Data-driven analysis and integrated modeling of climate change impacts on coastal groundwater and sanitary sewer infrastructure

Sangsefidi, Yousef; Barnes, Austin; Merrifield, Mark; Davani, Hassan

doi:10.1016/j.scs.2023.104914

i

Data-driven analysis and integrated modeling of climate change impacts on coastal groundwater and sanitary sewer infrastructure

2023
By Sangsefidi, Yousef ; Barnes, Austin ; Merrifield, Mark ; ...

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Journal Title:

Sustainable Cities and Society
Personal Author:

Sangsefidi, Yousef ; Barnes, Austin ; Merrifield, Mark ; Davani, Hassan
NOAA Program & Office:

NOAA General Documents
Description:

The variation of the coastal groundwater table and the vulnerability of sanitary sewer infrastructure under a changing climate is considered for Imperial Beach (CA, USA) by incorporating the compound impacts of Sea-Level Rise (SLR), groundwater shoaling, and precipitation intensification. For 2 m of SLR, marine inundation is expected to impact only 2% of the urbanized area; however, SLR-driven groundwater shoaling is projected to impact 36% of the subterranean sewer system. Due to GroundWater Infiltration (GWI) and Rainfall-Derived Inflow and Infiltration (RDII), the sanitary sewage flow increases by 21% and 49% during dry- (i.e., consecutive days without precipitation) and wet-weather conditions (i.e., 24-hour rainfall with a 25-year return period), respectively. At SLR = 2 m, defect flows (GWI + RDII) can be elevated by 84% and 120% in dry- and wet-weather conditions, respectively. Such elevated hydraulic loads may place $0.5−$2.7 M additional cost on the collection system and treatment facilities every year. Moreover, pressurized junctions due to the above-mentioned hydraulic loading are likely to expose the community and the environment to raw sewage pollution. By involving structural, hydrological, and hydraulic criteria, a holistic approach is presented and implemented for prioritizing sewer system rehabilitation.
Keywords:

Civil And Structural Engineering Geography, Planning And Development Renewable Energy, Sustainability And The Environment Transportation Civil And Structural Engineering Geography, Planning And Development Renewable Energy, Sustainability And The Environment Civil And Structural Engineering Geography, Planning And Development Renewable Energy, Sustainability And The Environment
Source:

Sustainable Cities and Society, 99, 104914
DOI:

https://doi.org/10.1016/j.scs.2023.104914
ISSN:

2210-6707
Format:

PDF
Publisher:

Elsevier BV
Document Type:

Journal Article
License:

https://creativecommons.org/licenses/by/4.0/
Rights Information:

CC BY
Compliance:

Library
Main Document Checksum:

urn:sha256:a14d12b5ff67c3f3e07890700ff356edcc26887f021bcfb7145443a386e10561
Download URL:

https://repository.library.noaa.gov/view/noaa/59012/noaa_59012_DS1.pdf
File Type:

[PDF - 14.37 MB ]

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