Effectiveness of low impact development practices in two urbanized watersheds: Retrofitting with rain barrel/cistern and porous pavement

► The effectiveness of rain barrel/cistern and porous pavement are evaluated. ► Reduction in runoff, TP, and TN ranged from 2 to 12% due to LID implementation. ► Options for retrofitting LID should include 50% rain barrel/cistern or porous pavement. ► 25% rain barrel/cistern and 25% porous pavement could be another LID option.