Alaska
Geospatial Data Clearinghouse


US Geological Survey
US Fish &Wildlife Service
Arctic National Wildlife Refuge (ANWR)
EARTH
AND BIOLOGICAL SCIENCE-DATA WEBSITE
WATER BASIN BOUNDARIES
North Cental Arctic National Wildlife Refuge
This data is hydrographic in nature and is derived from U.S. Geological Survey (USGS) maps which are operationally used for delineation of drainage basin boundaries. The boundaries are a finer-scale delineation of drainages within the USGS Hydrologic Unit Codes 19060501, 19060502, and 19060503 of the Arctic Refuge.
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