Integrated modelling of stormwater treatment systems uptake.

Clicks: 313
ID: 53094
2018
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Abstract
Nature-based solutions provide a variety of benefits in growing cities, ranging from stormwater treatment to amenity provision such as aesthetics. However, the decision-making process involved in the installation of such green infrastructure is not straightforward, as much uncertainty around the location, size, costs and benefits impedes systematic decision-making. We developed a model to simulate decision rules used by local municipalities to install nature-based stormwater treatment systems, namely constructed wetlands, ponds/basins and raingardens. The model was used to test twenty-four scenarios of policy-making, by combining four asset selection, two location selection and three budget constraint decision rules. Based on the case study of a local municipality in Metropolitan Melbourne, Australia, the modelled uptake of stormwater treatment systems was compared with attributes of real-world systems for the simulation period. Results show that the actual budgeted funding is not reliable to predict systems' uptake and that policy-makers are more likely to plan expenditures based on installation costs. The model was able to replicate the cumulative treatment capacity and the location of systems. As such, it offers a novel approach to investigate the impact of using different decision rules to provide environmental services considering biophysical and economic factors.
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castonguay2018integratedwater Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Castonguay, A C;Iftekhar, M S;Urich, C;Bach, P M;Deletic, A;
Journal Water research
Year 2018
DOI
S0043-1354(18)30409-3
URL
Keywords
cost-benefit analysis agent-based modelling exploratory modelling urban water management water infrastructure planning water sensitive urban design

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