Stormwater solutions that make city streets into better places are built on carefully selected performance measures as much as on concrete and soil. Cities must select performance metrics that support their policy and program goals, allowing designers to keep sight of these goals throughout project development. Additionally, cities implementing green stormwater practices are often required to report on infrastructure performance and the return on investment as part of compliance reporting.

Carefully planning for strategies to measure the function and efficacy of GSI systems creates opportunities to communicate the benefits and value of sustainable stormwater infrastructure to the community.