The video shows the quality of water overflowing from Robina Waters into the canal adjacent to LHM. As a comparison, the photo shows the current water draining from LHM. Clearly the water quality in the lake looks far better than the canal.
A trial of a $6k one way valve could effectively isolate the lake from canal water and assist in the determination of the negative effects that these floodwaters have. As we wait for clarification from the consultants investigating feasibility and the rains continue, the big concern is further reduction in water quality from the canal system.