A novel approach to analyze the impact of groundwater drought on the perennial environment and hyporheic zone of surface water bodies

IF 5.9 1区地球科学 Q1 ENGINEERING, CIVIL

Journal of Hydrology Pub Date : 2025-01-04 DOI:10.1016/j.jhydrol.2025.132668

Thallam Prashanth, Sayantan Ganguly, Gummadi Manoj, Dharmaraj Teppala

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引用次数: 0

Abstract

Surface water bodies provide essential sources of fresh water for drinking, agriculture and industrial purposes. The hyporheic zone beneath and around surface water bodies plays a crucial role in maintaining the health and functionality of aquatic ecosystems. In recent times, surface water bodies have been observed to dry up rapidly in many parts of the globe due to groundwater drought. Hence, examining the sustenance of the surface water bodies over time is essential, which includes examining whether they are in a gaining or losing state and acting as perennial or non-perennial. In this context, this research aimed to analyze the behavioural changes in surface water bodies due to groundwater drought and stream-aquifer interaction in the Godavari Basin, India. This study proposes a new index called the Potential Stream-Aquifer Interaction Index (PSAII) or the Potential River Perenniality Index (PRPI) to define the nature of surface water bodies. This study employs satellite-derived bathymetry to determine water depth in ungauged lakes and Standardized Ground Water Table Index (SGWTI) to ascertain the magnitude of groundwater drought. The influence of groundwater drought on surface water bodies is determined based on the correlation of the head difference between groundwater table (GWT) and water surface elevation, as well as the SGWTI. The analysis reveals that PRPI for the upper Godavari River ranges from 0 to −0.4, and the lower Godavari River lies between 2.03 and 2.04 from 2009 to 2018, validated by the flow duration curves. The correlation between head difference and SGWTI lies between 0.8 and 0.9 for the upper Godavari and 0.08 to 0.48 for the lower Godavari River. The results imply that the upper Godavari river basin has become non-perennial due to groundwater drought. Based on the correlation analysis, it is also found that several ungauged lakes in the vicinity of the upper Godavari River are highly influenced by groundwater drought.

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地下水干旱对地表水常年环境和潜流带影响分析的新方法

地表水体为饮用、农业和工业提供了重要的淡水来源。地表水体下方和周围的潜流带对维持水生生态系统的健康和功能起着至关重要的作用。近年来，由于地下水干旱，在全球许多地区观测到地表水体迅速干涸。因此，随着时间的推移，检查地表水体的维持是必要的，包括检查它们是处于增加还是减少的状态，是多年生还是非多年生。在此背景下，本研究旨在分析印度Godavari盆地地下水干旱和河流-含水层相互作用导致的地表水体行为变化。本研究提出了一个新的指标，称为潜在河流-含水层相互作用指数（PSAII）或潜在河流多年性指数（PRPI）来定义地表水体的性质。本研究采用卫星水深测量来确定未测量湖泊的水深，并使用标准化地下水位指数（SGWTI）来确定地下水干旱的程度。地下水干旱对地表水的影响是基于地下水位与水面高程的水头差以及SGWTI的相关性来确定的。分析结果表明，2009 - 2018年戈达瓦里河上游的PRPI为0 ~−0.4，下游的PRPI为2.03 ~ 2.04。高达瓦里河上游水头差与SGWTI的相关系数为0.8 ~ 0.9，下游为0.08 ~ 0.48。结果表明，由于地下水干旱，上哥达瓦里河流域已变成非多年生。基于相关分析，还发现戈达瓦里河上游附近的几个未测量湖泊受地下水干旱的影响较大。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Hydrology 地学-地球科学综合

CiteScore

11.00

自引率

12.50%

发文量

1309

审稿时长

7.5 months

期刊介绍： The Journal of Hydrology publishes original research papers and comprehensive reviews in all the subfields of the hydrological sciences including water based management and policy issues that impact on economics and society. These comprise, but are not limited to the physical, chemical, biogeochemical, stochastic and systems aspects of surface and groundwater hydrology, hydrometeorology and hydrogeology. Relevant topics incorporating the insights and methodologies of disciplines such as climatology, water resource systems, hydraulics, agrohydrology, geomorphology, soil science, instrumentation and remote sensing, civil and environmental engineering are included. Social science perspectives on hydrological problems such as resource and ecological economics, environmental sociology, psychology and behavioural science, management and policy analysis are also invited. Multi-and interdisciplinary analyses of hydrological problems are within scope. The science published in the Journal of Hydrology is relevant to catchment scales rather than exclusively to a local scale or site.