Del. Code tit. 7, § 4369

When in the opinion of the lagoon managers the amount of the tax levied to defray the cost of maintenance is either insufficient or excessive, they may raise or lower the same for the current and succeeding years with the consent of the Division of Watershed Stewardship. If the annual maintenance tax is so raised or lowered, it shall be apportioned to each landowner in accordance with § 4362 of this title and a new maintenance tax warrant shall be delivered to the appropriate receiver of taxes and county treasurer.