I have long argued for more small natural weirs to be placed in some waterways to hold back water in the creeks throughout the dryer months , especially the Cooriemungle and Scots creeks, this would allow enough water to sustain blackfish and other small fish until the rains came again.
This could be achieved with fallen logs or rocks and would cause minimal damage to surrounding riparian vegetation .
This is good example it was probably constructed when the original bridge was built to slow the water during construction.
I don’t think it looks bad in the environment, moss and algae grow over it and it blends in quite well.
One of the arguments against weirs is that they would constrict flow for other species , I say what other species.