Original: Annual flows have ranged from less than 1,000 megalitres (810 acre-feet) in 1944 to as much as 10,900,000 megalitres (8.8 million acre feet) in 1950.
Simplified: In 1944 the flow was less than 1,000 megalitres (810 acre-feet). Six years later (1950) there was a flow of 10,900,000 megalitres (8.8 million acre feet).