asdi.WATER.NHD_HIGH_RES_AREA_USGS

SDE Feature Class

Tags
Stream / Water, Canal / Ditch, US, Hydrography, Lake / Pond, FWHydrography, Swamp / Marsh, Reach Code, Artificial Path, Reservoir, Spring / Seep


Summary

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.

Description

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.

Credits

See dataset specific metadata.

Use limitations

None. Acknowledgment of the originating agencies would be appreciated in products derived from these data.

Extent

West  -96.760052    East  -88.358382
North  38.015867    South  31.563640

Scale Range

ArcGIS Metadata 

Topics and Keywords 

*Content type  Downloadable Data


Place keywords  US

Thesaurus
Title U.S. Department of Commerce, 1977, Countries, dependencies, areas of special sovereignty, and their principal administrative divisions (Federal Information Processing Standards 10-3): Washington, D.C., National Institute of Standards and Technology.




Theme keywords  Stream / Water, Canal / Ditch, Hydrography, Lake / Pond, FWHydrography, Swamp / Marsh, Reach Code, Artificial Path, Reservoir, Spring / Seep

Thesaurus
Title U.S. Department of the Interior, U.S. Geological Survey, 1999, Standards for National Hydrography Dataset (http://mapping.usgs.gov/standards/)




Citation 

*Title asdi.WATER.NHD_HIGH_RES_AREA_USGS


Presentation formats* digital map


Citation Contacts 

Responsible party
Organization's name U.S. Geological Survey in cooperation with U.S. Environmental Protection Agency, USDA Forest Service, and other Federal, State and local partners (see dataset specific metadata under Data_Set_Credit for details).
Contact's role  originator


Responsible party
Organization's name U.S. Geological Survey
Contact's role  publisher


Contact information
Address
Delivery point Reston, Virginia



Resource Details 

Dataset languages  English (UNITED STATES)


Status  under development
Spatial representation type* vector


*Processing environment Microsoft Windows 7 Version 6.1 (Build 7601) Service Pack 1; Esri ArcGIS 10.3.0.4322


Credits
See dataset specific metadata.

ArcGIS item properties
*Name asdi.WATER.NHD_HIGH_RES_AREA_USGS
*Location Server=170.94.248.50; Service=sde:sqlserver:170.94.248.50; Database=asdi; User=water; Version=dbo.DEFAULT
*Access protocol ArcSDE Connection

Extents 

Extent
Geographic extent
Bounding rectangle
West longitude -200
East longitude -56.8344239
South latitude 0
North latitude 143.165576

Vertical extent
*Minimum value 0.000000
*Maximum value 0.000000


Extent
Description
See dataset specific metadata.

Vertical extent
*Minimum value 0.000000
*Maximum value 0.000000


Extent
Geographic extent
Bounding rectangle
Extent type  Extent used for searching
*West longitude -96.760052
*East longitude -88.358382
*North latitude 38.015867
*South latitude 31.563640
*Extent contains the resource Yes

Extent in the item's coordinate system
*West longitude 169620.846100
*East longitude 908050.705100
*South latitude 3500090.570300
*North latitude 4207575.468400
*Extent contains the resource Yes

Resource Points of Contact 

Point of contact
Organization's name Earth Science Information Center, U.S. Geological Survey
Contact's role  point of contact


Contact information
Phone
Voice 1 888 ASK USGS

Address
Type postal
Delivery point 507 National Center
City Reston
Administrative area VA
Postal code 20192
Country US
e-mail addressask@usgs.gov

Hours of service
0800-1600 Eastern Time

Contact instructions
In addition to the address above there are other ESIC offices throughout the country. A full list of these offices is at URL: http://mapping.usgs.gov/esic/esic_index.html



Resource Maintenance 

Resource maintenance
Update frequency  irregular


Resource Constraints 

Constraints
Limitations of use
None. Acknowledgment of the originating agencies would be appreciated in products derived from these data.

