Most harmful stormwater originates on private property, and public agencies are looking for ways to entice property owners to implement more effective infrastructure.

Shanyn Viars provides an explainer post on the challenges and benefits of stormwater infrastructure, before detailing an incentive program for private property owners to invest in green stormwater infrastructure to reduce infrastructure and risk management costs for municipalities.
Viars examines a case study from the Great Lakes region as a "how-to guide" for stormwater credits program:
With the support of the Great Lakes Protection Fund, Stormwater Currency and the City of Grand Rapids explored a market-based approach that creates incentivizes for private property owners to choose green infrastructure approaches for managing their stormwater. We sought solutions that harness the economic advantages of a market to fund green infrastructure on private property, reducing costs to the developers and the City’s. Our solution, Stormwater Credit Trading, allows private property owners who need to comply with stormwater regulations to “purchase” volume “credits” from other property owners that are not subjected to or have exceeded their requirements.
For more information, American Rivers and those collaborators completed a guide to stormwater credits, aptly titled "Establishing a Stormwater Volume Credit Trading Program."
FULL STORY: How-To Guide for Stormwater Credit Trading

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Urban Design for Planners 1: Software Tools
This six-course series explores essential urban design concepts using open source software and equips planners with the tools they need to participate fully in the urban design process.
Planning for Universal Design
Learn the tools for implementing Universal Design in planning regulations.
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Gallatin County Department of Planning & Community Development
Heyer Gruel & Associates PA
Mpact (founded as Rail~Volution)
City of Camden Redevelopment Agency
City of Astoria
City of Portland
City of Laramie