Otago regional councillor Michael Laws. Photo / RNZ, Katie ToddOtago regional councillor Michael Laws. Photo / RNZ, Katie Todd

Lake Hawea is currently 340 metres above sea level. Photo / RNZ, Katie ToddLake Hawea is currently 340 metres above sea level. Photo / RNZ, Katie Todd

Lake Hawea township. Photo / RNZ, Katie ToddLake Hawea township. Photo / RNZ, Katie Todd

The lake at 340m - Contact Energy's Boyd Brindson said it was unlikely ever to drop as low as 330m. Photo / RNZ, Katie ToddThe lake at 340m – Contact Energy’s Boyd Brindson said it was unlikely ever to drop as low as 330m. Photo / RNZ, Katie Todd