1. Roof-top Runoff
Jinya Yamakawa

2. background Nyc sewer system is 6600 miles
First modern sewage treatment plant in the us : late 19th century
each year snow and rain end up as billions of gallons

3. structure

4. What’s the issue? Health issues Beach closings
Swimming/fishing advisories
Habitat degradation

5. What’s the cause?
The High volume amount of water that is released into our water system too quickly with each rainfall
Impervious surfaces such as concrete or asphalt prevent water from naturally
The water picks up polluted materials from the surface

6. Green roofs A rooftop filled with vegetation and a growing medium.
Provides insulation, a wildlife habitat and absorbs water.

7. Water barrels Stores rain water
Provides water storage, recycling water, prevents sewage contamination.

8. other solutions
Revise state/local regulations to encourage green roof infrastructures.
Re-construct all piping's under the asphalt/concrete/buildings.
Develop infrastructures with green roofs pre-installed.

9. citations
Abolt, Bill, and Bob Newport. "Rooftops to Rivers: Aurora, Illinois' Use of Green Infrastructure in Riverfront Cleanup and Urban Redevelopment." Proceedings of the Water Environment Federation 2008, no. 6 (2008): doi: /
"Sewage Disposal in New York." Journal of Industrial & Engineering Chemistry 5, no. 12 (1913): doi: /ie50060a036.
Kloss, Christopher, and Crystal Calarusse. "Rooftops to Rivers." NRDC.
Geraghty, James J. "Ground-Water Problems In The New York City Area." Annals of the New York Academy of Sciences 80, no. 4 (2006): doi: /j tb49279.x.