Spatial Reference 

ArcGIS coordinate system
*Type Projected
*Geographic coordinate reference GCS_North_American_1983
*Projection NAD_1983_UTM_Zone_15N
*Coordinate reference details
Projected coordinate system
Well-known identifier 26915
X origin -5120900
Y origin -9998100
XY scale 10000
Z origin -10000
Z scale 40000
M origin 0
M scale 1
XY tolerance 0.001
Z tolerance 0.00020000000000000001
M tolerance 0.001
High precision true
Latest well-known identifier 26915
Well-known text PROJCS["NAD_1983_UTM_Zone_15N",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["Transverse_Mercator"],PARAMETER["False_Easting",500000.0],PARAMETER["False_Northing",0.0],PARAMETER["Central_Meridian",-93.0],PARAMETER["Scale_Factor",0.9996],PARAMETER["Latitude_Of_Origin",0.0],UNIT["Meter",1.0],AUTHORITY["EPSG",26915]]

Reference system identifier
*Value 26915
*Codespace EPSG
*Version 8.2.6


Spatial Data Properties 

Vector
*Level of topology for this dataset  geometry only


Geometric objects
Feature class name asdi.WATER.NHD_HIGH_RES_AREA_USGS
*Object type  composite
*Object count 8565



ArcGIS Feature Class Properties
Feature class name asdi.WATER.NHD_HIGH_RES_AREA_USGS
*Feature type Simple
*Geometry type Polygon
*Has topology FALSE
*Feature count 8565
*Spatial index TRUE
*Linear referencing FALSE



Data Quality 

Scope of quality information
Resource level  dataset




Data quality report - Topological consistency
Evaluation method
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.





Data quality report - Conceptual consistency
Measure description
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.





Data quality report - Completeness omission
Measure description
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. Reaches 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/. This statement is generally true for the most common sources of NHD data. Other sources and methods may have been used to create or update NHD data. In some cases, additional information may be found in the NHDMetadata table.





Data quality report - Quantitative attribute accuracy
Measure description
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. Reaches 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/. This statement is generally true for the most common sources of NHD data. Other sources and methods may have been used to create or update NHD data. In some cases, additional information may be found in the NHDMetadata table.





Data quality report - Absolute external positional accuracy
Dimension horizontal


Measure description
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. This statement is generally true for the most common sources of NHD data. Other sources and methods may have been used to create or update NHD data. In some cases, additional information may be found in the NHDMetadata table.





Data quality report - Absolute external positional accuracy
Dimension vertical


Measure description
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. This statement is generally true for the most common sources of NHD data. Other sources and methods may have been used to create or update NHD data. In some cases, additional information may be found in the NHDMetadata table.





Lineage 

Process step
When the process occurred
Indeterminate date unknown
Description
The processes used to create and maintain high-resolution NHD data can be found in the table called "NHDMetadata". Because NHD data can be downloaded using several user-defined areas, the process descriptions can vary for each download. The NHDMetadata table contains a list of all the process descriptions that apply to a particular download. These process descriptions are linked using the DuuID to the NHDFeatureToMetadata table which contains the com_ids of all the features within the download. In addition, another table, the NHDSourceCitation, can also be linked through the DuuID to determine the sources used to create or update NHD data.





Distribution 

Distributor
Contact information
Organization's name Earth Science Information Center, U.S. Geological Survey
Contact's role  distributor


Contact information
Phone
Voice 1 888 ASK USGS

Address
e-mail addressask@usgs.gov

Hours of service
0800-1600 Eastern Time

Contact instructions
In addition to the address above there are other ESIC offices throughout the country. A full list of these offices is at URL: http://mapping.usgs.gov/esic/esic_index.html



Available format
Name ArcGIS Geodatabase
Version 8.3
File decompression technique tar and uncompress


Ordering process



Distribution format
*Name SDE Feature Class


Fields 

Details for object asdi.WATER.NHD_HIGH_RES_AREA_USGS 
*Type Feature Class
*Row count 8565


Field OBJECTID
 
*Alias OBJECTID
*Data type OID
*Width 4
*Precision 10
*Scale 0
*Field description
Internal feature number.

*Description source
ESRI

*Description of values
Sequential unique whole numbers that are automatically generated.





Field Shape
 
*Alias Shape
*Data type Geometry
*Width 4
*Precision 0
*Scale 0
*Field description
Feature geometry.

*Description source
ESRI

*Description of values
Coordinates defining the features.





