Dissolved Oxygen Model for a Dynamic Reservoir

Martin, Scott C.; Effler, Steven W.; DePinto, Joseph V.; Trama, Francesco B.; Rodgers, Paul W.; Dobi, John S.; Wodka, Martin C.

doi:10.1061/(asce)0733-9372(1985)111:5(647)

Cited by 21 publications

(13 citation statements)

References 17 publications

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“…Low-DO at the hypolimnion would significantly accelerate the release of phosphorus from sediment, and thus promote the growth of algae through "turnover" (October to May) [50]. Evidence for this "turnover" or the upwelling of nutrient-rich water originating from the hypolimnion is also shown in the time series plots of ortho-P and TP (Figure 6c-f)).…”

Section: Water Quality State Variablesmentioning

confidence: 86%

Assessment of the Impacts of Climate Change on the Water Quality of a Small Deep Reservoir in a Humid-Subtropical Climatic Region

Chang

Cai

Lin

et al. 2015

Water

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Surface water quality has been identified as potentially vulnerable to climate change. This study assesses the impacts of climate change on the water quality of Hsinshan Reservoir, Taiwan, through CE-QUAL-W2 simulations. The model parameters were calibrated by field data collected during [2004][2005][2006][2007][2008], and verified against observations made during 2009-2012. The projected temperature and precipitation data for the near-and long-term future were downscaled to regional and daily scales, and used to simulate the projected changes in water quality through the validated model. The simulation results were reported as probability-based cumulative distribution functions to access the impacts of climate change on water quality. The results indicated that the intensified thermal stratification caused by the rising temperature is the primary driver of water quality decline, which increases the probability of deep-layer oxygen depletion and the flux of limiting nutrients for algae growth, resulting in a higher risk of algal blooms and eutrophication. The adaptation strategies of multilevel-intake operations and increasing bottom-layer dissolved oxygen without destratification are recommended. OPEN ACCESSWater 2015, 7 1688

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Section: Water Quality State Variablesmentioning

confidence: 86%

Assessment of the Impacts of Climate Change on the Water Quality of a Small Deep Reservoir in a Humid-Subtropical Climatic Region

Chang

Cai

Lin

et al. 2015

Water

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“…Thermal stratification is a ubiquitous phenomenon in deep lakes and reservoirs in temperate climates and is an important regulator of ecosystem metabolism and commonly monitored features of water quality (Stefan et al 1976;Effler and Owens 1996;Wetzel 2001). regime, such as its interplay with mixing, the vertical dimensions of stratified layers, the temperatures of the layers, and the duration of stratification, mediate the cycling of constituents, rates of biochemical processes including primary production, and the oxygen resources of hypolimnia (Powell and Jassby 1974;DiToro and Connolly 1980;Martin et al 1985;Lam and Schertzer 1987;Owens and Effler 1989). regime, such as its interplay with mixing, the vertical dimensions of stratified layers, the temperatures of the layers, and the duration of stratification, mediate the cycling of constituents, rates of biochemical processes including primary production, and the oxygen resources of hypolimnia (Powell and Jassby 1974;DiToro and Connolly 1980;Martin et al 1985;Lam and Schertzer 1987;Owens and Effler 1989).…”

Section: Introductionmentioning

confidence: 99%

Testing and application of a two-dimensional hydrothermal model for a water supply reservoir: implications of sedimentation

Gelda¹,

Effler²

2007

Journal of Environmental Engineering and Science

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Validation of a two-dimensional hydrothermal stratification model for 14 years for Schoharie Reservoir, N.Y., an impoundment that experiences substantial drawdown, is documented. The model is demonstrated to perform well in simulating the various features of the reservoir's thermal stratification regime in each of the years, including the timing and duration of stratification, the dimensions and temperature of the layers, and the periods of internal wave oscillations in stratified layers. The average root mean square error for temperature predictions for the 14 years is 1.30 • C. The validated model is applied in a probabilistic manner to investigate the impacts of sedimentation on the temperature of the withdrawn water (T w ) that enters a stream with a salmonid fishery, and features of the stratification regime. The predicted effects of sedimentation include a shift toward higher T w values, a shortening of the duration of stratification, and decrease in the depth of the epilimnion in fall. The effects on T w are exacerbated for the reservoir because of localized sedimentation adjoining the intake that increasingly limits access to cooler layers.Résumé : Cet article documente la validation d'un modèle de stratification hydrothermique bidimensionnel sur 14 années au réservoir Schoharie, NY, une retenue qui connaît des rabattements substantiels. Il est démontré que le modèle travaille bien lors de simulations des diverses caractéristiques du régime de stratification thermique du réservoir pour chacune des années, incluant le moment et la durée de la stratification, les dimensions et la température des couches ainsi que les périodes d'oscillations des vagues internes dans les couches stratifiées. L'erreur quadratique moyenne pour les prévisions de température pour les 14 années est de 1,30 • C. Le modèle validé est appliqué de manière probabiliste afin d'étudier les impacts de la sédimentation sur la température de l'eau soutirée (T w ), qui entre dans un ruisseau comportant une pêcherie de salmonidés; le modèle étudie aussi les caractéristiques du régime de stratification. Les effets prévus de la sédimentation comprennent un déplacement vers des valeurs T w plus élevées, un raccourcissement de la durée de stratification et une diminution de la profondeur de l'épilimnion à l'automne. Les effets sur les valeurs T w sont exacerbés pour le réservoir en raison d'une sédimentation localisée près de la prise d'eau en réservoir, ce qui limite de plus en plus l'accès aux couches plus froides.

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“…Moreover, stratification is a crucially important metabolic regulator of lakes and reservoirs and often fundamentally affects water quality (Hutchinson 1957, Wetzel 2001 by influencing the cycling of materials, primary production, rates of biochemical reactions, and oxygen resources (Bowie et al 1985, DiToro and Connolly 1980, Lam and Schertzer 1987, Martin et al 1985, Owens and Effler 1989, Powell and Jassby 1974, Wodka et al 1983.…”

mentioning

confidence: 99%

Application of a 2-Dimensional Water Quality Model (CE-QUAL-W2) to the Turbidity Interflow in a Deep Reservoir (Lake Soyang, Korea)

Kim

2006

Lake and Reservoir Management

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Dissolved Oxygen Model for a Dynamic Reservoir

Cited by 21 publications

References 17 publications

Assessment of the Impacts of Climate Change on the Water Quality of a Small Deep Reservoir in a Humid-Subtropical Climatic Region

Assessment of the Impacts of Climate Change on the Water Quality of a Small Deep Reservoir in a Humid-Subtropical Climatic Region

Testing and application of a two-dimensional hydrothermal model for a water supply reservoir: implications of sedimentation

Application of a 2-Dimensional Water Quality Model (CE-QUAL-W2) to the Turbidity Interflow in a Deep Reservoir (Lake Soyang, Korea)

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