Indiana Code Title 36. Local Government § 36-9-29.1-14

Sec. 14. (a) For the purpose of raising money to pay all bonds issued under section 12 of this chapter and the interest on them, the city-county legislative body shall levy each year a special tax upon all the property of the flood control district, in such manner as to meet and pay the principal of the bonds as they severally mature, together with all accruing interest.  The tax so levied each year shall be certified to the fiscal officers of the consolidated city and the county before August 2 in each year.

(b) The tax levied and certified shall be estimated and entered upon the tax duplicate by the county auditor, and shall be collected and enforced by the county treasurer, in the same manner as state and county taxes are estimated, entered, collected, and enforced.  As the tax is collected by the county treasurer, it shall be accumulated and kept in a separate fund to be known as the “flood control district bond fund,” and shall be applied to the payment of the flood control district bonds and interest as they severally mature and to no other purpose.  All accumulations before their use for the payment of bonds and interest shall be deposited, at interest, with the depository or depositories of other funds in the consolidated city, and all interest collected on them belongs to the fund.