Estimating Ground Water Discharge by Hydrograph Separation

Hannula, S.R.; Esposito, K.J.; Chermak, John A.; Runnells, Donald D.; Keith, David C.; Hall, Larry E.

doi:10.1111/j.1745-6584.2003.tb02606.x

Cited by 13 publications

(6 citation statements)

References 4 publications

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“…An estimation of groundwater contribution to streamflow can be realized by separating a stream hydrograph into the different runoff components, such as baseflow and quickflow, and then assuming that baseflow represents groundwater discharge into the stream (e.g., Meyboom, 1961;Mau and Winter, 1997;Hannula et al, 2003;Wittenberg, 20 2003). Numerous methods are used for hydrograph separation, including graphical techniques (e.g., Horton, 1933;Barnes, 1939;Chow, 1964), or employing numerical algorithms (e.g., Lyne and Hollick, 1979;Pettyjohn and Henning, 1979;Boughton, 1993;Jakeman and Hornberger, 1993).…”

Section: Hydrograph Separationmentioning

confidence: 99%

Measuring methods for groundwater, surface water and their interactions: a review

Kalbus¹,

Reinstorf²,

Schirmer³

2006

Preprint

182

262

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Interactions between groundwater and surface water play a critical role in the functioning of riparian ecosystems. In the context of sustainable river basin management it is crucial to understand and quantify exchange processes between groundwater and surface water. Numerous well-known methods exist for parameter estimation and process 5 identification in aquifers and surface waters. The transition zone, however, has only in recent years become a subject of major research interest, and the need has evolved for appropriate methods applicable in this zone. This article provides an overview of the methods that are typically used in aquifers and surface waters when studying interactions and shows the possibilities of application in the transition zone. In addition, 10 methods particularly for use in the transition zone are presented. Considerations for choosing appropriate methods are given including spatial and temporal scales, uncertainties, and limitations in application. It is concluded that a multi-scale approach combining multiple measuring methods may considerably constrain estimates of fluxes between groundwater and surface water. 15 25 ever, due to infiltration of stream water into the pore space, the zone may contain 1810 Abstract Introduction Conclusions References Tables FiguresBack Close Full Screen / EscPrinter-friendly Version Interactive DiscussionEGU some proportion of stream water, conferring on it features of the surface water zone as well. Ecologists have termed this area the hyporheic zone (Schwoerbel, 1961) and highlighted the significance of exchange processes for the biota and metabolism of streams (Hynes, 1983; Brunke and Gonser, 1997). For the protection of water resources it is crucial to understand and quantify exchange processes and pathways 5 between groundwater and surface water. Particularly in case of contamination, it is fundamental to know the mass flow rates between groundwater and surface water for the implementation of restoration measures. Woessner (2000) stressed the need for hydrogeologists to extend their focus and investigate near-channel and in-channel water exchange, especially in the context of riparian management. 10Interactions between groundwater and surface water basically proceed in two ways: groundwater flows through the streambed into the stream (gaining stream), or stream water infiltrates through the sediments into the groundwater (losing stream). Often, a stream is gaining in some reaches and losing in other reaches. The direction of the exchange flow depends on the hydraulic head. In gaining reaches, the elevation of 15 the groundwater table is higher than the elevation of the stream stage. Conversely, in losing reaches the elevation of the groundwater table is lower than the elevation of the stream stage. A special case of losing streams is the disconnected stream, where the groundwater table is below the streambed and the stream is disconnected from the groundwater system by an unsaturated zone. Seasonal variations in precipitation 20 patterns as well as sin...

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Section: Hydrograph Separationmentioning

confidence: 99%

Measuring methods for groundwater, surface water and their interactions: a review

Kalbus¹,

Reinstorf²,

Schirmer³

2006

Preprint

182

262

View full text Add to dashboard Cite

show abstract

“…An estimation of the groundwater contribution to streamflow can be realized by separating a stream hydrograph into the different runoff components, such as baseflow and quickflow (e.g., Chow, 1964;Linsley et al, 1988;Hornberger et al, 1998;Davie, 2002), and then assuming that baseflow represents groundwater discharge into the stream (e.g., Mau and Winter, 1997;Hannula et al, 2003).…”

Section: Hydrograph Separationmentioning

confidence: 99%

Measuring methods for groundwater – surface water interactions: a review

Kalbus

Reinstorf

Schirmer

2006

Hydrol. Earth Syst. Sci.

