Physically based modeling of stormwater pipe leakage in an urban catchment

Research output: Contribution to journalArticleResearchpeer review

Authors

  • Aaron Peche
  • Thomas Graf
  • Lothar Fuchs
  • Insa Neuweiler

External Research Organisations

  • Institute for Technical and Scientific Hydrology (itwh) GmbH
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Details

Original languageEnglish
Pages (from-to)778-793
Number of pages16
JournalJournal of hydrology
Volume573
Early online date2 Apr 2019
Publication statusPublished - Jun 2019

Abstract

In urban stormwater pipe networks, pipe leakage may lead to reduction of groundwater recharge, to significant reduction of groundwater levels, and to subsurface contamination. In the present study, stormwater pipe leakage is simulated in a case study representing an urban catchment using the coupled groundwater-pipe network flow model OGS-HE. This model includes pipe flow, variably saturated subsurface flow and exchange fluxes to and from leaky pipes. The study area is a typical northern German urban catchment with a stormwater pipe network which is located partly below and above groundwater. The successful calibration of a groundwater model is shown. Based on the calibrated groundwater model, stormwater pipe leakage for pipe networks of different ages and different pipe defect sizes is investigated for dry-weather flow conditions and rainfall conditions. It is shown that standard defects with a size of 10-4 m2 per m pipe can result in a groundwater infiltration into the leaky pipe network, which is in the order of annual groundwater recharge. The same standard defect size leads to a reduction of local groundwater levels by several meters. Rain events of increasing return period reduce groundwater infiltration into leaky pipes and increase stormwater exfiltration from leaky pipes, while the temporal distribution of a rain event has no effect on stormwater leakage.

Keywords

    Catchment scale, HYSTEM-EXTRAN, OpenGeoSys, Stormwater pipe leakage, Urban groundwater

ASJC Scopus subject areas

Cite this

Physically based modeling of stormwater pipe leakage in an urban catchment. / Peche, Aaron; Graf, Thomas; Fuchs, Lothar et al.
In: Journal of hydrology, Vol. 573, 06.2019, p. 778-793.

Research output: Contribution to journalArticleResearchpeer review

Peche A, Graf T, Fuchs L, Neuweiler I. Physically based modeling of stormwater pipe leakage in an urban catchment. Journal of hydrology. 2019 Jun;573:778-793. Epub 2019 Apr 2. doi: 10.1016/j.jhydrol.2019.03.016
Peche, Aaron ; Graf, Thomas ; Fuchs, Lothar et al. / Physically based modeling of stormwater pipe leakage in an urban catchment. In: Journal of hydrology. 2019 ; Vol. 573. pp. 778-793.
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title = "Physically based modeling of stormwater pipe leakage in an urban catchment",
abstract = "In urban stormwater pipe networks, pipe leakage may lead to reduction of groundwater recharge, to significant reduction of groundwater levels, and to subsurface contamination. In the present study, stormwater pipe leakage is simulated in a case study representing an urban catchment using the coupled groundwater-pipe network flow model OGS-HE. This model includes pipe flow, variably saturated subsurface flow and exchange fluxes to and from leaky pipes. The study area is a typical northern German urban catchment with a stormwater pipe network which is located partly below and above groundwater. The successful calibration of a groundwater model is shown. Based on the calibrated groundwater model, stormwater pipe leakage for pipe networks of different ages and different pipe defect sizes is investigated for dry-weather flow conditions and rainfall conditions. It is shown that standard defects with a size of 10-4 m2 per m pipe can result in a groundwater infiltration into the leaky pipe network, which is in the order of annual groundwater recharge. The same standard defect size leads to a reduction of local groundwater levels by several meters. Rain events of increasing return period reduce groundwater infiltration into leaky pipes and increase stormwater exfiltration from leaky pipes, while the temporal distribution of a rain event has no effect on stormwater leakage.",
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AU - Neuweiler, Insa

N1 - Funding information: We want to thank the associate editor and the three anonymous reviewers for investing the time to give a thorough and productive feedback. The feedback helped inprove the manuscript significantly. We thank Bora Shehu for providing precipitation data, and Yibo Zhu, Robert Sämann and Simon Berkhahn for discussion. The research is being conducted within the BMBF funded research project EVUS (EVUS – Real-Time Prediction of Pluvial Floods and Induced Water Contamination in Urban Areas) [BMBF, 03G0846A].

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N2 - In urban stormwater pipe networks, pipe leakage may lead to reduction of groundwater recharge, to significant reduction of groundwater levels, and to subsurface contamination. In the present study, stormwater pipe leakage is simulated in a case study representing an urban catchment using the coupled groundwater-pipe network flow model OGS-HE. This model includes pipe flow, variably saturated subsurface flow and exchange fluxes to and from leaky pipes. The study area is a typical northern German urban catchment with a stormwater pipe network which is located partly below and above groundwater. The successful calibration of a groundwater model is shown. Based on the calibrated groundwater model, stormwater pipe leakage for pipe networks of different ages and different pipe defect sizes is investigated for dry-weather flow conditions and rainfall conditions. It is shown that standard defects with a size of 10-4 m2 per m pipe can result in a groundwater infiltration into the leaky pipe network, which is in the order of annual groundwater recharge. The same standard defect size leads to a reduction of local groundwater levels by several meters. Rain events of increasing return period reduce groundwater infiltration into leaky pipes and increase stormwater exfiltration from leaky pipes, while the temporal distribution of a rain event has no effect on stormwater leakage.

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