ORS § 553.665
The treasurer shall keep a "Bond Fund" account or a "Bond and United States Contract Fund" account, as the case may be, into which shall be deposited all moneys arising from the sale of refunding bonds and from charges, assessments, taxes and levies until there is sufficient money in the fund to meet the next installment of principal and interest upon bonds of the subdistrict and to meet all payments for construction and other purposes to the United States. From the fund the treasurer shall pay moneys due as principal and interest on bonds as they mature and the bonds and coupons are presented and as payments to the United States fall due. Moneys received from the sale of bonds and otherwise for construction or acquisition of works by the subdistrict shall be deposited into a "Construction Fund." All other moneys received by the subdistrict shall be deposited into a fund known as the "General Fund," from which shall be defrayed all obligations of the subdistrict other than those in this section described. The Bond and United States Contract Fund accounts shall be devoted to the obligations of the subdistrict payable therefrom in the order of the priority of the creation of the obligations.
ORS 553.665