Tri-Basin NRD is committed to sustaining groundwater supplies at levels equal to or greater than average groundwater levels in the period 1981-85. This commitment is also the objective of the Joint Action Plan for the Republican Basin portion of the district agreed to by the NRD and the Nebraska Department of Natural Resources in July 2004. This commitment to protect existing groundwater supplies also protects Nebraska’s credit for “imported water” in the Republican River Basin.