Could Green Roofs be an Answer to New York City’s Combined Sewer Overflow Problem? Using Storm Water Utility Fees to Incentivize Green Roofs

Urban Planning Thesis

Francesca Camillo

Clara Irazabal, advisor

Impervious surfaces comprise nearly 70% of the city’s land mass and contribute to runoff, ultimately becoming Combined Sewer Overflow (CSO) that is discharged through hundreds of outfalls to local waterways. This thesis explored the viability of green infrastructure to manage storm water runoff in New York City by using storm water utility fees to incentivize green roofs. This research posited that implementing storm water utility fees that are based on percentage of impervious cover on a parcel could incentivize the presence of green infrastructure, and specifically green roofs.