| snippet:
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Alaska NHD Flowline data only. Important: This data is not wall to wall regional NHD data. It has been selected based on a regional AOI where WBD HUC 8 touches National Forest Lands. NHDFlowlines consist of routes that make up a linear surface water drainage network. Flowlines have a reach code and a measure, allowing for the establishment of upstream/downstream relationships. This network allows for powerful analysis and modeling capabilities. Each Feature type is attributed with descriptive information by an Fcode. The NHD provides a true network that supports the analysis of any type of movement (for example, navigation, sediment transport, and effluent dispersion) by surface waters. Further information and data download are available at http://nhd.usgs.gov/ |
| summary:
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Alaska NHD Flowline data only. Important: This data is not wall to wall regional NHD data. It has been selected based on a regional AOI where WBD HUC 8 touches National Forest Lands. NHDFlowlines consist of routes that make up a linear surface water drainage network. Flowlines have a reach code and a measure, allowing for the establishment of upstream/downstream relationships. This network allows for powerful analysis and modeling capabilities. Each Feature type is attributed with descriptive information by an Fcode. The NHD provides a true network that supports the analysis of any type of movement (for example, navigation, sediment transport, and effluent dispersion) by surface waters. Further information and data download are available at http://nhd.usgs.gov/ |
| accessInformation:
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USGS - National Geospatial Technical Operations Center (NGTOC) |
| thumbnail:
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| maxScale:
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5000 |
| typeKeywords:
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[] |
| description:
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<DIV STYLE="text-align:Left;"><DIV><P><SPAN>The USGS National Hydrography Dataset (NHD) Downloadable Data Collection from The National Map (TNM) is a comprehensive set of digital spatial data that encodes information about naturally occurring and constructed bodies of surface water (lakes, ponds, and reservoirs), paths through which water flows (canals, ditches, streams, and rivers), and related entities such as point features (springs, wells, stream gages, and dams). The information encoded about these features includes classification and other characteristics, delineation, geographic name, position and related measures, a "reach code" through which other information can be related to the NHD, and the direction of water flow. The network of reach codes delineating water and transported material flow allows users to trace movement in upstream and downstream directions. In addition to this geographic information, the dataset contains metadata that supports the exchange of future updates and improvements to the data. The NHD supports many applications, such as making maps, geocoding observations, flow modeling, data maintenance, and stewardship. For additional information on NHD, go to http://nhd.usgs.gov/.</SPAN></P></DIV></DIV> |
| licenseInfo:
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<DIV STYLE="text-align:Left;"><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> |
| catalogPath:
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| title:
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NHDFlowline_Alaska |
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| tags:
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["Reservoir","Spring / Seep","Stream / Water","Reach Code","Swamp / Marsh","Lake / Pond","Hydrography","Canal / Ditch","Artificial Path","FWHydrography"] |
| culture:
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en-US |
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| guid:
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| minScale:
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150000000 |
| spatialReference:
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