Results 61 to 70 of about 346,878 (169)

Machine learning surrogates for efficient hydrologic modeling: Insights from stochastic simulations of managed aquifer recharge [PDF]

open access: yesJournal of Hydrology (2025), vol. 652, pp. 132606
Process-based hydrologic models are invaluable tools for understanding the terrestrial water cycle and addressing modern water resources problems. However, many hydrologic models are computationally expensive and, depending on the resolution and scale, simulations can take on the order of hours to days to complete.
arxiv   +1 more source

Gradual Variation Analysis for Groundwater Flow [PDF]

open access: yesarXiv, 2010
Groundwater flow in Washington DC greatly influences the surface water quality in urban areas. The current methods of flow estimation, based on Darcy's Law and the groundwater flow equation, can be described by the diffusion equation (the transient flow) and the Laplace equation (the steady-state flow).
arxiv  

Determining Regional-Scale Groundwater Recharge with GRACE and GLDAS

open access: yesRemote Sensing, 2019
Groundwater recharge (GR) is a key component of regional and global water cycles and is a critical flux for water resource management. However, recharge estimates are difficult to obtain at regional scales due to the lack of an accurate measurement ...
Qifan Wu, B. Si, Hailong He, Pute Wu
semanticscholar   +1 more source

Spatial and temporal recharge estimation of the basement complex in Nigeria, West Africa

open access: yesJournal of Hydrology: Regional Studies, 2020
Study region: Osun Drainage Basin, Nigeria. Study focus: Estimating spatial and temporal patterns of recharge is important for sustainable groundwater resources management.
Eniola Damilola Ashaolu   +4 more
doaj  

An underground drip water monitoring network to characterize rainfall recharge of groundwater at different geologies, environments, and climates across Australia [PDF]

open access: yesGeoscientific Instrumentation, Methods and Data Systems
Understanding when and why groundwater recharge occurs is of fundamental importance for the sustainable use of this essential freshwater resource for humans and ecosystems.
A. Baker   +5 more
doaj   +1 more source

Assessment of Groundwater Recharge Using WetSpass-M and MODFLOW Coupling in Jedeb Watershed, Upper Blue Nile Basin, Ethiopia

open access: yesAir, Soil and Water Research
Currently, the demand for water is rising, and as a result, the groundwater is declining. Water supplies are not sufficient for agricultural productivity, environmental preservation, or ecosystem services, resulting in an unbalanced water budget in the ...
Tade Mule Asrade   +3 more
doaj   +1 more source

Estimating natural groundwater recharge taking into consideration temporal and spatial variability for arid unconfined aquifer

open access: yesWater Science
Water scarcity is one of the major critical affecting arid climate countries. In addition, population growth and climate change are threatening the sustainable development of water resources in the upcoming decades.
Karim Mohamed Ahmed Soliman   +3 more
doaj   +1 more source

Geochemistry constrains global hydrology on Early Mars [PDF]

open access: yes, 2019
Ancient hydrology is recorded by sedimentary rocks on Mars. The most voluminous sedimentary rocks that formed during Mars' Hesperian period are sulfate-rich rocks, explored by the $Opportunity$ rover from 2004-2012 and soon to be investigated by the $Curiosity$ rover at Gale crater.
arxiv   +1 more source

Establishment of earth tides effect on water level fluctuations in an unconfined hard rock aquifer using spectral analysis [PDF]

open access: yesCurrent Science 83, 1 (2002) 101-104, 2010
Short-interval water level measurements using automatic water level recorder in a deep well in an unconfined crystalline rock aquifer at the campus of NGRI, near Hyderabad shows a cyclic fluctuation in the water levels. The observed values clearly show the principal trend due to rainfall recharge.
arxiv  

Groundwater Recharge Potential for Sustainable Water Use in Urban Areas of the Jequitiba River Basin, Brazil

open access: yesSustainability, 2019
The zoning of groundwater recharge potential would be attractive for water managers, but is lacking in many regions around the planet, including in the Jequitiba River basin, Minas Gerais, Brazil.
Adriana da Costa   +3 more
semanticscholar   +1 more source

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