Feedback AboutHelpLogin
HomeAdvanced SearchBrowse
Details

.

Identification Information
Title: AK Hydro Streams in Southwest Alaska
Originator: US Geological Survey, National Hydrograpgy Dataset
Publication Date: 20140319
Website URL: http://seakgis.alaska.edu/data/SWAKHydro_Snapshot.zip
Resource(Server) URL: http://seakgis03.alaska.edu/rest/services/SWAKHydro_Streams/MapServer
Abstract: This dataset portrays the linear water features in Southwest Alaska. The layer also provides channel type information, stream class information and classifications particular to the State Anadromous Waters Catalog.
Purpose: The streams dataset provides channel type classification and stream-class information for forest resource planners, fisheries biologists, hydrologists, and ecologists. Channel types provide information on fish habitat utilization, fish habitat capability, and fisheries enhancement options. They also provide information on suitable stream crossing locations and design criteria for road drainage structures and are useful to evaluate potential sediment delivery and retention for cumulative watershed effects analysis. This particular version of the dataset was developed to submit to the National Hydrography Dataset (NHD). Specifically, stream arcs were extended to the low tide shoreline to ensure inclusion of thousands of feet of the most productive intertidal stream habitats for salmon. Without extending the stream arcs, all or nearly all of the "estuarine" streams channel types would be dropped from the USDA-FS WATER Module under development.
Progress: Completed
Frequency: As needed
Time Period of Content
Date Range
Begin Date: 20010101
End Date: 20140319
Currentness: Data is continually updated
West Bounding Longitude: -180.000000
East Bounding Longitude: 180.000000
North Bounding Latitude: 63.603055
South Bounding Latitude: 49.230804
Zoom to the resource envelope
Point of Contact
Organization: University of Alaska Southeast
Person: Mike Plivelich
Contact Position: AK Hydro Technical Steward
Address Type: mailing and physical
Address: 11120 Glacier Highway
City: Juneau
State: Alaska
Postal Code: 99801
Telephone: 616.920.7265
Email: mtplivelich@uas.alaska.edu
Browse Graphic
Browse Graphic URL: http://seakgis.alaska.edu/data/thumbnails/SW_Stream_LN.jpg
Browse Graphic Caption: Regional overview of the dataset
Browse Graphic Type: JPEG
Constraints
Access: None
Use: None
Security Classification System: None
Security Classification Name: Unclassified
Security Handling Description: None
Theme Keywords
Theme Reference: None
Theme Topics: river, channel, water, hydrology, stream, creek, rivers, watercourse, creeks, Alaska, Southwest Alaska, salmon, fish, streams, hydrography, habitat, hydrographic, AWC, Anadromous Waters Catalog, NHD, National Hydrography Dataset, Stream_LN, AK Hydro
Keywords
Theme Reference: ISO 19115 Topic Categories
Theme Keywords: inlandWaters
Place Keyword Thesaurus: None
Place Keyword: Alaska, Southwest Alaska
Data Quality Information
Logical Consistency Report: Original cover was vertically intergreated with lakes and shoreline cover. Arcs were digitzed in downstream direction.
Completeness Report: Essentially 100% of the Tongass National Forest has been mapped and classified at the 'Process Group' level. Some 50,000 stream miles are included in this data set. However, it should be noted that this underestimates total miles of stream on State and Private lands. Anticipate base stream miles on Tongass NF lands will increase by 5 to 10% over the next 2-3 years as missing streams are added. Field verification of stream channels, locations, etc. is likely higher in areas of the Forest slated for resource development. Areas not slated for development (i.e. wilderness, LUD II) have not been surveyed as rigorously.
Processing Steps
Step 1 Process Description: None
Step 1 Process Date: 20140319
Spatial Reference Information
Geodetic Model
Horizontal Datum Name: D North American 1983
Ellipsoid Name: GRS 1980
Semi-major Axis: 6378137.0
Denominator of Flattening Ratio: 298.257222101
Metadata Reference Information
Metadata Creation Date: 20150106
Organization: University of Alaska Southeast
Person: Mike Plivelich
Contact Position: AK Hydro Technical Steward
Address Type: mailing and physical
Address: 11120 Glacier Highway
City: Juneau
State: Alaska
Postal Code: 99801
Telephone: 616.920.7265
Email: mtplivelich@uas.alaska.edu
Metadata Standard Name: FGDC Content Standard for Digital Geospatial Metadata
Metadata Standard Version: FGDC-STD-001-1998
/geoportal/rest/document?f=html&id=%7BA5C0C111-7DCC-4749-9EE0-7E39BD94054E%7D
This Geoportal was built using the Geoportal Server. Please read the Disclaimer or Contact Us.