Project Summary

Project Name: Drainage master plan update Project Number: N-098 Priority: Optimal Reference: 1-2-03100-615 CC310-09 Submitted by: I. Leung, Director of Engineering

Executive Summary

This project was included in the 2023-2027 Financial Plan. The purpose of this project is to update the Town’s Drainage Master Plan, which was last updated in 2017. General updates would include investigative work to rectify missing data in the Town’s drainage infrastructure and revised network flows to align with the updated Official Community Plan. In addition, the revised master plan would include a lens on climate change.

Business problem and opportunity

Town master plans should be completed once the Official Community Plan is updated. This means the project would commence in 2025. The $10,000 grant expires in Spring 2025, meaning an extension will need to be applied for. Should OCP progress be favourable, this project could commence later in 2024 or early 2025 with early project approval.

Proposed project objectives

Investigate missing field data in the Town’s drainage infrastructure for inclusion in the stormwater model
Update rainfall intensity data including the Town’s intensity/duration/frequency curve complete with recommended climate change factors
Include climate change factors into the Town’s stormwater model to determine its effects to the Town’s infrastructure
Update the Town’s priority storm drain replacement projects
Investigate integrated stormwater management opportunities within the Town’s natural infrastructure
Inform recommended changes to other bylaws, such as the Subdivision and Development Servicing Bylaw and the DCC Bylaw.

Business risks

An outdated stormwater model may underrepresent the performance of the drainage system, especially if climate change is incorporated into the model.

Proposed sources of funding

Provincial grant (Provincial Infrastructure Planning-$10,000) 1-1-00420-111
DCCs (max $198,000) 1-1-00500-184
Reserve account – Local Government Climate Action Program 1-1-00500-185 (if required)

Costs and benefits

Costs	FY1	FY2	FY3	FY4	FY5	5-year Total
Capital						0
Operational	0	208,000	0	0	0	208,000
Total	0	208,000	0	0	0	208,000

Benefits
Tangible	Updated stormwater management data to reflect the updated OCP
Intangible	In line with the Town’s Strategic Plan on Environmental Stewardship

Recommendation

THAT the Committee recommend the 2024-2028 Financial Plan include Drainage Master Plan Update in 2025 to be funded by DCCs and provincial grants.