCcgJa9Vs5fN2Z7SXcIqK7AWG5YMM_1RhCnb3Fs3WINxWLopWSdmMbvMB2XdSLnHP8gHMU7I63hzF6Ephn_nhDcHUa8Y3A68ypO0NNdoXlMYL5c1e4BU0FeFkSYeBZKdjwZB1vJnT3Xg0BxFx3tmdIjJI-oTXERlscY2rpWhocjrA9eyqfkYfpkqT9_AB0vb7xtiEohFHouZTxG6401HBzN-Ppl4t0HK8_2grdA5TdDiUf95KODtDxs2QM-k4-5HFdpq0if3VaOBsj2_qY83iy0ZwEwmzBZKtC0upMxB8m8smU1HBF-KLo2sEwSKygUx4sswSJLD2FXbDH0WkKEvsH6EpacDOeEh62dcQ%3D%3D FTypeName FTypeName String 60 0 0 description Description String 255 0 0 Character string that contains all the characteristics and values associated with a feature code. https://usgs-mrs.cr.usgs.gov/SPECX/lookup/lookupSearch?reportType=Data+Dictionary&tnmTheme=2&layer=-1&editionSpecification=-1&scale=-1&table=1&submit=Submit&__ncforminfo=h4OBpM3FxcWLQAJnupg6q-Eam1QNhwhiu9JycvLCbo_9J1awStQSWe05vJtkESt4hjoRO5W7jwgkTFx8tTCcgJa9Vs5fN2Z7SXcIqK7AWG5YMM_1RhCnb3Fs3WINxWLopWSdmMbvMB2XdSLnHP8gHMU7I63hzF6Ephn_nhDcHUa8Y3A68ypO0NNdoXlMYL5c1e4BU0FeFkSYeBZKdjwZB1vJnT3Xg0BxFx3tmdIjJI-oTXERlscY2rpWhocjrA9eyqfkYfpkqT9_AB0vb7xtiEohFHouZTxG6401HBzN-Ppl4t0HK8_2grdA5TdDiUf95KODtDxs2QM-k4-5HFdpq0if3VaOBsj2_qY83iy0ZwEwmzBZKtC0upMxB8m8smU1HBF-KLo2sEwSKygUx4sswSJLD2FXbDH0WkKEvsH6EpacDOeEh62dcQ%3D%3D Only some features have attributes; only feature type is used if no additional values are encoded. canalditchtype Canal Ditch Type String 32 0 0 Function or purpose of the feature (Aqueduct or Unspecified). https://usgs-mrs.cr.usgs.gov/SPECX/lookup/lookupSearch?reportType=Data+Dictionary&tnmTheme=2&layer=-1&editionSpecification=-1&scale=-1&table=1&submit=Submit&__ncforminfo=h4OBpM3FxcWLQAJnupg6q-Eam1QNhwhiu9JycvLCbo_9J1awStQSWe05vJtkESt4hjoRO5W7jwgkTFx8tTCcgJa9Vs5fN2Z7SXcIqK7AWG5YMM_1RhCnb3Fs3WINxWLopWSdmMbvMB2XdSLnHP8gHMU7I63hzF6Ephn_nhDcHUa8Y3A68ypO0NNdoXlMYL5c1e4BU0FeFkSYeBZKdjwZB1vJnT3Xg0BxFx3tmdIjJI-oTXERlscY2rpWhocjrA9eyqfkYfpkqT9_AB0vb7xtiEohFHouZTxG6401HBzN-Ppl4t0HK8_2grdA5TdDiUf95KODtDxs2QM-k4-5HFdpq0if3VaOBsj2_qY83iy0ZwEwmzBZKtC0upMxB8m8smU1HBF-KLo2sEwSKygUx4sswSJLD2FXbDH0WkKEvsH6EpacDOeEh62dcQ%3D%3D Values are Aqueduct or Unspecified. hydrographiccategory Hydrographic Category String 32 0 0 Portion of the year the feature contains water. https://usgs-mrs.cr.usgs.gov/SPECX/lookup/lookupSearch?reportType=Data+Dictionary&tnmTheme=2&layer=-1&editionSpecification=-1&scale=-1&table=1&submit=Submit&__ncforminfo=h4OBpM3FxcWLQAJnupg6q-Eam1QNhwhiu9JycvLCbo_9J1awStQSWe05vJtkESt4hjoRO5W7jwgkTFx8tTCcgJa9Vs5fN2Z7SXcIqK7AWG5YMM_1RhCnb3Fs3WINxWLopWSdmMbvMB2XdSLnHP8gHMU7I63hzF6Ephn_nhDcHUa8Y3A68ypO0NNdoXlMYL5c1e4BU0FeFkSYeBZKdjwZB1vJnT3Xg0BxFx3tmdIjJI-oTXERlscY2rpWhocjrA9eyqfkYfpkqT9_AB0vb7xtiEohFHouZTxG6401HBzN-Ppl4t0HK8_2grdA5TdDiUf95KODtDxs2QM-k4-5HFdpq0if3VaOBsj2_qY83iy0ZwEwmzBZKtC0upMxB8m8smU1HBF-KLo2sEwSKygUx4sswSJLD2FXbDH0WkKEvsH6EpacDOeEh62dcQ%3D%3D Values are Intermittent, Ephemeral or Perennial. pipelinetype Pipeline Type String 32 0 0 Function or purpose of the