Monthly Water Update

small map representing the district South East Coast (NSW)

South East Coast (NSW)

July 2019 Summary

Rainfall was lower than average across 66 per cent of the area, spread throughout the drainage division. Mean rainfall was 21 mm, 65 per cent lower than the long-term mean of 60 mm for July.

Streamflow was very much below average (including lowest on record) for 57 per cent of the sites, spread throughout the drainage division. Due to the continuation of the dry catchment conditions in previous months, at 11 sites streamflows were the lowest for July since 1980, including sites in the Clarence, Macleay, Manning, Karuah and Hunter River catchments.

Median streamflow salinity (electrical conductivity) varied between sites from 292 to 3344 μS/cm. Streamflow was of better quality for 25 per cent of the sites and brackish for 38 per cent of the sites. Bayswater Creek at Liddell had the highest salinity of all sites.

During July, the total accessible volume decreased in three storage systems and remained stable in three. By the end of the month, the volume of water stored was 52 per cent of the total accessible capacity, a decrease of 16 per cent from the same time last year.

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Rainfall

map visualising rainfall details

Streamflow

map visualising streamflow details

Streamflow salinity

map visualising salinity details

Water storages

map visualising storage details

Rainfall

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 0%
Above average Less than 1%
Average 34%
Below average 42%
Very much below average 24%
Lowest on record since 1900 0%

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