Watershed groundwater balance estimation using streamflow recession analysis and baseflow separation

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Watershed groundwater balance estimation using streamflow recession analysis and baseflow separation. / Wittenberg, Hartmut; Sivapalan, Murugesu.
in: Journal of Hydrology, Jahrgang 219, Nr. 1-2, 01.06.1999, S. 20-33.

Publikation: Beiträge in ZeitschriftenZeitschriftenaufsätzeForschungbegutachtet

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@article{4d0d7e4054284f6e83c5d23f62a6a4f9,
title = "Watershed groundwater balance estimation using streamflow recession analysis and baseflow separation",
abstract = "By the analysis of the observed time series of streamflow from catchments, the main components of the underlying groundwater balance, namely, discharge, evapotranspiration loss, storage and recharge, can be identified and quantified. This holistic (as opposed to reductionist) estimation method is demonstrated for the Harris River catchment in southwest Western Australia. The relationship between the groundwater discharge and the reservoir storage of shallow unconfined aquifers was found to be nonlinear based on the analysis of numerous streamflow recession curves. However, depletion of groundwater by evapotranspiration losses, through the water uptake of tree roots, was found to bias the recession curves and the estimated reservoir parameters. As a result of the seasonality of both rainfall and potential evaporation, analysis of the recession curves, stratified according to time of the year, allowed the quantification of evapotranspiration loss as a function of calendar month and stored groundwater storage. Time series of recharge to the groundwater aquifer were computed from the observed total streamflows, and the estimated discharge and evapotranspiration losses, by inverse nonlinear reservoir routing. Using traditional unit hydrograph methods unit recharge responses to rainfall were computed by least squares fitting. The shapes of the estimated unit response functions showed no significant seasonal variation.",
keywords = "Baseflow recession, Baseflow separation, Groundwater balance, Nonlinear reservoir, Recharge response, Engineering",
author = "Hartmut Wittenberg and Murugesu Sivapalan",
note = "This work was performed during the sabbatical visit of the first author at the Centre for Water Research, University of Western Australia. The stay was funded by the Deutsche Forschungsgemeinschaft, Germany. The first author is pleased to acknowledge this financial support, as well as the assistance and support provided by the Centre for Water Research. CWR Reference ED 1381 MS.",
year = "1999",
month = jun,
day = "1",
doi = "10.1016/S0022-1694(99)00040-2",
language = "English",
volume = "219",
pages = "20--33",
journal = "Journal of Hydrology",
issn = "0022-1694",
publisher = "Elsevier B.V.",
number = "1-2",

}

RIS

TY - JOUR

T1 - Watershed groundwater balance estimation using streamflow recession analysis and baseflow separation

AU - Wittenberg, Hartmut

AU - Sivapalan, Murugesu

N1 - This work was performed during the sabbatical visit of the first author at the Centre for Water Research, University of Western Australia. The stay was funded by the Deutsche Forschungsgemeinschaft, Germany. The first author is pleased to acknowledge this financial support, as well as the assistance and support provided by the Centre for Water Research. CWR Reference ED 1381 MS.

PY - 1999/6/1

Y1 - 1999/6/1

N2 - By the analysis of the observed time series of streamflow from catchments, the main components of the underlying groundwater balance, namely, discharge, evapotranspiration loss, storage and recharge, can be identified and quantified. This holistic (as opposed to reductionist) estimation method is demonstrated for the Harris River catchment in southwest Western Australia. The relationship between the groundwater discharge and the reservoir storage of shallow unconfined aquifers was found to be nonlinear based on the analysis of numerous streamflow recession curves. However, depletion of groundwater by evapotranspiration losses, through the water uptake of tree roots, was found to bias the recession curves and the estimated reservoir parameters. As a result of the seasonality of both rainfall and potential evaporation, analysis of the recession curves, stratified according to time of the year, allowed the quantification of evapotranspiration loss as a function of calendar month and stored groundwater storage. Time series of recharge to the groundwater aquifer were computed from the observed total streamflows, and the estimated discharge and evapotranspiration losses, by inverse nonlinear reservoir routing. Using traditional unit hydrograph methods unit recharge responses to rainfall were computed by least squares fitting. The shapes of the estimated unit response functions showed no significant seasonal variation.

AB - By the analysis of the observed time series of streamflow from catchments, the main components of the underlying groundwater balance, namely, discharge, evapotranspiration loss, storage and recharge, can be identified and quantified. This holistic (as opposed to reductionist) estimation method is demonstrated for the Harris River catchment in southwest Western Australia. The relationship between the groundwater discharge and the reservoir storage of shallow unconfined aquifers was found to be nonlinear based on the analysis of numerous streamflow recession curves. However, depletion of groundwater by evapotranspiration losses, through the water uptake of tree roots, was found to bias the recession curves and the estimated reservoir parameters. As a result of the seasonality of both rainfall and potential evaporation, analysis of the recession curves, stratified according to time of the year, allowed the quantification of evapotranspiration loss as a function of calendar month and stored groundwater storage. Time series of recharge to the groundwater aquifer were computed from the observed total streamflows, and the estimated discharge and evapotranspiration losses, by inverse nonlinear reservoir routing. Using traditional unit hydrograph methods unit recharge responses to rainfall were computed by least squares fitting. The shapes of the estimated unit response functions showed no significant seasonal variation.

KW - Baseflow recession

KW - Baseflow separation

KW - Groundwater balance

KW - Nonlinear reservoir

KW - Recharge response

KW - Engineering

UR - http://www.scopus.com/inward/record.url?scp=0033019471&partnerID=8YFLogxK

U2 - 10.1016/S0022-1694(99)00040-2

DO - 10.1016/S0022-1694(99)00040-2

M3 - Journal articles

AN - SCOPUS:0033019471

VL - 219

SP - 20

EP - 33

JO - Journal of Hydrology

JF - Journal of Hydrology

SN - 0022-1694

IS - 1-2

ER -

DOI

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