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Full-Text Articles in Hydrology
An Evaluation Of Phosphorus Export From Four Urban Land Uses During Summer Rainfall-Runoff Events In The Laurel Creek Watershed, E. Martin Pemberton
An Evaluation Of Phosphorus Export From Four Urban Land Uses During Summer Rainfall-Runoff Events In The Laurel Creek Watershed, E. Martin Pemberton
Theses and Dissertations (Comprehensive)
Cultural eutrophication, resulting from anthropogenic inputs of nutrients, such as phosphorus, can be detrimental to aquatic ecosystems. The effectiveness of recent phosphorus abatement programs, focused on point source inputs such as municipal and industrial effluent, has brought attention to the reduction of non-point sources, such as urban runoff. Target phosphate loads for the Great Lakes, set by the International Joint Commission, are deemed unattainable, without phosphorous reduction from non-point sources (Yaksich and Rumer, 1980), and it is with this knowledge that this thesis is undertaken. Analysis of phosphate export data from areas of different urban land uses indicates that residential …
Characteristic Discharge And Suspended-Sediment Relationships In Two Glacier-Fed Rivers In The Karakoram, Richard E.J. Kelly
Characteristic Discharge And Suspended-Sediment Relationships In Two Glacier-Fed Rivers In The Karakoram, Richard E.J. Kelly
Theses and Dissertations (Comprehensive)
The purpose of this thesis is to investigate relationships between meltwater flow and production and flushing of suspended-sediment beneath two alpine glaciers. During the ablation seasons of 1987 and 1988, discrete, hourly measurements were taken of discharge, stage, suspended-sediment concentration and electrical conductivity in two rivers draining catchments of the Bualtar and Batura Glaciers in the Karakoram, N. Pakistan. The discharge time series of the Bualtar River reveals that flow varies over a daily period of three to four weeks, at a diurnal level and over one to four hours. Over all three time scales, electrical conductivity is inversely proportional …
Water Quality Dynamics In Meltwaters Draining Peyto Glacier, Alberta, Christopher Bradley
Water Quality Dynamics In Meltwaters Draining Peyto Glacier, Alberta, Christopher Bradley
Theses and Dissertations (Comprehensive)
Variations in the quantity and quality of meltwaters draining Peyto Glacier, Alberta, are assessed to examine to what extent meltwater characteristics might be indicative of any distinctive source and routing of water through a glacierised drainage basin. Continuous monitoring of solute concentrations of the principle melt-stream, Peyto Creek, was undertaken for significant periods in 1982, 1984 and 1987, coupled with measurements of suspended sediment concentration at the glacier terminus. Discharge of meltwater was determined for periods in 1982 and 1987. Supplementary monitoring of hydrogen-ion variation and total solute concentration was undertaken at additional sites within the basin, at a stream …
The Effect Of Mid-Winter Snowmelt Events On Nitrate And Ammonium Concentration In The Unsaturated And Shallow Saturated Zones: A Case Study, Richard J. Elgood
The Effect Of Mid-Winter Snowmelt Events On Nitrate And Ammonium Concentration In The Unsaturated And Shallow Saturated Zones: A Case Study, Richard J. Elgood
Theses and Dissertations (Comprehensive)
During the period of December 19, 1987 to March 28, 1988, the unsaturated and shallow saturated groundwater zones under two agricultural land use sites, near Waterloo, Ontario, were investigated to determine the effect of snowmelt percolation on the groundwater quality. Periods of widely fluctuating temperatures and sporadic rain events produced large changes in snowpack water equivalence. The resulting infiltration of snowmelt significantly altered the extent of the saturated area and the concentration of N (nitrogen) ions in both the soil column and percolate water. An N flux from the vadose (unsaturated) zone to the shallow phreatic (saturated) zone, occurring in …