Flooding studies

In 2008, the town completed a Flood Prioritization Study looking at major open-channel waterways, streams, rivers and lakes to identify flood-sensitive areas in Oakville. 

One of the objectives of this study was to see all flood-sensitive areas in relation to one another and categorize areas as low, medium or high risk of flooding.

Now that the study is complete, the town is in a position to take advantage of provincial, federal or private flood reduction/mitigation funding programs should they come available.

The town is carrying out a Municipal Class Environmental Assessment evaluate mitigation and flood reduction options for Fourteen Mile Creek and McCraney Creek from Lake Ontario to Dundas Street. 

The study, which began in 2011, is being completed at a master plan level and is nearing completion, having detailed information of creek flood-prone sites and recommended options to help mitigate flood risk in these areas. These options include the following solutions:

  • culvert/bridge upgrades – replace/supplement at select creek crossings
  • flood proofing buildings through the use of flood protection berms
  • flow diversions
  • flood control via stormwater storage measures
  • combination of measures above

Next steps include finalizing the master plan and initiating site specific studies for the preferred solutions through the Class Environmental Assessment process. Timing is subject to budget approval and other town-wide priorities.

The town is carrying out a Municipal Class Environmental Assessment for a detailed assessment of mitigation and flood reduction alternatives for Lower Morrison and Lower Wedgewood Creeks.  This study builds upon the recommendations of the town-wide Flood Prioritization Study.

This Flood Mitigation Opportunities Study provides a detailed evaluation of flood-prone sites to determine the degree of flooding and assess the most effective flood mitigation options. The study also evaluates stormwater management design criteria for the planned growth of Midtown Oakville.

The study is being conducted in compliance with Schedule 'C' of the Municipal Class Environmental Assessment Process, which is approved under the Ontario Environmental Assessment Act.  

We have completed the Munn's Creek Flood Mitigation Opportunities Study. 

The study area included lands south of Upper Middle Road to the Morrison Wedgewood Diversion Channel. The purpose of the study was to assess impacts from riverine flooding, assess potential risks, and develop mitigation options.

The recommended solution to reduce flood risk includes the replacement of existing culvert crossings with larger structures, once the culverts have reached their end of service life.   The structures recommended for upgrades include:

  • McCraney Street West culvert
  • Miller Road culvert
  • Oakdale Drive to Onslow Court pedestrian culvert crossing.

The recommended culvert upgrades will also be designed to improve fish habitat and wildlife passage and enhance the ecological function of the Munn's Creek corridor.

We have completed the Sheldon Creek Flood Mitigation Opportunities Study to identify flood-prone sites to determine the most practical and responsible options to reduce flood risk.

Several alternatives were evaluated based on environmental, physical, social, and economic considerations. The options selected are a combination of berm construction and emergency preparedness.

The study was carried out in accordance with the requirements as described in the Municipal Engineers Association’s Municipal Class Environmental Assessment (EA) document, approved under the Ontario Environmental Assessment Act. 

Infrastructure projects

Munn's Creek Stabilization and Rehabilitation construction is underway. Work includes installation of stone bank protection and vegetative/habitat structures. This project is supported by the Canada Community-Building Fund (CCBF).

Work will happen in two phases:

  • Phase One: Miller Road to Culham Street (Oakdale Park) 
  • Phase Two: Upper Middle Road to Miller Road 

Phase One Construction

Construction between Culham Street and Miller Road was completed in fall 2021. Restoration, including tree planting and trail asphalting is also complete.

Phase Two - Construction and Restoration

Starting July 2022 (weather permitting), remaining creek improvements planned between Miller Road and Upper Middle Road will begin. Phase Two works includes:

  • stone bed and bank protection combined with softer vegetation stabilization measures
  • construction of fish and wildlife habitat features
  • comprehensive plantings including native trees and shrubs (approximately 280 trees and 400 shrubs to be planted to enhance the creek corridor).  

