Detroit Water and Sewerage Department Model Extensions and Project Overview

TenBroek, Mark J.; Fujita, Gary; Brink, Philip; Sherman, Benjamin; White, David J.

doi:10.14796/jwmm.r204-11

Cited by 8 publications

(7 citation statements)

References 1 publication

(1 reference statement)

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“…These analyses provided the framework for the model used here. In the 1980s and 1990s, DWSD developed the Greater Detroit Regional Sewer System (GDRSS) Model of the entire DWSD service area (TenBroek, 1999). This model had very limited detail in the Oakwood district; however, the runoff parameters as developed for the GDRSS Model were incorporated into the Oakwood Model.…”

Section: Oakwood Model Formulationmentioning

confidence: 99%

Revising a Combined Sewer System Design for Improved Results

Witt¹,

Brink

Bhullar

et al. 2009

JWMM

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A new combined sewer system was designed for an existing sewer district located in the city of Detroit to address chronic basement flooding. The existing sewer system generally consists of sewers located in alleys behind homes, picking up both sanitary flows from the homes and storm flows from catch basins located in the streets. The proposed plan called for locating new sewers down most of the streets and bringing the existing house leads from behind the houses around front to connect to the sewers in the streets. The new system proposed consisted of a complete replacement of the existing system; it did not consider potential use of portions of the existing system to economize on cost.Upon further review by the Detroit Water and Sewerage Department (DWSD), this approach was not considered to be feasible due to the difficulty of being able to relocate the house leads. In many cases, there is not enough space to work between homes to reroute the house leads. In addition, such work would require construction on private property which would be quite disruptive to the neighborhood and community life, and furthermore, would not qualify for State funding.The city revised the proposed new sewer system design to incorporate the existing system to the extent possible while providing the desired level of service for the district. Specifically, where possible, the revised design was configured to intercept a sufficient number of catch basins in the streets

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Section: Oakwood Model Formulationmentioning

confidence: 99%

Revising a Combined Sewer System Design for Improved Results

Witt¹,

Brink

Bhullar

et al. 2009

JWMM

Self Cite

View full text Add to dashboard Cite

show abstract

“…Local collection system routing is also included in this model through the use of routing channels developed for this project. Results for the criteria selection assume that these empirical routing channels will adequately approximate the real system routing and duration of flows (TenBroek, 1999). The SWMM EXTRAN model routes the flows generated by RUNOFF for specific storm events through the collection system.…”

Section: Model Configurationmentioning

confidence: 99%

“…The EXTRAN model was used to provide estimates of overflows and treated flows resulting from specific events. The EXTRAN model includes the base wastewater or DWF, which can be adjusted to reflect seasonal changes (TenBroek, 1999). The simulations were performed for the month of April, which represents the highest DWF month.…”

Section: Model Configurationmentioning

confidence: 99%

An Equivalent Rainfall Technique to Identify Dry Weather Flow Data for City of Detroit Flow Balance Analysis

Santini

Brink

Sherman

et al. 2001

JWMM

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Flow data collected from over twenty metered sites in Detroit, Michigan are used to determine the source of flows fi:om districts tributary to the Detroit Water & Sewerage Department (DWSD) collection system through a flow balance analysis. Criteria developed for selecting data include precipitation, snowmelt, and basin dewatering. The Greater Detroit Regional Sewer System (GDRSS) model, a hydraulic and hydrologic model of Detroit's sewer collection system, was used to refine the rainfall-based criteria. Specifically, it was used to determine the time required for the system to return to dry weather flow (DWF) conditions after one or a series of rainfall event'l. As a result of model simulations, relationships were developed to represent time-to-dly as a function of the rainfall amount of single-or multiple-day rainfall events. These relationships are a key component of the overall data selection for the flow balance, and provide an objective approach to characterizing DWF in the DWSD collection system.

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“…Results for the criteria selection assumes these empirical routing channels will adequately approximate the actual system routing and duration of flows (TenBroek, 1999). The SWMM EXTRAN model routes the flows generated by RUNOFF for specific storm events through the collection system.…”

Section: Approachmentioning

confidence: 99%

“…The EXTRAN model was used to provide estimates of overflows and treated flows resulting from specific events. The EXTRAN model also includes the base wastewater or DWF, which can be varied by month to reflect seasonal changes (TenBroek, 1999). The simulations were performed for the month of April, which represents the highest DWF month.…”

Section: Approachmentioning

confidence: 99%

Development of Dry Weather Flow Data Selection Criteria for City of Detroit Flow Balance Analysis

Brink¹,

Santini²,

Sherman³

et al. 2000

proc water environ fed

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Combined sewer flow data is being collected at a number of sites throughout the Detroit Water & Sewerage Department (DWSD) collection system. The collected data is being used to prepare an analysis to determine flows generated in various areas within the collection system. To establish data selection criteria, a regional sewer model was used to determine the time that would be required for the system to return to dry weather flow (DWF) conditions after specific wet weather events.As a result of model simulations, relationships were developed to represent time as a function of the rainfall amount of single-or multiple-day rainfall events. These relationships are a key component of the overall data selection for the flow balance, and provide an objective approach to characterizing DWF in the DWSD collection system.

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Detroit Water and Sewerage Department Model Extensions and Project Overview

Cited by 8 publications

References 1 publication

Revising a Combined Sewer System Design for Improved Results

Revising a Combined Sewer System Design for Improved Results

An Equivalent Rainfall Technique to Identify Dry Weather Flow Data for City of Detroit Flow Balance Analysis

Development of Dry Weather Flow Data Selection Criteria for City of Detroit Flow Balance Analysis

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