Cook Inlet Basin Study Unit – Roads

nawqa_roads is a line coverage of the roads in the Cook Inlet Basin National Water-Quality Assessment (NAWQA) study unit. A statewide coverage of the road system was obtained from USGS 1:2,000,000 digital line graphs using techniques described by Domaratz and others (1982). The drainage basin boundaries of the Cook Inlet Basin, developed from 1:250,000 quadrangle maps, were used as the boundaries of this coverage.

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National Water Quality Assessment (NAWQA)—Cook Inlet Basin Study Unit
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Roads in the Cook Inlet Basin - National Water-Quality Assessment Program
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額外的資訊

欄位	值
最後更新	十二月 17, 2019, 10:23 (AKST)
建立	十二月 17, 2019, 10:23 (AKST)
狀態	Complete
Data Types	GIS
End Date	1997-09-15
ISO Topics	transportation
Geo-keywords	Kenai Peninsula, Southcentral