§ 59.206. Stormwater Level of Service.

Stormwater level of service shall be used to determine whether levels of service for Stormwater are adequate to support the impacts of new development, pursuant to Part 3 of this Chapter.

Stormwater Level of Service Standards. Stormwater level of service standards for new development shall be consistent with the Engineering Standards Manual as follows:

Facility	LOS
City Primary	Design Storm: 25 year/24 hour. Max. Flood Stage: 100 yr/3 day below flood elevation. Max. Hydraulic grade line (HGL): at gutter elevation for 25 year/6 hour storm.
City Secondary	Design Storm: 10 year/6 hour. Max. HGL: 1 foot below gutter elevation.
	Check Storm: 25 year/6 hour. Max. HGL: at gutter elevation.
City Tertiary	Design Storm: 10 year/6 hour. Max. HGL: at 1 foot below gutter elevation.
	Check Storm: 25 year/6 hour. Max. HGL: at gutter elevation.
Arterial Road	Roadway Section and Inlet Design: 10 year/6 hour storm. Minimum 2 feet between seasonal high water table and bottom of base course.
Collector Road	Roadway Section and Inlet Design: 5 year/6 hour storm. Minimum 1 foot between seasonal high water table and bottom of base course.
Minor Road	Roadway Section and Inlet Design: 3 year/6 hour storm. Minimum 1 inch between seasonal high water table and bottom of base course.
Travel Lane Spread	12 feet for all roads; roads with parking lane, width measured from face of curb to centerline of the outermost travel lane; clearance between design water surface and top of curb: 1 inch.
Maximum Run Distance	400 Feet to first Inlet.
Retention Ponds	Per Water Management District Critieria.
Detention Ponds	Per Water Management District Critieria.
Detention Ponds (landlocked basins)	Per Water Management District Critieria.
Floodprone Areas	Development allowed in 100 year floodplain with compensatory storage loss for floodplain and no development in the floodway.

 

;hn0; (Ord. of 9-16-1991, Doc. #25096; Ord. of 11-16-1992, Doc. #26149; Ord. No. 2017-4, § 1(Exh. A), 2-27-2017, Doc. #1702271206)