Phase Two creek design:

Contact

Diana Michalakos, B.Sc., C.E.T.
Project Lead, Capital Projects
905-845-6601, ext. 3904
diana.michalakos@oakville.ca

Shoreline protection improvements at Vista Promenade and Water's Edge Park, bordered by Bronte Heritage Waterfront Park to the west and Water's Edge Drive to the east, are now complete 

Improvements include replacement/repairs of the shoreline protection, landscaping improvements, and widening and asphalt paving of the existing pathway, providing a more accessible trail and shoreline.

The rehabilitation work was funded in part by the Canada Community-Building Fund (CCBF).

In fall 2022, the town began tree planting as part of the project's remaining work to replace trees that were removed to allow for construction.  

Tree Planting Plan

Contact

Diana Michalakos, B.Sc., C.E.T.
Project Lead, Capital Projects
tel: 905-845-6601, ext. 3904
diana.michalakos@oakville.ca

State of the Environment Report

The town's Environmental Sustainability Plan (ESP) is a framework for our environmental sustainability efforts. The State of the Environment Report (SOER) is a partner program to the ESP, which tracks select initiatives to provide an understanding of how we are doing with environmental sustainability.

Browse the four main categories below information on areas we're tracking, or check out our 2017 highlights report (pdf).

Active transportation

Active transportation refers to any form of human-powered transportation — walking, cycling, roller blading or skateboarding. Choosing active transportation instead of driving reduces air pollution, greenhouse gas emissions and traffic congestion. 

  • Oakville has 200.6 kilometres of active transportation routes.
  • In addition to expanding the network of routes, the town has invested in supporting cycling infrastructure. 

Ecological footprint

The ecological footprint is a measurement tool that tracks the environmental impact of human consumption. Oakville’s ecological footprint measures household consumption of food, transportation, housing, goods and services, and government services. Then, it shows the findings in terms of the land area needed to support that level of consumption in global hectares (gha) per person. 

  • The ecological footprint for Oakville has shown decreases since it was first measured in 2010.
  • The per capita ecological footprint for Oakville is 8.3 gha.

Trails

Oakville’s recreational trail system is an important asset that helps residents and visitors connect with the outdoors, stay active, and engage with the natural environment. Studies indicate that access to nature contributes to physical and mental wellbeing and overall health.

  • Oakville has one of the most extensive trail systems in Southern Ontario. Frequent additions of new trails has greatly expanded trail availability throughout the town.
  • In 2016, the town maintained 220.3 kilometres of recreational trails.

Transit

Public transit reduces the number of cars on the road improving air quality and lowering greenhouse gas emissions. Public transit is also, generally, a more cost effective choice and is better for the environment than traveling by car. 

  • Ridership data tells us how many people are using Oakville’s public transit system. In 2016, annual ridership reached 2.9 million trips which equals an average of 15 trips per Oakville resident.


Air quality

Exposure to air pollution can make it harder to breathe, irritate your lungs and worsen chronic diseases. Studies have shown that even minor increases in air pollution can cause small increases in emergency room visits, hospital admissions and deaths.

  • In 2016, 34 days were classified as posing a moderate health risk due to air pollution levels. The remaining days in the year were classified as low risk. Oakville experienced zero days at high risk levels.

Hard surfaces

How permeable a surface is lets us know how water moves through it. Water can either be:

  • absorbed by soil or natural cover (permeable), or
  • it can flow on top of hard surfaces such as roads, driveways, parking lots and most buildings (impermeable).

Water that does not soak into the ground is called runoff and can pick up debris or chemicals as it moves into lakes and rivers causing polluted water. Runoff can also cause flooding, which is a growing concern with more extreme weather and rain due to climate change.

  • In 2017, about 45% of the town had impermeable land cover. We are looking at ways to expand the amount of naturally covered area to increase the town's resiliency to flooding.

Greenspace

Greenspace is important for better air and water quality, flood protection, climate stability and biodiversity protection.