feature. https://usgs-mrs.cr.usgs.gov/SPECX/lookup/lookupSearch?reportType=Data+Dictionary&tnmTheme=2&layer=-1&editionSpecification=-1&scale=-1&table=1&submit=Submit&__ncforminfo=h4OBpM3FxcWLQAJnupg6q-Eam1QNhwhiu9JycvLCbo_9J1awStQSWe05vJtkESt4hjoRO5W7jwgkTFx8tTCcgJa9Vs5fN2Z7SXcIqK7AWG5YMM_1RhCnb3Fs3WINxWLopWSdmMbvMB2XdSLnHP8gHMU7I63hzF6Ephn_nhDcHUa8Y3A68ypO0NNdoXlMYL5c1e4BU0FeFkSYeBZKdjwZB1vJnT3Xg0BxFx3tmdIjJI-oTXERlscY2rpWhocjrA9eyqfkYfpkqT9_AB0vb7xtiEohFHouZTxG6401HBzN-Ppl4t0HK8_2grdA5TdDiUf95KODtDxs2QM-k4-5HFdpq0if3VaOBsj2_qY83iy0ZwEwmzBZKtC0upMxB8m8smU1HBF-KLo2sEwSKygUx4sswSJLD2FXbDH0WkKEvsH6EpacDOeEh62dcQ%3D%3D Values are Aqueduct, General, Penstock or Siphon. positionalaccuracy Positional Accuracy String 32 0 0 The accuracy within which a feature may be confidently positioned. https://usgs-mrs.cr.usgs.gov/SPECX/lookup/lookupSearch?reportType=Data+Dictionary&tnmTheme=2&layer=-1&editionSpecification=-1&scale=-1&table=1&submit=Submit&__ncforminfo=h4OBpM3FxcWLQAJnupg6q-Eam1QNhwhiu9JycvLCbo_9J1awStQSWe05vJtkESt4hjoRO5W7jwgkTFx8tTCcgJa9Vs5fN2Z7SXcIqK7AWG5YMM_1RhCnb3Fs3WINxWLopWSdmMbvMB2XdSLnHP8gHMU7I63hzF6Ephn_nhDcHUa8Y3A68ypO0NNdoXlMYL5c1e4BU0FeFkSYeBZKdjwZB1vJnT3Xg0BxFx3tmdIjJI-oTXERlscY2rpWhocjrA9eyqfkYfpkqT9_AB0vb7xtiEohFHouZTxG6401HBzN-Ppl4t0HK8_2grdA5TdDiUf95KODtDxs2QM-k4-5HFdpq0if3VaOBsj2_qY83iy0ZwEwmzBZKtC0upMxB8m8smU1HBF-KLo2sEwSKygUx4sswSJLD2FXbDH0WkKEvsH6EpacDOeEh62dcQ%3D%3D Values are Approximate or Definite. relationshiptosurface Relationship to Surface String 32 0 0 Vertical location of the feature relative to the surface. https://usgs-mrs.cr.usgs.gov/SPECX/lookup/lookupSearch?reportType=Data+Dictionary&tnmTheme=2&layer=-1&editionSpecification=-1&scale=-1&table=1&submit=Submit&__ncforminfo=h4OBpM3FxcWLQAJnupg6q-Eam1QNhwhiu9JycvLCbo_9J1awStQSWe05vJtkESt4hjoRO5W7jwgkTFx8tTCcgJa9Vs5fN2Z7SXcIqK7AWG5YMM_1RhCnb3Fs3WINxWLopWSdmMbvMB2XdSLnHP8gHMU7I63hzF6Ephn_nhDcHUa8Y3A68ypO0NNdoXlMYL5c1e4BU0FeFkSYeBZKdjwZB1vJnT3Xg0BxFx3tmdIjJI-oTXERlscY2rpWhocjrA9eyqfkYfpkqT9_AB0vb7xtiEohFHouZTxG6401HBzN-Ppl4t0HK8_2grdA5TdDiUf95KODtDxs2QM-k4-5HFdpq0if3VaOBsj2_qY83iy0ZwEwmzBZKtC0upMxB8m8smU1HBF-KLo2sEwSKygUx4sswSJLD2FXbDH0WkKEvsH6EpacDOeEh62dcQ%3D%3D Values are Abovewater or Underwater. reservoirtype Reservoir Type String 32 0 0 Function or purpose of the feature. https://usgs-mrs.cr.usgs.gov/SPECX/lookup/lookupSearch?reportType=Data+Dictionary&tnmTheme=2&layer=-1&editionSpecification=-1&scale=-1&table=1&submit=Submit&__ncforminfo=h4OBpM3FxcWLQAJnupg6q-Eam1QNhwhiu9JycvLCbo_9J1awStQSWe05vJtkESt4hjoRO5W7jwgkTFx8tTCcgJa9Vs5fN2Z7SXcIqK7AWG5YMM_1RhCnb3Fs3WINxWLopWSdmMbvMB2XdSLnHP8gHMU7I63hzF6Ephn_nhDcHUa8Y3A68ypO0NNdoXlMYL5c1e4BU0FeFkSYeBZKdjwZB1vJnT3Xg0BxFx3tmdIjJI-oTXERlscY2rpWhocjrA9eyqfkYfpkqT9_AB0vb7xtiEohFHouZTxG6401HBzN-Ppl4t0HK8_2grdA5TdDiUf95KODtDxs2QM-k4-5HFdpq0if3VaOBsj2_qY83iy0ZwEwmzBZKtC0upMxB8m8smU1HBF-KLo2sEwSKygUx4sswSJLD2FXbDH0WkKEvsH6EpacDOeEh62dcQ%3D%3D Values are Aquaculture, Decorative Pool, Disposal, Evaporator, Swim Pool, Treatment, Unspecified or Water Storage. pubDate PublicationDate Date 8 0 0 Publication date of the HUC4 dataset. processor HUC4 HUC4 String 255 