|Title||Predicting Droughts in Wellington's Water Supply Catchments Using the Southern Oscillation Index : Scoping Study|
|Date published||1 March 1996|
|GWRC Publication No||WRC\RINV-T-96/18 part I|
|Abstract||This report is a scoping study commissioned by the Bulk Water
Department. It is to assess whether a relationship exists between the
Southern Oscillation Index (SOI) and river flows in the Wellington
metropolitan water supply catchments.
If a relationship exists, the extent to which this can be used to predict low
river flows with a reasonable led in time will be assessed.
Based on the scoping study findings, recommendations for future work
and more comprehensive analyses will be given.
If forecasts of low rainfall/river flow periods can be issued, proactive
planning of the metropolitan bulk water supply system can be achieved.
This will allow the Bulk Water Department to:
- Decide on appropriate abstraction regimes from the various water
- More effectively manage the Te Marua lakes and Hutt aquifer storage.
- Implement timely conservation measures.
- Plan maintenance to ensure all supplies are operational during a
- Include the forecast methodology into Phase I of the Bulk Water Drought
There are no related publication records.