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Incorporating natural variability in master recession curves.

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Title: Incorporating natural variability in master recession curves.
Authors: McMahon, Thomas A.1 (AUTHOR), Nathan, Rory J.1 (AUTHOR) rory.nathan@unimelb.edu.au, George, Richard2 (AUTHOR)
Source: Hydrology & Earth System Sciences. 2026, Vol. 30 Issue 3, p893-903. 11p.
Subject Terms: *Percentiles, *Aquifers, *Runoff models, *Runoff
Abstract: In this paper we hypothesise that there is a continuum of recession curves that can be represented by a single (average) Master Recession Curve (MRC) or by a family of percentile curves. The continuum of MRCs represents the natural variability, which is the aleatory uncertainty across the continuum, and is the result of variability in antecedent hydroclimatic and heterogeneous storage conditions in unconfined aquifer/s supplying streamflow. For four streams spanning the range of Australian hydrology, master recession curves were computed for antecedent conditions with exceedance percentiles ranging from 10 % to 90 % using the correlation technique. Observed recessions were superimposed on the plots confirming that the continuum of MRCs represented the observed variability in antecedent conditions. For one catchment, the Northern Arthur River (437 km2 in Western Australia yielding 2.7 mm runoff per year), field data were available. These were used to develop a two-store qualitative model that supports the continuum concept. [ABSTRACT FROM AUTHOR]
Database: Energy & Power Source
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Header DbId: enr
DbLabel: Energy & Power Source
An: 191696522
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
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  Label: Title
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  Data: Incorporating natural variability in master recession curves.
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  Data: <searchLink fieldCode="AR" term="%22McMahon%2C+Thomas A%2E%22">McMahon, Thomas A.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Nathan%2C+Rory J%2E%22">Nathan, Rory J.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> rory.nathan@unimelb.edu.au</i><br /><searchLink fieldCode="AR" term="%22George%2C+Richard%22">George, Richard</searchLink><relatesTo>2</relatesTo> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22Hydrology+%26+Earth+System+Sciences%22">Hydrology & Earth System Sciences</searchLink>. 2026, Vol. 30 Issue 3, p893-903. 11p.
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  Data: *<searchLink fieldCode="DE" term="%22Percentiles%22">Percentiles</searchLink><br />*<searchLink fieldCode="DE" term="%22Aquifers%22">Aquifers</searchLink><br />*<searchLink fieldCode="DE" term="%22Runoff+models%22">Runoff models</searchLink><br />*<searchLink fieldCode="DE" term="%22Runoff%22">Runoff</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: In this paper we hypothesise that there is a continuum of recession curves that can be represented by a single (average) Master Recession Curve (MRC) or by a family of percentile curves. The continuum of MRCs represents the natural variability, which is the aleatory uncertainty across the continuum, and is the result of variability in antecedent hydroclimatic and heterogeneous storage conditions in unconfined aquifer/s supplying streamflow. For four streams spanning the range of Australian hydrology, master recession curves were computed for antecedent conditions with exceedance percentiles ranging from 10 % to 90 % using the correlation technique. Observed recessions were superimposed on the plots confirming that the continuum of MRCs represented the observed variability in antecedent conditions. For one catchment, the Northern Arthur River (437 km2 in Western Australia yielding 2.7 mm runoff per year), field data were available. These were used to develop a two-store qualitative model that supports the continuum concept. [ABSTRACT FROM AUTHOR]
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      – Type: doi
        Value: 10.5194/hess-30-893-2026
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      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 11
        StartPage: 893
    Subjects:
      – SubjectFull: Percentiles
        Type: general
      – SubjectFull: Aquifers
        Type: general
      – SubjectFull: Runoff models
        Type: general
      – SubjectFull: Runoff
        Type: general
    Titles:
      – TitleFull: Incorporating natural variability in master recession curves.
        Type: main
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            NameFull: McMahon, Thomas A.
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            NameFull: Nathan, Rory J.
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            NameFull: George, Richard
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            – D: 01
              M: 02
              Text: 2026
              Type: published
              Y: 2026
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              Value: 30
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          Titles:
            – TitleFull: Hydrology & Earth System Sciences
              Type: main
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