September 2017 Summary
Rainfall was average or below average for 78% of the area, spread across the drainage division. Mean rainfall was 1 mm, 75% lower than the 1900 to 2016 mean of 4 mm for September.
Streamflows were variable across the drainage division. At three sites streamflows were highest for September since 1980. Walsh River Flatrock had the third lowest streamflow for September since 1980.
Median streamflow salinities varied between 33 and 772 microSiemens/cm. Streamflows were high quality or fresh for all of the sites with sufficient data. Porcupine Creek at Mt Emu Plains had the highest salinity of all sites.
During September, the total storage volume decreased by 4%. By the end of the month, the volume of water stored was 80% of the total accessible capacity, a decrease of 7% from the previous year.
|Rainfall decile group||Percentage of area|
|Highest on record since 1900||0%|
|Very much above average||Less than 1%|
|Very much below average||3%|
|Lowest on record since 1900||0%|
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