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Reservoir Frogs – Edgars Creek Waterwatch Group

Edgars Creek, next to the Leamington Street Scout Hall, Reservoir

Waterwatch is a program that turns Darebin community members into citizen scientists who monitor and report on the health of their waterways.

The Waterwatch Program in Darebin is run by the Merri Creek Management Committee (MCMC) in partnership with Darebin City Council. It is a public program that welcomes community volunteers and provides them with training to be able to perform water quality monitoring at one of four creek monitoring sites. These sites cover the Darebin, Merri and Edgars creeks. Monthly water quality data is collected from each site by one of four different Waterwatch groups.

Waterwatch also runs regular community events, such as the Frogs on Wheels Bike Ride, Friends of Edwardes Lake Frog Walk and Talk, Robinson Reserve Planting Day and Merri’s Magical Morning.

The Reservoir Frogs Waterwatch Group currently has three community volunteer members who meet each month at Edgars Creek, next to the Leamington Street Scout Hall in Reservoir. The volunteers use water quality monitoring kits to test the below parameters, which give them an idea of how healthy the creek is.

In spring and autumn of each year, the Reservoir Frogs Waterwatch Group also assesses the types and numbers of macroinverterbrates present in the creek. Macroinvertebrates are animals that are big enough to be seen without a microscope and don’t have a spine, such as insects, crabs, snails and worms.

The group also photographs the creek once a year and assesses its habitat value (how well it provides homes for plants and animals).


  • Educated and engaged community
  • Better understanding of Edgars Creek and other local waterways
  • Long-term creek health data available to guide management of Edgars Creek
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Project details


Water temperature

The plants and animals in the creek have evolved to live within a certain range of temperatures. If the water becomes unusually warm or cool, many of them will die. If temperature change happens over a long period of time, the type of plants and animals living in the creek may change. If water becomes much warmer than usual, the risk of harmful nutrient overload is more likely, salinity is likely to get higher and oxygen levels lower (see below for more information).


How acidic or basic water is (pH) affects the health of aquatic plants and animals. Creek water should be fairly neutral (not overly acidic or basic). If pH levels become unusually high or low, some aquatic animals will not develop or breed normally. If the water becomes very acidic it can burn the skin of fishes.

Dissolved oxygen levels

The fish living in the creek need oxygen levels to remain within a certain range to survive. Too much oxygen in the water can affect their blood flow, whereas too little oxygen in the water can kill large numbers of fish in just a few hours.

Turbidity (murkiness or muddy-ness)

If creek water is too turbid, aquatic plants don’t receive the sunlight they need to grow.

Electrical conductivity

By testing how easily electricity can pass through water, we can tell how much salt is in the water (the water’s salinity). If there is too much salt in the water, fresh-water plants and animals find it hard to survive.

Phosphorus levels

Too much of the chemical phosphorus in water can lead to excessive growth of aquatic plants or algal blooms, which can choke waterways and starve them of oxygen. Some algal blooms can also be toxic to humans and other animals

Ammonia levels

Too much ammonia is toxic to fish and other aquatic wildlife.


How does Waterwatch work?

Waterwatch is a Melbourne-wide program funded by the Victorian State Government and local councils. The Darebin Waterwatch program is administered by the Merri Creek Management Committee. In Darebin, we have a Waterwatch Program Coordinator, who:

  • Works with Darebin City Council to plan and run community waterway education events
  • Works with Darebin City Council to promote conservation and protection of our waterways
  • Raises awareness and understanding of local waterway issues
  • Provides water quality monitoring training and equipment to Waterwatch volunteers
  • Helps to connect all levels of government, private business and the community to care for our waterways
  • Oversees Waterwatch monitoring on the Darebin, Merri and Edgars creeks

What else does Waterwatch do?

Waterwatch Community Events
A number of community events are put on by Waterwatch each year. The purpose of the events is to engage and educate the community and to recruit new volunteers. Recent events have included the Frogs on Wheels Bike Ride along Darebin Creek, the Frog Census nights at Edwardes Lake and Edgars Creek, Merri’s Magical Morning at the Merri Creek and a waterbug display at the Darebin Kite Festival at Edwardes Lake.

New Waterwatch community volunteers attend free training days to learn how to use water monitoring equipment. Once trained the volunteers can join an existing Waterwatch group or form a new group.

Data Collection
Waterwatch groups meet once a month to conduct water quality testing. Data is always collected from the same sites so that monitoring results can be compared to previous results and changes and trends can be identified.

Data Sharing
Data collected by Waterwatch groups, including Reservoir Frogs Edgars Creek Waterwatch Group, is uploaded to the Waterwatch online portal, where it is freely available for anyone to view, download and use.

Project Timeline
The Waterwatch program has been operating successfully in Darebin for over ten years.

How to Get Involved with Waterwatch

There are many different ways that you can volunteer your time, energy and enthusiasm with Waterwatch, and the program welcomes all new volunteers.

The Darebin Waterwatch program is administered by the Merri Creek Management Committee, get in touch with the Merri Creek Waterwatch Coordinator here to get involved.

If you would like to volunteer directly with the Reservoir Frogs Waterwatch Group, please email their primary contact Teresa Aquino – taquino1860@gmail.com.

You can also visit the Waterwatch website here to contact a Waterwatch coordinator outside of Darebin.

Some of the Darebin Waterwatch and ‘Friends of’ groups have their own websites too:


How does Waterwatch benefit the community?

Waterwatch is a community education and engagement program connecting local communities with river health and sustainable water management issues. The program aims to improve the community’s understanding, participation and ownership of local river health issues. It involves schools and the community in water testing, water bug identification and other water monitoring activities.

Darebin’s creeks provide the community with natural, green spaces in an otherwise urban area. Studies have shown that public open space in urban areas can increase levels of physical activity in the community and have mental health benefits, which can help to reduce healthcare costs (Parks Victoria, 2017). They also provide the opportunity for people to see a variety of wildlife not usually found in urban areas, some of which are threatened or endangered.

The Waterwatch program brings people together to take part in monitoring and community events. Through Waterwatch, the community is supported and encouraged to become actively involved in the conservation and protection of local waterways.

Waterwatch Aims:

  • Increase community awareness and understanding of the importance of river health issues.
  • Increase community participation and involvement in river health activities.
  • Foster greater community engagement and ownership of local waterways.
  • Involve communities in the monitoring of their local waterways.
  • Establish partnerships and develop collaborative projects to conserve and protect waterway health.
  • Use information gathered by local Waterwatch groups to identify solutions to improve the health of local waterways.
  • Encourage local communities to become actively involved in the implementation of projects to improve the health of local waterways.

How does Waterwatch benefit the environment?

Waterwatch volunteers provide monthly monitoring data for six creek sites across Darebin. This data allows us to better understand our creek environments and the conditions required for creek ecosystems (plants, animals and their habitats) to stay healthy. This knowledge helps guide us to manage our creeks and catchments sustainably.

Waterwatch monitoring also helps alert us to changes in our creeks that could have negative impacts on wildlife, such as water pollution. In the past, Waterwatch volunteers have found some areas of our creeks to be pollution ‘hot spots’ and have organised clean-ups to help improve these areas.



Darebin City Council acknowledges the Wurundjeri people as the traditional owners and custodians of this land and pays respect to their Elders past and present.

Project Funding Partners
Darebin Council provides partnership funding to the Waterwatch program in Darebin.

Melbourne Water also provides support for Waterwatch monitoring and training events.

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Copyright Darebin City Council 2017.
This project has been assisted by the Victorian Government through
Melbourne Water Corporation as part of the Living Rivers Stormwater Program.