Storm Water Drainage Policy for Development.

Purpose

Section 1199.7 of the City of Hamilton Subdivision Regulations, "Requirement for Storm Drainage System", stipulates that "every development shall be provided with a storm drainage system that provides adequate, complete and satisfactory drainage service for the entire area being platted for all projected land uses and otherwise meeting the approval of the government officials having jurisdiction."

This section stipulates that the Director of Engineering must finally approve the drawings, plans and specifications for the drainage system. Natural streams and water courses should be left as undisturbed as practical. All natural streams and water courses shall be inspected by the Engineering Department and the developer’s engineer prior to final plan approval. Any necessary stabilization and erosion protection deemed necessary by the Director of Engineering shall be included in the development plans.

Responsibilities

It is the responsibility of the developer's engineer to design this drainage system and it is the responsibility of the Director of Engineering to judge the adequacy of the design. The following has been written to clarify the standards that will be judged by the Director of Engineering as adequate. These should be considered minimum standards and certain conditions may require exceeding these standards.

Rainwater & Land Development

The Ohio Department of Natural Resources Rainwater and Land Development manual is a comprehensive source of general standards to use to avoid, minimize, or compensate for impacts to water resources. The manual is available for download (PDF) from the Ohio Department of Natural Resources website.