Corin Dam is the first of three dams in a chain-of-ponds system on the Cotter River in the Australian Capital Territory supplying Canberra's water supply. Completed in 1967 Corin is an earth and rock fill embankment dam with a capacity of 70,900 million litres and is used to regulate the flow of water into the second dam in the system, Bendora, which in turn empties into the Cotter Dam for pumping to Canberra.
Corin is fed from a 197 square kilometre catchment area with the top water level sitting at 955.54m above sea level. The following pictures were taken on a walk down the far embankment of the dam to the river floor returning along the spillway to the top...
The spillway on the opposite end of the dam is a tall concrete channel descending to the river bed. Signage informs us that abseiling is prohibited and after looking down I can well understand why...
After descending via a well defined track the river floor is particularly picturesque as would be expected on a watercourse in Namadgi and the crystal clear water flows strongly from beneath the base of the dam wall. Depth indicators are positioned along the edge...
Back to being a river...
The rock embankment wall towering above us seen from the grassy river bank near the river's outflow...
At the base of the dam is the river proper emerging from a large tunnel...
An interesting little measuring 'weir' is located just down from the outflow. Being only 30 centimeters tall I can only think that it is for very fine measurement of some sort. The river moss growing nearby was lush...
A view from the little measuring station back to the outflow...
Son Wesley at the base of the dam wall he actually wanted to scale it. I declined...
This is the bottom of the spillway and as it isn't flowing the pool at it's base is stagnant.
A view of the dam wall from the water side...
Two emus in a paddock on the way home...
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Interesting pictures. Just a clarification: though most of the water from Bendora flows down to Cotter Reservoir, our drinking water is mostly drawn direct from Bendora by gravity through a pipeline to Stromlo water treatment plant. It has to be pumped up from Cotter, so preference is given to Bendora supply.
ReplyDeleteThanks for that Chrispycon. I didn't know that. Cheers.
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