Surface and groundwater dynamic interaction in the Upper Great Chaophraya Plain of Thailand is explored. The surface-soil water model SWAT and the groundwater model MODFLOW are semi-coupled to determine the various hydrological components and their relevant flow behaviour. The coupled models are executed by running the simulations individually using the monthly river-groundwater interactions an...

Increasing environmental pressures, pollution and legislation in Europe are creating the urgent need for regional-catchment scale geological models to assess hydrogeological conditions and inform mathematical and numerical groundwater models. Geological models are especially important in areas with superficial deposits overlying key aquifers. These areas are often characterized by very complex ...

to study the spatial and temporal variation of nitrate pollution in groundwater in the vicinity of zayandehrud river in isfahan province monthly water samples were collected from 100 wells in the study area. the average n03-n concentration ranged from 1.2 to 25.7 mg/l (5.4 to 115.6 mg/i as no3) and average n03-n concentration in groundwater was 9.6 mg/i, which is lower than the standard limit (...

A significant proportion of the world’s population use potable water for drinking, cooking, personal and home hygiene (WHO, 2004). Indeed water is life. According to Gore (1993), “Human beings are made of water, in roughly the same percentage as water is in the surface of the earth. Our tissues and membranes, brains and heart, our sweat and tears all reflect the same recipe for life, in which e...

Pharmaceutical contamination of shallow groundwater is a substantial concern in effluent-dominated streams, due to high aqueous mobility, designed bioactivity, and effluent-driven hydraulic gradients. In October and December 2012, effluent contributed approximately 99% and 71%, respectively, to downstream flow in Fourmile Creek, Iowa, USA. Strong hydrologic connectivity was observed between sur...

Recent events, news articles in the popular press, and research outside the field of economics have raised alarming questions about the sufficiency of global freshwater supplies and the potentially devastating impacts of current and future water shortages. For example, the 2008 Beijing Olympics drew attention to the problems of pollution and water shortages in China, where massive infrastructur...