A raingarden was installed in the park as part of a Natural Resource Management North initiative, supported by the Northern Midlands Council.

The development shows how to filter stormwater, and will act as an educational green infrastructure tool for the community.

The project is part of a wider initiative to fit similar small-scale raingardens at various sites across the North.

NRM North Stormwater and Catchment officer Jesse Webster said he was excited with the development.

"Raingardens are a simple way everyone can help the environment and improve the health of our local waterways, while increasing the aesthetics and biodiversity of your garden," Mr Webster said.

"I am excited to see these being implemented across the Northern region."

Raingardens are designed to act as a filter and improve water quality by draining it through different sands and soil layers.

The layers capture contaminants, which are then filtered out by the plants growing in the garden.

"By installing a raingarden in your backyard, you are creating a small bio-retention cell that cleans storm water, reduces peak flows and provides a habitat for birds and butterflies," Mr Webster said.

Northern Midlands mayor David Downie said the project would add to the appeal of Valentines Park.

Two more raingardens will be developed at Deloraine public pool, one at Kings Meadows High School, another at Bridport's pavilion and at Queechy High School.

For more information about raingardens, go to www.nrmnorth.org.au/teer