With considerable rainfall over the past 3 weeks, the lake has received a generous top up of fresh water from the catchment. Unfortunately, swollen waters of the canal coinciding with the highest king tide of the year has also forced considerable salt water back into the lake. The increase in salt over time has led to the significant loss of aquatic vegetation and the build-up of salt also reinforces the serious stratification.
A trial of a one way valve recommend by the care group, only costing approximately $5000 including installation, would stop salt water entering the lake. This was recommended a year and a half ago to council.
While Griffith are looking into this solution, valuable opportunities have been missed to test the effectiveness of the valve in overflow events. Had this trial been implemented sooner, further damage to the lake could have been prevented.