622

349

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Abstract.Interactions between groundwater and surface water play a fundamental role in the functioning of riparian ecosystems. In the context of sustainable river basin management it is crucial to understand and quantify exchange processes between groundwater and surface water. Numerous well-known methods exist for parameter estimation and process identification in aquifers and surface waters. Only in recent years has the transition zone become a subject of major research interest; thus, the need has evolved for appropriate methods applicable in this zone. This article provides an overview of the methods that are currently applied and described in the literature for estimating fluxes at the groundwater -surface water interface. Considerations for choosing appropriate methods are given including spatial and temporal scales, uncertainties, and limitations in application. It is concluded that a multi-scale approach combining multiple measuring methods may considerably constrain estimates of fluxes between groundwater and surface water.

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“…Recession curves give a direct representation of channel storage effects and storage delay times because they express the drained volume from the basin groundwater (Boughton and Askew 1968; Hall 1968; Riggs 1985). Consequently, the storage coefficient can be determined using the following formulation (Hannula et al 2003; Chen et al 2012):

S = \frac{Q_{1}}{kA Y_{1}},

where

Q_{1}

is a streamflow rate at a specified time (m 3 /a),

k

is a recession constant, and

Y_{1}

is an average groundwater stage (m) at a specified time (years). After the peak of a recession event, a recession constant increases with time for a short time interval (phase I) because it is modulated by surface flows (Biswal and Nagesh Kumar 2014).…”

Section: Methodsmentioning

confidence: 99%

“…Recession curves give a direct representation of channel storage effects and storage delay times because they express the drained volume from the basin groundwater (Boughton and Askew 1968;Hall 1968;Riggs 1985). Consequently, the storage coefficient can be determined using the following formulation (Hannula et al 2003;Chen et al 2012):…”

Section: Groundwater Net Rechargementioning

confidence: 99%

Catchment‐Wide Groundwater Budget for the Inkomati‐Usuthu Water Management Area in South Africa

Shakhane,

Mojabake

2024

Groundwater

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In South Africa, approximately 98% of the predicted total surface water resources are already being used up. Consequently, the National Water Resource Strategy considers groundwater to be important for the future planning and management of water resources. In this case, quantifying groundwater budgets is a prerequisite because they provide a means for evaluating the availability and sustainability of a water supply. This study estimated the regional groundwater budgets for the Inkomati‐Usuthu Water Management Area (Usuthu, Komati, Sabie‐Sand, and Crocodile) using the classical hydrological continuity equation. The equation was used to describe prevailing feedback loops between groundwater draft, recharge, baseflow, and storage change. The results were coarser scale estimates which, beforehand, were derived from the 2006 study. In the years to follow, groundwater reliance intensified and there was also the historic 2015/2016 drought. This inevitably led to an increased draft while the rest of the components of the groundwater budgets experienced decreases. Both Crocodile and Sabie‐Sand experienced groundwater storage depletion which led to reduced baseflow and groundwater availability, while groundwater recharge contrarily increased due to capture. Conversely, the other two catchments experienced relatively lower drafts with correspondingly higher groundwater availability and recharge while storage change was positive. The results highlighted the need for adaptive water management whose effectiveness relies on predictive studies. Consequently, future models should be developed to capture the spatial and temporal dynamism of the natural groundwater budget due to climate change, water demands, and population growth predictions.

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Estimating Ground Water Discharge by Hydrograph Separation

Cited by 13 publications

References 4 publications

Measuring methods for groundwater, surface water and their interactions: a review

Measuring methods for groundwater, surface water and their interactions: a review

Measuring methods for groundwater – surface water interactions: a review

Catchment‐Wide Groundwater Budget for the Inkomati‐Usuthu Water Management Area in South Africa

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