Journal of Hydrology-Regional Studies最新文献

{"title":"Analysis of turbidity current plunging and floating woody debris in a reservoir during flood events","authors":"Fong-Zuo Lee ,&nbsp;Jihn-Sung Lai ,&nbsp;Sameh Ahmed Kantoush ,&nbsp;Tetsuya Sumi","doi":"10.1016/j.ejrh.2024.102027","DOIUrl":"10.1016/j.ejrh.2024.102027","url":null,"abstract":"<div><h3>Study region</h3><div>Many reservoirs worldwide experience the challenge of managing woody debris and determining the feasible location to set a floating barrier as a mitigation strategy to restrict their progression towards the dam. While the turbidity current plunges along the reservoir bed to form the underflow mud layer, the reverse current generated in the plunging flow region holds the woody debris.</div></div><div><h3>Study focus</h3><div>The present study attempts to define the plunging zone in correlation with the floating woody debris based on field observations, densimetric Froude number, plunging formula, and entrainment formula to investigate the plunge point location. When woody debris is carried by the sediment-laden inflow through the reservoir, the volume of woody debris needs to be estimated and extracted after the flood recession.</div></div><div><h3>New hydrological insight for the region</h3><div>According to the results of the analysis, the plunge point location was suggested as the critical condition of the densimetric Froude number for a floating barrier setup. Two proposed equations are presented to identify the turbidity current vertical profiles of velocity and sediment concentration. Considering hydrological conditions, the inflow peak sediment yield has added an optimal quantitative estimation of woody debris volumes than that by inflow peak discharge, total inflow sediment yield, maximum rainfall intensity, and total rainfall. The presented threshold values of hydrological patterns can serve as a critical warning indicator for the preparation of extraction operations for floating woody debris.</div></div>","PeriodicalId":48620,"journal":{"name":"Journal of Hydrology-Regional Studies","volume":"56 ","pages":"Article 102027"},"PeriodicalIF":4.7,"publicationDate":"2024-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142659734","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Seasonal and diurnal variations in turbidity in midwestern freshwater streams","authors":"Galina Shinkareva ,&nbsp;Catherine M. O’Reilly ,&nbsp;William L. Perry","doi":"10.1016/j.ejrh.2024.102044","DOIUrl":"10.1016/j.ejrh.2024.102044","url":null,"abstract":"<div><h3>Study region</h3><div>Midwestern United States.</div></div><div><h3>Study focus</h3><div>Turbidity is a commonly used metric of water quality in streams and can be influenced by many factors. The objective of this study was to explore how turbidity changes on short, daily, timescales.</div></div><div><h3>New hydrological insights for the region</h3><div>Turbidity was measured at 15-minute intervals over a seven-year period in two watersheds in central Illinois. We documented diurnal turbidity cycles that were consistent and independent of discharge. Maximum daily levels occurred between 23:00 and 05:00, and minimum values occurred between 13:00 and 18:00, with night-time turbidity averaging 2.3 times higher than day-time turbidity values. The diurnal magnitude of turbidity change for Money and Six Mile Creeks tended to be significantly greater during June, July, August and September relative to other periods of the year. These months coincide with water temperatures above 10°C which suggests a potentially important role of biological activity as a main driver of diurnal turbidity changes. During this warm-water season, the diurnal turbidity magnitude also corresponded with the lunar cycles. Median nighttime turbidity values for warm months during lunar phases with lowest moonlight levels (new moon, waxing and waning crescent) were typically higher than during the phases with highest moonlight availability (full moon, waxing and waning gibbous), which may be related to nocturnal foraging and mating activities of fish, amphibians and bivalve species that inhabit both streams.