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Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 11 of 11 for “"Land drainage"”.
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A regional approach to the geographical study of land drainage enterprises in Champaign County, Illinois
Made available in DSpace on 2017-05-18T15:22:24Z (GMT). No. of bitstreams: 2 6374397_opt.pdf: 5484363 bytes, checksum: 90e2b46d01863bd19b40359b5dfb10c8 (MD5) license.txt: 4813 bytes, checksum: 715c4321821a960fa1a1e91d2ac7ebce (MD5) Previous issue date: 1951
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The effects of non-point source pollution on surface water quality, Clayburn Watershed, Abbotsford, British Columbia, Canada
… urban rainwater runoff and agricultural land drainage generally enter surface watercourses untreated. Existing literature suggests that both inputs can potentially contribute to non-point source pollution. This study evaluates the effects of non-point source pollution on surface water …
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Sources and yields of nutrient and organic loadings in the Roanoke River Basin above Smith Mountain Lake, Virginia
… data were used in conjunction with flow and drainage area data to determine the relative magnitude and daily yields of nutrient and organic yields from various sources. Sources of nutrient and organic materials entering the basin included rural and urban land drainage, and domestic and …
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Agricultural and forest land runoff in upper South River near Waynesboro, Virginia
… and iron. These data were used with flow and drainage area data to determine the relative magnitude and daily yields of materials from various sources. Sources of organic matter, suspended solids, and nutrients entering the South River included agricultural, forest and urban land drainage as …
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An evaluation of soil and water management practices on a lowland soil with poor natural drainage
… Fraser Valley tend to have poor natural soil drainage. Excess moisture, because of a high water table and ponded surface water, restricts the range of crops that can be grown and influences farm management decisions regarding the nature and timing of field operations. When economic …
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Managing wet grassland landscapes: impacts on predators and wader nest predation
… has been widespread loss and degradation of wetlands resulting from land drainage and agricultural intensification. Many breeding wader populations in wetlands across Western Europe have declined severely as a consequence of this habitat loss, and their ranges are now increasingly restricted to …
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Soil erosion and suspended sediment dynamics in intensive agricultural catchments
… worldwide, and particularly in Ireland. This thesis established a sediment monitoring network upon an existing catchment study programme (Agricultural Catchments Programme) in five instrumented catchments (~10 km2) across Ireland. The research used novel, high quality measurement …
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Perspectives on the Geomorphic Evolution and Ecology of Modified Channels and Two-Stage Ditches in the Agriculturally-Dominated Midwestern United States
<p>We provide a critical review of the massive land drainage works, water resource degradation and a persistent eutrophication problem in agriculturally-dominated watersheds, such as the Gulf of Mexico and the Great Lakes, which have led to examination of managing agricultural drainage ditches for …
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The application of electro-analytical techniques to sea water analysis
… remote from the influence of tidal action, land drainage and similar disturbances, slight changes in the above-mentioned properties may be of considerable significance. In marine biology, inter alia, a knowledge of the cheinical nature of the waters is required. In this case considerable …
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Some properties of Washington County soils and their relation to soil type and plant growth
… Notes were made of the soil type, slope of the land, drainage conditions, erosion, and land utilization. When samples were taken from cultivated fields, the yield of the crop was estimated. When samples were taken from pasture, notes were made of the type and condition of the vegetation. 2. The …
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Applied ecology and management of a European barbel Barbus barbus population of a lowland river
… recreational and economic value. In lowland rivers, habitat alterations include impoundments and activities such as channel straightening, impacting aspects of fish behaviour and lifecycle completion. Species such as European barbel B. barbus are particularly affected due to their …