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Open AccessArticle

Evaluation of Hydrological Alterations at the Sub-Daily Scale Caused by a Small Hydroelectric Facility

1
Program in Water Resources, Federal University of Mato Grosso, Cuiabá 78060-900, Brazil
2
School of Engineering, University of Mount Union, Alliance, OH 44601, USA
3
Department of Sanitary and Environmental Engineering, Federal University of Mato Grosso, Cuiabá 78060-900, Brazil
*
Author to whom correspondence should be addressed.
Water 2021, 13(2), 206; https://doi.org/10.3390/w13020206
Received: 7 December 2020 / Revised: 11 January 2021 / Accepted: 13 January 2021 / Published: 16 January 2021
(This article belongs to the Special Issue Sustainable Development of Lakes and Reservoirs)
This work aims to evaluate the hydrologic changes caused by a small hydropower plant on the watercourse in which it is installed. Since hydrologic research with data of temporal frequencies less than a day is less common than daily measurements, there are few indicators and methodologies capable of treating such records. For this reason, 17 indicators are proposed which describe the magnitude, duration, frequency and rate of changes in hydrologic conditions occurring in a watercourse at a sub-daily frequency. These 17 indicators were used to assess changes in the flow regimes at sub-daily scales across the Itiquira hydroelectric facility in Mato Grosso, Brazil. During the dry season the river was more susceptible to hydroelectric operations than during the wet season. Eighty-eight percent of the proposed indicators were significantly altered during the dry season compared to 71% during the rainy season. In addition to the number of indicators that changed between the seasons, the magnitude of the change was different. During the dry season, 53% of the magnitudes of the proposed indicators were classified as having a high magnitude of change, while in the rainy season only 6% of the indicators were characterized as having a high magnitude of change. View Full-Text
Keywords: run-of-river; hydropeaking; sub-daily hydrologic indicators; Pantanal run-of-river; hydropeaking; sub-daily hydrologic indicators; Pantanal
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MDPI and ACS Style

Braun-Cruz, C.C.; Tritico, H.M.; Beregula, R.L.; Girard, P.; Zeilhofer, P.; Ribeiro, L.d.S.; Fantin-Cruz, I. Evaluation of Hydrological Alterations at the Sub-Daily Scale Caused by a Small Hydroelectric Facility. Water 2021, 13, 206. https://doi.org/10.3390/w13020206

AMA Style

Braun-Cruz CC, Tritico HM, Beregula RL, Girard P, Zeilhofer P, Ribeiro LdS, Fantin-Cruz I. Evaluation of Hydrological Alterations at the Sub-Daily Scale Caused by a Small Hydroelectric Facility. Water. 2021; 13(2):206. https://doi.org/10.3390/w13020206

Chicago/Turabian Style

Braun-Cruz, Camila C.; Tritico, Hans M.; Beregula, Renato L.; Girard, Pierre; Zeilhofer, Peter; Ribeiro, Letícia d.S.; Fantin-Cruz, Ibraim. 2021. "Evaluation of Hydrological Alterations at the Sub-Daily Scale Caused by a Small Hydroelectric Facility" Water 13, no. 2: 206. https://doi.org/10.3390/w13020206

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