</div></div>","PeriodicalId":48620,"journal":{"name":"Journal of Hydrology-Regional Studies","volume":"56 ","pages":"Article 102044"},"PeriodicalIF":4.7,"publicationDate":"2024-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142659822","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Conceptual groundwater model of the north-eastern flanks of Mount Kenya","authors":"Manon Trottet ,&nbsp;Hanspeter Liniger ,&nbsp;Daniel Hunkeler ,&nbsp;Philip Brunner","doi":"10.1016/j.ejrh.2024.101989","DOIUrl":"10.1016/j.ejrh.2024.101989","url":null,"abstract":"<div><div>Despite serious concerns over declining river flows and prolonged dry spells in the north-eastern region of Mount Kenya and the Ewaso Ng’iro River watershed many aspects of the groundwater system remain unexplored. In particular, the recharge-discharge dynamics of the Ewaso Ng’iro River have not been studied, and no conceptual groundwater model currently links the recharge areas in the high-elevation humid regions to the drier lowlands. This study aims to address this significant knowledge gap by assessing the recharge-discharge dynamics of the Ewaso Ng’iro River and identifying the relevant groundwater subsystems and the main flow paths within the various lava layers constituting the aquifer system. Hydrochemical and stable isotope analyses revealed three distinct subsystems with slightly different chemistries and different recharge zones, all of recent meteoric origin. Groundwater from Mt. Kenya is of the HCO₃-Na-Mg-Ca type with no dominant cations, whereas groundwater from the Nyambene Range, the other surrounding volcanic hills in the area, is of the HCO₃-Na type. Groundwater in the third subsystem in between is of the HCO₃-Mg type and is confined or semi-confined. In this area, carbon-13 analysis showed a strong influence of mantle-derived CO₂ on the groundwater chemistry (very high electrical conductivity and left-shifted oxygen-18 ratios). Finally, major ions and stable isotopes (ẟ¹⁸O and ẟ²H) confirmed that during the dry season, the river is entirely groundwater-fed, with the Mt. Kenya subsystem contributing half of the maximum river flow rate of 800 l/s.</div></div>","PeriodicalId":48620,"journal":{"name":"Journal of Hydrology-Regional Studies","volume":"56 ","pages":"Article 101989"},"PeriodicalIF":4.7,"publicationDate":"2024-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142659761","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Potential impact of precipitation temporal structure on meteorological drought and vegetation condition: A case study on Qinghai-Tibet Plateau","authors":"Houliang Lu ,&nbsp;Jun Qiu ,&nbsp;Bill X. Hu ,&nbsp;Fangfang Li","doi":"10.1016/j.ejrh.2024.102048","DOIUrl":"10.1016/j.ejrh.2024.102048","url":null,"abstract":"<div><h3>Study region</h3><div>Qinghai-Tibet Plateau (QTP).</div></div><div><h3>Study focus</h3><div>The Qinghai-Tibet Plateau (QTP) is sensitive to climate change and ecologically fragile. Researches on precipitation over the QTP mainly focus on quantity and frequency, overlooking its temporal distribution. However, subtle changes in precipitation can significantly impact the natural environment and lead to natural disasters. This work primarily focuses on the response of meteorological drought and vegetation growth to the precipitation temporal structure. The precipitation temporal structure is quantified from the perspectives of the contribution of heavy precipitation (concentration index, CI) and the temporal distribution of total precipitation (standardized variability index, SVI) using CPC unified gauge-based analysis of global daily precipitation over 1982–2022.</div></div><div><h3>New hydrological insights for the regions</h3><div>The CI and SVI exhibit a significant decreasing trend across almost the entire QTP, which means the temporal distribution of precipitation has become more \"even\" within a year. Meteorological drought was analyzed using the sc-PDSI and SPEI-12 indices. Both indices indicate that drought has intensified in both the humid regions (southeastern QTP) and arid regions (northern QTP). However, in the transition zone between dry and humid areas, drought conditions have shown signs of alleviation. Analysis of the vegetation indicates a greening trend across the QTP, particularly in the northeastern regions. CI is more superior than the SVI in characterizing vegetation growth, especially in the transitional zones between bare land and grassland where precipitation is sparse. The findings provide a scientific basis for vegetation restoration and drought risk management on the QTP.