Recession slope curve analysis under human interferences

Wang, Dingbao; Cai, Ximing

doi:10.1016/j.advwatres.2010.06.010

Cited by 36 publications

(39 citation statements)

References 49 publications

(91 reference statements)

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“…Several studies document seasonal effects on the baseflow response due to changes in evapotranspiration (ET) (Szilagyi et al, 2007;Wang and Cai, 2009). Wang and Cai (2010) and Thomas et al (2013) derive similar equations to Brutsaert and Nieber (1977) that account for the impact of groundwater withdrawals on hydrograph recessions, which we consider in Section 3.4. Rupp and Selker (2006) address estimation of dQ/dt given various Dt; for this study, we use Dt = 1 day to match the averaging period of the most commonly available U.S. Geological Survey streamflow data.…”

Section: Theoretical Backgroundmentioning

confidence: 99%

“…We note that for the basin with significant groundwater withdrawals, use of (4) including groundwater withdrawals leads to a very different recession slope than use of (4) with W = 0. Note that all previous studies prior to Wang and Cai (2010) and Thomas et al (2013) have generally ignored the impact of W when estimating b.…”

Section: The Impact Of Water Withdrawals On Hydrograph Recessionsmentioning

confidence: 99%

“…Wang and Cai (2010) and Thomas et al (2013) considered the addition of a groundwater withdrawal variable in the traditional formulation of baseflow recessions introduced earlier by Brutsaert and Nieber (1977). We hypothesize that inclusion of water withdrawal terms Fig.…”

Section: The Impact Of Water Withdrawals On Hydrograph Recessionsmentioning

confidence: 99%

“…where w j is the daily average withdrawal for hydrograph recession j, Q j represents the average streamflow over the jth hydrograph recession, and m i is the total number of observed hydrograph recessions available at site i.We incorporate the method proposed by Wang and Cai (2010) that includes groundwater withdrawals (W) into the analysis, so that now…”

Section: The Impact Of Water Withdrawals On Hydrograph Recessionsmentioning

confidence: 99%

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Objective hydrograph baseflow recession analysis

Thomas

Vogel

Famiglietti

2015

Journal of Hydrology

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Keywords:Hydromorphology Groundwater/surface water interaction Quantile regression Numerical derivative Linear reservoir Water withdrawal s u m m a r y A streamflow hydrograph recession curve expresses the theoretical relationship between aquifer structure and groundwater outflow to a stream channel. That theoretical relationship is often portrayed empirically using a recession plot defined as a plot of ln(ÀdQ/dt) versus ln(Q), where Q is streamflow discharge. Such hydrograph recession plots are commonly used to estimate recession parameters, aquifer properties and for evaluating alternative hydrologic hypotheses. We introduce a comprehensive and objective approach to analyze baseflow recessions with innovations including the use of quantile regression, efficient and objective numerical estimation of dQ/dt, inclusion of groundwater withdrawals, and incorporation of seasonal effects. We document that these innovations when all combined, lead to significant improvements, over previous studies, in our ability to discern the theoretical behavior of stream aquifer systems. A case study reveals that our methodology enables us to reject the simple linear reservoir hypothesis of stream aquifer interactions for watersheds in New Jersey and results in improved correlations between low flow statistics and aquifer properties for those same watersheds.

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Section: Theoretical Backgroundmentioning

confidence: 99%

Section: The Impact Of Water Withdrawals On Hydrograph Recessionsmentioning

confidence: 99%

Section: The Impact Of Water Withdrawals On Hydrograph Recessionsmentioning

confidence: 99%

Section: The Impact Of Water Withdrawals On Hydrograph Recessionsmentioning

confidence: 99%

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Objective hydrograph baseflow recession analysis

Thomas

Vogel

Famiglietti

2015

Journal of Hydrology

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“…These equations do not allow the complete characterization of the RC (Mangin, 1970). Because of this, several authors have proposed more complex models that consider the effects of several regimes (components) within the RC (Drogue, 1972;Malik, 2015;Vasileva and Komatina, 1997;Wang and Cai, 2010).…”

Section: Introductionmentioning

confidence: 99%

An alternative approach in hydrograph decomposition and separation of the baseflow

Aguilar

Gómez²,

Pellat

2017

Journal of Hydrology and Hydromechanics

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Abstract:The identification of the moment when direct flow ends and baseflow begins is one of the biggest challenges of hydrological cycle modeling. The objectives of this research were: to characterize the recession curves (RC) and to separate the components of the hydrograph in a compact model. The RC were extracted from time series in three subwatersheds in Mexico. An expo-linear model was adapted and fitted to the master recession curves to find the transition point of the hydrograph and separate the baseflow. The model discriminated the RC in two decreasing ratios: one linear associated to the direct flow, and one exponential linked to the baseflow. The transition point between these two flows was obtained analytically by equaling both ratios. The derivation of a model parameter allowed to find the maximum points in the hydrometric time series, which were the criterion to separate the baseflow. The application of this model is recommended in the analysis of RC with different magnitudes from the flexibility and attachment to the fundaments of exhaustion of a reservoir.

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A stochastic model of streamflow for urbanized basins

Mejía

Daly

Rossel

et al. 2014

Water Resources Research

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Given the critical role of the streamflow regime for instream, riparian, and floodplain ecosystem sustainability, modeling the long-term effect of urbanization on streamflow is important to predict possible changes in stream ecosystems. Since flow duration curves are largely used to characterize the streamflow regime and define indices for stream ecosystem health, we present two stochastic models, with different levels of complexity, that link the key physical features of urbanized basins with rainfall variability to determine the resulting flow duration curves. The two models are tested against 11 basins with various degrees of urban development, characterized by the percentage of impervious areas in the basin. Results show that the more complex model needs to be used to reproduce accurately the entire flow duration curve. The analysis performed suggests that the transformation of green (i.e., water used in evapotranspiration) to blue (i.e., streamflow) water in urbanized basins is an important long-term source of ecohydrological alteration. The modeling scheme also provides useful links between rainfall variability, urbanization levels, and some streamflow indices of high and low flows.

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Recession slope curve analysis under human interferences

Cited by 36 publications

References 49 publications

Objective hydrograph baseflow recession analysis

Objective hydrograph baseflow recession analysis

An alternative approach in hydrograph decomposition and separation of the baseflow

A stochastic model of streamflow for urbanized basins

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