NYS Department of Environmental Conservation Using Green Infrastructure to Manage Combined Sewer Overflows and Flooding Emily Vail Hudson River Estuary Program NYS Department of Environmental ConservaGon Cornell University NYS Water Resources InsGtute New York State Water Resources Institute
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"Green Infrastructure to Manage Combined Sewer Overflows and Flooding" by Emily Vail, NYSDEC Hudson River Estuary Program
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NYS Department of Environmental Conservation
Using Green Infrastructure to Manage Combined Sewer Overflows and Flooding
Emily Vail Hudson River Estuary Program
NYS Department of Environmental ConservaGon Cornell University NYS Water Resources InsGtute
New York State Water Resources Institute
PresentaGon Outline
• Hudson River Estuary Program
• Combined sewer overflows (CSOs)
• Impact of stormwater • Green infrastructure • Municipal programs and economic benefits
NYS Department of Environmental Conservation
Hudson River Estuary Program
Core Mission
• Ensure clean water • Protect and restore fish, wildlife, and their habitats
• Provide water recreaGon and river access
• Adapt to climate change • Conserve world-‐famous scenery
Importance of Watershed Thinking
• It’s important to think about stormwater management from a watershed perspecGve, because stormwater travels to waterbodies (and can lead to problems if not managed well)
The land and water that drain to a common outlet
From NEMO
What is a Combined Sewer System?
Riverkeeper, 2011
What is a Separated Sewer System?
Riverkeeper, 2011
CSOs on the Hudson
Poughkeepsie
Yonkers
Catskill
Hudson
Newburgh
Kingston
Albany Pool -‐ Albany, Rensselaer, Troy, East Greenbush, Bethlehem, & Watervliet
• Wet weather leads to overflows • Degrades water quality • Impacts public health, water recreaGon
Overflowing Sewage
Sanitary sewer overflows in Poughkeepsie
• Most stream impairments in the region due to polluted runoff
Benefits of Green Infrastructure • Manage stormwater (quality and quanGty) • Recharge groundwater • Reduce CSOs, reduce wastewater treatment costs • Cool urban areas – energy savings • Provide wildlife habitat • Improve air quality • Improve human health • Increase land values • BeauGfy neighborhoods
ImplemenGng Green Infrastructure • Homeowners, watershed groups, neighborhoods, regional planners, businesses, and
• MunicipaliGes – Planning – Codes/ordinances to encourage, incenGvize, or require
– DemonstraGon sites SUNY Orange, Middletown
Green Infrastructure to MiGgate CSOs
• New York City • Philadelphia, PA • Syracuse, NY • Portland, OR • Seadle, WA • Milwaukee, WI • Kansas City, MO
* CiGes highlighted in NRDC’s Roo#ops to Rivers II
Green Infrastructure Saves Money • New York City (over 20 years)