PairwiseIHA: A python toolkit to detect flow regime alterations for headwater rivers

The PairwiseIHA is an open-source toolkit written in Python that enables the user to quickly obtain the Indicators of Hydrologic Alteration (IHA) from inflow and outflow time series for headwater reservoirs. Specifically, the IHA metrics obtained from inflows (outflows) are considered as natural (re...

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Veröffentlicht in:Environmental modelling & software : with environment data news Jg. 154; S. 105427
Hauptverfasser: Chen, Zexin, Zhao, Tongtiegang, Tu, Tongbi, Tu, Xinjun, Chen, Xiaohong
Format: Journal Article
Sprache:Englisch
Veröffentlicht: Oxford Elsevier Ltd 01.08.2022
Elsevier Science Ltd
Schlagworte:
California
case studies
computer software
Flow regime
humans
Hydrology
Indicators of hydrologic alteration
Inflow
Natural inflow
Natural resources
Outflow
Range of variability approach
Regulated outflow
Reservoir operation
time series analysis
Toolkits
water
Water consumption
Water inflow
Water outflow
Water users
California
Regulated outflow
Flow regime
Natural inflow
Range of variability approach
Reservoir operation
Indicators of hydrologic alteration
ISSN:1364-8152, 1873-6726
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Zusammenfassung:The PairwiseIHA is an open-source toolkit written in Python that enables the user to quickly obtain the Indicators of Hydrologic Alteration (IHA) from inflow and outflow time series for headwater reservoirs. Specifically, the IHA metrics obtained from inflows (outflows) are considered as natural (regulated) and the differences are used to indicate how the magnitude, frequency, duration, timing and rate of change are altered by reservoir operation. It extends the functionality of the popular IHA software for analyzing concurrent inflows and outflows. The results of three case study reservoirs in California highlight that reservoir operation leads to considerable alterations in the five components of the flow regime. The findings on flow regime alteration are consistent across wet, normal and dry years. Overall, the PairwiseIHA can serve as an effective tool to investigate alterations in flow regime induced by human activities for water managers, scientists, natural resource agencies and water users. •The PairwiseIHA toolkit was developed to investigate the hydrological regime.•The toolkit illustrated the flow regime alterations subject to reservoir operation.•The toolkit was shown to be effective for three case study reservoirs in California.
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ISSN:1364-8152
1873-6726
DOI:10.1016/j.envsoft.2022.105427