Draft chapter 161: Post-construction Stormwater Runoff Control
§ 161.03 Applicability
The 2026 draft's § 161.03 beside the current code's § 161.03: removed words are struck through, added words underlined.
Comparison with a draft: not adopted. The archive holds no public hearing, ordinance or vote adopting the recodified Code through the October 20, 2026 meeting packet. Until one is adopted, every page here compares the consolidated code with a draft that can still change: the revised draft with the October 6 changes is not in the archive.
A comparison with the August 2026 draft recodification prepared by Iowa Codification for the City. The draft has not been adopted and can still change; the current code (unofficial compilation) governs until a recodified Code is adopted. Matches between sections are made by machine from the texts and are reviewed where uncertain.
Wording changed minor wording (99% same words)
What changed
2. Any development within a preliminary or final plat approved prior to the adoption of this chapter will be deemed exempt from the requirements of this chapter. Re-subdivision of lots within an approved platted area and amendments to plats approved prior to the adoption of this chapter must conform to this chapter, unless determined by the City to be minor in nature.
3. For developments where the runoff from up to and including the 100-year storm event can be conveyed directly to local creeks without adverse impact to intervening property, no overbank flood protection control is required. In this case, the developer must show by hydrograph analysis that the runoff from the development will arrive at local creeks sufficiently ahead of the peak flow of the local creeks so as not to increase the peak flow of said creeks. Water
4. The following activities are exempt from this chapter:
A. Any logging or agricultural activity which is consistent with an approved soil conservation plan or a timber management plan approved by an appropriate agency.
B. Additions or modifications to single family homes.
C. Repairs to any
Word-level comparison of the current text with the draft's; spacing and paragraph breaks come from the documents' text. Footnotes are left out.
Current code
§ 161.03 Applicability
1. This chapter is applicable to all land-disturbing activities greater than one acre or part of a larger common plan of development. In addition, this chapter also applies to all applications for site plans or subdivisions that are less than one acre, and are commercial, industrial or multi-family residential uses as defined by the Tiffin Zoning Code, unless requirements of this chapter have been met through approved use of an off-site location.
2. Any development within a preliminary or final plat approved prior to the adoption of this chapter will be deemed exempt from the requirements of this chapter. Re-subdivision of lots within an approved platted area and amendments to plats approved prior to the adoption of this chapter must conform to this chapter, unless determined by the City to be minor in nature.
3. For developments where the runoff from up to and including the 100-year storm event can be conveyed directly to local creeks without adverse impact to intervening property, no overbank flood protection control is required. In this case, the developer must show by hydrograph analysis that the runoff from the development will arrive at local creeks sufficiently ahead of the peak flow of the local creeks so as not to increase the peak flow of said creeks. Water quality volume quality, channel protection volume, and treatment are not exempt.
4. The following activities are exempt from this chapter:
A. Any logging or agricultural activity which is consistent with an approved soil conservation plan or a timber management plan approved by an appropriate agency.
B. Additions or modifications to single family homes.
C. Repairs to any storm water BMPs deemed necessary by the City.
2026 draft
§ 161.03 Applicability
1. This chapter is applicable to all land-disturbing activities greater than one acre or part of a larger common plan of development. In addition, this chapter also applies to all applications for site plans or subdivisions that are less than one acre, and are commercial, industrial, or multi-family residential uses as defined by the Zoning Code, unless requirements of this chapter have been met through approved use of an off-site location.
2. Any development within a preliminary or final plat approved prior to the adoption of this chapter will be deemed exempt from the requirements of this chapter. Re-subdivision of lots within an approved platted area and amendments to plats approved prior to the adoption of this chapter must conform to this chapter, unless determined by the City to be minor in nature.
3. For developments where the runoff from up to and including the 100-year storm event can be conveyed directly to local creeks without adverse impact to intervening property, no overbank flood protection control is required. In this case, the developer must show by hydrograph analysis that the runoff from the development will arrive at local creeks sufficiently ahead of the peak flow of the local creeks so as not to increase the peak flow of said creeks. Water quality, volume quality, channel protection volume, and treatment are not exempt.
4. The following activities are exempt from this chapter:
A. Any logging or agricultural activity which is consistent with an approved soil conservation plan or a timber management plan approved by an appropriate agency.
B. Additions or modifications to single family homes.
C. Repairs to any stormwater BMPs deemed necessary by the City.
Back to draft chapter 161 · All changes
Data last updated October 22, 2026. Built from the archive's documents; see how the data is built.