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Korin Tangtrakul talks about the Open Sewer Atlas NYC -- a GIS exploration and community planning tool to unlock the mysteries of the NYC sewer system. 0
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- 1. Josh Eichen and Korin Tangtrakul GeoNYC – 2/9/2015
- 2. LOVE STINKS! Project History Sewers 101 Scope of Work and Process Final Products! 1 2 3 4 Introduction Understanding the NYC Sewer System
- 3. HURRICANE SANDY – RED HOOK Project History: Red Hook • Street flooding and sewer backups impacted this area • Through stakeholder interviews, came to realize these issues were not isolated to Hurricane Sandy!
- 4. CONSISTENT ISSUES IN RED HOOK Project History: Red Hook
- 5. CONSISTENT ISSUES IN RED HOOK Project History: Red Hook Investigation of ways to validate these complaints led to 311 data
- 6. CONSISTENT ISSUES IN RED HOOK Project History: Red Hook Overlays with topography and major sewer infrastructure led to a more complete picture of the way the system functions
- 7. SEPARATE SEWER SYSTEM Sewers 101
- 8. COMBINED SEWER SYSTEM Sewers 101
- 9. Sewers 101 70% About of the city’s sewershed area is combined
- 10. Red Hook Sub-sewersheds Open Sewer Atlas NYC, 2014 openseweratlas.tumblr.com RED HOOK SUB-SEWERSHEDS Sewers 101 To better understand the sewer system, we look at issues at the “sewershed” level and the “sub- sewershed” level
- 12. WATER QUALITY IMPACT Sewers 101 CSOs brings excessive levels of nutrients causing algal blooms. When the nutrient load stops, the algae die and decompose, taking up dissolved oxygen in the water column in the process. Water bodies with low levels of dissolved oxygen cannot sustain aquatic life.
- 13. Open Sewer Atlas Project Scope LACK OF DATA!
- 14. WHAT IS OPEN SEWER ATLAS NYC? Open Sewer Atlas NYC is an open data source for sewer infrastructure and sub- sewersheds or drainage areas of interceptor sewer lines for the priority sewersheds of CSO-problem areas. Open Sewer Atlas Project Scope An exercise of GIS analysis to demystify New York City’s sewer system
- 15. WHAT IS OPEN SEWER ATLAS NYC? Open Sewer Atlas Project Scope Following the City’s Long Term Control Plans, OSANYC focuses on 5 waterbodies: Gowanus Newtown Creek Alley Creek Bronx River Jamaica Bay 1 2 3 4 5 1 2 4 3 5
- 16. Open Sewer Atlas Process PROCESS • Outreach to CBO’s • Meetings and site visits in areas of interest • Feedback on project • Research sewersheds through publicly available documents • Production of materials
- 17. FINDINGS: GOWANUS CANAL 0 0.5 10.25 Red Hook Sub-sewersheds Open Sewer Atlas NYC, 2014 Source: NYC DCP, DEP [ openseweratlas.tumblr.com Sewer Type Interceptor Sub-sewershed Bond Lorraine Columbia St Interceptor North Sewer 0 0.5 10.25 Miles Red Hook Sub-sewersheds with Flushing Tunnel Upgrade Open Sewer Atlas NYC, 2014 Source: NYC DCP, DEP [ openseweratlas.tumblr.com Sewer Type Interceptor Flushing Tunnel Sub-sewershed Bond Lorraine Columbia St Interceptor Columbia St Interceptor addition North Sewer Open Sewer Atlas Process
- 18. NEWTOWN CREEK • Treats 310 million gallons of wastewater a day! • Serves part of Manhattan, Brooklyn and Queens • Anaerobic digesters convert sewage to energy • Romantic Valentines Day tours Open Sewer Atlas Process The largest wastewater treatment plant
- 19. Open Sewer Atlas Process
- 20. FINDINGS: NEWTOWN CREEK The drainage area to the head of the creek is 4,000 acres! Is has the least circulation and discharges about 900 million gallons of CSO annually. Open Sewer Atlas Process
- 21. PROCESS: BRONX RIVER Bronx River Alliance and Rocking the Boat are leading education sessions and awareness campaigns about the Bronx River Open Sewer Atlas Process
- 22. FINDINGS: BRONX RIVER A citizen science study from EPA funding revealed: • High enterococci levels after rainfall • High enterococci levels at the West Chester county border during dry weather • Areas of low dissolved oxygen Open Sewer Atlas Process
- 29. QUESTIONS? OPEN SEWER ATLAS NYC