KNI_NWR

Tags  Koyukuk, Nowitna, Innoko, National Wildlife Refuge, NWR, USFWS, FWS, boundary, generalized, unofficial

Summary

This feature class depicts simplified boundaries of the Koyukuk/Nowitna/Innoko National Wildlife Refuge complex in Alaska for quick reference.

Description

These polygon features were generalized from U.S. Fish and Wildlife Service cadastral data, specifically the Approved Acquisition Boundaries (available at https://ecos.fws.gov/ServCat/Reference/Profile/131755). A subset of this national data set was first exported to include only features within the Alaska Region. This new feature class was then projected to a local coordinate system, NAD83 Alaska Albers. 
Polygons representing Koyukuk, Nowitna, and Innoko NWRs were individually exported to new feature classes, which were then simplified using Esri's Generalize tool, with a simplification tolerance of 75, 25, and 50 meters, respectively. For Innoko NWR, small polygons less than 100 square kilometers were first removed using Esri's Eliminate Polygon Part tool. Prior to exporting as geoJSON, all three feature classes were merged and projected from NAD83 Alaska Albers to WGS 84.
The resulting feature class depicts simplified boundaries of the Koyukuk/Nowitna/Innoko National Wildlife Refuge complex in Alaska and warrants the following limitations:
 1) must not be used for official or legal  purposes such as acreage computations or the field location of Refuge boundaries.
 2) intended to be used only for small-scale (<1:5,000,000) depiction of the Refuge boundaries.
If you require the official, full-resolution boundaries of the National Wildlife Refuges in Alaska, you may download them at https://www.fws.gov/r7/nwr/Realty/data/LandMappers/Public/Help/HTML/NationalWildlifeRefugeandWildern.html

Credits

USFWS, Alaska Region

Use limitations

For small-scale, general use/depiction of Refuge boundaries. Do not use for official or legal purposes. Do not use for legal or official acreage computations.

Extent

Scale Range