Defining Our Water Resource System
A water resource system is a network of rivers, lakes, ponds, wetlands, and groundwater features that work together to support the flow and storage of water across the landscape. The water resource system provides the water needed for healthy plants, wildlife, and ecosystems, as well as drinking water for people.
What’s included in the Water Resource System?
CVC’s Water Resource System includes::
Watercourses
Channels of flowing water, including rivers, streams, and swales.
Waterbodies
Bodies of water, including natural and human-created lakes and ponds.
Wetlands
Areas of land covered by shallow water, seasonally or permanently. The four major types of wetlands are marshes, swamps, bogs and fens.
Seepage areas and springs
Field observations of groundwater emerging from the ground.
Highly Vulnerable Aquifers (HVAs)
Aquifers that can be easily impacted by contamination from human activities and natural processes.
Significant Groundwater Recharge Areas (SGRAs)
Recharge areas that help maintain the water level in an aquifer that supplies drinking water.
Candidate Ecologically Significant Groundwater Recharge Areas (ESGRAs)
Recharge areas that directly support sensitive aquatic ecosystems, such as coldwater streams and wetlands.
Watercourses with high simulated groundwater discharge
Streams that receive a significant amount of groundwater to help maintain the baseflow of the stream.
Potential groundwater discharge areas
Areas where groundwater is likely to emerge from the ground based on modelling from the Oak Ridges Moraine Groundwater Program.
Protecting Our Water Resources
The Water Resource System is:
- A resource for our partners to guide their strategies and plans.
- Understood through data collected in our long-term inventory and monitoring programs.
- Characterized in CVC’s Watershed Plan, which will identify a suite of management actions to guide our work with our partners.
- Managed through collaborative efforts between CVC, local partners, businesses and private landowners. To get involved check Ways to Green Your Property.
Upcoming Events

November 12 @ 5:30 pm – 8:30 pm
Mold-Masters Sportsplex Arena (Gordon Alcott Heritage Hall)
November 18 @ 6:00 pm – 8:00 pm
Acton Arena – Multipurpose RoomNatural Heritage System News



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