The practice converted the former quarry run by cement supplier Cemex at Parkfield Road in Rugby by working with the Environment Agency on a strategy for restoring the limestone and clay pit.
The project to flood the former quarry created a lake with three floating islands at the heart of Rugby town centre. These man-made islands will encourage birds, amphibians and small mammals such as water voles to make the islands their home.
The restoration involved removal of 263,000 tonnes of material that was shifted to another quarry 10 miles away.
Meanwhile, a long term-management plan aims to ensure that the Quarry will retain its biodiversity and community value well into the future.
The steep faces of the quarry will become home to species including peregrine falcons and kestrels. Arup hopes the reserve will provide a viable habitat for the British white-clawed crayfish, a species under threat from the invasive American signal crayfish.
"The scheme’s success lies in striking a balance between landscape enhancement and habitat creation at the heart of the community," said Arup landscape architect Ian Lanchbury.
He added: "The site not only encourages access around the quarry perimeter, it also forms a key node within the wider green infrastructure network, adding to the local connected multifunctional green spaces and providing a better quality of life for those who live and work in the area."
Arup was part of the core design team for the Olympic Park and is looking at the environmental impacts of HS2, the proposed high speed rail link from London to the north.