Upper Big Blue Natural Resources DistrictPosition: David Eigenberg – General Manager Phone: Phone: (402) 362-6601 / Fax: (402) 362-1849 Email Address: https://gmdausa.org/index.php/nebraska/deigenberg@upperbigblue.orgMailing Address: 105 Lincoln Avenue / York NE 68467 Homepage: Upper Big Blue NRD