USGS Small-scale Dataset - Global Map: 1:1,000,000-Scale Streams of the United States 201406 FileGDB 10.1
Vydavatel U.S. Geological Survey, Department of the Interior
Datum vydání před téměř 10 roky
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This map layer includes Global Map data showing streams in the United States, Puerto Rico, and the U.S. Virgin Islands. The data are a modified version of the National Atlas of the United States 1:1,000,000-Scale Streams of the United States; that file was produced primarily from the Medium-Resolution and High-Resolution National Hydrography Dataset NHDFlowline feature classes, through feature selection and cartographic generalization based on reference to published small-scale ancillary data sets.