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14405400
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FALSE
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320593.435860
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Linear Unit: Meter (1.000000)
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2020-10-27T00:00:00
USGS
USGS NHD
Islands
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.
<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><P STYLE="margin:0 0 0 0;"><SPAN>** MARIS staff clipped the May 7, 2022 Mississippi NHD geodatabase flowline feature with a 100 meter buffer around the state border to create this shapefile ** </SPAN></P><P><SPAN /></P></DIV></DIV></DIV>
USGS, MARIS
FWHydrography
Hydrography
Stream / River
Lake / Pond
Canal / Ditch
Reservoir
Spring / Seep
Swamp / Marsh
Artificial Path
Reach Code
<DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>None. Acknowledgment of the originating agencies would be appreciated in products derived from these data.</SPAN></P></DIV></DIV></DIV>
Esri ArcGIS 13.7.0.1901
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35.006345
30.162710
Islands
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0
Shape
Shape
Geometry
0
0
0
Feature geometry.
ESRI
Coordinates defining the features.
FDate
fdate
Date
8
0
0
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resolution
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10
10
0
GNIS_ID
gnis_id
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10
0
0
GNIS_Name
gnis_name
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areasqkm
Double
19
0
0
FID
FID
OID
4
0
0
Internal feature number.
Esri
Sequential unique whole numbers that are automatically generated.
Elevation
elevation
Double
19
0
0
FID_MS_NHD
FID_MS_NHD
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10
10
0
Permanent_
permanent_
String
40
0
0
ReachCode
reachcode
String
14
0
0
FType
ftype
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10
10
0
FCode
fcode
Integer
10
10
0
Shape_Area
SHAPE_Area
Double
19
0
0
Area of feature in internal units squared.
ESRI
Positive real numbers that are automatically generated.
Ice Mass
378
Resolution
0
Resolution
Coded Value
Default value
Duplicate
Integer
Elevation
ElevationRange
Range
Default value
Default value
Double
FType
ElevationRange
Range
Default value
Default value
Double
378
FCode
37800
Ice Mass FCode
Coded Value
Default value
Duplicate
Integer
VisibilityFilter
0
VisibilityFilter Domain
Coded Value
Default value
Duplicate
Integer
SwampMarsh
466
Resolution
0
Resolution
Coded Value
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Integer
Elevation
ElevationRange
Range
Default value
Default value
Double
FType
ElevationRange
Range
Default value
Default value
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466
FCode
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SwampMarsh FCode
Coded Value
Default value
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Integer
VisibilityFilter
0
VisibilityFilter Domain
Coded Value
Default value
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Estuary
493
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0
Resolution
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Elevation
ElevationRange
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Default value
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FType
ElevationRange
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Default value
Double
493
FCode
49300
Estuary FCode
Coded Value
Default value
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0
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Coded Value
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Playa
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0
Resolution
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Default value
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FType
ElevationRange
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Default value
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FCode
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Playa FCode
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LakePond
390
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0
Resolution
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Elevation
ElevationRange
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Default value
Double
FType
ElevationRange
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Default value
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390
FCode
39004
LakePond FCode
Coded Value
Default value
Duplicate
Integer
VisibilityFilter
0
VisibilityFilter Domain
Coded Value
Default value
Duplicate
Integer
Visibility
visibility
Integer
10
10
0
Shape_Leng
SHAPE_Leng
Double
19
0
0
Reservoir
436
Resolution
0
Resolution
Coded Value
Default value
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Integer
Elevation
ElevationRange
Range
Default value
Default value
Double
FType
ElevationRange
Range
Default value
Default value
Double
436
FCode
43600
Reservoir FCode
Coded Value
Default value
Duplicate
Integer
VisibilityFilter
0
VisibilityFilter Domain
Coded Value
Default value
Duplicate
Integer
FID_leasm2
FID_leasm2
Integer
10
10
0
AREA
AREA
Double
19
0
0
PERIMETER
PERIMETER
Double
19
0
0
LEASM2_
LEASM2_
Integer
9
9
0
LEASM2_ID
LEASM2_ID
Integer
9
9
0
BLOCK
BLOCK
String
3
0
0
LAW
LAW
SmallInteger
4
4
0
NHDWaterbodyToMeta
Relationship
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/.
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.
Shapefile
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0
FALSE
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20260930