KARAKA
Stormwater mitigation device: Wetland
The Area I have chosen is ~1 hectare large, and consists of residential developments, a public park containing, a series of pathways and boardwalks, a playground, and a wetland, which serves as a large stormwater device for the area. The dimensions of the wetland are:180m wide and 2m deep. As the initial aim of this project was to increase the biodiversity of the site and improve it’s ecology, a large variety of wetland plants are used to ensure that an ideal ecosystem is created to allow for as many living organisms to live in it as possible. There are a few water catchments which go across and along the area of land selected. The land also falls near a steep slope which has been revegetated to protect the land from erosion. Wetlands protect water quality by trapping sediments and retaining excess nutrients and other pollutants such as heavy metals. These functions are especially important when a wetland is connected to groundwater or surface water sources (such as rivers and lakes) that are in turn used by humans for drinking, swimming, fishing, or other activities. These same functions are also critical for the fish and other wildlife that inhabit these waters. Sediments, nutrients, and toxic chemicals enter the wetland primarily by way of runoff. In this area, runoff washes over residential, commercial, industrial buildings and streets where it picks up pollutants and carries them to receiving waters. Perspective showing wetland.
Concept plan. Riperian/Wetland vegetation
Residential development
Revegetation of slopes
Wetland
Playground
Public Park
Cross section of wetland.
The following wetland plants are included: Typha latifolia Glasswort Spartina patens Melica ciliata Melica nutans Miscanthus sacchariflorus Miscanthus giganteus Spodiopogon sibiricus Carex aurea pennisetum alopecuroides imperata cylindrica red baron Molinia caerulea Briza media Festuca ovina Wetland construction diagram.
Zara Jawadi 1382049