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Water Services

Stormwater Management Manual

The 2016 Stormwater Management Manual revisions became effective on February 1, 2016. For projects that applied under the previous regulations, the following deadlines must be met:

  • Grading Permit Application submitted to the Metro Stormwater Design Review Section by: 1/29/16, and
  • Grading Permit Application passes Sufficiency Review by: 3/31/16, and
  • Grading Permit Application passes Technical Review (approved) by: 7/31/16

Reminder: After Technical Review approval, a site will have 6 months to attend a Pre-construction meeting and then 6 months from the date of the Pre-construction meeting to obtain a Grading Permit. Failure to meet those time frames will result in the Technical Review/Plans approval being “expired” (per Stormwater Management Manual Vol. 1 - Section 4.3.4).

Please see the following presentation for more information about the 2016 Stormwater Management Manual (SWMM) Revisions:

2016 Stormwater Management Manual Revision Presentation

2016 Stormwater Management Manual

Former Stormwater Management Manual Volume 1

If a project has sufficient site limitations that preclude it from meeting the Low Impact Development requirement, they will need to submit a Low Impact Development Waiver Application electronically to Steve Mishu

You may be eligible for a reduction in your Stormwater User Fee! Please see the Stormwater User Fee Credit Manual for more information.