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CSO Modeling in New Haven, Connecticut

Philip Cheung, Henry Goetz and Perrin Niemann (2001)
CH2M HILL; NHWPCA, E.Shore Water Poll Abatemt
DOI: https://doi.org/10.14796/JWMM.R207-21
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Abstract

The City of New Haven and the New Haven Water Pollution Control Authority operate a wastewater collection and treatment system that serves over 200,000 residents in the cities of New Haven, Woodbridge, Hamden, and East Haven. The system contains twenty-four permitted regulating structures to relieve high flows associated with wet weather events. These structures permit overflows from the combined sewers to local receiving waters. To address the water quality impacts from these overflows, a facilities plan completed in 1981 recommended construction of separate sanitary and storm sewers on a city-wide basis. In 1997, the City started to re-evaluate this plan because of changes in regulatory requirements as well as advances in available technologies for the control or treatment of wet weather flows.

MOUSE, an Arcview-GIS based dynamic model, was selected to analyze the performance of the combined sewer overflow (CSO) system. Three-month, 6-month, I -y, and 2-y design storms were simulated to evaluate the performance of the system. In addition, An average rainfall year was simulated to determine the performance of the system under typical rainfall conditions. The statistics for overflow frequencies, overflow volumes, and overflow durations in this average rainfall year were calculated for each overflow regulator. The statistics were then organized according to receiving waters so that the level of impact caused by the CSOs to each receiving water and the priorities for control could be arranged. Color coding of percent utilization of the pipes and available freeboard at each manhole

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PAPER INFO

Identification

CHI ref #: R207-21 1006
Volume: 9
DOI: https://doi.org/10.14796/JWMM.R207-21
Cite as: CHI JWMM 2001;R207-21

Publication History

Received: N/A
Accepted: N/A
Published: February 15, 2001

Status

# reviewers: 2
Version: Final published

Copyright

© 2001 CHI. Some rights reserved.

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Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 International License.

The Journal of Water Management Modeling is an open-access (OA) publication. Open access means that articles and papers are available without barriers to all who could benefit from them. Practically speaking, all published works will be available to a worldwide audience, free, immediately on publication. As such, JWMM can be considered a Diamond, Gratis OA journal.

All papers published in the JWMM are licensed under a Creative Commons Attribution 4.0 International License (CC BY).

JWMM content can be downloaded, printed, copied, distributed, and linked-to, when providing full attribution to both the author/s and JWMM.


AUTHORS

Philip Cheung

CH2M HILL, Waterloo, ON, Canada
ORCiD:

Henry Goetz

NHWPCA, E.Shore Water Poll Abatemt, New Haven, CT, USA
ORCiD:

Perrin Niemann

CH2M HILL, Boston, MA, USA
ORCiD:


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