0 0 4-digit hydrologic unit processor State State String 255 0 0 SHAPE_Length SHAPE_Length Double 8 0 0 Length of feature in internal units. Esri Positive real numbers that are automatically generated. SHAPE_Area SHAPE_Area Double 8 0 0 Area of feature in internal units squared. Esri Positive real numbers that are automatically generated. Reservoir 436 resolution Resolution Coded Value Default value Duplicate Integer elevation ElevationRange Range Default value Default value Double fcode 43600 Reservoir FCode Coded Value Default value Duplicate Integer visibilityfilter 0 VisibilityFilter Domain Coded Value Default value Duplicate Integer reachcode ReachCode String 14 0 0 SwampMarsh 466 resolution Resolution Coded Value Default value Duplicate Integer elevation ElevationRange Range Default value Default value Double fcode 46600 SwampMarsh FCode Coded Value Default value Duplicate Integer visibilityfilter 0 VisibilityFilter Domain Coded Value Default value Duplicate Integer Estuary 493 resolution Resolution Coded Value Default value Duplicate Integer elevation ElevationRange Range Default value Default value Double fcode 49300 Estuary FCode Coded Value Default value Duplicate Integer visibilityfilter 0 VisibilityFilter Domain Coded Value Default value Duplicate Integer LakePond 390 resolution Resolution Coded Value Default value Duplicate Integer elevation ElevationRange Range Default value Default value Double fcode 39004 LakePond FCode Coded Value Default value Duplicate Integer visibilityfilter 0 VisibilityFilter Domain Coded Value Default value Duplicate Integer Playa 361 resolution Resolution Coded Value Default value Duplicate Integer elevation ElevationRange Range Default value Default value Double fcode 36100 Playa FCode Coded Value Default value Duplicate Integer visibilityfilter 0 VisibilityFilter Domain Coded Value Default value Duplicate Integer Ice Mass 378 resolution Resolution Coded Value Default value Duplicate Integer elevation ElevationRange Range Default value Default value Double fcode 37800 Ice Mass FCode Coded Value Default value Duplicate Integer visibilityfilter 0 VisibilityFilter Domain Coded Value Default value Duplicate Integer Foreshore 364 resolution Resolution Coded Value Default value Duplicate Integer elevation ElevationRange Range Default value Default value Double fcode 36400 Foreshore FCode Coded Value Default value Duplicate Integer visibilityfilter 0 VisibilityFilter Domain Coded Value Default value Duplicate Integer Spillway 455 resolution Resolution Coded Value Default value Duplicate Integer elevation ElevationRange Range Default value Default value Double fcode 45500 Spillway FCode Coded Value Default value Duplicate Integer visibilityfilter 0 VisibilityFilter Domain Coded Value Default value Duplicate Integer StreamRiver 460 resolution Resolution Coded Value Default value Duplicate Integer elevation ElevationRange Range Default value Default value Double fcode 46006 StreamRiver FCode Coded