FIELD and laboratory methodologies for measuring saturated hydraulic conductivity (Ks ) have been the focus of much attention because Ks is recognized to be one of the most sensitive parameters in predictive hydrological models.Direct measurements are preferred for its determination because indirect methods,usually based on soil textural characteristics combined with aggregate analyses, do not ...

Data obtained from modified cone penetrometer experiments were used to estimate the hysteretic soil hydraulic properties with a parameter estimation technique which combined a numerical solution of the Richards equation with Marquardt-Levenberg optimization. The modified cone penetrometer was designed to inject water into a soil through a cylindrical screen, measure the infiltration rate with t...

The Tamarack State Wildlife Area in eastern Colorado is being investigated as a possible managed recharge project to redirect flows in the South Platte River for water quantity management. Two primary surface water/groundwater interactions exist at Tamarack: (1) between the South Platte River and alluvial aquifer and (2) between backwater sloughs, or secondary river channels, and the alluvial a...

The effectiveness of a pervious concrete pavement to transport water through it depends on the intrinsic permeability of the system. However, this characteristic is usually defined in terms of the porosity of the material. It has been observed that porosity alone is an inadequate indicator of the permeability of pervious concretes, since the permeability depends on pore sizes, geometry and conn...

Abstract Unsaturated permeabilities of six different kaolin-sand mixtures named as 100K0S, 90K10S, 80K20S, 50K50S, 20K80S, and 10K90S were directly measured using a modified flexible wall triaxial permeameter system. 90K10S means that the soil mixture contains 90% kaolin 10% sand by dry mass. Soil–water characteristic curves (SWCC) also for wide range suctions Tempe pressure cell, 5-bar plate, ...

The soil water behavior of sandy soils was studied under semiarid conditions in the Shendong mining area (China). content (θ) measured different depths and topographies using an HH2 moisture meter. infiltration process a Guelph permeameter. A set hydrodynamic variables calculated laboratory. θ first 20 cm lowest increased with depth. from top slope to bottom slope. experiments showed that stead...

Daerah penelitian terletak pada Zona Rembang, secara administratif yaitu Desa Beji dan sekitarnya, Kecamatan Kedewan, Kabupaten Bojonegoro, Provinsi Jawa Timur. Maksud dari ini adalah mengetahui kondisi geologi, geomorfologi, stratigrafi, struktur sejarah serta kualitas porositas permeabilitas untuk penentuan batuan reservoir daerah penelitian. Pada geologi kali dilakukan dengan permuakaan pene...

The Wells G and H Superfund site, located in the Aberjona watershed in Woburn, Massachusetts, has been studied by a number of MIT research groups since 1987. Initial research conducted to characterize the hydraulic properties of the wetland deposits, did not indicate the classical trend linking changes in hydraulic conductivity to changes in total porosity. It was hypothesized, therefore, that ...