(a) A drainage basin development fee shall be levied and assessed upon each vacant and undeveloped lot and parcel of land within the city for the purpose of funding certain regional facilities. The drainage basin development fee shall be calculated based on acreage of the parcel and the square footage of the impervious area. The first portion of the drainage basin development fee based on the acreage shall be assessed at $1,242 per acre, and the second portion of the drainage basin development fee shall be assessed at $0.14 per square foot of impervious area for nonresidential users and $0.48 per square foot of lot size for residential users effective January 1, 2019.

For each connection to the water or sanitary sewer system, payment for the portion of the drainage basin development fee based on the acreage of the parcel shall be paid in full prior to subdivision platting. In addition, payment for the portion of the drainage basin development fee based on the impervious area shall be paid in full prior to application for the building permit. If a connection to the water or sanitary system is not required, the drainage basin development fee shall be paid in full at time of development application. A certificate of occupancy shall not be issued until the drainage basin development fee has been paid in full.

Nonresidential drainage development fee

($1,242 x total lot acreage) + ($0.14 x square feet of impervious area)

Residential drainage development fee

($1,242 x total lot acreage) + ($0.048 x square feet of impervious area)

The developer may be eligible for stormwater fee credits if the developer or their engineer can prove through an analysis, approved by the general manager with the guidance of the urban drainage flood control district, that a portion of runoff generated by the impervious area present on the site is effectively mitigated by receiving pervious area.

(b) Land dedicated to the city for public purposes pursuant to an approved annexation agreement shall be exempt from fees required by this subsection. This exemption shall not apply to land dedicated for easements, rights-of-way, streets, highways or storm drainage, unless otherwise provided in the annexation agreement.

(c) The portion of the drainage basin development fee based on the acreage shall be computed on the gross acreage included within a platted lot or parcel of land. For purposes of this subsection, the boundaries of a platted lot or parcel of land shall be deemed to extend to the centerline of the street or streets abutting such lot or parcel.

(d) For applicable sites, the general manager shall cause to be made an environmental study which lists by location any areas which require special drainage facilities. Such areas shall include:

(e) The general manager will prepare an overall plan for the construction, operation and maintenance of drainage facilities to address such environmental requirements in the most cost-effective manner. Where appropriate, the costs of such facilities shall be added to the drainage basin development fee assessed under this section. (Code 1979, § 17-20(a); Ord. No. 2023-44, § 43, 9-11-2023; Ord. No. 2019-83, § 8, 11-4-2019; Ord. No. 2018-57, § 11, 10-29-2018; Ord. No. 2017-51, § 5, 10-30-2017; Ord. No. 2016-51, § 4, 11-14-2016; Ord. No. 2006-65, § 5, 11-13-2006; Ord. No. 2006-16, § 3, 3-20-2006; Ord. No. 2005-74, § 1, 10-10-2005; Ord. No. 2005-02, § 3, 2-7-2005; Ord. No. 2002-66, § 1, 11-18-2002)