Kelso Dam Construction

The Kelso Dam, located within Kelso Conservation Area in Milton, is receiving some needed repairs and infrastructure improvements. The dam was first constructed in 1962 and is Conservation Halton’s oldest flood control structure. It works in conjunction with Hilton Falls Dam located upstream, to provide flood control and flow augmentation for areas on Sixteen Mile Creek, including downtown Milton.Kelso-dam-construction

Background on Kelso Dam Repairs and Infrastructure Improvements

Conservation Halton staff observed a siltation plume located within the channel, immediately downstream of the Kelso Dam outlet during regular infrastructure maintenance in June 2015.

Engineering consultants conducted a visual assessment of the Kelso Dam and recommended some precautionary actions, which were carried out by Conservation Halton staff. The Kelso reservoir water level was lowered, and staff have been conducting site and photographic monitoring. There has been no visible observation of a siltation plume since June 2015.

Conservation Halton’s engineering consultants have completed investigations, studies and designs to address identified issues and recommended improvements to the Kelso Dam. Construction is expected to be completed by the end of 2019.

Our Approach

During construction, every effort will be made to mitigate any environmental impacts and reduce the disruption to our neighbours and visitors. However, some noticeable disruptions may occur:

  • The footbridge over Sixteen Mile Creek at Kelso Conservation Area will be closed for the duration of construction.
  • The roadway access over the dam from the Boat Launch and Rentals to the Camping area to the east side will be open but may experience periodic closures during construction activities.
  • Visitors using the Kelso Lake Reservoir for boating or swimming will continue to have lower water levels.
  • Occasional closures to the Boat Rentals parking lot and other service disruptions may occur. These will be communicated in advance.

Construction Phases

Phase 1 (2017-2018)

  • Utility Pole relocation
  • Groundwater investigation
  • Re-grading of emergency spillway
  • Re-leveling of concrete slabs on embankment
  • Removal of old groundwater monitoring equipment
  • Installation of new and automated groundwater monitoring equipment
  • Removal of grouted riprap on embankment to promote drainage and allow structural flexibility
  • Installation of new riprap to protect the upstream dam embankment from erosion
  • Site preparation
  • River-control- diversion channel and dewatering
  • Grouting cut-off at Dam crest
  • Stilling basin
  • Site restoration
  • Engineering support and Contract Administration

Phase 2 (2018-2019)

  • Site preparation
  • River-control- diversion channel and dewatering
  • Grouting cut-off at Dam crest
  • Stilling basin
  • Site restoration
  • Engineering support and Contract Administration

Project Supporters