Project Summary N-098: Drainage master plan update
Update to the Town's 2017 Drainage Master Plan to include revised OCP data and climate change factors.
Project Summary: Drainage master plan update
Priority: Required Public Engagement: Consult Project Number: 1-2-03100-615 CC310-09 Submitted by: Ivan Leung, Director of Engineering Director: Ivan Leung, Transportation Services
Executive Summary
This project was included in the 2024-2028 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An outdated stormwater model may underrepresent the performance of the drainage system, especially if climate change is incorporated into the model.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 $4,600) 1-1-00420-111
- DCCs (max $90,800) 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 | 0 | 0 | 0 | 0 | 0 |
| Operational | 95,400 | 0 | 0 | 0 | 0 | 95,400 |
| Total | 95,400 | 0 | 0 | 0 | 0 | 95,400 |
| 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 2026-2030 Financial Plan include Drainage master plan update in 2026 to be funded by DCCs and provincial grants.