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Water 2017, 9(9), 613; https://doi.org/10.3390/w9090613

Reconstruction of an Acid Water Spill in a Mountain Reservoir

1
Engineering Division, University of Guanajuato, Av. Juarez 77 Centro P.C., 36000 Guanajuato, Gto., Mexico
2
Institute of Environment Assessment and Water Research (IDAEA), CSIC, C/Jordi Girona 18-26, 08034 Barcelona, Spain
3
Department of Geodynamics and Paleontology, Faculty of Experimental Sciences, University of Huelva, 21071 Huelva, Spain
*
Author to whom correspondence should be addressed.
Received: 23 June 2017 / Revised: 28 July 2017 / Accepted: 2 August 2017 / Published: 1 September 2017
(This article belongs to the Special Issue Water Quality Monitoring and Modeling in Lakes)
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Abstract

The Olivargas Reservoir is located in a remote and scarcely monitored area in the Odiel River Basin (Southwest Spain) and is used for domestic, agricultural and mining water supplies. In contrast with highly monitored reservoirs, this paper explores the application of the CE-QUAL-W2 model, that was designed by Cole and Wells in 2005, to a poorly monitored reservoir and the utility of the results obtained. The model satisfactorily reproduced the water head measured continuously over three years, temperature (T), total dissolved solids (TDS), dissolved oxygen (DO) and pH measured bimonthly in a depth profile near the dam. A significant increase in TDS and decrease in DO and pH profiles were observed for four months, especially in the hypolimnion. The model reproduced changes in the parameters by assuming the occurrence of an acid water spill into the reservoir. A comparison of calculated results and measured TDS and DO prompted the conclusion that the spill consisted of approximately 3000 t of TDS (mainly sulfates) and 26 t of Fe(II) flowing into the reservoir for approximately 15 days at rates of approximately two and 0.02 kg/s, respectively. View Full-Text
Keywords: CE-QUAL-W2; acid water spill; Olivargas Reservoir; water reservoir management CE-QUAL-W2; acid water spill; Olivargas Reservoir; water reservoir management
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Jofre-Meléndez, R.; Torres, E.; Ramos-Arroyo, Y.R.; Galván, L.; Ruiz-Cánovas, C.; Ayora, C. Reconstruction of an Acid Water Spill in a Mountain Reservoir. Water 2017, 9, 613.

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