Field FDate
 
*Alias FDate
*Data type Date
*Width 36
*Precision 0
*Scale 0




Field Resolution
 
*Alias Resolution
*Data type Integer
*Width 4
*Precision 10
*Scale 0


Subtype information
*Subtype name (Subtype code)
CanalDitch (336)
2
Levee (568)
2
Spillway (455)
2
Lock Chamber (398)
2
Inundation Area (403)
2
Submerged Stream (461)
2
SeaOcean (445)
2
BayInlet (312)
2
StreamRiver (460)
2
Foreshore (364)
2
Wash (484)
2
Water IntakeOutflow (485)
2
Area of Complex Channels (537)
2
DamWeir (343)
2
Area to be Submerged (307)
2
Rapids (431)
2
Bridge (318)
2
Flume (362)
2
Water IntakeOutflow (485)
2
Area to be Submerged (307)
2

*Domain name Resolution
*Description
*Type Coded Value
*Merge rule Default value
*Split rule Duplicate



Field GNIS_ID
 
*Alias GNIS_ID
*Data type String
*Width 10
*Precision 0
*Scale 0




Field GNIS_Name
 
*Alias GNIS_Name
*Data type String
*Width 65
*Precision 0
*Scale 0




Field AreaSqKm
 
*Alias AreaSqKm
*Data type Double
*Width 8
*Precision 38
*Scale 8




Field Elevation
 
*Alias Elevation
*Data type Double
*Width 8
*Precision 38
*Scale 8


Subtype information
*Subtype name (Subtype code)
CanalDitch (336)
2
Levee (568)
2
Spillway (455)
2
Lock Chamber (398)
2
Inundation Area (403)
2
Submerged Stream (461)
2
SeaOcean (445)
2
BayInlet (312)
2
StreamRiver (460)
2
Foreshore (364)
2
Wash (484)
2
Water IntakeOutflow (485)
2
Area of Complex Channels (537)
2
DamWeir (343)
2
Area to be Submerged (307)
2
Rapids (431)
2
Bridge (318)
2
Flume (362)
2
Water IntakeOutflow (485)
no default value
Area to be Submerged (307)
no default value

*Domain name ElevationRange
*Description
*Type Range
*Merge rule Default value
*Split rule Default value



Field FType
 
*Alias FType
*Data type Integer
*Width 4
*Precision 10
*Scale 0


Subtype information
*Subtype name (Subtype code)
CanalDitch (336)
336
Levee (568)
568
Spillway (455)
455
Lock Chamber (398)
398
Inundation Area (403)
403
Submerged Stream (461)
461
SeaOcean (445)
445
BayInlet (312)
312
StreamRiver (460)
460
Foreshore (364)
364
Wash (484)
484
Water IntakeOutflow (485)
485
Area of Complex Channels (537)
537
DamWeir (343)
343
Area to be Submerged (307)
307
Rapids (431)
431
Bridge (318)
318
Flume (362)
362
Water IntakeOutflow (485)
485
Area to be Submerged (307)
307



Field FCode
 
*Alias FCode
*Data type Integer
*Width 4
*Precision 10
*Scale 0


Subtype information
*Subtype name (Subtype code)
CanalDitch (336)
33600
Levee (568)
56800
Spillway (455)
45500
Lock Chamber (398)
39800
Inundation Area (403)
40308
Submerged Stream (461)
46100
SeaOcean (445)
44500
BayInlet (312)
31200
StreamRiver (460)
46006
Foreshore (364)
36400
Wash (484)
48400
Water IntakeOutflow (485)
48500
Area of Complex Channels (537)
53700
DamWeir (343)
34305
Area to be Submerged (307)
30700
Rapids (431)
43100
Bridge (318)
31800
Flume (362)
36200
Water IntakeOutflow (485)
48500
Area to be Submerged (307)
30700

*Domain name Area to be Submerged FCode
*Description
*Type Coded Value
*Merge rule Default value
*Split rule Duplicate



Field Permanent_Identifier
 
*Alias Permanent_Identifier
*Data type String
*Width 40
*Precision 0
*Scale 0




Field VisibilityFilter
 
*Alias VisibilityFilter
*Data type Integer
*Width 4
*Precision 10
*Scale 0


Subtype information
*Subtype name (Subtype code)
CanalDitch (336)
0
Levee (568)
0
Spillway (455)
0
Lock Chamber (398)
0
Inundation Area (403)
0
Submerged Stream (461)
0
SeaOcean (445)
0
BayInlet (312)
0
StreamRiver (460)
0
Foreshore (364)
0
Wash (484)
0
Water IntakeOutflow (485)
0
Area of Complex Channels (537)
0
DamWeir (343)
0
Area to be Submerged (307)
0
Rapids (431)
0
Bridge (318)
0
Flume (362)
0

*Domain name VisibilityFilter Domain
*Description
*Type Coded Value
*Merge rule Default value
*Split rule Duplicate



Field Shape.STArea()
 