Value Default value Duplicate Integer visibilityfilter 0 VisibilityFilter Domain Coded Value Default value Duplicate Integer BayInlet 312 resolution Resolution Coded Value Default value Duplicate Integer elevation ElevationRange Range Default value Default value Double fcode 31200 BayInlet FCode Coded Value Default value Duplicate Integer visibilityfilter 0 VisibilityFilter Domain Coded Value Default value Duplicate Integer Wash 484 resolution Resolution Coded Value Default value Duplicate Integer elevation ElevationRange Range Default value Default value Double fcode 48400 Wash FCode Coded Value Default value Duplicate Integer visibilityfilter 0 VisibilityFilter Domain Coded Value Default value Duplicate Integer Inundation Area 403 resolution Resolution Coded Value Default value Duplicate Integer elevation ElevationRange Range Default value Default value Double fcode 40308 Inundation Area FCode Coded Value Default value Duplicate Integer visibilityfilter 0 VisibilityFilter Domain Coded Value Default value Duplicate Integer Area to be Submerged 307 resolution Resolution Coded Value Default value Duplicate Integer elevation ElevationRange Range Default value Default value Double fcode 30700 Area to be Submerged FCode Coded Value Default value Duplicate Integer visibilityfilter 0 VisibilityFilter Domain Coded Value Default value Duplicate Integer Water IntakeOutflow 485 resolution Resolution Coded Value Default value Duplicate Integer elevation ElevationRange Range Default value Default value Double fcode 48500 Water IntakeOutflow FCode Coded Value Default value Duplicate Integer visibilityfilter 0 VisibilityFilter Domain Coded Value Default value Duplicate Integer DamWeir 343 resolution Resolution Coded Value Default value Duplicate Integer elevation ElevationRange Range Default value Default value Double fcode 34305 DamWeir FCode Coded Value Default value Duplicate Integer visibilityfilter 0 VisibilityFilter Domain Coded Value Default value Duplicate Integer SeaOcean 445 resolution Resolution Coded Value Default value Duplicate Integer elevation ElevationRange Range Default value Default value Double fcode 44500 SeaOcean FCode Coded Value Default value Duplicate Integer visibilityfilter 0 VisibilityFilter Domain Coded Value Default value Duplicate Integer CanalDitch 336 resolution Resolution Coded Value Default value Duplicate Integer elevation ElevationRange Range Default value Default value Double fcode 33600 CanalDitch FCode Coded Value Default value Duplicate Integer visibilityfilter 0 VisibilityFilter Domain Coded Value Default value Duplicate Integer Lock Chamber 398 resolution Resolution Coded Value Default value Duplicate Integer elevation ElevationRange Range Default value Default value Double fcode 39800 Lock Chamber FCode Coded Value Default value Duplicate Integer visibilityfilter 0 VisibilityFilter Domain Coded Value Default value Duplicate Integer dataset EPSG 8.8(9.3.1.2) 143787 Simple FALSE 143787 TRUE FALSE 20211203