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Model Calibration of a Large Urban Sewer System using Radar Precipitation Information

Darko Joksimovic, Christine Hill, Greg Reilly, Adrien Comeau, Eric Tousignant and Daniel Jobin (2003)
XCG Consultants Ltd.; City of Ottawa; Stantec Consulting; Kije Sipi Ltd.
DOI: https://doi.org/10.14796/JWMM.R215-11
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Abstract

This chapter describes the development and calibration of an XP SWMM Project Model of the City of Ottawa’s major interceptor and collector sewers. The Project Model was developed to confirm the size and assist in the development of an operating strategy for the Somerset Wastewater Storage Facility (SWSF). Significant temporal and spatial variability of rainfall over the large West Nepean sewershed area precluded the calibration of the entire Project Model utilizing precipitation information from the area rain gauges alone. Rainfall data was developed for a virtual rain gauge network, which provided 5-minute rainfall volume estimates for each 1 km2 of the drainage area, utilizing data from the existing rain gauges and the weather radar information. Final Project Model calibration was performed using the flow data collected at six flow monitoring stations in the West Nepean portion of the collection system and the virtual rain gauge data averaged over the Project Model sub-catchment areas.

In general, measured and modelled peak flows and event volumes matched well, with 17 out of 24 events having peak flows within the 15% envelope. Measured and modelled event volumes were within a 15% envelope for all 24 model calibrations. Rainfall estimates for the large West Nepean sewershed area based on radar imaging enabled the calibration of the Project Model, which would not have been possible using data obtained from the area rainfall gauges alone.

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PAPER INFO

Identification

CHI ref #: R215-11 953
Volume: 11
DOI: https://doi.org/10.14796/JWMM.R215-11
Cite as: CHI JWMM 2003;R215-11

Publication History

Received: N/A
Accepted: N/A
Published: February 15, 2003

Status

# reviewers: 2
Version: Final published

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© 2003 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

Darko Joksimovic

XCG Consultants Ltd., Oakville, ON, Canada
ORCiD:

Christine Hill

XCG Consultants Ltd., Oakville, ON, Canada
ORCiD:

Greg Reilly

City of Ottawa, Nepean, ON, Canada
ORCiD:

Adrien Comeau

Stantec Consulting, Ottawa, ON, Canada
ORCiD:

Eric Tousignant

Stantec Consulting, Ottawa, ON, Canada
ORCiD:

Daniel Jobin

Kije Sipi Ltd., Gatineau, QC, Canada
ORCiD:


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