Flagler, Colo.-based High Plains Banking Group is acquiring The First National Bank of Hugo-Limon, Colo..High Plains Banking Group is the parent company of High Plains Bank. High Plains has $445.8 million in assets and five branches. The $146 million First National Bank of Hugo-Limon has three branches. Both banks are based in eastern Colorado.The deal is expected to close in either the first or early second quarter of this year. The price of the deal was not disclosed. Washington, D.C.-based Olson Palmer was financial adviser to High Plains Banking Group.