It's been just over a year since South Australia's River Murray burst its banks in the biggest flood since 1956. For months flooding from high rainfall interstate put thousands of hectares of agricultural land under water and inundated 3500 houses. But it also pumped much needed water through the ailing southern end of the Murray Darling basin. South Australian correspondent Peta Doherty toured the Pike Floodplains in the Riverland with Indigenous rangers from River Murray and Mallee Country.