Discussion of “Impacts of Streamflow and Topographic Changes on Water Level during the Dry Season of Poyang Lake, China” by Feng Huang, Xunzhou Chunyu, Yuankun Wang, Xiao Zhang, Bao Qian, Dayong Zhao, and Ziqiang Xia

Ashofteh, Parisa‐Sadat

doi:10.1061/(asce)he.1943-5584.0002053

Cited by 1 publication

(1 citation statement)

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“…However, they require a long and continuous data record and specific statistical assumptions on the data used and are unable to distinguish between correlation and causation (Slater et al, 2021). The second group relies on modelling experiments to quantitatively assess the effects of different drivers on streamflow using a variety of physically‐based models such as the Soil and Water Assessment Tool (Bieger, Hörmann, & Fohrer, 2014; Nauman, Zulkafli, Bin Ghazali, & Yusuf, 2019), MIKE (Ramteke, Singh, & Chatterjee, 2020), variable infiltration capacity (VIC; Wang, Shi, Chen, & Li, 2019) and the topography based hydrological model (Ashofteh, 2021). By comparing the flow regime metrics before and after the construction of the dams, the effects of these dams can be quantitatively attributed.…”

Section: Introductionmentioning

confidence: 99%

Assessment of upbasin dam impacts on streamflow at Chiang Saen gauging station during the period 1960–2020 in the context of statistical studies

Nguyen

Hoang

et al. 2022

River Research & Apps

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The Langcang‐Mekong River Basin is the most important transboundary river basin in Asia. However, over the recent decades, dam construction has had increasingly profound effects on hydrological processes and aquatic, particularly riparian, ecosystems. Understanding these impacts is critical for the foundation of sustainable runoff surface management. In this study, different methods, based on both graphical and statistical techniques, were applied to assess the effects of the dams on annual, seasonal and monthly runoff and to detect hydroclimatic trends in the Upper Mekong Basin during the period 1960–2020. The results reveal two change points with respect to seasonal and annual flow regimes; that is, 2003 for the flood season and annual flows and 2013 for the dry season flow. The duration of the flood season and the volume of annual discharges have both significantly decreased since 2003 and the dry season discharge has significantly increased since 2013 (with both p‐values <.05). The quantitative assessment suggests that, due to the effect of dams, the monthly discharges increased by 10–450 m3/s during the dry season (December–May), while the flood season's monthly flows decreased significantly, by 1,028–2,150 m3/s, from July to October at Chiang Saen station. The study of hydrological changes in the Mekong watershed is expected to be a significant contribution towards a better understanding of large watersheds in which the hydrological effects are influenced not only by climate change at large spatial and temporal scales but also by changes in the physical environment due to the construction of dams.

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