Creating a Tight Sewer System and Proving It – A Case Study Scio Township, Michigan

Cox, Carrie Ricker; Martin, Scott D.; Czachorski, Robert

doi:10.2175/193864708788812929

proc water environ fed

2008

DOI: 10.2175/193864708788812929

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Creating a Tight Sewer System and Proving It – A Case Study Scio Township, Michigan

Carrie Ricker Cox¹,

Scott D. Martin²,

Robert Czachorski³

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2024

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Reparametrizing the Antecedent Moisture Model

Edgren,

Czachorski,

Gonwa

2024

JWMM

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Developing simple and accurate hydrologic models for wet-weather sanitary sewer flow has long been enigmatic for the engineering community. Hydrologic models suitable for surface water hydrology often perform poorly when simulating sanitary sewer hydrology when they do not account for antecedent moisture conditions and seasonality. The result is underpredicting peak flow and volume in wet conditions and overpredicting the same in dry conditions. The Antecedent Moisture Model is an empirically-calibrated method which models a rainfall capture fraction that varies by antecedent moisture and season, and transforms the captured rainfall into a flow hydrograph. The Antecedent Moisture Model has been particularly successful in modeling sanitary sewer infiltration, for which other methods perform poorly. This paper suggests a reparameterization of the original model which provides virtually identical results while improving interpretability and ease of use. The reparametrized model is designed to be time step independent and more physically relatable, intuitive, and scaleable than the original parameterization while remaining functionally equivalent to the original parameterization. The paper also presents two computational examples which demonstrate the application of the Antecedent Moisture Model formulas and math.

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Reparametrizing the Antecedent Moisture Model

Edgren,

Czachorski,

Gonwa

2024

JWMM

View full text Add to dashboard Cite

show abstract

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Creating a Tight Sewer System and Proving It – A Case Study Scio Township, Michigan

Cited by 1 publication

References 0 publications

Reparametrizing the Antecedent Moisture Model

Reparametrizing the Antecedent Moisture Model

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