here is what i found for oz in google for tidal bores(sorry if its too much )
There are three main locations in Australasia where tidal bores occur. Several of the rivers on the north to north-west coast of Australia have bores. The rivers drain into the Timor Sea where tides are macrotidal though several of these bores are observational only, and it is also possible that there are several more that have not been reported.The largest (and only documented) bore in Australia occurs on the Daly river north of the Malak Malak region in the Northern Territory. The river drains into the Timor Sea where the tidal range is more than six metres.
Bores have also been observed in the Joseph Bonaparte Gulf though there are no statistical records for these. The most effective are likely to be the Ord which flows into the Cambridge Gulf and the Victoria which flows into the Queens Channel.
Due to the large tidal range around this coast, bores may also occur on the rivers draining into Collier Bay and King Sound further west, especially the Fitzroy, but there are no records to confirm these.
A bore has also been observed on the Styx in Central Queensland which drains into the Coral Sea.
There is also a section of the east coast in Queensland where tides on the coast of the Coral Sea are macrotidal and bores have also been observed here.
Daly
Wave Height
Wave Speed
Upto 1.5m
4-5m/s
Effective Tide Height
6-7m at rivermouth
The Daly river has the largest bore documented in Australia. Located 100km south-east of Darwin in the Northern Territory the river drains itno the Timor Sea and at the mouth experiences macrotides in excess of six metres.
The bore forms 30km from the mouth of the river where the river width is only 15m. Records show that the depth of the river here is upto 5m.
As a result the head wave which reaches upto 1.5m will not break at all in the center of the river but probably maintains a trochoidal form throughout its course.
Daly Bore, Northern Territory, Australia
'...a bore exceeding a metre has been documented pushing 30km inland, but no additional information available...'
Ord Tidal Bore, Western Australia, Australia
'...this bore appears to have been recognised during a field trip around the Cambridge Gulf into which the river drains, no further accounts...
'Prince Regent Tidal Bore, Western State, Australia
'...located deep in the heart of a nature reserve north of the Kimberleys this river is not easily accessible for confirmation...'
Victoria Tidal Bore, Northern Territory, Australia
'...another Australian river for which no corrobarating information has yet been found...'
MMMMmmmm1-2 m wave going for 30 ks wooooooooooo
tom
