The main objective of this study was to examine the implications watershed management (WSM) on hydrological parameters in Aba Gerima Upper Blue Nile Basin. Hydrus 1D model simulations were conducted control sites and under WSM estimate various components hydrologic cycle, using different soil physical & data each category experimental sites. Results calibrated with measured moisture through...

It has been observed through experiments that many chemicals especially pesticides found in streams and groundwater bodies are transported surface runoff and/or preferential flow processes. Researchers have also proved the timing nature of rainfall since last pesticide application often described as significant controls on transport Rainfall variability is now considered climate drivers contami...

Soil water content (SWC) plays a vital role in the process of evapotranspiration (ET) rubber plantations. To investigate influence ET on soil balance plantations, we measured SWC at depths 10, 20, 30, 40, 70, 100, 130 cm, characteristics root density distribution, and estimated deep percolation plantation Xishuangbanna using Hydrus-1D model. Our results indicate model can accurate simulate dyna...

Because tires contain approximately 1-2% zinc by weight, zinc leaching is an environmental concern associated with civil engineering applications of tire crumb rubber. An assessment of zinc leaching data from 14 studies in the published literature indicates that increasing zinc leaching is associated with lower pH and longer leaching times, but the data display a wide range of zinc concentratio...

Sulfonamide antibiotics are a commonly used group of compounds in animal husbandry. They are excreted with manure, which is collected in a storage lagoon in certain types of confined animal feeding operations. Flood irrigation of forage fields with this liquid manure creates the potential risk of groundwater contamination in areas with shallow groundwater levels. We tested the hypothesis that-i...

Accurate estimates of groundwater recharge are essential for effective management of groundwater, especially when supplies are limited such as in many arid and semiarid areas. In the Hebei Plain, China, water shortage is increasingly restricting socioeconomic development, especially for agriculture, which heavily relies on groundwater. Human activities have greatly changed groundwater recharge ...

N-nitrosodimethylamine (NDMA) is a potential carcinogen frequently found in treated wastewater as a byproduct of chlorination. The potential for NDMA to contaminate the groundwater is a significant concern. A solute fate and transport model, Hydrus-1D, was used to evaluate the leaching potential of NDMA under different irrigation practices and soil properties. The results indicate that the risk...

Chemical and biological transformations can significantly affect contaminant transport in the subsurface. To better understand such transformation reactions, an equilibrium-nonequilibrium sorption transport model, HYDRUS-1D, was modified by including inverse solutions for multiple breakthrough curves resulting from the transport of solutes undergoing sequential transformations. The inverse solu...