The court may, from time to time, order the petitioners to pay into court, or as the court may direct, such amounts at a flat rate per acre according to the area owned by each within the bounds of the district as may be necessary to pay costs and expenses theretofore accrued, such amount to be repaid from the drainage fund to the petitioners in equal sums as were received together with interest thereon at the rate of six per centum per annum by order of the court when, and if the bonds of the district are sold, or the drainage fund otherwise provided and such order to pay into court when entered, shall have the force and effect of a judgment, and it shall be docketed in the judgment docket of the court of the county in which the petition was filed by the clerk thereof, if not paid within thirty days from the entry of the order. Ten days’ notice, however, shall be given by the clerk to each person affected thereby, of such order of the court.