</div></div>","PeriodicalId":48620,"journal":{"name":"Journal of Hydrology-Regional Studies","volume":"56 ","pages":"Article 102048"},"PeriodicalIF":4.7,"publicationDate":"2024-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142659858","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"An agent-based socio-hydrological modeling to identify the feedbacks between agricultural irrigation and ecological water conveyance tradeoffs in Hotan River basin","authors":"Shunke Wang ,&nbsp;Jie Xue ,&nbsp;Jingjing Chang ,&nbsp;Huaiwei Sun ,&nbsp;Xinxin Li ,&nbsp;Xin Liu","doi":"10.1016/j.ejrh.2024.102028","DOIUrl":"10.1016/j.ejrh.2024.102028","url":null,"abstract":"<div><h3>Study region</h3><div>Hotan River basin in Northwest China</div></div><div><h3>Study focus</h3><div>The conflict between agricultural irrigation and ecological water conveyance is particularly critical in arid inland river basins. Water resource systems involve multiple stakeholders and sectors, complicating the identification of dynamic feedback between agriculture and ecology. This study presents an agent-based socio-hydrological modeling (ABSHM) framework to address these interactions.</div></div><div><h3>New hydrological insights for the region</h3><div>Feedback is quantified using dynamic state variable of oasis decision-making sensitivity in the Hotan River basin. When this sensitivity ranges from 0.03 to 0.06, water managers prioritize agricultural irrigation, increasing its usage from 8 to 47 million m³ at the expense of ecological water. Conversely, when sensitivity is from 0.015 to 0.03, ecological health requires increasing ecological water use from 27 to 66 million m³ by reducing irrigation. The ABSHM framework effectively captures these dynamic feedback processes, supporting basin water resources management and decision-making. The uniqueness of the ABSHM framework lies in its ability to capture the impact of individual decision-making behaviors on the overall water resource system. This offers new perspectives and approaches for addressing current and future water resource management challenges.</div></div>","PeriodicalId":48620,"journal":{"name":"Journal of Hydrology-Regional Studies","volume":"56 ","pages":"Article 102028"},"PeriodicalIF":4.7,"publicationDate":"2024-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142659819","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Regional-scale seasonal forecast of surface water availability in a semi-arid environment: The case of Ceará State in Northeast of Brazil","authors":"Erwin Rottler ,&nbsp;Martin Schüttig ,&nbsp;Axel Bronstert ,&nbsp;Alyson Brayner Sousa Estácio ,&nbsp;Renan Vieira Rocha ,&nbsp;Valdenor Nilo de Carvalho Junior ,&nbsp;Clecia Cristina Barbosa Guimarães ,&nbsp;Eduardo Sávio P.R. Martins ,&nbsp;Christof Lorenz ,&nbsp;Klaus Vormoor","doi":"10.1016/j.ejrh.2024.102058","DOIUrl":"10.1016/j.ejrh.2024.102058","url":null,"abstract":"<div><h3>Study region:</h3><div>Ceará (Brazil).</div></div><div><h3>Study focus:</h3><div>Considerable intra- and inter-annual variability of rainfall in this semi-arid region lead to strong temporal variations in water availability. To store and supply water in times of water scarcity, tens of thousands of freshwater reservoirs have been built over time, most of which are unmonitored. Here, we develop a hydrological forecasting system for the entire state of Ceará which integrates satellite-based monitoring of reservoir water storage, bias-corrected seasonal weather forecasts and hydrological modeling of freshwater availability. We test and demonstrate the applicability of this system by conducting experiments with historic data, hindcasts and forecasts.</div></div><div><h3>New hydrological insights for the region:</h3><div>The assimilation of in-situ and Sentinel-1 based observations of reservoir fillings into the hydrological model WASA-SED proved to be feasible and an important step in the modeling of available water resources dynamics. Hydrological simulations for January to June from 1990–2019 based on meteorological observations resulted in a median average NRMSE between observed and modeled reservoir fillings of strategic reservoirs of 29.51%. The comparison of observed and predicted precipitation from two different seasonal forecasting systems were in the same order of magnitude (i.e. 19.51% and 24.52%). Hindcast experiments suggested the superposition of uncertainties of different model components. Efforts are currently being made to further test and improve the developed integrated framework as part of the operational service.</div></div>","PeriodicalId":48620,"journal":{"name":"Journal of Hydrology-Regional Studies","volume":"56 ","pages":"Article 102058"},"PeriodicalIF":4.7,"publicationDate":"2024-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142659820","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A novel structural equation modelling-based framework for identifying hydrometeorological multi-factor interaction","authors":"Zhongan Li ,&nbsp;Xian Guan ,&nbsp;Xizhi Nong ,&nbsp;Ronghui Li ,&nbsp;Lihua Chen ,&nbsp;Jiahua Wei","doi":"10.1016/j.ejrh.2024.102050","DOIUrl":"10.1016/j.ejrh.2024.102050","url":null,"abstract":"<div><h3>Study region</h3><div>The Hanjiang River Basin, China.