A revised range of variability approach for the comprehensive assessment of the alteration of flow regime

Yu, Chunxue; Yin, Xia; Zhang, Yang

doi:10.1016/j.ecoleng.2015.12.001

Cited by 31 publications

(14 citation statements)

References 33 publications

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“…Moreover, multivariate statistical analysis methods are widely adopted to identify the representative characteristics from numerous pieces of flow regime metrics and without losing metric information 29 . Some typical methods include Analysis of Similarity, principal component analysis, cluster analysis and set pair analysis 22 , 30 .…”

Section: Introductionmentioning

confidence: 99%

Annual shifts of flow regime alteration: new insights from the Chaishitan Reservoir in China

Zhang

Zhai

Zhao

2018

Sci Rep

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Reservoir regulation is variable for flow regime alterations and mainly depends on operational objectives and hydro-meteorological conditions. In this study, the flow regime metrics (i.e., magnitude, variability and frequency, duration, timing and rate of change) are adopted to describe variations in both long-term inflow and outflow series of the Chaishitan Reservoir in China. Deviations between the inflow and outflow metrics are calculated to assess the flow regime alterations at annual scale. Further, dimensions of both time and flow regimes are reduced by multivariate statistical analysis, and the regulation patterns and their annual shifts are identified. Results show that: four regulation patterns are identified from 2004 to 2015. The regulation is gradually enhanced over time with typical features of different hydrological years. In dry years, the pattern is slightly regulated flow regimes with slightly discharging stored water and flattening outflow, moderate stability and intermittency. In normal years, the pattern is slightly regulated flow regimes with extremely increasing flow magnitude in the pre-nonflood season, high stability and slight intermittency. In wet years, the pattern is moderately regulated flow regimes with moderately decreasing flow magnitude in the flood season but extremely increasing flow magnitude in the nonflood season, slight stability and high intermittency.

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Section: Introductionmentioning

confidence: 99%

Annual shifts of flow regime alteration: new insights from the Chaishitan Reservoir in China

Zhang

Zhai

Zhao

2018

Sci Rep

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“…Range of Variations method (RVA) was proposed by Richter et al [3] which has been widely used to obtain streamflow characteristics in natural and changed conditions [4][5][6][7] . However, there still remained uncertainty in providing suitable streamflow regime for restoring aquatic ecosystem.…”

Section: Introductionmentioning

confidence: 99%

Assessment of Streamflow Regime Alterations in Tang River, China

et al. 2019

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The biodiversity and integrity of river ecosystems are depending on the natural streamflow regime. Therefore, assessing alteration of hydrologic regimes becomes a fundamental step in river ecosystem protection and restoration. In this paper, the Range of Variability Approach (RVA) was used to analyze the alteration hydrologic regimes from 1959 to 2016 in the Tang River, the upstream of Baiyangdian Lake Basin, China. Several results can be drawn: (i) annual streamflow presented a decreasing trend, and an abrupt change was detected in 1979; (ii) the significant changed indicators of hydrologic variation in upstream of Baiyangdian Lake Basin were the monthly streamflow in March, April, August, November, time of 3-day and 90-day maximum streamflow, date of maximum streamflow occurrence, rise rate and number of reversals; and (iii) monthly water should be restored in flood and delivered in non-flood season, and annual extreme streamflow frequency and duration of high and low streamflow also should be regulated to maintain the streamflow regimes in the Tang River Basin, China. The results will help to provide the suitable ecological streamflow and maintain the integrity of river ecosystem in changing environment.

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“…The assessment of river hydrologic regime alteration by means of IHA method is conducted on the basis on daily flow series from the period before and after dam construction. The data obtained from the first gauge station located downstream the reservoir are used mainly [Richter et al 1996, Yu et al 2015.…”

Section: Introductionmentioning

confidence: 99%

The Impact of the Kowalskie Reservoir on the Hydrological Regime Alteration of the Główna River

et al. 2016

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This paper present an assessment of the impact of the Kowalskie reservoir on the hydrological regime alteration of the Główna river. The Główna river is a right tributary of the Warta river. The Kowalskie reservoir was built in 1984. The area of the reservoir in the normal condition is 203 ha and total capacity is 6.58×106 m 3. The impact of the Kowalskie reservoir on the hydrological regime was made on the basis of RVA method. The assessment was based on the analysis of flow series from the period of 1971-2012. The calculations were done by means of IHA software version 7.1.0.10 developed by The Nature Conservancy (2009). This study indicate that the Kowalskie reservoir has an impact on two group of flow parameters that characterized frequency and duration of high and low pulses as well as rate and frequency of water condition change. The others flow parameters characterized magnitude and duration of annual extreme water conditions are less affected by the Kowalskie reservoir. This study show that Kowalskie reservoir play important role in flood protection. Additionally the reservoir operation has an positive effect on minimum flows characteristic and base flow index.

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A revised range of variability approach for the comprehensive assessment of the alteration of flow regime

Cited by 31 publications

References 33 publications

Annual shifts of flow regime alteration: new insights from the Chaishitan Reservoir in China

Annual shifts of flow regime alteration: new insights from the Chaishitan Reservoir in China

Assessment of Streamflow Regime Alterations in Tang River, China

The Impact of the Kowalskie Reservoir on the Hydrological Regime Alteration of the Główna River

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