Richmond Hill’s Stormwater System

The City of Richmond Hill’s stormwater system is comprised of approximately 620 kilometres of storm sewers, 18,000 catchbasins, 10,000 maintenance holes, and 1,000 storm culverts, 100 stormwater management ponds, 100 manufactured treatment devices and 90 low impact development features.

The City’s stormwater management system is interconnected with the York Region system that is predominately located within the Regional roads. The stormwater infrastructure within the City also interacts with the headwaters of the Don, Humber and Rouge River Watersheds.

Stormwater Master Plan

The City of Richmond Hill is undertaking a City-wide Stormwater Master Plan. The Master Plan is a long-term comprehensive study to ensure that stormwater is effectively managed in a way that protects Richmond Hill’s residents and property as well as the environment in a sustainable way. The outcome of this study will serve as a decision support tool for the prioritization of future capital works in a financially responsible manner.

The Master Plan Process

The Stormwater Master Plan is being conducted by T.Y. Lin International Canada Inc. following Approach No.1 of the Municipal Class Environmental Assessment (2024, as amended) under the Environmental Assessment Act. As the study progresses, the City will consult and engage with the public, Indigenous communities, government agencies and local advisory groups to shape the Master Plan and contribute towards the preferred solutions and recommendations. 

To facilitate community input, a Public Open House will be held tentatively in January of 2027. The notice of the open house will be made available on the City’s website and on the Stormwater Master Plan web page.

Results from this study will be documented through a number of presentations and reports that will be made available for a public review period. When available, residents, Indigenous communities and other interested persons or groups will be informed of when and where the documents can be reviewed.

How to get involved?

1. Find out more about the study by visiting the project website at: RichmondHill.ca/StormwaterMP.
2. Attend the future Public Open House session tentatively in January 2027 (exact date will be confirmed before the event and posted on the project website).
3. Should you have any questions or comments, require further information, or wish to be added to the study mailing list for future updates, please contact one of the following Study Team members:

Kate Northcott, P.Eng., PMP
Project Manager, Infrastructure Planning
City of Richmond Hill
kate.northcott@richmondhill.ca
905-771-2507

Rosalie Chung, P.Eng.
Consultant Project Manager
TYLin International Canada, Inc.
rosalie.chung@tylin.com
289-902-0387

We look forward to your involvement in this important project!

Personal information is collected under the authority of the Municipal Act 2001, S.O. 2001, c.25, and the Environmental Assessment Act, R.S.O 1990, c. E.18. This information will be used and/or disclosed for the purposes of compiling comments, responses and related activities for the assessment process related to the creation of the Stormwater System Master Plan.

Individuals who submit correspondence should be aware that any personal information in their communication will become part of the public record. The City will make it available to the public, unless the individual expressly requests the City to remove the personal information from the public record.  Questions about the collection of this information may be directed to Kate Northcott, Project Manager, Infrastructure Planning, 225 East Beaver Creek Rd, Richmond Hill, Ontario L4B 3P4, 905-771-2507.