Slovenian karst areas extend over 43% of the country; limestones and dolomites of the Mesozoic era prevail. In Slovenia karst groundwater contributes up to 50% of the total drinking water supply. The quality of water is very high, despite the fact that it is extremely vulnerable to pollution. The present article is a study and a review of the potential and actual sources of pollution to the gro...

A freshwater lens underlain by saltwater exists beneath the entire northern Yucatan karst plain, Mexico. Water levels recorded in this plain, during the period June 1987 April, 1989, were used to map the water table, identify inland hydrogeologic boundaries, and estimate the thickness of the freshwater lens using the Ghyben-Herzberg relation. The water table under most of northwestern Yucatan i...

Groundwater is one of the crucial water resources for domestic, agriculture and other purposes in Kurdistan Region Iraq, which counted as a semiarid region with seasonal precipitation winter. The geogenic source arsenic fluoride groundwater has been studied part Zagros Basin, using hydrogeochemical method. analysis results showed that concentrations range from 0.19 to 7.8 µg/L 0.01 2.1 mg/L, re...

Fractured and karst aquifers are important groundwater reservoirs widely used to provide drinking water the population. Because of presence fractures with varying geometry properties providing preferential flow paths, fractured highly heterogeneous difficult characterize model. In this context, geophysical methods can relevant spatially distributed data about fractures, that be further integrat...

Karst water resources represent a primary source of freshwater supply, accounting for nearly 25% the global population needs. aquifers have complex recharge characteristics, storage patterns, and flow dynamics. They also face looming stress depletion quality degradation due to natural anthropogenic pressures. This prompted hydrogeologists apply innovative numerical approaches better understand ...

A gold mining area is a floor water-filled deposit dominated by karst fissure water of Maokou Formation. The roof blocked silty mudstone Longtan Formation, and large amount develops below the water-resisting roof, so conditions are complicated. It was reported that inrush accident has occurred in 1097 section area, which not caused heavy casualties, but from aquifer still hidden threat area. Th...

A new genus and species of stygobiontic bidessine dytiscid beetle, Comaldessus stygius, from Comal Springs, Texas, is described and compared with the proposed sister epigean genus Uuarus and the only other known stygobiontic bidessine water beetles, Trogloguignotus concii Sanfilippo from Venezuela and Uvarus chappuisi (Peschet) from Africa. Distinctive characters of the adult are illustrated wi...