Monthly Water Update

small map representing the district Tasmania


September 2017 Summary

Rainfall was variable across the drainage division. Mean rainfall was 158 mm, 18% higher than the 1900 to 2016 mean of 134 mm for September.

Streamflows were average or lower than average for 89% of the sites, spread throughout the drainage division. Leven River at Bannons Bridge had the third highest streamflow for September since 1980. Scamander River Upstream Scamander Water Supply Intake had the lowest streamflow for September since 1980 due to low rainfall.

Streamflow for the Mersey River at Latrobe was fresh with a median salinity of 151 microSiemens/cm.

During September, the total storage volume decreased in the Hobart system, but it increased in the Lake Margaret system. By the end of the month, the volume of water stored was 100% of the total accessible capacity, an increase of 9% from 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 Tasmania

Rainfall statistics

Rainfall decile group Percentage of area
Highest on record since 1900 0%
Very much above average 8%
Above average 40%
Average 29%
Below average 15%
Very much below average 7%
Lowest on record since 1900 0%

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