The layers in this group include sensitive regions of North Dakota.
Layers include a variety of land use classifcations that are vulnerable to oil spills. Layers include:

Rivers and Streams - Hydrography 100k

Community and NonCommunity Well Head Protection Areas:  source water protection areas in North Dakota for drinking water supplies

Surficial aquifers: major glacial-drift aquifers which are considered to have the greatest potential for yielding significant quantities of water for municipal, industrial, and agricultural purposes. They underlie an area of about 8,900 square miles. It is estimated that about 66 million acre-feet of water is stored in these aquifers.

National Wildlife Refuges:  lands and waters administered by the U.S. Fish and Wildlife Service (USFWS) in North America, U.S. Trust Territories and Possessions. It may also include inholdings that are not administered by USFWS.

National Grasslands: national grasslands and national forests owned and managed by the U.S. Forest Service in North Dakota.

Trust Lands: Land held in trust by the United States of America for an individual Native American refers to land accepted by the federal government to be protected and be under the jurisdiction of the United States of America for the benefit of an individual Native American.

Water Supply Areas: Represents the borders for the Southwest Water Pipeline (SWPP), Northwest Area Water Supply (NAWS), and the Western Area Water Supply (WAWS) projects and service areas
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