For phosphorus (P) transport from upland areas to surface water systems, the primary transport mechanism is typically considered to be surface runoff with subsurface transport assumed negligible. However, certain local conditions can lead to an environment where subsurface transport may be significant. The objective of this research was to determine the potential of subsurface transport of P al...

Watersheds have different water compartments (surface, subsurface, and underground) connected by the soil-water interface. In order to be able relate these compartments, monitoring data are necessary, such as case of Ribeirão Concórdia watershed, in Lontras, Santa Catarina (SC). This study aimed evaluate behavior correlation between rainfall-runoff phreatic surface levels with chemical species ...

Excess phosphate (P) loading to surface waters increases productivity sometimes causing an imbalance leading eutrophication and water quality degradation. Wastewater contains elevated concentrations of P other contaminants that pose threats environmental health. Onsite wastewater systems (OWS) are used in many rural areas, but most not monitored for removal effectiveness. The goal this research...

Abstract As the groundwater quantitative monitoring aimed to determine factors affecting aquifer behavior plays an important role in its regional management, studying temporal and spatial level variations requires a comprehensive network. Effort has been made this study introduce new linked simulation–optimization method, named MLPG-TLBO quantitatively monitor Birjand optimal points for piezome...

The article provides recommendations on the possibility of implementing an automated system diagnostical control over operational condition a dam. Implementation BING-3 allows to opening cracks in concrete structures, take readings from piezometers and air temperature sensors automatic regime. gives analysis instruments used for diagnostics reasons failure certain devices. It has been establish...

The study of the reliability and safety constructed earth-fill dams comparison with their design calculated data makes it possible to improve structures methods calculation substantiation these structures. This work aims filtration dam Channel water reservoir Tuyamuyun hydroelectric complex (THC) on Amu Darya River, which was put into exploitation in 1984. Field studies were carried out accordi...

In 1996 and 1997 a monitoring network was set up at the translational slide of Vallcebre. Fourteen boreholes were equipped with piezometers, wire extensometers and inclinometers. Since then groundwater levels changes and wire displacements have been automatically recorded every 20 minutes. Superficial displacements have been periodically measured with differential GPS. The monitoring network ha...

Geosynthetic reinforced capping of highwater content waste materials is becoming an efficient and economic way of dealing with the confinement of the contaminants. To define the filtration performance of sludge-geotextile systems and investigate their durability, ten sludge lagoon test cells were constructed using of a lightweight fill, i.e. a wood chip/soil mixture over different geotextiles. ...

Oscillatory well pumping was proposed recently as a tool for hydraulic tomography. Periodic pumping at a few frequencies is carried out through vertical intervals along the pumping well and the periodic head is measured along a few piezometers. The paper presents an analytical solution for the head field in an unconfined aquifer of finite depth under the common assumptions of a linearized water...

[1] New semianalytical solutions for evaluation of the drawdown near horizontal and slanted wells with finite length screens in unconfined aquifers are presented. These fully three-dimensional solutions consider instantaneous drainage or delayed yield and aquifer anisotropy. As a basis, solution for the drawdown created by a point source in a uniform anisotropic unconfined aquifer is derived in...