The key recommendation of the 2018 Water Use Plan for Cowichan Lake and Cowichan River is to construct a new weir with an increase of 70 cm of elevation above the existing weir. In July 2021, the final design of the new weir was completed. A condition of the key recommendation is that an assessment be done of the potential impacts to the Cowichan Lake shoreline due to storing water earlier and at a higher level than has been done historically. The Property View Tool helps to visualize the various lake elevation information at a property level. It is a Geographic Information System (GIS) online tool in which we can compare the information gathered to date on top of aerial photography.

Watch the video below to learn how to use the Property View Tool. Click on the image to play the video.

Click the link below to access the Property View Tool.

Property View Tool Link

For a refresher on the terms used in the Property View Tool, see the infographic below.

Or, watch the video below of a section from the July 8 Project Update in which we presented the terms. Click on the image to play the video.

A section of video of the July 8, 2021 Project Update in which Leroy presents the information that will be shown in the Property View Tool.

Have questions or comments? Let us know!

8 thoughts on “Property View Tool

    1. The property view tool is meant to represent the various boundaries as accurately as possible, however it does nor replace title documents, field pins and surveys. When you open the Tool, it says “This map is for information purposes only. It is not intended for design, analysis or construction.” To be sure to get the answer to your question you would need to obtain a proper survey of actual conditions.

  1. Just by observation, I don’t think the levels are correct for our place east of Saseenos point. The actual water levels fall well below where the existing weir crest is indicated by the light blue line. In March before the melt starts, there is considerably more beach showing.

    1. There is no definitive number as the lake drops in elevation every day as the water flows out into the river. The flow rates through the weir and into the river will be roughly the same as they are with the existing weir but now we will have an additional 70 centimeters of water to release. The 70 cm will be stored behind the weir starting in March or April (depending on climactic conditions) and then released throughout the control period from March/April to end of October. The daily release volume is authorized by the Province using a strict set of guidelines or ‘rule curve’. Throughout the summer the goal is to release water at 7 cubic meters per second. At this rate the lake lowers by approximately 1 centimeter per day.
      The alternative to a new weir will be to have much lower lake levels than we have had in the past.

  2. RE: Property Impact Tool
    How is flooding defined? Our property currently floods to some degree every year. What does the impact assessment of 5yrs mean?
    Shoreline Protection Structure: does this include a retaining wall?
    What do the models show for duration of flooding/inundation?

    1. Flooding is defined as when the water first touches the foundation of the primary residence. A shoreline protection structure is typically a retaining wall or wave break of some sort (wooden, concrete, rocks, vertical or sloped). Modelling shows that the duration of flooding is similar to historical durations. Inundation duration will be longer as a result of the new water storage due to raising of the weir and will vary from property to property. I’m not sure on the question ‘what does the impact assessment of 5yrs mean?’ – perhaps you could clarify.

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