Monthly Water Update

small map representing the district South West Coast

South West Coast

July 2019 Summary

Rainfall was lower than average across 87 per cent of the area, spread throughout the drainage division. Mean rainfall was 40 mm, 42 per cent lower than the long-term mean of 69 mm for July. Rainfall was the tenth lowest for July in the past 120 years.

Streamflow was lower than average for 61 per cent of the sites, mainly in the central west and south.

Median streamflow salinity (electrical conductivity) varied between sites from 817 to 29328 μS/cm. Streamflow was brackish for 20 per cent of the sites. Mortlock River - Odriscolls Farm had the highest salinity of all sites.

During July, the total accessible volumes in all storage systems increased. By the end of the month, the volume of water stored was 45 per cent of the total accessible capacity, a decrease of three 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 West Coast

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 13%
Below average 62%
Very much below average 25%
Lowest on record since 1900 Less than 1%

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