Walking along today and decided to hide a dam cache or three. This one will challenge your caching instincts, your assumptions and your ground game.
Spoiler pics will be deleted. Found logs that don't match a signature when i check on it likewise. It's meant to be a challenge. Let's keep it so for those who follow
If this was the Fallout game world I would strongly recommend training up your Perception skill before attempting it.
The area here has some history to it. The original canal cut at Poonamalie locks had a wooden weir across the river, right about where a concrete one stands today. It was breached by ice in 1869, and again in 1904, both times causing serious flooding downstream. In 1904 a new concrete weir was constructed, though this one was lower than the original wooden one, which led to water levels dropping dangerously low in the canal cut.
The concrete weir you can see from here, with the hydraulic water control gate, was constructed in 1974.
Along with the changes and rebuilding of the weir, the original banks of the canal cut were raised by 2 feet in 1911 to allow more water to be retained in the Lower Rideau Lake, effectively constructing a 2-foot earth dam atop the lower bank of the cut. This earth dam is what you're standing on, and is where the cache is hidden.
More recently, this section of the earth dam was reinforced and an overflow weir was constructed just a few feet to the west of here. The rocks you see were set to help stave off erosion of the canal banks.
And now that you know a little bit more than you did when you started, good luck in your search! When you do find the cache please return it exactly as it was.
Happy hunting!