Goofs

In the last scene at the waterhole, some shots show the waterhole partially drained whilst others show the water at its original level.

In the last scene at the lake, Donkegin (a.k.a. the monster) emerges from the lake with Cody inside its mouth. Cody escapes by jumping into the water fully clothed and swimming for shore. He emerges from the water completely soaked and tightly hugs his father and Wendy, his girlfriend.

Then, the three of them immediately watch Donkegin from the shore. Observe their clothing. Cody is still dripping wet while his father and Wendy are dry. Since Cody was soaking wet when they hugged him, their clothing should be wet as well.

The water pumps used to drain the waterhole would not work as the waterhole is the lowest point in the landscape and the water would merely drain back in.

The film was targeted at the American market. There are several instances of the characters using language more appropriate for US individuals rather than Australian ones e.g "barf", "blacks".

Don, the Park Ranger, wears a tie as part of his work clothes, which park rangers never do in Victoria (nor the rest of Australia). The badge on his shirt is also inaccurate.

When Cody dives in the water hole looking for the monster, the water would be to murky for him to see anything, besides, he would need have on a pair of goggles to see under water even if it were perfectly clear.

At around 38:45 will the band is playing. You can clearly see that no one, including the singer are in sync or even playing the right parts.

When Cody is lifted up by the excavator, his jumper is surprisingly clean (note the bright white central panel and collar) for someone who has been in dirty water for several hours.