CHANGES IN PHYSICAL AND CHEMICAL VARIABLES IN A NEW RESERVOIR DUE TO PUMPED STORAGE OPERATIONS<sup>1</sup>

Potter, Deborah Ulinski; Stevens, Michael P.; Meyer, Judy L.

doi:10.1111/j.1752-1688.1982.tb00045.x

Cited by 20 publications

(17 citation statements)

References 7 publications

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“…Further research could explore the potential induced changes on water quality and ecosystem health (Anderson, 2010;Potter, Stevens, & Meyer, 1982), and the role of the intake-outlet location and design on limiting those (Bermúdez, Cea, Puertas, Rodríguez, & Baztán, 2017).…”

Section: Discussionmentioning

confidence: 99%

Hydraulic model study of the intake-outlet of a pumped-storage hydropower plant

Bermúdez

Cea

Puertas

et al. 2017

Engineering Applications of Computational Fluid Mechanics

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The design of intake-outlet structures for pumped-storage hydroelectric power plants requires sitespecific location and geometry studies in order to ensure their satisfactory hydraulic performance. This article presents the numerical and physical model studies conducted on the lower intake-outlet of Belesar III power station in Northwest Spain. The proposed location of this structure in a narrow reservoir and at a shallow depth is particularly challenging and required the analysis of both the near-field and far-field flow dynamics in the reservoir. First, the hydrodynamics of the reservoir were studied with a 2D shallow water model. The location of the intake was found to be suitable, with adequate flow conditions in the reservoir even for the lower operating water levels. The intake could be fed with the maximum pumping discharge without being limited by the reservoir's hydraulics. Second, the flow in the near-field was investigated by complementary use of 3-dimensional numerical simulations and reduced-scale physical modeling. The results allowed the verification of the submergence requirements and the comparison of geometry alternatives. In comparison with the initial design, the final proposed design shows a more symmetrical approach flow into the structure during pumping mode, resulting in a more homogenous flow distribution between the openings and reduced head loss. This study can provide guidance in the application of hydraulic modeling procedures to locate and design intake-outlet structures in existing lakes or reservoirs and to evaluate potential limitations on water levels, inflows and outflows. It can be useful during planning stages of power plants to aim for the shortest possible waterways between the reservoirs while ensuring adequate flow conditions. ARTICLE HISTORY

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Section: Discussionmentioning

confidence: 99%

Hydraulic model study of the intake-outlet of a pumped-storage hydropower plant

Bermúdez

Cea

Puertas

et al. 2017

Engineering Applications of Computational Fluid Mechanics

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“…These data as well as nutrient data are presented in Potter, et aL (1982). These data as well as nutrient data are presented in Potter, et aL (1982).…”

Section: Sampling Rocedurementioning

confidence: 99%

ZOOPLANKTON COMMUNITIES OF A NEW PUMPED STORAGE RESERVOIR¹

Potter

Meyer

1982

J American Water Resour Assoc

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Zooplankton colonization was followed for 16 months in Lake Oconee, Georgia, a new pumped storage reservoir. Data were interpreted to identify differences among stations and seasons, as a function of the reservoir's early stage of development and of pumped storage operations. Colonization was rapid, and the zooplankton community was characterized by a high species diversity; approximately 40 rotifer species and 14 cladoceran genera were recorded. Zooplankton density varied along an environmental gradient from riverine to lentic conditions. Rotifer abundance varied from 104‐106 individuals/m3, with maxima in the summers Copepod and cladoceran densities ranged from 103 to nearly 105 individuals/m3; maxima for stations other than the dam were observed in the summer and early fall, but high values at the dam station occurred throughout winter 1980. When pumped storage operations began in December 1979, zooplankton densities increased at the dam station. Pumpback decreased the intensity of the environmental gradient from riverine to lentic conditions, and led to a more similar zooplankton community structure throughout the reservoir.

