The management of urban sewer systems requires data about variability and discharge of typical waste water sources in urban catchments. Especially the infiltration of groundwater and the inflow of surface water (I/I) are important for decisions about rehabilitation and operation of sewer networks. In this paper a new methodology is presented which supports the identification and quantification ...

Groundwater recharge estimates are required for the management of river basin districts under the new Water Framework Directive. Different recharge estimation techniques are described in this paper according to the following categories: inflow estimation, aquifer response analysis, outflow estimation and catchment water balance. Examples of their application in Ireland are provided. All estimat...

Abstract. Freezing-induced groundwater-level decline is widely observed in regions with a shallow water table, but many existing studies on freezing-induced groundwater migration do not account for water-level fluctuations. Here, by combining detailed field observations of liquid soil content and fluctuations at site the Ordos Plateau, China, numerical modeling, we showed that interaction dynam...

Abstract This study aims to calculate the water balance, interaction with irrigation inflow, and hydrodynamics of Lake Beseka by a spreadsheet-based model using climatic, hydrological, multi-temporal satellite images, groundwater, lake chemistry data. The rainfall for catchment was estimated as 558.4 mm/year, whereas mean evaporation computed 2,214 mm/year Penman method. annual direct contribut...

This research aims to determine the effects of wastewater irrigation on groundwater quality west Girga, Sohag, Egypt. Twenty-six and one sewage-treated effluent samples were analyzed using standard methods for a range physio-chemical microbiological parameters. Surrounding plant, about 46% collected impacted by contamination, as indicated positive detections fecal coliform bacteria infiltrated ...

The groundwater inflow into a mine during its life and after ceasing operations is one of the most important concerns of the mining industry. This paper presents a hydrogeological assessment of the Irankuh Zn-Pb mine at 20 km south of Esfahan and 1 km northeast of Abnil in west-Central Iran. During mine excavation, the upper impervious bed of a confined aquifer was broken and water at high-pres...

—Kokanee (Oncorhynchus nerka lacustrine sockeye salmon) spawned in groundwater upwelling in the North Fork of the Payette River, Idaho. Intragravel water temperatures in groundwater-influenced redds exceeded surface flow water temperature by 2.4–2.68C. In redds without groundwater influence, intragravel and water column temperatures did not differ by more than 0.28C. Although redds constructed ...

A new risk analysis system for estimating the risk factors in tunneling is suggested in consideration of the complex effect in tunnel construction. It is verified that various risk factors can be expressed by stability and environment index using numerical and statistical analysis. Stability index includes the factors of safety of ground condition, the amount of ground settlement, condition of ...

The paper is concerned with the hydrogeological appraisal of the proposed mining operations in theThar lignite field in Sindh, Pakistan. The Thar coalfield covers an area of approximately 9000km2 andcontains three lignite seams lying at depth of 130m to 250 m. In the Thar lignite field, the presence ofthree main aquifers induces pore pressure in the rock mass surrounding the lignite seams and m...

The Ca Mau peninsula (CMP) is a key economic region in southern Vietnam. In recent decades, the high demand for water has increased exploitation of groundwater, thus lowering groundwater level and leading to risks degradation, depletion, land subsidence, as well salinity intrusion whole Mekong Delta region. By using finite element model with boundary expansion sea, we updated latest data on hyd...