The recent heavy storm on 29 December 2016 demonstrated the importance of Council’s drainage system.
Most of Bayside’s drainage system was built between 1940 and 1970, with some areas dating much earlier. Significant work has been done over the last five years to improve the capacity of the system in areas that were flooded in 2004 and 2011.
Although the rainfall intensity on 29 December 2016 was higher than most storms, the number of Bayside properties impacted by flooding was fortunately low. This demonstrates the positive impact of Council’s work to reduce flood risk.
Minor drains are maintained via an annual program of high pressure cleaning of pipes and drainage pits. The aim is to visit every pipeline in the municipality at least once every three years.
Over the last five years Council has invested $4 million in the drainage system and will spend more than $20 million on upgrades at 40 locations across Bayside over the next 10 years. The Bayside Drainage Development Contributions Plan also requires developers to contribute to the cost of upgrading the drainage network.
Recent drainage upgrades include Seaview shops, New Street (near South Road), Nepean Highway at Brighton East, Ardoyne Street in Black Rock and Kinane Street, Brighton at a cost of $2 million. In 2017-2018 more than $2 million is budgeted for further upgrades.
Council works closely with Melbourne Water on drainage matters. Melbourne Water is responsible for the major drains that Council’s drains run into, including areas like Elster Creek.
To further improve the management of flood risk, Council is also currently updating the boundaries of planning controls for land susceptible to flooding. This is based on new flood mapping by Melbourne Water and will help ensure building and development in these areas reduces the potential for flooding - minimising the risk of flood damage to property. Submissions on the boundary changes known as Amendment C153 close on 16 January 2017.
Council is actively introducing a range of new stormwater capture and treatment measures as part of upgrades to parks and other open spaces. This includes a new stormwater system for Brighton Golf Course and Dendy Park as well as Water Sensitive Urban Design elements such as rain gardens in locations including Hurlingham Park and the Hampton foreshore.
Improving stormwater treatment will also assist to improve the quality of water flowing into Port Philip Bay.