Streamflows - September 2006
Following on from the low rainfalls experienced since June (and therefore dry catchments), rainfalls in September were not enough to produce good runoff. As a consequence, almost all Victorian streams showed further deterioration in flows relative to the monthly average.
At the end of September, almost three quarters of the State had streamflows that were less than 10% of the long-term average flow for the month. (see map, graphs and table)
Only East Gippsland had flows above 20% of the long-term average, with the Snowy, Tarra and Upper Yarra Rivers recording flows over 10% of the long-term average. The highest flow relative to the long-term September average was 29%, on the Snowy River downstream of Basin Ck.
Flows recorded at many of the gauged stations are the minimum ever recorded during September. Out of the 28 stations analysed in this report, 20 have current flows lower than average daily flows recorded in September 1982. Because the catchments are still very dry it will take significant rainfall to wet them up before any good runoff is generated.
In this section
The following are graphs for the 28 streamflow guaging stations, showing long-term average daily streamflow, recorded minimum streamflow, streamflow in the 1982/83 drought and current daily streamflow.
- Glenelg/Wimmera (Glenelg Hopkins catchment, Wimmera catchment)
- Northern Victoria (North Central catchment, Goulburn Broken catchment, North East catchment
- South Central Victoria (Port Phillip catchment, Corangamite catchment)
- Gippsland (West Gippsland catchment, East Gippsland catchment)