[1] Natural free convection is a process of great importance in disciplines from hydrology to meteorology, oceanography, planetary sciences, and economic geology, and for applications in carbon sequestration and nuclear waste disposal. It has been studied for over a century – but almost exclusively in theoretical and laboratory settings. Despite its importance, conclusive primary evidence of fr...

A study using multiple techniques provided insight into tectonic influences on ground water systems; the results can help to understand ground water systems in the tectonically active western United States and other parts of the world. Ground water in the San Bernardino Valley (Arizona, United States and Sonora, Mexico) is the main source of water for domestic use, cattle ranching (the primary ...

First posted March 14, 2023 For additional information, contact: Director, Central Midwest Water Science CenterU.S. Geological Survey405 North Goodwin Urbana, IL 61801Contact Pubs Warehouse Des Moines Works (DMWW) is one of the largest water providers in Iowa and as population growth continues, demand for drinking increasing. DMWW uses groundwater surface raw sources to supply City surrounding ...

Ground water is regarded as an important source of sweet water because it has less pollution potential and it has high reserve capacity compared with surface water. Therefore, it I necessary to prevent pollution from ground water, considering management of ground water resources in line with quantitative management of water resources. In this research the potential vulnerability of ground water...

This paper investigates the relationship between river flow, rainfall and groundwater pumpage in the Mikkes stream during the period 1968-2009. The Mikkes basin is located in the north center of Morocco and consists of three different zones that represent diversified geologies. This basin includes a phreatic and confined aquifer in Saïs basin and a shallow aquifer in the Tabular Middle Atlas. A...

Groundwater arsenic (As) presents a public health risk of great magnitude in densely populated Asian delta regions, most acutely in the Bengal Basin (West Bengal, India and Bangladesh). Research has focussed on the sources, mobilization, and heterogeneity of groundwater As, but a consistent explanation of As distribution from local to basin scale remains elusive. We show for the Bengal Aquifer ...

In recent decades, there has been a growing emphasis on assessing aquifer vulnerability. Given the availability of spatial data and GIS advantages, mapping groundwater vulnerability become common tool for protecting managing resources. Here, we applied indexing an overlay method to explore combination potential contamination factors needed assess in Mosha aquifer. The from borehole logger chemi...

Las Loras UNESCO Global Geopark (UGGp) is geologically diverse, particularly in relation to water-derived features: springs, karst travertine buildings, waterfalls, caves. In this work, the interactions between geology, geomorphology, structures and hydrogeology are analyzed. As a result of study, first conceptual model hydrogeological functioning at UGGp presented. The most plausible hypothesi...

Changes in land use due to open pit mining operations, indirectly affect the hydrological cycle. Open especially method, greatly subsurface conditions, such as lithology and hydrogeology. The purpose of this study was analyze hydrogeological conditions before on syncline folds Mahakam river. This research is an inductive with analytical approach which includes use, geology, area dominated by pl...