This Windermere Bay Foreshore Reserve project is a passive stormwater treatment wetland.
Location: Claremont, Tasmania
Client: Glenorchy City Council
Time frame: 2012 – 2016
Services provided by Syrinx
Bioengineering; Ecological Engineering, Graphics and Signage; Specialist Construction; Sustainable/Green Infrastructure; Sustainable Masterplanning; Water Sensitive Design
Project Phases Delivered
1. Strategy & Planning 100%
2. Research & Investigations 100%
3. Concept Design 100%
4. Detailed Design 100%
5. Construction 100%
6. Operation, Maintenance & Monitoring 100%
Project Phases Details
This Windermere Bay Foreshore Reserve project is a passive stormwater treatment wetland
The site is located on the Derwent Estuary within the municipality of Glenorchy City Council. It is a public reserve approximately 5.5 ha in size which sits within a sheltered part of Windermere Bay, on the western shore of the Derwent Estuary.
The reserve was identified by the Derwent Estuary Program (DEP) as a high profile site for the implementation of best practice Water Sensitive Urban Design (WSUD) measures to treat stormwater from the surrounding 10.51 ha commercial and residential catchment (72% imperviousness) before entering the Derwent. Syrinx was initially engaged to design the project. Following a successful tendering process, Syrinx was additionally engaged to construct the system.
Incorporating a vegetated ephemeral wetland (an alternating wet and dry system), a sedimentation basin, a leaky wall and a series of rock weirs and vegetated swales, the site now treats stormwater in accordance with the aspirational water quality targets recommended by the DEP. The selected treatment train employs a densely vegetated creek with wetland floodplain. Native species were selected for their ability to treat stormwater, tolerance of seasonal or intermittent flooding and their colour, texture, height and form.
- Effective treatment of stormwater from the surrounding 10.51 ha catchment in accordance with the DEP’s water quality targets.
- Management strategy for stormwater treatment options.
- Detailed long-term, whole-of-site concept plan to guide future projects. This concept plan was significant in ensuring that the WSUD system was fully integrated with the community park.
- Successful re-establishment of the reserve as an attractive, ecologically important and dynamic recreational node showcasing a healthy saltmarsh ecosystem, beautiful foreshore area and best practice Water Sensitive Design.
- Design and development of educational signage to communicate the system’s processes to the community.