A district formed under this part is a body corporate with powers to contract; to sue and be sued; to exercise the right of eminent domain; to apportion administrative costs and benefit charges for river management and related facilities among the local units of government members, which costs shall be payable from general funds or taxes raised by the local units of government; to collect revenues for services rendered by the exercise of its functions; to issue bonds; to apply for and receive grants, gifts, and other devises from any governmental agency or from the federal government; and to exercise other powers as necessary to implement this part. The river management district shall not have direct taxing power.