A southern Iowa development and conservation fund is created in the state treasury, to be administered by the southern Iowa development and conservation authority. The proceeds of the fund shall be used for the purposes specified in section 161D.11. The southern Iowa development and conservation authority may accept gifts, bequests, other moneys including, but not limited to, state or federal moneys, and in-kind contributions for deposit in the fund. The gifts, grants, bequests from public and private sources, state and federal moneys, and other moneys received by the authority shall be deposited in the fund and any interest earned on moneys in the fund shall be credited to the fund to be used for the purposes specified in section 161D.11. Notwithstanding section 8.33, any unexpended or unencumbered moneys remaining in the fund at the end of the fiscal year shall not revert to the general fund of the state, but the moneys shall remain available for expenditure by the authority in succeeding fiscal years.