Follow-up on Operating Practices Bureau of Water Supply
Author: New York (State). Deputy Comptroller for the City of New York
Publisher:
Published: 1989
Total Pages: 16
ISBN-13:
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Author: New York (State). Deputy Comptroller for the City of New York
Publisher:
Published: 1989
Total Pages: 16
ISBN-13:
DOWNLOAD EBOOKAuthor: New York (State). Division of Audits and Accounts
Publisher:
Published: 1982
Total Pages: 74
ISBN-13:
DOWNLOAD EBOOKAuthor: New York (State). Office of the State Deputy Comptroller for the City of New York
Publisher:
Published: 1989
Total Pages: 32
ISBN-13:
DOWNLOAD EBOOKAuthor: National Academies of Sciences, Engineering, and Medicine
Publisher: National Academies Press
Published: 2019-01-11
Total Pages: 215
ISBN-13: 0309482798
DOWNLOAD EBOOKNew York City's water supply system is one of the oldest, largest, and most complex in the nation. It delivers more than 1.1 billion gallons of water each day from three upstate watersheds (Croton, Catskill, and Delaware) to meet the needs of more than eight million people in the City, one million people in Westchester, Putnam, Orange, and Ulster counties, and millions of commuters and tourists who visit the City throughout the year. The Catskill and Delaware portions, which make up about 90 percent of the supply, receive no filtration or treatment other than disinfection, except for rare instances of high turbidity when a coagulant is added to increase deposition of suspended solids. The remaining 10 percent of the supply comes from the Croton watershed and receives treatment via filtration. The drinking water supply is managed by the Bureau of Water Supply within the New York City Department of Environmental Protection (NYC DEP). To continue to avoid filtration of the Catskill/Delaware portion of the water supply, in 2007, NYC DEP reexamined its control of turbidity in the Catskill portion of the water supply, including both structural improvements to the system and operational changes. The Operations Support Tool (OST) was developed as part of these efforts. OST couples models of reservoir operations and water quality; it uses real-time data on streamflow, snow pack, water quality, reservoir levels, diversions, and releases; and it incorporates streamflow forecastsâ€"all in order to predict future reservoir levels, water delivery to customers, and water quality within the system. These predictions inform the system operators, who then make decisions based on the most current data and forecasts. This report reviews the use of OST in current and future reservoir operations. It considers potential ways in which the City can more effectively use OST, makes recommendations for additional performance measures, and reviews the potential effects of climate change on the City's water supply to help identify and enhance understanding of areas of potential future concern with regard to the use of OST.
Author: New York (N.Y.). Investigation, Department of
Publisher:
Published: 1991
Total Pages: 27
ISBN-13:
DOWNLOAD EBOOKAuthor: United States. Environmental Protection Agency. Office of Water
Publisher:
Published: 1983
Total Pages: 68
ISBN-13:
DOWNLOAD EBOOKAuthor: National Academies of Sciences, Engineering, and Medicine
Publisher: National Academies Press
Published: 2020-12-04
Total Pages: 423
ISBN-13: 0309679702
DOWNLOAD EBOOKNew York City's municipal water supply system provides about 1 billion gallons of drinking water a day to over 8.5 million people in New York City and about 1 million people living in nearby Westchester, Putnam, Ulster, and Orange counties. The combined water supply system includes 19 reservoirs and three controlled lakes with a total storage capacity of approximately 580 billion gallons. The city's Watershed Protection Program is intended to maintain and enhance the high quality of these surface water sources. Review of the New York City Watershed Protection Program assesses the efficacy and future of New York City's watershed management activities. The report identifies program areas that may require future change or action, including continued efforts to address turbidity and responding to changes in reservoir water quality as a result of climate change.
Author: United States. Environmental Protection Agency. Office of Water Supply
Publisher:
Published: 1977
Total Pages: 128
ISBN-13:
DOWNLOAD EBOOKAuthor: Illinois. Division of Public Water Supplies
Publisher:
Published: 1979
Total Pages: 16
ISBN-13:
DOWNLOAD EBOOKAuthor: United States. Environmental Protection Agency. Water Planning Division
Publisher:
Published: 1980
Total Pages: 128
ISBN-13:
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