*Alias Shape.STArea()
*Data type Double
*Width 0
*Precision 0
*Scale 0




Field Shape.STLength()
 
*Alias Shape.STLength()
*Data type Double
*Width 0
*Precision 0
*Scale 0






Details for object  NHDAreaToMeta
 
*Type Relationship


Overview Description
Entity and Attribute Overview
The National Hydrography Dataset is a comprehensive set of digital spatial data that encodes information about naturally occurring and constructed bodies of water, paths through which water flows, and related entities.  The information encoded about features includes a feature date, classification by type, other characteristics, a unique common identifier, the feature length or area, and (rarely) elevation of the surface of water pools and a description of the stage of the elevation.  For reaches, encoded information includes a reach code.  Names and their identifiers in the Geographic Names Information System, are assigned to most feature types.  The direction of flow is encoded for networked features.  The data also contains relations that encode metadata, and information that supports the exchange of future updates and improvements to the data.  The names and  definitions of all feature types, characteristics, and values are in the Standards for National Hydrography Dataset:  Reston, Virginia, U.S. Geological Survey, 1999.  The document is available online through http://mapping.usgs.gov/standards/.



Entity and Attribute Detail Citation
The names and definitions of all feature types, characteristics, and values are in U.S. Geological Survey, 1999, Standards for National Hydrography Dataset High Resolution:  Reston, Virginia, U.S. Geological Survey.  The document is available online through http://mapping.usgs.gov/standards/.  Information about tables and fields in the data are available from the user documentation for the National Hydrography Dataset at http://nhd.usgs.gov.  The National Map - Hydrography Fact Sheet is also available at: http://erg.usgs.gov/isb/pubs/factsheets/fs06002.html.





Metadata Details 

Metadata language English (UNITED STATES)
Metadata character set  utf8 - 8 bit UCS Transfer Format


Scope of the data described by the metadata  dataset
Scope name* dataset


*Last update 2017-07-20


ArcGIS metadata properties
Metadata format ArcGIS 1.0
Metadata style ISO 19139 Metadata Implementation Specification


Created in ArcGIS for the item 2017-07-17 10:53:45
Last modified in ArcGIS for the item 2017-07-20 10:04:11


Automatic updates
Have been performed Yes
Last update 2017-07-20 10:04:11


Metadata Contacts 

Metadata contact
Organization's name Earth Science Information Center, U.S. Geological Survey
Contact's role  point of contact


Contact information
Phone
Voice 1 888 ASK USGS

Address
Type postal
Delivery point 507 National Center
City Reston
Administrative area VA
Postal code 20192.
Country US
e-mail addressnhd@usgs.gov

Hours of service
0800-1600 Eastern Time

Contact instructions
n addition to the address above there are other ESIC offices throughout the country. A full list of these offices is at URL: http://mapping.usgs.gov/esic/esic_index.html



Thumbnail and Enclosures 

Thumbnail

Enclosure
Enclosure type  File
Description of enclosure original metadata
Original metadata document, which was translated yes
Source metadata format fgdc

FGDC Metadata (read-only) 

Identification 

Citation
Citation Information
OriginatorU.S. Geological Survey in cooperation with U.S. Environmental Protection Agency, USDA Forest Service, and other Federal, State and local partners (see dataset specific metadata under Data_Set_Credit for details).
Publication DateSee dataset specific metadata.
Publication TimeUnknown
Title
NHDArea
Geospatial Data Presentation Formvector digital data
Publication Information
Publication PlaceReston, Virginia
PublisherU.S. Geological Survey
Online Linkage\\igskbthisusy01\nhdgeo\oracle_export\GDBExtractServer\Template\NHD_File_Template_High_92v210.gdb

Description
Abstract
                            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.
                          
Purpose
                            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.
                          
Time Period of Content
Time Period Information
Single Date/Time
Calendar DateREQUIRED:  he year (and optionally month, or month and day) for which the data set corresponds to the ground.
Currentness Reference
                            See dataset specific metadata.
                          
