PaveDrain permeable paving solution helps watershed authority lead by example with responsible stormwater storage and soil recharge.

The Lake Simcoe Region Conservation Authority (LSRCA) has been dedicated to conserving, restoring and managing the Lake Simcoe watershed since 1951. The watershed spreads across 3,400 km2, touching 20 municipal borders and supporting over 400,000 residents.

Seven municipalities draw safe drinking water from the lake, which covers 20% of the area and is home to over 50 species of fish. The area includes York and Durham Regions, Simcoe County and the cities of Kawartha Lakes, Barrie and Orillia. Through partnerships with the community and all three levels of government, the LSRCA provides the leadership to protect what is natural and restore what has been degraded in the watershed.


Newmarket, Ontario


  • Biaxial (BX) Geogrids
  • Woven and High Strength Woven Geotextiles

Project Partners

  • Owner: Lake Simcoe Region Conservation Authority (LSRCA)
  • Consultant: CanDevCon Ltd., GeoProConsulting and Henry Kortekass & Associates
  • Contractor: Gallo Brothers Paving, Ltd.
    Completion Date: June 2016


The LSRCA needed to reconstruct their existing office parking lot and expand the capacity from 63 to 83 spaces. While doing so, the design also needed to improve emergency access and introduce Low Impact Development (LID) measures for stormwater management.

By showing leadership in their water management practices, through this publicly-visible solution, the LSRCA would be able to advance their mandate — watershed protection through research, policy and action — while still making a wise business management decision around construction costs and ongoing maintenance for the parking lot. Permeable surfaces are one of the Minimal Impact Design Standards being created for the LSRCA.


The PaveDrain permeable articulating concrete block system manages stormwater runoff while still providing a smooth paved surface that is strong enough to support heavy vehicle loads. It’s an ideal fit for the Minimal Impact Design Standards that will guide the remaining 12,140 hectares (30,000 acres) of undeveloped area in the watershed.

It provides infiltration through its locking-block design and provides storage through its arched block underside, which creates a sub-surface reservoir. This recharges the groundwater naturally, to mimic pre-construction hydrology.


Due to the size and shape of the project, the blocks were laid individually, rather than in mats. A high strength woven geotextile and Type 1 Biaxial geogrid were used underneath the PaveDrain blocks to provide a stable base that can withstand wet conditions.


Using PaveDrain supports the LSRCA’s mandate while also providing a rugged and aesthetically-pleasing paving solution that will be economical to maintain.

As part of the LSRCA’s larger strategy, this project was profiled in both the Daily Commercial News and on the Water Canada website.


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