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Green Stormwater Infrastructure Economics

Stormwater infrastructure is of growing interest in urban areas as communities face significant costs to modernize stormwater management to better deal with flooding and water pollution. Millions of dollars are being spent on improving stormwater management to achieve pollutant reductions required by the Clean Water Act. To better understand the economics of stormwater infrastructure in the Boise urban area, we worked with Idaho Rivers United to conduct a cost-effectiveness analysis of four types of green stormwater infrastructure (GSI) and two conventional infrastructure analogues. As GSI provides additional benefits beyond stormwater capture, the social benefits of GSI are also examined.