Document Type

Thesis

Degree

Master of Science (MS)

Department

Environmental Engineering

First Advisor's Name

Hector R. Fuentes

First Advisor's Committee Title

Committee Chair

Second Advisor's Name

Stephen P. Leatherman

Third Advisor's Name

Dean Whitman

Fourth Advisor's Name

Keqi Zhang

Date of Defense

3-10-2003

Abstract

The objective of this study was to develop a GIS-based multi-class index overlay model to determine areas susceptible to inland flooding during extreme precipitation events in Broward County, Florida. Data layers used in the method include Airborne Laser Terrain Mapper (ALTM) elevation data, excess precipitation depth determined through performing a Soil Conservation Service (SCS) Curve Number (CN) analysis, and the slope of the terrain. The method includes a calibration procedure that uses "weights and scores" criteria obtained from Hurricane Irene (1999) records, a reported 100-year precipitation event, Doppler radar data and documented flooding locations. Results are displayed in maps of Eastern Broward County depicting types of flooding scenarios for a 100-year, 24-hour storm based on the soil saturation conditions. As expected the results of the multi-class index overlay analysis showed that an increase for the potential of inland flooding could be expected when a higher antecedent moisture condition is experienced. The proposed method proves to have some potential as a predictive tool for flooding susceptibility based on a relatively simple approach.

Identifier

FI14032314

Comments

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