Welcome to the Website of the Nebraska Chapter of the Sierra Club and Its Missouri Valley and Bluestem Groups. The Sierra Club's grassroots advocacy has made it America's most influential environmental organization. There are over 3000 members in Nebraska. The Missouri Valley Group usually goes by "MoValley" Group or MVG. While it covers all of northeastern Nebraska, its "local" activities are centered in the Greater Omaha area. Bluestem is based in Lincoln and it includes the southeastern region of the state, including Nebraska City, Hebron, York, and David City. Omaha, Nebraska