Buffalo NSR, Arkansas
http://www.nps.gov/buff/ Class I-II
Saint Croix NSR, Wisconsin
http://www.nps.gov/sacn/ Class I-II
Niobrara NSR, Nebraska
http://www.nps.gov/niob/ Class I-II
Current River NSR, Missouri
http://www.nps.gov/ozar/ Class I-II
New River Gorge NSR, West Virginia
http://www.nps.gov/neri/ Class III-IV
