Sediment Accumulation in Wet Detention/Retention Ponds Receiving Highway Runoff
Data were collected from nine highway wet detention ponds located in central to south Florida. Variables investigated were pond surface area, drainage area, percent impervious area, traffic volume, and pond age. A minimum of twenty-five sediment core samples were taken at each pond and were later analyzed in the laboratory for depth of loose sediment, sediment density, percent volatile solids, and grain size distribution. In-situ measurements of accumulated loose sediment depths above the parent soil in each pond were compared with the depth measured in the core samples collected from the field. A statistical regression equation using non-linear regression techniques was then developed to predict sediment accumulation rates (cm/yr) in highway detention ponds given certain physical characteristics of the pond and its drainage area. The ratio of the pond's surface area to its contributing drainage area was found to have a statistically significant correlation to the sediment accumulation rate in the pond. An existing model was used to simulate the removal efficiency of suspended sol ids in wet detention/retention ponds receiving highway runoff. This model was modified to account for the average sediment accumulation rates in cm/yr throughout the operational period of the pond. The predicted values of the model appear to follow the general trend of field measured values.
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Yousef, Yousef A.
Master of Science (M.S.)
College of Engineering
Civil and Environmental Engineering
Length of Campus-only Access
Masters Thesis (Open Access)
Dissertations, Academic -- Engineering; Engineering -- Dissertations, Academic
Sloat, John V., "Sediment Accumulation in Wet Detention/Retention Ponds Receiving Highway Runoff" (1990). Retrospective Theses and Dissertations. 4080.