nitrate contamination is one of the main risks for groundwater in agricultural areas. theevaluation of the effect of agricultural practices on groundwater nitrate concentration, especially in highlysensitive areas, is crucial for a correct land planning, and a good agronomic intervention scheduling. aim of this paper is to map the probability to exceed nitrate regulatory threshold applying a no...

safety of a dam depends upon not only design and construction but also on the monitoring at the early years after impoundment. shahr- chai dam is located on the shahr- chai river and 12 km away from urmia city in the south- west. the construction of dam was ended in winter 2004, and then both of the dam impoundment and monitoring instrument readings were started, immediately. after ending dam c...

Past research has highlighted the importance of sediment delivery from multiple-occurrence regional landslide events triggered by storms or earthquakes. Herein, we examine a more persistent source sediment, that large, slow-moving in soft-rock hill country Aotearoa New Zealand. We map and monitor 80-ha Rangitikei Landslide 2015 to 2019 using time-lapse photography, ground surveys, photogrammetr...

Lots of dam failures are the result uncontrolled seepage. The collapse Situ Gintung Dam in Tangerang, Banten-Indonesia 2009 due to heavy rains caused structure collapse. This is increased pore water pressure landfill. To anticipate seepage, it necessary monitor based on behavior changes rainfall and reservoir levels. Seepage within body often monitored using instrumentation tools such as standp...

the importance of groundwater as a source of water supply in arid, semi –arid areas in recent years due to the uncontrolled exploitation of groundwater have been doubled. uncontrolled exploitation has been caused a drop in the water table in many areas of the country, including this region. with replace methods of modern irrigation instead of traditional irrigation methods can prevent drop the ...

In the area of Krško alluvial field, Brežice hydroelectric power plant (BHPP), with its surface water reservoir, was completed in 2017. The new BHPP reservoir dam is located approximately 7 km air distance downstream old nuclear (NEK) dam. NEK built 1970s. primary purpose to provide fresh for cooling reactor. To assess impact newly on groundwater, we performed a series data analyses prior const...

Many of the large number underground works constructed or under construction in recent years are unfavorable terrains facing unusual situations and conditions. This is case subject study this paper: a tunnel excavated evaporitic rocks that experienced significant karstification problems very quickly over time. As result situation, causes may underlie rapid investigated novel methodology present...

Relatively little is known about the deep water circulation and role of weathering processes on Critical Zone (CZ) evolution. In this study, major fractures from four boreholes collected these (20–60 m depth) were studied to improve our understanding CZ in a granitic headwater watershed (Strengbach watershed, France). Geochemical analysis indicates that chemical composition m) clearly different...

Hydrology and geochemistry studies were conducted in the Athabasca Oil Sands region to better understand water nitrogen cycles at two selected sites order assess potential for transport between adjacent terrain units. A bog—poor fen—upland system was instrumented near Mariana Lakes (ML) (55.899° N, 112.090° W) a rich JPH (57.122° 111.444° W), 100 km south 45 north of Fort McMurray, Alberta resp...