</div></div><div><h3>Study focus</h3><div>In this study, we proposed a new integrated framework based on structural equation models to identify hydrometeorological multi-factor interaction relationship. The spatiotemporal distribution and interaction relationship of hydrological, meteorological, and vegetation indicators in the Hanjiang River Basin were analyzed based on the national long-series monitoring data.</div></div><div><h3>New hydrological insights for the region</h3><div>The findings reveal that: (1) The rainfall is the maximum in the lower reaches (968.87 mm), and the runoff depth fluctuated the most in the lower reaches (1181.70 mm to 2934.88 mm). (2) Dew point temperature is an important influencing factor of rainfall in the upper and middle reaches, and relative humidity is an important influencing factor of rainfall in the lower reaches. High vegetation cover is an important influencing factor for runoff depth. (3) Rainfall and runoff depth are significantly negatively affected by meteorological characteristics, with effect values ranging from −0.24 to −0.68. However, runoff depth is positively affected by rainfall, relative humidity, vegetation characteristics, and canopy interception, with effect values ranging from 0.02 to 0.58. The size and mode of influence have significant regional differences.</div></div>","PeriodicalId":48620,"journal":{"name":"Journal of Hydrology-Regional Studies","volume":"56 ","pages":"Article 102050"},"PeriodicalIF":4.7,"publicationDate":"2024-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142659859","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Risk assessment and sources associated with potentially toxic elements in suspended particulate matter: A karst river perspective in active mining area","authors":"Yeye Ren ,&nbsp;Y.Jun Xu ,&nbsp;Pan Wu ,&nbsp;Jie Zeng ,&nbsp;Changmei Yao ,&nbsp;Guangxi Long ,&nbsp;Xingxing Cao","doi":"10.1016/j.ejrh.2024.102052","DOIUrl":"10.1016/j.ejrh.2024.102052","url":null,"abstract":"<div><h3>Study region</h3><div>Daiyang River Basin, a typical karst river basin impacted by mining activities in Guizhou, Southwest China.</div></div><div><h3>Study focus</h3><div>Rivers are fundamental components of regional water security, but they are facing potentially toxic elements (PTEs) pollution caused by mining activities. This study investigated the concentration, behavior, risks and sources of nine PTEs in suspended particulate matter (SPM) from mining-impacted karst rivers, which are essential for the safety and management of karst water environments.</div></div><div><h3>New hydrological insights for the region</h3><div>The contents of Cr, Ni, Cu, Zn, As, Cd, Sb and Hg exceeded the corresponding local soil background values, with Zn and Cu being the most important pollutants. These elements caused a very high potential toxicity risk to the basin and unacceptable carcinogenic and non-carcinogenic risks to the local residents. Correlation analysis and the positive matrix factorization (PMF) model indicated that Ni, Cd, Zn and Cu were mainly derived from mixed sources of geological background and anthropogenic activities (30.95 %), Hg, Sb, and As were related to coal mining and combustion sources (28.91 %), while Pb, As, Cr and Sb were mainly contributed by natural sources (40.15 %). Furthermore, mixed sources, mining-related sources and As were identified as priority control factors in the study area. These insights can provide powerful support for decision-makers to develop control policies and reduce PTEs pollution in karst areas.</div></div>","PeriodicalId":48620,"journal":{"name":"Journal of Hydrology-Regional Studies","volume":"56 ","pages":"Article 102052"},"PeriodicalIF":4.7,"publicationDate":"2024-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142659860","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Geochemical fingerprints, evolution, and driving forces of groundwater in an alpine basin on Tibetan Plateau: Insights from unsupervised machine learning and objective weight allocation approaches","authors":"Hongjie Yang ,&nbsp;Yong Xiao ,&nbsp;Shaokang Yang ,&nbsp;Zhen Zhao ,&nbsp;Shengbin Wang ,&nbsp;Shanhu Xiao ,&nbsp;Jie Wang ,&nbsp;Yuqing Zhang ,&nbsp;Jianhui Wang ,&nbsp;Youjin Yuan ,&nbsp;Ning Wang ,&nbsp;Liwei Wang ,&nbsp;Wenxu Hu","doi":"10.1016/j.ejrh.2024.102054","DOIUrl":"10.1016/j.ejrh.2024.102054","url":null,"abstract":"<div><h3>Study Region</h3><div>Tongde Basin, a typical alpine basin on the northeastern Tibetan Plateau</div></div><div><h3>Study focus</h3><div>Research on the hydrochemical pattern and availability of groundwater is very limited in alpine regions, which greatly hinders the rational ulitilization and scientific management of groundwater resources. Multiple approaches integrating self-organizing map, K-means, entropy weight were employed to elucidate the distinct hydrochemical evolution patterns and controlling mechanisms of groundwater in alpine basins with dense human activities.