nawqa_strm is a line coverage of the streams and rivers in the Cook Inlet
Basin National Water-Quality Asessment (NAWQA) study unit. The coverage
was created using 1:2,000,000 digital line graphs (DLG).
The purpose of this coverage is (1) to present a general overview of the number of streams and rivers located in the Cook Inlet watershed and (2)to serve as a guide for selecting water-quality sampling sites.
Procedures_Used:
The coverage was created by USGS and Alaska Department of Natural Resources (ADNR) personnel using USGS 1:2,000,000 digital line graphs (DLG). Procedures followed were those outlined by Domaratz and others (1982).
Revisions:
No revisions are planned for this dataset. If stream and river data do become available at smaller scales, the dataset would probably be updated.
Reviews_Applied_to_Data:
Coverage was reviewed by Roy Glass. An editorial review of the documentation was done by Liska Snyder.
Related_Spatial_and_Tabular_Data_Sets:
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Other_References_Cited:
Domaratz, M.A., Hallam, C.A., Schmidt, W.E., and Calkins, H.W., 1982, Digital line graphs from 1:2,000,000-scale maps: U.S. Geological Survey Circular 895-D, 40 p.
Notes:
None
No updates are planned.
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Point_of_Contact USGS-WRD
The coverage was created from 1:2,000,000 DLG's. Caution should be used if the coverage will be used on smaller scale maps.
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Unknown
In this coverage, standard items are used in the arc attribute table. Two additional items were added: MAJOR1 and MINOR1. MAJOR1 indicates if the river is one of the major rivers of Alaska - Copper, Susitna, Kuskokwim, Yukon, Koyukuk, Kobuk, Noatak, or Colville. MINOR1 indicates that the river is not one of the major rivers of Alaska. The Susitna River is the only river classified as MAJOR = 1 within this coverage.