Bow River mitigation options
Proposed solution to manage the Bow River in conjunction with the TransAlta / Ghost Lake reservoir agreement.
Connecting the three rivers, Elbow, Sheep and Highwood and establishing the central joint reservoir (TRJR), would allow for controlling the water level in these three rivers (raising or lowering).
By lowering the flow rate in the Elbow River, this would facilitate the management of the water flow in the Bow River.
The option No. “1” for the Bow River requires managing the River in conjunction with the TransAlta / Ghost Lake reservoir agreement.
Since the flow rate in Elbow River can be controlled and lowered from the central reservoir -TRJR, a proposed tunnel (outside Calgary City) will divert the water during the flood season from the Bow River into the (lowered) Elbow River . By doing so, flow rate in the Bow River is controlled.
The flow rate analysis that was done on this option showed a significant reduction in the flow rate of the Bow River approaching the Fort Calgary confluence. City of Calgary engineers are looking at this study and the analysis .
to Connect the Bow River to the Mega Natural Reservoir.
This option requires studying the possibility of piping water from the Bow River to the discovered natural MEGA reservoir with an average width of 1 km. and an average height of 800m. The length of the available area for the reservoir is about 15km.
This natural reservoir is provided by nature (as shown in the previous maps/above) and located within the existing area between Elbow Lake and the starting point of Highwood River.
One of the advantages of this proposed solution is that the construction would progress through phases allowing for the evaluation of the benefits and budgeting for the cost.