</div></div><div><h3>New hydrological insights for the region</h3><div>Multiple hydrochemical evolution patterns were discovered for groundwater in present alpine basin on northeastern Tibetan Plateau. Groundwater presents a gradual hydrochemical evolution from the piedmont to the riverside under the natural regulation with the increasing of TDS and major ions along the flow path. While, groundwater at some sporadic sites is featured with relatively high total alkalinity due to carbonate mineral dissolution. The riverine groundwaters are regulated by the strong hydrodynamic condition of river and demonstrate fresher hydrochemical characteristics. Groundwaters in the irrigation areas are featured by elevated nitrate levels with a maximum of 42.86 mg/L, attributed to agricultural pollution inputs. A conceptual model was established to illustrate the distinct hydrochemical fingerprints, evolution patterns and controlling mechanisms of groundwater in alpine basins that with dense human activities. This research can enhance the understanding of groundwater chemical status, genesis and availability, and is beneficial for the conservation and sustainable management of groundwater resources in ecologically fragile alpine regions worldwide.</div></div>","PeriodicalId":48620,"journal":{"name":"Journal of Hydrology-Regional Studies","volume":"56 ","pages":"Article 102054"},"PeriodicalIF":4.7,"publicationDate":"2024-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142586306","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Identifying the pattern of shallow groundwater hydrochemistry and its driving factors in a typical estuarine delta of Poyang Lake watershed, China: Insights into water quality assessment","authors":"Hongxiang Fan ,&nbsp;Fan Song ,&nbsp;Huawu Wu ,&nbsp;Yao Du ,&nbsp;Ruiyu Lei ,&nbsp;Mengyao Ding ,&nbsp;Kaiwen Li ,&nbsp;Jing Li ,&nbsp;Congsheng Fu","doi":"10.1016/j.ejrh.2024.102049","DOIUrl":"10.1016/j.ejrh.2024.102049","url":null,"abstract":"<div><h3>Study region</h3><div>A typical estuarine delta of Gan−Xiu River within Poyang Lake watershed, situated in the north of Jiangxi Province, China</div></div><div><h3>Study focus</h3><div>Although groundwater is considered as a crucial water resource for social development and public health, it presents significant challenges in preventing the deterioration of groundwater quality in the seasonal floodplain regions. Hence, this study focuses on the spatiotemporal variations of ionic concentrations of shallow groundwater in an estuarine delta of Gan-Xiu River in Poyang Lake watershed, which is greatly complicated by complex hydrological regimes and intensive anthropogenic activities such as cropland fertilizer. The potential factors controlling the ionic concentrations were identified using self-organizing map clustering and Piper diagram approaches. Moreover, the overall water quality of shallow groundwater was assessed according to the ionic compositions.</div></div><div><h3>New hydrological insights for the region</h3><div>(1) Shallow groundwater chemistry was influenced by weathering silicate and carbonate from ionic and Gibbs plots, which is highly associated with the distribution of the carbonate rock fissure-karst aquifer in the study region. (2) The contribution of groundwater to river water varied from 53.2 % to 71.5 % via isotopic analysis, suggesting that groundwater dominate the component of river water. (3) Most samples from cluster types are suitable for drinking and irrigation use except for sites from Cluster 6, which were characterized by the higher concentrations of Cl⁻, NO₃⁻ and SO₄²⁻.</div></div>","PeriodicalId":48620,"journal":{"name":"Journal of Hydrology-Regional Studies","volume":"56 ","pages":"Article 102049"},"PeriodicalIF":4.7,"publicationDate":"2024-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142586305","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}