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MHFD is going remote (temporarily). Public safety is MHFD’s primary concern. To ensure the wellbeing of our employees, MHFD staff will be working remotely for the foreseeable future. In doing so, we will live up to our social responsibility to prevent the COVID-19 from spreading further, while ensuring business continuity that supports our communities and the economies in which we operate. Wishing everyone health and safety during these unprecedented times.

USDCM Vol. 3 Updates

USDCM Vol. 3 Ch. 4 Update

Overview and Purpose

The Urban Storm Drainage Criteria Manual (USDCM), Volume 3, first released in 1992, has been updated several times over the course of 18 years as stormwater quality practices advance.  MHFD is currently updating chapters 4 and 6 which cover the design and maintenance of stormwater best management practices (BMPs), also referred to as stormwater control measures (SCMs). This update is an open collaborative process with over 70 stakeholders including local and state governments, academics, consultants, engineers, landscape architects, suppliers, trade associations, manufacturers, and contractors.


The goals of this effort include engaging a large and diverse group of stakeholders to identify gaps, update the criteria, and provide clear guidance on the intent of the criteria while allowing for flexibility and innovation. Stakeholder groups for the V3Ch4 update include: MS4 Design Standards, Grass Buffers & Grass Swales, Bioretention / Sand Filters, Green Roofs (or Blue Roofs), Extended Detention Basins, Retention Ponds, and Constructed Wetland, Permeable Pavements, and Proprietary SCMs & Underground BMPs.

Stakeholder Involvement

February 17, 2021 @ 2:00 – 3:00 PM – Permeable Pavements




Past Stakeholder Meetings

01/13/2021 – Bio Retention & Sand Filters

Video | Meeting Minutes

10/14/2020 –  Manufactured Treatment Devices

Video | Meeting Minutes

8/6/2020 – EDBs, RPs, and CWPs

Video | Meeting Minutes

7/9/2020 – Grass Buffers & Grass Swales

Video | Meeting Minutes

6/24/2020 – MS4 Design Standards

Video  | Meeting Minutes

3/17/2020 – Stakeholder Kickoff Meeting Not recorded – Kick off meeting notes only

Meeting Minutes

Additional Information

To request additional information about the update: please contact Morgan Lynch, P.E., CFM  at

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