Hydrology/MS_DamLines_2009 (MapServer)

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Service Description: Dam-Lines in the United States This dataset is provided as a polyline shapefile. According to the HSIP Tiger Team Report, a dam is defined as a "water barrier or an embankment built across the course of a stream or into a body of water to control and/or to impound the flow of water (breakwater, dike, jetty)." This dataset is based on the U.S. Army Corps of Engineers (USACE) National Inventory of Dams (NID) and the United States Geological Survey (USGS) National Hydrography Dataset (NHD). Records in the NID attributed as "Dams" were extracted by TGS under the classification of a maximum capacity of at least 2800 acre feet and/or classified as a "High Hazard" by using the query (([max_stor]>=2800) or ([hazard]="H")). Dam locations were digitized using any combination of ortho imagery, topographic DRGs, NAVTEQ streets, NHD flowlines, NHD landmarklines, TIGER hydrography, contact with authoritative sources or web research. A line was created by tracing the crest of the dam using referencing imagery and the NHD flowlines. Entities classified as both MaxCapacity and High Hazard are represented once. Text fields in this dataset have been set to all upper case to facilitate consistent database engine search results. The currentness of this dataset is indicated by the [GEODATE] attribute. Based upon this attribute the oldest record dates from 01/18/2007 and the newest record dates from 02/06/2009.

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Layers:

MS_DamLines_2009 (0)

Description:

Service Item Id: e1a9d2ae7d74489aae6798e095b89f1a

Copyright Text: U.S. Army Corps of Engineers (USACE) National Inventory of Dams (NID), United States Geological Survey (USGS) National Hydrography Dataset (NHD), MARIS

Spatial Reference: 102609 (3814)

Single Fused Map Cache: false

Initial Extent:

Full Extent:

Units: esriMeters

Supported Image Format Types: PNG32,PNG24,PNG,JPG,DIB,TIFF,EMF,PS,PDF,GIF,SVG,SVGZ,BMP

Document Info:

Supports Dynamic Layers: true

MaxRecordCount: 1000

MaxImageHeight: 4096

MaxImageWidth: 4096

Supported Query Formats: JSON, geoJSON, PBF

Supports Query Data Elements: true

Min Scale: 0

Max Scale: 0

Supports Datum Transformation: true

Child Resources: Info Dynamic Layer

Supported Operations: Export Map Identify QueryLegends QueryDomains Find Return Updates Generate KML