Monthly Water Update

small map representing the district South East Coast (NSW)

South East Coast (NSW)

October 2020 Summary

Rainfall was higher than average across 69 per cent of the area, spread throughout much of the drainage division and average across 31 per cent of the area mainly in the north. Total rainfall was 103 mm, 43 per cent higher than the long-term mean of 72 mm for October.

Streamflows were higher than average for 36 per cent of the sites and average for 43 per cent of the sites, spread across the drainage division. Lower than average streamflows were recorded 22 per cent of the sites in the far north. The Goulburn River at Kerrabee had the highest streamflow for October since 1980. Richmond River at Wiangaree had the fourth lowest streamflow for October since 1980.

Median streamflow salinity (electrical conductivity) varied between sites from 220 to 4218 μS/cm. Streamflows were high quality for 12 per cent of the sites, fresh for 25 per cent and brackish for 38 per cent. Bayswater Creek at Liddell had the highest salinity of all sites.

During October, storage volumes increased in three systems, decreased in one and remained stable in two. By the end of the month, the volume of water stored was 80 per cent of the total accessible capacity, which is 32 percentage points higher than the previous 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 Less than 1%
Very much above average 22%
Above average 47%
Average 31%
Below average 0%
Very much below average 0%
Lowest on record since 1900 0%

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