June 2019 Summary
Rainfall was average or lower than average across 74 per cent of the area, spread throughout the drainage division. However, a quarter of the area had above average rainfall. Mean rainfall was 6 mm, 33 per cent lower than the long-term mean of 9 mm for June.
Streamflow was average or higher than average (including highest on record) for 86 per cent of the sites, spread throughout the drainage division. Mitchell River at O.K. Bridge had the highest streamflow for June since 1980. Gregory River Gregory had the third lowest streamflow for June since 1980.
Median streamflow salinity (electrical conductivity) varied between sites from 41 to 956 μS/cm. Streamflow was fresh or better quality for 83 per cent of the sites and brackish for 17 per cent of the sites. The monitoring site Dugald River at Railway Crossing had the highest salinity of all sites.
During June, accessible storage volume at Mount Isa (the only storage in the area) decreased by three per cent. By the end of the month, the volume of water stored was 90 per cent of the total accessible capacity, a decrease of one per cent from the same time last year.
|Rainfall decile group||Percentage of area|
|Highest on record since 1900||0%|
|Very much above average||Less than 1%|
|Very much below average||1%|
|Lowest on record since 1900||0%|
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