Waterways Local Update 2014-15 Melbourne Water’s work to improve waterways and provide flood protection in the Shire of Macedon Ranges. 14 km trees planted along waterways 20 volunteers provided us with rainfall data $562,411 in community funding Melbourne Water is responsible for 8,400 km of rivers and creeks, 428 wetland treatment systems and more than 1,400 km of regional drainage systems in the Port Phillip and Westernport region. This work is funded by the Waterways and Drainage Charge, which is paid by property owners and collected by water retailers on our behalf. Within your local area, Melbourne Water cares for the following waterways: • Monument Creek • Riddells Creek • Jacksons Creek • Boyd Creek • Emu Creek • Toolern Creek • Deep Creek Waterways Local Update 2014 –15 1 Healthy waterways Maintenance Each year we create and maintain healthy waterways by removing litter, debris and excess sediment. We remove and spray weeds, cut grass and plant native trees and shrubs. What we have done Why 14 km revegetation We plant native trees and shrubs along waterways to provide habitat for birds and animals. Revegetating waterways also helps prevent them from erosion 40 km weed control Introduced and noxious weeds can choke waterways and take over from plants which provide healthy habitats for birds and animals 9 m3 sediment/silt removal Silt and sediment is removed for drainage and flood protection and to prevent pollution building up in our waterways. Excess silt and sediment in waterways and wetlands can also impact on habitat for native plants and animals 15 m3 litter/debris removal Litter can have devastating consequences for native animals and plants living in waterways. Debris such a leaves and grass cuttings can restrict the flow of water causing a flooding risk and changing the habitat for platypus and fish Undertook work on Deep Creek to enhance habitat for the endangered Yarra Pygmy Perch Fish need certain plant species to survive. We have replaced large woody weeds with species that encourage breeding and feeding Undertook an investigation on the values and threats to Cobaw State Forest Helps inform our future works to maintain and protect the waterways within the Forest Waterways Local Update 2014 –15 2 Environmental water We work with government agencies, councils, industries, landowners and the community to provide the allocated water needed in rivers to maintain healthy natural ecosystems. What we have done Why Worked with Council, Environmental Protection Agency, the Department of Land, Water and Planning, Southern Rural Water and Western Water to plan stormwater and wastewater treatments Stormwater pollution is the biggest threat to our rivers and creeks. By working with others, we can identify how to best manage the health of the Maribyrnong River and improve water quality Worked with the Victorian Environmental Water Holder, licenced diverters and Southern Rural Water to deliver environmental flows to the Maribrynong River Releasing water from upstream storages mimics flows that would naturally be there without the river being dammed. This improves water quality and habitat for native wildlife in the Maribyrnong River and Jacksons Creek As part of our Groundwater Dependent Ecosystems Program we investigated the role of groundwater on Jacksons Creek During drought conditions, groundwater provides an important water source to many ecosystems. This work helps us understand potential threats to Jacksons Creek and how we best manage it Worked with the Department of Environment, Land, Water and Planning to understand how animals and plants within Deep Creek survive during drought conditions Improving our knowledge of drought refuges for animals helps us understand the locations in your area that provide habitat for important species during dry conditions and how we can best manage them Monitoring and research We regularly undertake extensive monitoring, investigations and research to help us better understand how we can improve local waterways. What we have done Why Undertook monthly water quality monitoring at four sites within your area. These tests measure: Our water quality monitoring program is designed to assess broad-scale, long-term trends in water quality (typically over eight to 10 years). We use this data to help identify pollution sources and inform the community about local water quality • water temperature • dissolved oxygen • salinity (conductivity) • pH level • nutrients (nitrate, nitrite, ammonia, Kjeldahl nitrogen, soluble reactive phosphorus and total phosphorus) • indicators of faecal contamination (E. coli) • metals (arsenic, cadmium, chromium, copper, lead, nickel and zinc) Waterways Local Update 2014 –15 3 Planning for future development We plan for future development to ensure growing communities do not threaten local waterways. We also advise and assist new developments to ensure they do not increase flood risk. What we have done Why 80 referrals for land subdivisions reviewed To ensure proposed land subdivisions meet current standards for drainage and stormwater quality 16 development applications reviewed To make sure that growing communities don’t increase flood risk 12 flood information requests reviewed To provide flood information to property owners and people interested in purchasing or redeveloping property 7 applications for works near Melbourne Water assets and works such as bridges, shared pathways and jetties reviewed To ensure waterways, and the plants and animals that live there, are protected from the potential impacts of building works 12 stormwater connection applications reviewed To ensure waterways and the plants and animals that live there, are protected from the potential impacts of construction works Flood protection While floods are natural and we can’t stop them all from occurring, we aim to minimise the damage they cause to people, places and communities. We manage the regional drainage system and work with Council, the Victorian State Emergency Service, the Bureau of Meteorology, property owners and developers to make sure flood information is up to date, provide flood warning services, and prepare flood response plans. We also identify and construct new flood protection projects in areas with the greatest need. What we have done Why Consulted with councils and communities to develop a draft strategy to guide future flood management across the Port Phillip and Westernport region Although we cannot prevent floods from occurring, we can work together to manage the risks and minimise the damage and disruption they cause to people, places and communities We operate and maintain seven monitoring stations in your area to collect real-time information such as rainfall and water levels This data helps us understand rainfall patterns, plan responses to droughts and floods and make sure rivers and creeks have enough water to support local wildlife Flood mapping completed at Deep Creek To update our knowledge of flooding, better manage drains, assess flood risks in the catchment and assist with planning scheme overlays 20 volunteers in your area provide us with rainfall data by recording information from a rain gauge in their backyard. These figures, together with data from our automated gauges, provides us with valuable rainfall information. Find out more at melbournewater.com.au/communityrainreaders Waterways Local Update 2014 –15 4 Working with the community The involvement of community groups, volunteers, land managers and farmers supports our management of local waterways and regional drainage systems. If you’d like more information about funding opportunities please call 131 722 or email river.health@melbournewater.com.au Funding provided Grant $456,632 Stream Frontage Management Funding for private land owners and managers for works that protect or enhance riverbanks, such as weed control, fencing and planting native trees $4,903 Community Grants Funding for volunteer and community groups for works that protect or enhance riverbanks on public land and raise awareness, training and education to protect local waterways $12,809 Corridors of Green Funding for councils and public land managers for projects such as weed control, fencing and creating management plans $88,067 Rural Land Program Funding for landholders in specific catchments for projects that reduce the amount of sediment and nutrients entering waterways from agricultural land Throughout the year we also worked with the local community on several events and initiatives. Who we worked with What we did Newham Landcare Provided training and support for water quality monitoring including field visits, equipment maintenance and quality control exercises Greening of Riddell Waterwatch is a citizen science program that encourages communities to monitor platypus, frogs and waterbugs as well as the water quality of their local river or creeks. We empower our volunteers to collect data, protect the waterways environment and share their knowledge. Visit melbournewater.com.au/waterwatch or call 131 722 to find out more. ISSN: 1837-1663 (Print) ISSN: 1838-2428 (Online) Copyright © Melbourne Water Corporation July 2015 Waterways Local Update 2014 –15 5