Status
ProgressIn work
Maintenance and Update FrequencyIrregular

Spatial Domain
Bounding Coordinates
West Bounding Coordinate-200
East Bounding Coordinate-56.8344239
North Bounding Coordinate143.165576
South Bounding Coordinate0

Keywords
Theme
Theme Keyword ThesaurusU.S. Department of the Interior, U.S. Geological Survey, 1999, Standards for National Hydrography Dataset (http://mapping.usgs.gov/standards/)
Theme KeywordFWHydrography
Theme KeywordHydrography
Theme KeywordStream / Water
Theme KeywordLake / Pond
Theme KeywordCanal / Ditch
Theme KeywordReservoir
Theme KeywordSpring / Seep
Theme KeywordSwamp / Marsh
Theme KeywordArtificial Path
Theme KeywordReach Code

Place
Place Keyword ThesaurusU.S. Department of Commerce, 1977, Countries, dependencies, areas of special sovereignty, and their principal administrative divisions (Federal Information Processing Standards 10-3): Washington, D.C., National Institute of Standards and Technology.
Place KeywordUS

Access Constraints
                        None
                      
Use Constraints
                        None.  Acknowledgment of the originating agencies would
be appreciated in products derived from these data.
                      
Point of Contact
Contact Information
Contact Organization Primary
Contact OrganizationEarth Science Information Center, U.S. Geological Survey
Contact Address
Address Typemailing address
Address507 National Center
CityReston
State or ProvinceVA
Postal Code20192
CountryUNITED STATES

Contact Voice Telephone1 888 ASK USGS
Contact Electronic Mail Addressask@usgs.gov
Hours of Service0800-1600 Eastern Time
Contact Instructions
                                In addition to the address above there are other ESIC offices throughout the country. A full list of these offices is at URL:  http://mapping.usgs.gov/esic/esic_index.html
                              

Data Set Credit
                        See dataset specific metadata.
                      
Native Data Set Environment
Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 2; ESRI ArcCatalog 9.3.1.1850

Data Quality 

Attribute Accuracy
Attribute Accuracy Report
                            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. Reaches 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/.
This statement is generally true for the most common sources of NHD data. Other sources and methods may have been used to create or update NHD data. In some cases, additional information may be found in the NHDMetadata table.
                          
Logical Consistency Report
                        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.
                      
Completeness Report
                        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. Reaches 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/.
This statement is generally true for the most common sources of NHD data. Other sources and methods may have been used to create or update NHD data. In some cases, additional information may be found in the NHDMetadata table.
                      
Positional Accuracy
Horizontal Positional Accuracy
Horizontal Positional Accuracy Report
                                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.
This statement is generally true for the most common sources of NHD data.  Other sources and methods may have been used to create or update NHD data.  In some cases, additional information may be found in the NHDMetadata table.
                              
Vertical Positional Accuracy
Vertical Positional Accuracy Report
                                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.
This statement is generally true for the most common sources of NHD data.  Other sources and methods may have been used to create or update NHD data.  In some cases, additional information may be found in the NHDMetadata table.
                              
Lineage
Process Step
Process Description
                                The processes used to create and maintain high-resolution NHD data can be found in the table called "NHDMetadata".  Because NHD data can be downloaded using several user-defined areas, the process descriptions can vary for each download.  The NHDMetadata table contains a list of all the process descriptions that apply to a particular download.   These process descriptions are linked using the DuuID to the NHDFeatureToMetadata table which contains the com_ids of all the features within the download. In addition, another table, the NHDSourceCitation, can also be linked through the DuuID to determine the sources used to create or update NHD data.
                              
Process DateUnknown


Process Step
Process Description
                                Dataset copied.
                              
Source Used Citation Abbreviation
\\F880\oracle_export\GDBExtractServer\Template\NHD_Template_High.mdb


Process Step
Process Description
                                Metadata imported.
                              
Source Used Citation Abbreviation
D:\Workspace\v107\Metadata\nhdarea.xml
Process Date2010-04-21
Process Time16:51:38


Process Step
Process Description
                                Dataset copied.
                              
Source Used Citation Abbreviation
\\IGSKBTHIWS531\D\ExtractTest\oracle_export\GDBExtractServer\Template\NHD_File_Template_High_92v200.gdb
Process Date2010-05-20
Process Time16:12:20


Process Step
Process Description
                                Dataset copied.
                              
