20211202
19005900
1.0
FALSE
NHDFlowlines_CoastalVa_downloaded_Nov2021_wm
-9320989.011600
-8372261.057600
4107233.919500
4795075.249400
1
002
Projected
GCS_WGS_1984
Linear Unit: Meter (1.000000)
<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/3.0.0'><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>-10000</ZOrigin><ZScale>40000</ZScale><MOrigin>0</MOrigin><MScale>8000</MScale><XYTolerance>0.001</XYTolerance><ZTolerance>0.00020000000000000001</ZTolerance><MTolerance>0.002</MTolerance><HighPrecision>true</HighPrecision><WKID>102100</WKID><LatestWKID>3857</LatestWKID></ProjectedCoordinateSystem>
WGS_1984_Web_Mercator_Auxiliary_Sphere
20220627
10423300
20220627
10423300
24000
24000
FGDC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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.
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
NHDFlowline - 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
Hydrography
North Carolina
Virginia
Stream / River
Lake / Pond
Canal / Ditch
Reservoir
Spring / Seep
Swamp / Marsh
Artificial Path
Reach Code
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
Esri ArcGIS 13.0.0.36056
1
-83.731869
-75.209301
39.510589
34.582098
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.
NHDFlowlines_CoastalVa_downloaded_Nov2021_wm
Feature Class
0
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
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
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.
Underground Conduit
420
resolution
Resolution
Coded Value
Default value
Duplicate
Integer
flowdir
HydroFlowDirections
Coded Value
Default value
Duplicate
Integer
0
fcode
42000
Underground Conduit FCode
Coded Value
Default value
Duplicate
Integer
mainpath
0
MainPath Domain
Coded Value
Default value
Duplicate
Integer
innetwork
1
NoYes Domain
Coded Value
Default value
Duplicate
Integer
visibilityfilter
0
VisibilityFilter Domain
Coded Value
Default value
Duplicate
Integer
Enabled
1
EnabledDomain
Coded Value
Default value
Default value
SmallInteger
Coastline
566
resolution
Resolution
Coded Value
Default value
Duplicate
Integer
flowdir
HydroFlowDirections
Coded Value
Default value
Duplicate
Integer
0
fcode
56600
Coastline FCode
Coded Value
Default value
Duplicate
Integer
mainpath
0
MainPath Domain
Coded Value
Default value
Duplicate
Integer
innetwork
1
NoYes Domain
Coded Value
Default value
Duplicate
Integer
visibilityfilter
0
VisibilityFilter Domain
Coded Value
Default value
Duplicate
Integer
Enabled
1
EnabledDomain
Coded Value
Default value
Default value
SmallInteger
lengthkm
LengthKm
Double
8
0
0
Length of linear feature. Value is computed when data are in 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
reachcode
ReachCode
String
14
0
0
Unique identifier. The first eight digits are the WBD_HUC8. The next six digits are randomly assigned, sequential numbers that are unique within a HUC8.
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
Required for all NHDFlowlines. NHDWaterbody and NHDPoint feature classes allow reach codes, but do not require them.
flowdir
FlowDir
Integer
4
0
0
Direction of flow relative to coordinate order.
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
Domain of values: With digitized Uninitialized
wbarea_permanent_identifier
WBArea_Permanent_Identifier
String
40
0
0
Permanent_Identifier of the waterbody through which the flowline flows.
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
Pipeline
428
resolution
Resolution
Coded Value
Default value
Duplicate
Integer
flowdir
HydroFlowDirections
Coded Value
Default value
Duplicate
Integer
0
fcode
42805
Pipeline FCode
Coded Value
Default value
Duplicate
Integer
mainpath
0
MainPath Domain
Coded Value
Default value
Duplicate
Integer
innetwork
1
NoYes Domain
Coded Value
Default value
Duplicate
Integer
visibilityfilter
0
VisibilityFilter Domain
Coded Value
Default value
Duplicate
Integer
Enabled
1
EnabledDomain
Coded Value
Default value
Default value
SmallInteger
StreamRiver
460
resolution
Resolution
Coded Value
Default value
Duplicate
Integer
flowdir
HydroFlowDirections
Coded Value
Default value
Duplicate
Integer
0
fcode
46006
StreamRiver FCode
Coded Value
Default value
Duplicate
Integer
mainpath
0
MainPath Domain
Coded Value
Default value
Duplicate
Integer
innetwork
1
NoYes Domain
Coded Value
Default value
Duplicate
Integer
visibilityfilter
0
VisibilityFilter Domain
Coded Value
Default value
Duplicate
Integer
Enabled
1
EnabledDomain
Coded Value
Default value
Default value
SmallInteger
mainpath
MainPath
Integer
4
0
0
The main stream path that tributary streams converge to or diverge from.
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
innetwork
InNetwork
Integer
4
0
0
ArtificialPath
558
resolution
Resolution
Coded Value
Default value
Duplicate
Integer
flowdir
HydroFlowDirections
Coded Value
Default value
Duplicate
Integer
0
fcode
55800
ArtificialPath FCode
Coded Value
Default value
Duplicate
Integer
mainpath
0
MainPath Domain
Coded Value
Default value
Duplicate
Integer
innetwork
1
NoYes Domain
Coded Value
Default value
Duplicate
Integer
visibilityfilter
0
VisibilityFilter Domain
Coded Value
Default value
Duplicate
Integer
Enabled
1
EnabledDomain
Coded Value
Default value
Default value
SmallInteger
Enabled
Enabled
SmallInteger
2
0
0
Connector
334
resolution
Resolution
Coded Value
Default value
Duplicate
Integer
flowdir
HydroFlowDirections
Coded Value
Default value
Duplicate
Integer
0
fcode
33400
Connector FCode
Coded Value
Default value
Duplicate
Integer
mainpath
0
MainPath Domain
Coded Value
Default value
Duplicate
Integer
innetwork
1
NoYes Domain
Coded Value
Default value
Duplicate
Integer
visibilityfilter
0
VisibilityFilter Domain
Coded Value
Default value
Duplicate
Integer
Enabled
1
EnabledDomain
Coded Value
Default value
Default value
SmallInteger
CanalDitch
336
resolution
Resolution
Coded Value
Default value
Duplicate
Integer
flowdir
HydroFlowDirections
Coded Value
Default value
Duplicate
Integer
0
fcode
33600
CanalDitch FCode
Coded Value
Default value
Duplicate
Integer
mainpath
0
MainPath Domain
Coded Value
Default value
Duplicate
Integer
innetwork
1
NoYes Domain
Coded Value
Default value
Duplicate
Integer
visibilityfilter
0
VisibilityFilter Domain
Coded Value
Default value
Duplicate
Integer
Enabled
1
EnabledDomain
Coded Value
Default value
Default value
SmallInteger
Drainageway
468
resolution
Resolution
Coded Value
Default value
Duplicate
Integer
flowdir
HydroFlowDirections
Coded Value
Default value
Duplicate
Integer
0
fcode
46800
Drainageway
Coded Value
Default value
Default value
Integer
mainpath
0
MainPath Domain
Coded Value
Default value
Duplicate
Integer
innetwork
NoYes Domain
Coded Value
Default value
Duplicate
Integer
visibilityfilter
VisibilityFilter Domain
Coded Value
Default value
Duplicate
Integer
Enabled
1
EnabledDomain
Coded Value
Default value
Default value
SmallInteger
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
6.18.3(9.3.1.2)
0
Simple
FALSE
0
TRUE
TRUE
20220627