نتایج جستجو برای: overland flow
تعداد نتایج: 482333 فیلتر نتایج به سال:
Riparian areas link streams with their terrestrial catchments and decrease water pollution by trapping sediments from upland sources before they reach streams or lakes. Livestock grazing in riparian areas is a controversial practice. If not properly managed, cattle can cause degradation to both the riparian zone and adjacent water body. Vegetative, soil microtopographical, microchannel and hydr...
Land-use change acts as a potential moderator of flood risk, affecting vegetation and soil properties thus influencing the storage flow water across landscapes. This study, conducted in northwest England, investigated physical their hydrological function using overland moisture sensors, for five upland grassland habitats each created through management action. Overland was common, occurring up ...
Contents 1. Introduction 2. The two-dimensional models of overland flow 3. The equations of one-dimensional channel flow 4. Simplification of the St. Venant equations 5. Linearization of the St. Venant equations and solution of linear equations 6. Kinematic wave equations and their application 7. Numerical solution of the unsteady flow equations 8 Application of finite elements methods 9. Lumpe...
Abstract Though riparian areas generally have a shallow water table and higher soil moisture compared to upslope areas, climatic seasonality may trigger repellency in tropical forests, which, if persistent, could negatively affect essential ecosystem functions related resources protection such as reduced overland-flow, sediment transport, nutrient filtration. The objective of this study was ans...
Nonpoint-source pollution from agricultural activities is currently the leading cause of degradation of waterways in the United States. Applying best management practices to flood-irrigated mountain meadows may improve agricultural runoff and return flow water quality. Prior research has focused on fertilizer use for increased hay yields, while few studies have investigated the environmental im...
Cryptosporidium, a manure-borne protozoan parasite that is common in the environment, has recently been recognized as an important microbial contaminant of water. Cryptosporidium parvum (C. parvum) can cause infection and diarrhea in many mammalian hosts, including humans. Because cattle, particularly calves, are considered a major source of C. parvum , it is important to understand the movemen...
The city of Mississauga has recently identified strategic growth areas where investments will be targeted for redevelopment and intensification projects. One of the growth areas has a history of flooding during major storm events. In order to redevelop this area, businesses and land owners need to prepare development proposals ensuring that appropriate flood proofing requirements have been achi...
The Muskingum-Cunge flood routing procedure has been incorporated into the Natural Resources Conservation Service Technical Release 20 (TR-20) hydrologic model. The TR-20 model is an event watershed hydrologic model used to analyze impacts of watershed changes (land use, reservoir construction, channel modification, etc) on volume of runoff and peak discharge. Rainfall runoff modeling is very i...
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