- Riverton, South Australia. Riverton a town of distinctive character and interest to travellers, is situated in the heart of the Gilbert Valley on the banks of the River Gilbert, only 90 km north of Adelaide on Highway 32 (Barrier Highway), heading towards the famous wine-growing district of the Clare Valley and an historic copper mining town at Burra. Riverton is an ideal base for visiting Burra ...www.woodart.com.au/a_river01.htm