I learnt today on our river cruise on lake kununurra that the crocodiles are only fresh water crocodiles, also fresh water crocodiles have thinner snouts than salt water crocodiles. 70 thousand litres is released per second from the dam to keep the river flowing but it would still take 7 years for lake Arygle to empty if we had no more rain. Lake Arygle is very big.
We went bushwalking after that in the national park. It looks out over the town and the mini bungle bungles.