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Is there a Limit to Model Size and Complexity? Practical Experiences for CSO Modeling for Narragansett Bay.

David Crawford, Peter von Zweck and Thomas Grala (1995)
CH2M Hill; Narragansett Bay Commission
DOI: https://doi.org/10.14796/JWMM.R183-11
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Abstract

The Narragansett Bay Commission (NBC) manages a complex sewerage system that includes 65 combined sewer overflows (CSO). A model of the system was developed to determine in-system flows and CSO characteristics for use in conceptual design of CSO controls. The modelling approach successfully integrated six different SWMM models into a single system-wide model. The single system-wide model eliminated desktop approximations for boundary conditions and reflected the many inter-dependencies within the system. The model is stable and produces accurate numerical results. The estimated overflow volume is about 680,000 m3 (180 million gallons) during a 2-year design storm event. The model is currently being used to estimate the effectiveness and size of control alternatives. The alternatives include near surface storage facilities at strategic locations in the system and a deep tunnel scheme with drop shafts at major overflow locations.

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PAPER INFO

Identification

CHI ref #: R183-11 1133
Volume: 3
DOI: https://doi.org/10.14796/JWMM.R183-11
Cite as: CHI JWMM 1995;R183-11

Publication History

Received: N/A
Accepted: N/A
Published: February 15, 1995

Status

# reviewers: 2
Version: Final published

Copyright

© 1995 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

David Crawford

CH2M Hill, Portland, OR, USA
ORCiD:

Peter von Zweck

CH2M Hill, Boston, MA, USA
ORCiD:

Thomas Grala

Narragansett Bay Commission, Providence, RI, USA
ORCiD:


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