Results 31 to 40 of about 346,878 (169)

Decreased levels and ecological risks of disinfection by-product chloroform in a field-scale artificial groundwater recharge project by colloid supplement

open access: yesEnvironment International, 2022
To bolster freshwater supply, artificial groundwater recharge with recycled water has increasingly attracted research attentions and interests. However, artificial groundwater recharge has potential risks to groundwater quality, as recharge water ...
Juanfen Chai   +6 more
doaj  

Estimation of groundwater recharge response from rainfall events in a semi-arid fractured aquifer: Case study of quaternary catchment A91H, Limpopo Province, South Africa

open access: yesCogent Engineering, 2019
This study estimated groundwater recharge response from rainfall events in a semi-arid fractured aquifer. This is crucial as recharge response has an influence on available groundwater in an aquifer.
P. Nemaxwi, J.O. Odiyo, R. Makungo
doaj   +1 more source

Bridging the data gap: using remote sensing and open-access data for assessing sustainable groundwater use in Kumasi, Ghana

open access: yesJournal of Water and Climate Change, 2023
Groundwater use has significantly increased in the rapidly urbanising city of Kumasi, Ghana. But there is a lack of understanding of whether the groundwater system can sustain the growing demand in the future amidst climate change and rapid urbanisation.
Estela Fernandes Potter   +2 more
doaj   +1 more source

Effect of Groundwater Age and Recharge Source on Nitrate Concentrations in Domestic Wells in the San Joaquin Valley.

open access: yesEnvironmental Science and Technology, 2021
Nitrate is one of the most abundant contaminants in groundwater globally, in the United States, and in California (CA). We studied well construction information, water chemistry, stable isotopes, and noble gases to understand how groundwater travel time ...
G. Castaldo   +3 more
semanticscholar   +1 more source

Combining the Morris Method and Multiple Error Metrics to Assess Aquifer Characteristics and Recharge in the Lower Ticino Basin, in Italy [PDF]

open access: yesarXiv, 2022
Groundwater flow model accuracy is often limited by the uncertainty in model parameters that characterize aquifer properties and aquifer recharge. Aquifer properties such as hydraulic conductivity can have an uncertainty spanning orders of magnitude. Meanwhile, parameters used to configure model boundary conditions can introduce additional uncertainty.
arxiv  

Groundwater age, life expectancy and transit time distributions in advective-dispersive systems: 1. Generalized reservoir theory [PDF]

open access: yesAdvances in Water Resources 29 (2006) 1267-1291, 2011
We present a methodology for determining reservoir groundwater age and transit time probability distributions in a deterministic manner, considering advective-dispersive transport in steady velocity fields. In a first step, we propose to model the statistical distribution of groundwater age at aquifer scale by means of the classical advection ...
arxiv   +1 more source

Impacts of climate change on Swiss alluvial aquifers – A quantitative forecast focused on natural and artificial groundwater recharge by surface water infiltration

open access: yesJournal of Hydrology X, 2022
The sensitivity of future groundwater recharge and temperature development was investigated for three alluvial aquifers in the urban agglomeration of the city of Basel, Switzerland. For selected climate projections groundwater recharge and the associated
Jannis Epting   +4 more
doaj  

Mapping groundwater recharge potential zone using a GIS approach in Hualian River, Taiwan

open access: yesSustainable Environment Research, 2016
Hualian River is abundant in runoff and high in sediment transport capacity. Most surface water is utilized for agricultural purposes, whereas domestic and industrial water usage relies on the copious amount of available groundwater.
Hsin-Fu Yeh   +3 more
doaj   +1 more source

Assessing the role of groundwater recharge from tanks in crystalline bedrock aquifers in Karnataka, India, using hydrochemical tracers

open access: yesJournal of Hydrology X, 2022
The majority of India’s rural drinking water supply is sourced from groundwater, which also plays a critical role in irrigated agriculture, supporting the livelihoods of millions of users. However, recent high abstractions are threatening the sustainable
Bentje Brauns   +8 more
doaj  

Predicting Playa Inundation Using a Long Short-Term Memory Neural Network [PDF]

open access: yes, 2020
In the Great Plains, playas are critical wetland habitats for migratory birds and a source of recharge for the agriculturally-important High Plains aquifer. The temporary wetlands exhibit complex hydrology, filling rapidly via local rain storms and then drying through evaporation and groundwater infiltration.
arxiv   +1 more source

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