Enhancing urban runoff modelling using water stable isotopes and ages in complex catchments

dc.contributor.authorSmith, Aaron
dc.contributor.authorTetzlaff, Doerthe
dc.contributor.authorMarx, Christian
dc.contributor.authorSoulsby, Chris
dc.date.accessioned2023-06-07T14:44:09Z
dc.date.available2023-06-07T14:44:09Z
dc.date.issued2023-02-16
dc.date.updated2023-04-19T17:28:16Z
dc.description.abstractIncreased urbanization, coupled with the projected impacts of climatic change, mandates further evaluation of the impact of urban development on water flow paths to guide sustainable land‐use planning. Though the general urbanization impacts of increased storm runoff peaks and reduced baseflows are well known; how the complex, non‐stationary interaction of the dominant water fluxes within dynamic urban water stores sustain streamflow regimes over longer periods of time is less well quantified. In particular, there is a challenge in how hydrological modelling should integrate the juxtaposition of rapid and slower flow pathways of the urban ‘karst’ landscape and different approaches need evaluation. In this context, we utilized hydrological and water stable isotope datasets within a modelling framework that combined the commonly used Hydrologic Engineering Center Hydrological Modelling System (HEC‐HMS) urban runoff model along with a simple hydrological tracer module and transit time modelling to evaluate the spatial and temporal variation of water flow paths and ages within a heavily urbanized 217 km2 catchment in Berlin, Germany. Deeper groundwater was the primary flow component in the upper reaches of the catchment within fewer urbanized regions, while the addition of wastewater effluent in the mid‐reaches of the catchment was the dominant water supply to sustain baseflow in the lower main stem stream, with additional direct storm runoff and shallow subsurface contributions in the more urbanized lower reaches. Water ages from each modelling approach mirrored flow contributions and water age mixing potential in subsurface storage; with older average water and lower young water contributions in less urbanized sub‐catchments and younger average water and higher young water contributions in more urbanized regions. The results from the first step towards more integrated tracer‐aided hydrologic modelling tools for similar peri‐urban catchments, given the potential limitations of simpler model frameworks. The results have broader implications for assessing the uncertainty in evaluating urban impacts on hydrological function under environmental change.en
dc.description.sponsorshipDFG, 248198858, GRK 2032: Grenzzonen in urbanen Wassersystemen
dc.identifier.eissn1099-1085
dc.identifier.issn0885-6087
dc.identifier.urihttps://depositonce.tu-berlin.de/handle/11303/18830
dc.identifier.urihttps://doi.org/10.14279/depositonce-17635
dc.language.isoen
dc.relation.ispartof10.14279/depositonce-18518
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.subject.ddc500 Naturwissenschaften und Mathematik::550 Geowissenschaften, Geologie::551 Geologie, Hydrologie, Meteorologie
dc.subject.otherhydrological modelling
dc.subject.otherurban hydrology
dc.subject.otherwater ages
dc.subject.otherwater stable isotopes
dc.titleEnhancing urban runoff modelling using water stable isotopes and ages in complex catchmentsen
dc.typeArticle
dc.type.versionpublishedVersion
dcterms.bibliographicCitation.articlenumbere14814
dcterms.bibliographicCitation.doi10.1002/hyp.14814
dcterms.bibliographicCitation.issue2
dcterms.bibliographicCitation.journaltitleHydrological Processesen
dcterms.bibliographicCitation.originalpublishernameWiley
dcterms.bibliographicCitation.originalpublisherplaceNew York, NY
dcterms.bibliographicCitation.volume37
dcterms.rightsHolder.referenceCreative-Commons-Lizenz
tub.accessrights.dnbfree
tub.affiliationFak. 6 Planen Bauen Umwelt::Inst. Angewandte Geowissenschaften::FG Hydrogeologie
tub.publisher.universityorinstitutionTechnische Universität Berlin

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