Proposed Stormwater Management Criteria Update

The City of Manhattan is considering the adoption of an updated Stormwater Management Criteria and related Standard Drawings and Specifications for stormwater infrastructure. These new documents, once finalized and adopted, would replace the existing Stormwater Management Criteria that have been in place since 1994.

In addition, the City is proposing to adopt updated Standard Drawings and Construction Specifications which, when finalized, would supersede those currently in effect.

A public comment period was held in the fall of 2022. This comment period included two public meetings held on October 18, 2022. A second public comment period is now open to review changes made in response to comments and additional feedback. Revised materials are posted on this webpage, including explanations of changes made.

The second public comment period for these proposed changes is open until Thursday, September 7, 2023. Comments or questions regarding these proposed standards should be sent to Bill Heatherman, Stormwater Compliance Engineer, by email or by phone at (785) 587-4578. All comments are requested in writing.

An amendment to the City’s Post-Construction Best Management Practices manual also has been posted for review. This amendment makes some related changes to align with the proposed Stormwater Management Criteria.

Notice of Commission Work Session

A presentation regarding the proposed standards will be made to the City Commission during a legislative work session at 6 p.m. Tuesday, August 22, 2023 in the City Commission Room at City Hall, 1101 Poyntz Ave. Presentation materials will be posted with the work session agenda. No action will be taken during this work session.

City staff anticipate presenting the final proposed criteria for final action at a City Commission meeting in September or October 2023.

Proposed Criteria and Standards (Final Draft)

Supporting Materials