After decades of disputes, eight states and 30 Indian tribes along the Missouri River have agreed on a compromise plan to share the river’s flow. The plan would, among other things, keep more water in upstream reservoirs in Montana and the Dakotas during dry times to boost recreation and protect fish and wildlife habitat, a shift applauded by the enviro group American Rivers. The plan also recommends that more land in the river watershed be purchased or put under conservation easement. The Army Corps of Engineers will now decide whether to accept the regional plan.