South Australian Gulf
July 2019 Summary
Rainfall was very much below average (including lowest on record) across 62 per cent of the area, spread throughout the drainage division. Mean rainfall was 14 mm, 59 per cent lower than the long-term mean of 34 mm for July. Rainfall was the seventh lowest for July in the past 120 years.
Streamflow was very much below average (including lowest on record) for 70 per cent of the sites with sufficient data. At three sites streamflows were the lowest for July since 1980.
Median streamflow salinity (electrical conductivity) varied between sites from 541 to 6813 μS/cm. Streamflow was fresh for 33 per cent of the sites. Wakefield River near Rhynie and Broughton River at Mooroola had the highest salinity of all sites.
During July, the total accessible volume of the only storage system in this area increased by three per cent. By the end of the month, the volume of water stored was 48 per cent of the total accessible capacity, a decrease of one per cent from the same time last year.
|Rainfall decile group||Percentage of area|
|Highest on record since 1900||0%|
|Very much above average||0%|
|Very much below average||58%|
|Lowest on record since 1900||4%|
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