Sediment Accumulation in Wet Detention/Retention Ponds Receiving Highway Runoff

Abstract

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.

Notes

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Graduation Date

1990

Semester

Fall

Advisor

Yousef, Yousef A.

Degree

Master of Science (M.S.)

College

College of Engineering

Department

Civil and Environmental Engineering

Degree Program

Civil Engineering

Format

PDF

Pages

164 p.

Language

English

Length of Campus-only Access

None

Access Status

Masters Thesis (Open Access)

Identifier

DP0027743

Subjects

Dissertations, Academic -- Engineering; Engineering -- Dissertations, Academic

Accessibility Status

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