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“…Maximum depth is 32 m and mean depth is 5.7 m. At full pool the reservoir stores 453,210,000 m3 of water. Average retention time is 86 days with a mean inflow of 59.5 m3/sec from the Oconee River (Potter, 1982).…”

Section: Introductionmentioning

confidence: 99%

“…Due to the shallowness of the basin and the mixing of the water column during pumpback operations, the reservoir does not stratify in the upper end and only partially stratifies at downstream areas near the dam. The reservoir is subject to normal daily water level fluctuations of about 0.5 m during generating cycles and pumpback (Potter, 1982). Three watersheds (861, 862, and a control (863)] were instrumented for study of insecticide movement in storm runoff (Neary, et aL, in prep.).…”

Section: Introductionmentioning

confidence: 99%

EFFECTS OF INSECTICIDE USE IN A PINE SEED ORCHARD ON PESTICIDE LEVELS IN FISH¹

Bush¹,

Neary

Taylor

et al. 1986

J American Water Resour Assoc

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A hydroelectric lake on the Oconee River in central Georgia was sampled on a quarterly basis for four years to determine the impact of three insecticides on the pesticide loading of fish. The insecticides carbofuran (2,3,‐dihydro‐2,2‐dimethyl‐7‐benzofuranyl methyl‐carbamate), fenvalerate [cyano(3‐phenoxyphenyl)methyl 4‐chloro alpha (1‐methylethyl)benzeneacetate], and azinphosmethyl [0,0‐Dimethyl S‐(4‐oxo‐1,2,3‐benzotriazin‐3‐(4H)‐ylmethyl phosphorodithioate] were used to control cone and seed insects on a pine seed orchard that is adjacent to Lake Oconee. Fish populations in areas of the lake that receive runoff from treated and untreated portions of the seed orchard were sampled using gill nets. Water and fish samples were collected monthly in 1981–1983 and quarterly in 1984. Species collected included carp (Cyprinus carpio), sucker (Catostomus spp., Erimyzon spp., Moxostoma spp., Minytrema spp.), bass (Micropterus spp.), channel catfish (Ictalurus punctatus), spotted gar (Lepisosteus spp.), and bluegill sunfish (Lepomis macrochirus). Few carbofuran residues (< 7 percent of fish samples contained detectable residues) and no azinphosmethyl or fenvalerate residues were detected despite measured inputs into the lake after insecticide application. Persistent agricultural insecticides including dieldrin, lindane, DDT, and toxaphene were detected in 32, 36, 58, and 83 percent of sampled fish, respectively. Screening for 20 other insecticides resulted in no detection of residues at a detection limit of 30–100 μg kg‐1.

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CHANGES IN PHYSICAL AND CHEMICAL VARIABLES IN A NEW RESERVOIR DUE TO PUMPED STORAGE OPERATIONS¹

Cited by 20 publications

References 7 publications

Hydraulic model study of the intake-outlet of a pumped-storage hydropower plant

Hydraulic model study of the intake-outlet of a pumped-storage hydropower plant

ZOOPLANKTON COMMUNITIES OF A NEW PUMPED STORAGE RESERVOIR¹

EFFECTS OF INSECTICIDE USE IN A PINE SEED ORCHARD ON PESTICIDE LEVELS IN FISH¹

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CHANGES IN PHYSICAL AND CHEMICAL VARIABLES IN A NEW RESERVOIR DUE TO PUMPED STORAGE OPERATIONS1

Cited by 20 publications

References 7 publications

Hydraulic model study of the intake-outlet of a pumped-storage hydropower plant

Hydraulic model study of the intake-outlet of a pumped-storage hydropower plant

ZOOPLANKTON COMMUNITIES OF A NEW PUMPED STORAGE RESERVOIR1

EFFECTS OF INSECTICIDE USE IN A PINE SEED ORCHARD ON PESTICIDE LEVELS IN FISH1

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Product

Resources

About

CHANGES IN PHYSICAL AND CHEMICAL VARIABLES IN A NEW RESERVOIR DUE TO PUMPED STORAGE OPERATIONS¹

ZOOPLANKTON COMMUNITIES OF A NEW PUMPED STORAGE RESERVOIR¹

EFFECTS OF INSECTICIDE USE IN A PINE SEED ORCHARD ON PESTICIDE LEVELS IN FISH¹