Monthly Water Update

small map representing the district South West Coast

South West Coast

February 2020 Summary

Rainfall was very much above average across 42 per cent of the area and above average for 52 per cent of the area. Total rainfall was 48 mm, 153 per cent higher than the long-term mean of 19 mm for February. Rainfall was the tenth highest for February in the past 121 years.

Despite the rain the streamflows were average or lower than average for 90 per cent of the sites. Hill River - Hill River Springs had the fourth highest streamflow for February since 1980. Blackwood River - Darradup and Murray River at Baden Powell water Spout had the lowest streamflow for February since 1980.

Median streamflow salinity (electrical conductivity) varied between sites from 206 to 7078 μS/cm. Streamflows were high quality for 10 per cent, moderately saline for 40 per cent and saline for 30 per cent of the sites. Blackwood River at Darradup had the highest salinity of all sites.

During February, storage volumes decreased in four systems. By the end of the month, the volume of water stored was 40 per cent of the total accessible capacity, which is five per cent lower than in February 2019.

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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 West Coast

Rainfall statistics

Rainfall decile group Percentage of area
Highest on record since 1900 Less than 1%
Very much above average 41%
Above average 52%
Average 6%
Below average 0%
Very much below average 0%
Lowest on record since 1900 0%

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