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Service 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.
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Copyright Text: National Hydrography Dataset (NHD)
Spatial Reference:
102100
(3857)
Single Fused Map Cache: false
Initial Extent:
XMin: -8725299.829771055
YMin: 4545566.665261845
XMax: -8329355.925328947
YMax: 4717401.144052408
Spatial Reference: 102100
(3857)
Full Extent:
XMin: -8677894.7812
YMin: 4376604.993100002
XMax: -8368543.8368
YMax: 4729935.723099999
Spatial Reference: 102100
(3857)
Units: esriMeters
Supported Image Format Types: PNG32,PNG24,PNG,JPG,DIB,TIFF,EMF,PS,PDF,GIF,SVG,SVGZ,BMP
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Keywords: Virginia,Chesapeake Bay,Hydrography,Stream / Water,Lake / Pond,Canal / Ditch,Reservoir,Spring / Seep,Swamp / Marsh,Artificial Path
AntialiasingMode: None
TextAntialiasingMode: Force
Supports Dynamic Layers: false
MaxRecordCount: 1000
MaxImageHeight: 4096
MaxImageWidth: 4096
Supported Query Formats: JSON, AMF, geoJSON
Min Scale: 0
Max Scale: 0
Supports Datum Transformation: true
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