Monthly Water Update

small map representing the district South East Coast (NSW)

South East Coast (NSW)

October 2018 Summary

Rainfall was higher than average across 71 per cent of the area, mainly in the north and centre of the drainage division. Mean rainfall was 134 mm, 86 per cent higher than the 1long-term mean of 72 mm for October.

Streamflow was average or higher than average for 71 per cent of the sites. Rivers in the far north had mostly very much above average streamflow. Clarence River at Lilydale (Newbold Crossing) had the second highest streamflow for October since 1980.

Median streamflow salinity (electrical conductivity) varied between the sites from 193 to 3295 μS/cm. Streamflow was fresh or of better quality for 33 per cent of the sites and brackish for another 33 per cent. Bayswater Creek at Liddell had the highest salinity.

During October, total volumes increased in three storage systems and remained stable in two. By the end of the month, the volume of water stored was 62 per cent of the total accessible capacity, a decrease of 21 per cent from the same time last year.

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map visualising rainfall details


map visualising streamflow details

Streamflow salinity

map visualising salinity details

Water storages

map visualising storage details


map visualising rainfall details for South East Coast (NSW)

Rainfall statistics

Rainfall decile group Percentage of area
Highest on record since 1900 1%
Very much above average 34%
Above average 36%
Average 27%
Below average 2%
Very much below average 0%
Lowest on record since 1900 0%

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