Source Used Citation Abbreviation
\\igskbthisusy01\nhdgeo\oracle_export\GDBExtractServer\Template\NHD_Template_High_92v210.mdb
Process Date2012-02-21
Process Time13:58:26


Spatial Reference 

Horizontal Coordinate System Definition
Geodetic Model
Horizontal Datum NameNorth American Datum of 1983
Ellipsoid NameGeodetic Reference System 80
Semi-major Axis6378137.000000
Denominator of Flattening Ratio298.257222

Vertical Coordinate System Definition
Altitude System Definition
Altitude Datum NameNational Geodetic Vertical Datum of 1929
Altitude Resolution0.000025
Altitude Distance Unitsmeters
Altitude Encoding MethodExplicit elevation coordinate included with horizontal coordinates

Entities and Attributes 

Detailed Description
Entity Type
Entity Type Labelasdi.WATER.NHD_HIGH_RES_AREA_USGS

Attribute
Attribute LabelOBJECTID
Attribute Definition
Internal feature number.
Attribute Definition SourceESRI
Attribute Domain Values
Unrepresentable Domain
Sequential unique whole numbers that are automatically generated.

Attribute
Attribute LabelShape
Attribute Definition
Feature geometry.
Attribute Definition SourceESRI
Attribute Domain Values
Unrepresentable Domain
Coordinates defining the features.

Attribute
Attribute LabelFDate

Attribute
Attribute LabelResolution

Attribute
Attribute LabelGNIS_ID

Attribute
Attribute LabelGNIS_Name

Attribute
Attribute LabelAreaSqKm

Attribute
Attribute LabelElevation

Attribute
Attribute LabelFType

Attribute
Attribute LabelFCode

Attribute
Attribute LabelPermanent_Identifier

Attribute
Attribute LabelVisibilityFilter

Attribute
Attribute LabelShape.STArea()

Attribute
Attribute LabelShape.STLength()

Detailed Description
Entity Type
Entity Type LabelNHDAreaToMeta

Overview Description
Entity and Attribute Overview
                            The National Hydrography Dataset is a comprehensive set of digital spatial data that encodes information about naturally occurring and constructed bodies of water, paths through which water flows, and related entities.  The information encoded about features includes a feature date, classification by type, other characteristics, a unique common identifier, the feature length or area, and (rarely) elevation of the surface of water pools and a description of the stage of the elevation.  For reaches, encoded information includes a reach code.  Names and their identifiers in the Geographic Names Information System, are assigned to most feature types.  The direction of flow is encoded for networked features.  The data also contains relations that encode metadata, and information that supports the exchange of future updates and improvements to the data.  The names and  definitions of all feature types, characteristics, and values are in the Standards for National Hydrography Dataset:  Reston, Virginia, U.S. Geological Survey, 1999.  The document is available online through http://mapping.usgs.gov/standards/.
                          
Entity and Attribute Detail Citation
                            The names and definitions of all feature types, characteristics, and values are in U.S. Geological Survey, 1999, Standards for National Hydrography Dataset High Resolution:  Reston, Virginia, U.S. Geological Survey.  The document is available online through http://mapping.usgs.gov/standards/.  Information about tables and fields in the data are available from the user documentation for the National Hydrography Dataset at http://nhd.usgs.gov.  The National Map - Hydrography Fact Sheet is also available at: http://erg.usgs.gov/isb/pubs/factsheets/fs06002.html.
                          

Distribution Information 

Distributor
Contact Information
Contact Organization Primary
Contact OrganizationEarth Science Information Center, U.S. Geological Survey
Contact Voice Telephone1 888 ASK USGS
Contact Electronic Mail Addressask@usgs.gov
Hours of Service0800-1600 Eastern Time
Contact Instructions
                                In addition to the address above there are other ESIC offices throughout the country. A full list of these offices is at URL: http://mapping.usgs.gov/esic/esic_index.html
                              

Resource DescriptionDownloadable Data
Standard Order Process
Digital Form
Digital Transfer Information
Format NameArcGIS Geodatabase
Format Version Number8.3
File Decompression Techniquetar and uncompress

Metadata Reference 

Metadata Date2010-05-21
Metadata Contact
Contact Information
Contact Organization Primary
Contact OrganizationEarth Science Information Center, U.S. Geological Survey
Contact PersonREQUIRED: The person responsible for the metadata information.
Contact Address
Address Typemailing address
Address507 National Center
CityReston
State or ProvinceVA
Postal Code20192.
CountryUNITED STATES

Contact Voice Telephone1 888 ASK USGS
Contact Electronic Mail Addressnhd@usgs.gov
Hours of Service0800-1600 Eastern Time
Contact Instructions
                                n addition to the address above there are other ESIC offices throughout the country. A full list of these offices is at URL:  http://mapping.usgs.gov/esic/esic_index.html
                              

Metadata Standard NameFGDC Content Standards for Digital Geospatial Metadata
Metadata Standard VersionFGDC-STD-001-1998
Metadata Time Conventionlocal time