| description:
|
Selected major rivers were extracted from all rivers and streams in the USGS 1:2,000,000 Digital Line Graphs (DLG) dataset. The major rivers include the Copper, Susitna, Kuskokwim, Yukon, Koyukuk, Kobuk, Noatak, and Colville Rivers. Set these rivers to the hierarchy attribute to "1". To access the complete statewide DLG dataset, refer to the "Rivers, 1:2,000,000" metadata.
New to this coverage is a second hierarchical level of streams. These streams were pulled from the 1995 navigability coverage. This coverage, however, does not represent which streams are considered navigable by the state. The second hierarchy was added for cartographic purposes only - to provide a more complete river drainage layer on statewide maps.
Purpose:
The purpose of this coverage is to map the major streams without the burden of reselecting or mapping all other streams. Though the resolution is 1:2,000,000, it is ideal for general river reference for mapping 8.5" x 11" maps of the state; The user should reselect for hierarchy = "1" for this scale of mapping. |