In the Far South :
Beenleigh to Tamborine
[lower] Cedar Creek Road not the top in the national park, but instead nearer to Chardon Bridge Road
[Lower] Cedar creek park is about 1.5kays up Cdr Crk Rd from Beaudesert-Beenleigh Road [at B-B Road there's a big sign that tells you this is NOT Cedar creek Falls] : Rocky creek , flat , easy , deep in shade of trees , Open grass and undeveloped otherwise , take your Dog.
There is also an 'obvious' park downstream on Beadesert-Beenliehg road : Small, Traffic , gravel , picnic table.
Chardon Bridge Road Cedar Creek is a nice paddle but can get fast or muddy , steep banks , gravel bottom , toilets accross road , BIG park , undeveloped just mowed]
Also see Stanmore Ford at Wolffdene ; there's a Ford and big pool but you mostly can't climb out the banks , muddy and unpleasant rocks/concrete.
Some spots on Veivers Road nearby - unmarked ; steep climb down bank : Rocky Rough creek pretty.
South of Canungra : Sharp Park on the Beechmont road , grassy park , picnic tables toilet , open creek banks with some gravel.
Continue up Beechmont road about 4 kays South-East from Sharp Park to a BARELY MArked "Killarney Glen" ; once the road starts to climb just look at every single little side-track on the left. It is about a kilometre walk downhill to spectacular water-carved gorge, rock-pools paddling , and also deep water , , waterfall , Rainforest , some tables old rotting, drop-toilets , Steep walk back out.
Generally open weekends and school-holidays : it is Army land : the sign tells if it is open.
Numinbah Valley in from Gold Coast : there are Two parks - one obvious that is not pretty right beside the road , BUT the Upper park [keep heading towards NSW] is in deep forest : lots of picnic tables , toilet , pretty spectacular boulder creek.
Also in Numinbah is the Natural Bridge National Park - well worth seeing - but No Swimming.
Rathdowney : about 15kays up Running creek Road towards Lions Road NSW : big park , free camp , toilet , little creek, rocky.