Monthly Water Update

small map representing the district South East Coast (NSW)

South East Coast (NSW)

January 2019 Summary

Rainfall was average for 40 per cent and lower than average across 50 per cent of the area. Mean rainfall was 58 mm, 50 per cent lower than the long-term mean of 115 mm for January.

Streamflow was lower than average (including lowest on record) for 77 per cent of the sites, spread throughout the drainage division. Due to dry catchment conditions in the north, Mann River at Mitchell had the lowest streamflow for January since 1980.

Median streamflow salinity (electrical conductivity) varied between sites from 329 to 2569 μS/cm. Streamflow was high quality or fresh for 43 per cent of the sites and brackish for 43 per cent of the sites. Wybong Creek at Wybong had the highest salinity of all sites with sufficient data.

During January, accessible volumes increased in one storage system, decreased in three and remained stable in one. By the end of the month, the volume of water stored was 59 per cent of the total accessible capacity, a decrease of 18 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 0%
Very much above average 2%
Above average 7%
Average 40%
Below average 16%
Very much below average 18%
Lowest on record since 1900 16%

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