Groundwater and surface-water interaction refers to the bidirectional exchange of water, solutes, heat, and sometimes contaminants between aquifers and surface-water bodies such as rivers, lakes, wetlands, and estuaries. This interaction is governed by hydraulic gradients, permeability contrasts, geological heterogeneities, and temporal variability in recharge and evapotranspiration. It encompasses processes such as baseflow discharge, bank storage, hyporheic exchange, and infiltration from surface water to aquifers, which together control streamflow regimes, water quality, redox conditions, and ecological habitat. Quantifying these exchanges is critical in hydrologic modeling, water-budget analysis, contaminant transport studies, and integrated water-resources management under changing climatic and anthropogenic stresses.
Groundwater input to coral reefs directly affects water chemistry and triggers a cascade of changes in the coastal ecosystem, according to a new study led by University of Hawaiʻi (UH) at Mānoa oceanographers. Freshwater ...
Ecology
Jun 27, 2025
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Water is at the heart of agriculture. Every stage of the food-growing process depends on having reliable access to water. However, water levels are declining in many rivers and aquifers that function as key resources for ...
Ecology
Jun 27, 2025
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48
Driving along the Stuart Highway from Tennant Creek to Katherine in Australia's Northern Territory, you might be more aware of lone eagles flying high above than what lies in the groundwaters beneath.
Ecology
Jun 19, 2025
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The water beneath our feet that we use to bathe, drink and water crops is vanishing faster than ever in the Colorado River Basin, according to a new study.
Environment
Jun 16, 2025
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The American Academy of Microbiology, the honorific leadership group and think tank within the American Society for Microbiology (ASM), and the American Geophysical Union (AGU) have released a new report, Water, Waterborne ...
Environment
Jun 9, 2025
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As the Colorado River's giant reservoirs have declined during the last two decades, even larger amounts of water have been pumped and drained from underground, according to new research based on data from NASA satellites.
Earth Sciences
May 28, 2025
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137
Growing communities and extensive agriculture throughout the Western United States rely on meltwater that spills out of snow-capped mountains every spring. The models for predicting the amount of this streamflow available ...
Earth Sciences
May 5, 2025
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119
Indian Institute of Technology Gandhinagar-led research suggests climate change, increased monsoon rainfall and expanded groundwater pumping have driven substantial vegetation growth in the Thar Desert over the past two decades.
Scientists know that streams and rivers can contribute significant quantities of greenhouse gases to the atmosphere. One way these bodies of water come to contain greenhouse gases is via groundwater, which picks up carbon ...
Earth Sciences
Mar 31, 2025
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34
Someone is listening very carefully for the quiet sound of a drip from deep underground.
Environment
Mar 18, 2025
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132
