For the purpose of funding any interim debentures, any bond or bonds pledged as collateral security to secure the payment of the interim debentures may be reissued without an election, and any bonds not previously issued but authorized to be issued at an election for a purpose the same as or encompassing the purpose for which the interim debentures were issued may be issued for such a funding. The bonds shall mature at such time or times as the board may determine, but in no event exceeding forty years from the date of either any of the interim debentures so funded or any of the bonds so pledged as collateral security, whichever date is earlier. Bonds for funding, including but not necessarily limited to any such reissued bonds, and bonds for any other purpose authorized by the Flood Control District Act may be issued separately or issued in combination in one series or more. Except as otherwise provided in Sections 63 and 64 N.M. Stat. Ann. § 72-18-63 and 72-18-64 of that act and in this section, any such funding bonds shall be issued as is provided for refunding bonds in Section 62 [72-18- 62 NMSA 1978] of that act and for securities in Sections 49 through 61 [72-18-49 to 72- 18-61 NMSA 1978] of that act.