Vanguard Natural Resources, LLC (VNR) is a limited liability company focused on the acquisition and development of oil and natural gas properties in the United States. Through its operating subsidiaries, the Company owns properties, and oil and natural gas reserves primarily located in nine operating basins. Its operating basins include Green River Basin in Wyoming; the Piceance Basin in Colorado; the Permian Basin in West Texas and New Mexico; the Gulf Coast Basin in Texas, Louisiana and Mississippi, and the Big Horn Basin in Wyoming and Montana. Its operating basins also include the Arkoma Basin in Arkansas and Oklahoma; the Williston Basin in North Dakota and Montana; the Wind River Basin in Wyoming, and the Powder River Basin in Wyoming. The Company's subsidiaries include Vanguard Natural Gas, LLC, VNR Holdings, LLC, Vanguard Permian, LLC, Vanguard Operating, LLC, Encore Clear Fork Pipeline LLC, LRR Energy, L.P. and LRE GP, LLC.