|Looking upstream at the Faka Union Canal, May 2011|
What looks like a reflection pool is actually water – saltwater that is – rising up and going over the Faka Union weir in the wrong direction, as in “upstream.” More commonly we are used to seeing freshwater flowing downstream over the weir towards the coast.
In fact, that’s part of the problem too. Over the past decades the canal network that feeds the weir has robbed the adjacent wetlands of their waters, sending it too fast south, down the canal, and over the weir where it gets lost to tide.
|High tide sends saltwater upstream (left) over the Faka Union Weir|
Efforts are underway (click here to find out more) to restore the freshwater wetlands upstream of the weir which, when complete, will pulse less freshwater to tide …
And hopefully help keep that saltwater back.