2-D water quality modelling of a drinking water reservoir

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Title:2-D water quality modelling of a drinking water reservoir
Creators:
Růžička, Martin; ruzickam at esnet dot cz; Institute of Hydrodynamics AS CR, Pod Paťankou 5, 166 12 Prague 6, Czech Republic
Hejzlar, Josef; hejzlar at hbu dot cas dot cz; Hydrobiological Institute AS CR and Faculty of Biological Sciences USB, Na Sádkách 7, 370 05 České Budějovice, Czech Republic
Mikešová, Petra; Hydrobiological Institute AS CR and Faculty of Biological Sciences USB, Na Sádkách 7, 370 05 České Budějovice, Czech Republic
Cole, Thomas M.; USACE, Waterways Experiment Station, Halls Ferry Road, Vicksburg MS, USA
Journal or Publication Title:
Journal of Hydrology and Hydromechanics, 50, 3, pp. 258-272
Uncontrolled Keywords:CE-QUAL-W2, Coupled Hydrodynamic-Ecological Model, Dimictic Stratified Reservoir, Sensitivity Analysis, Validation

Abstract

Management of reservoirs for drinking water supply should be based on a thorough knowledge of water quality changes within variable conditions of hydrology, climate, nutrient loading and water storage. The two-dimensional longitudinal water quality model CE-QUAL-W2 was tested for its ability to predict concentrations of organic matter and trophic conditions in Rimov Reservoir, a small dimictic reservoir (volume 33,000,000 m3, maximum depth 43 m, hydraulic retention time 40 to 160 d) suffering from seasonally increased concentrations of humic substances and symptoms of eutrophication. The model was calibrated on two seasonal courses differing in hydrology and validated on a 1074 day period. The averages of absolute mean errors between simulated and measured vertical profiles of temperature, and concentrations of dissolved organic matter, dissolved oxygen and chlorophyll a in the validation run were 0.9 °C, 0.8 mg l-1, 1.2 mg l-1 and 0.008 mg l-1, respectively. Analysis of results and sensitivity analysis of modelling phytoplankton and phosphorus showed suitability of the mathematical description of their dynamics in the photic zone but not in the deeper layers. In spite of this partial problem, the model was found appropriate for the reliable predictions of water quality dynamics in Rimov Reservoir.

Official URL: http://147.213.145.2/vc/vc1.asp

Title:2-D water quality modelling of a drinking water reservoir
Translated title:Simulace kvality vody ve vodárenských nádržích
Creators:
Růžička, Martin; ruzickam at esnet dot cz; Institute of Hydrodynamics AS CR, Pod Paťankou 5, 166 12 Prague 6, Czech Republic
Hejzlar, Josef; hejzlar at hbu dot cas dot cz; Hydrobiological Institute AS CR and Faculty of Biological Sciences USB, Na Sádkách 7, 370 05 České Budějovice, Czech Republic
Mikešová, Petra; Hydrobiological Institute AS CR and Faculty of Biological Sciences USB, Na Sádkách 7, 370 05 České Budějovice, Czech Republic
Cole, Thomas M.; USACE, Waterways Experiment Station, Halls Ferry Road, Vicksburg MS, USA
Uncontrolled Keywords:CE-QUAL-W2, Coupled Hydrodynamic-Ecological Model, Dimictic Stratified Reservoir, Sensitivity Analysis, Validation
Subjects:T Technology > TA Engineering (General). Civil engineering (General)
Divisions:Mathematics, Physics and Earth Sciences > Institute of Hydrodynamics > Journal of Hydrology and Hydromechanics
Journal or Publication Title:Journal of Hydrology and Hydromechanics
Volume:50
Number:3
Page Range:pp. 258-272
ISSN:0042-790X
Publisher:Institute of Hydrology of the Slovak Academy of Sciences and the Institute of Hydrodynamics of the Academy of Sciences of the Czech Republic
Related URLs:
URLURL Type
http://avi.lib.cas.cz/node/55Publisher
ID Code:6140
Item Type:Article
Deposited On:25 Jun 2010 17:51
Last Modified:25 Jun 2010 15:51

Citation

Růžička, Martin; Hejzlar, Josef; Mikešová, Petra; Cole, Thomas M. (2002) 2-D water quality modelling of a drinking water reservoir. Journal of Hydrology and Hydromechanics, 50 (3). pp. 258-272. ISSN 0042-790X

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