Background on the Crediting Protocols for Nutrient Reduction and Associated with Installation of Homeowner BMPs

Developed by the Chesapeake Bay Program’s Urban Stormwater Workgroup, this technical memo (approved 2014) outlines protocols for assigning nutrient reduction credit for verified homeowner-installed BMPs within the Chesapeake Bay Watershed Model. It helps state and local practitioners track, report, and verify residential practices—such as rain gardens and rainwater harvesting—by providing streamlined methods for aggregating data and ensuring consistent crediting.