Accessing greenspaces and natural areas has been shown to improve mental and physical wellness, increase quality of life and foster stronger community cohesion.

  • Oakville has 2,519 hectares of publicly owned greenspace. Over the last five years, the town has added 18 hectares of greenspace and continues to identify land for protection and opportunities to expand greenspace.

Water quality

High phosphorus levels impact plants and animals in our water by causing algae to grow faster than ecosystems can handle, lowering oxygen levels and contaminating the water. Ways that phosphorus get into our water include fertilizers, manure, organic wastes, detergents and wastewater treatment plant discharge.

  • Average annual phosphorus levels for Sixteen Mile Creek, Fourteen Mile Creek and Bronte Creek all had annual phosphorus levels well below their respective ten-year averages.

Chloride is another naturally occurring nutrient that can be toxic to aquatic life if levels are too high. Elevated chloride levels in Oakville creeks are primarily a result of road salting during winter months.

  • Average annual chloride levels vary across Oakville’s creeks. Fourteen Mile Creek is consistently above, Sixteen Mile Creek fluctuates above and below and Bronte Creek has remained below. As of 2014 the trend for all three creeks has been trending upward.

Corporate greenhouse gas

The town is committed to reducing the use of non-renewable energy at town facilities and improving air quality in Oakville. By using less electricity and natural gas, we not only save money, we lower our impact on the environment. 

  • The town’s baseline year of measurement is 2012, with a goal to achieve a 15% reduction in energy consumption at town facilities by 2019.
  • As of 2016, the town has seen a 3.7% energy use intensity reduction since 2012.

Environmental outreach

Education and outreach programs support the awareness of environmental sustainability issues.

Monitoring the number of events that the town hosts and/or participates in each year helps understand our efforts in raising the profile of the environmental sustainability efforts. 

  • The trend is hosting fewer but larger events.
  • In addition to the events, the town provides online education material and outreach through social media and works to deliver programs with community partners such as Conservation Halton, Oakvillegreen and the Halton Environmental Network.

Renewable energy

Renewable energy sources such as solar, wind, and geothermal can help replace non-renewable fossil-based sources such as nuclear and natural gas. Most renewable energy sources produce little to no greenhouse gas emissions which helps lower environmental impacts. 

  • In 2016, Oakville Enterprises Corporation (the parent company of Oakville Hydro) generated 27,336 megawatt hours (MWh) of electricity from renewable energy sources. These sources included solar, gas capture from landfill and hydro.

Electricity

Electricity generation can produce a number of air pollutants or toxic materials depending on how the electricity is produced.

Reducing electricity use is good for the environment and lowers household electrical bills, saving you money. 

  • Electricity consumption levels have been relatively stable the past three years. Electricity consumption per person in 2016 was 2% below the five-year average and virtually unchanged when compared to 2015 levels. 

Gas

Natural gas is a fossil fuel that, when burned, contributes to climate change and other air pollutants.

Reducing natural gas use is good for the environment and lowers gas bills, saving you money. 

Programs targeted towards reducing home energy use and more energy efficient heating systems can contribute to decreases in household heating costs. On average, the natural gas consumption per person is 742 cubic metres annually.

Waste

The amount of waste diverted from landfills helps us understand how effective our efforts have been to recycle, reduce and reuse.

Diverting waste through recycling and composting programs extends the life of our landfills, reduces energy use, and limits the need for extracting, refining and processing new raw materials.

The amount of waste generated per person has decreased in the past decade with more waste being diverted through blue bin recycling, organics, yard waste, and white goods and metal recycling programs. Rates have been consistent over the last five years hovering around 58 per cent.

Water

Efficient use of water reduces our impact on water resources and reduces the energy required to treat and transport water to our homes. It is also good for cost avoidance, because it is cheaper to conserve water than it is to increase treatment capacity. 

  • Despite increasing population, total residential water use has remained steady since 2005. Gains in population have been offset by lower household water use. The average water use per person, per day, is 220 litres.