Graduate Studies

 

First Advisor

Tirthankar Roy

Degree Name

Doctor of Philosophy (Ph.D.)

Committee Members

Andrea Basche, George Hunt, Michael Hayes, Yongping Yuan

Department

Civil Engineering

Date of this Version

8-2025

Document Type

Dissertation

Citation

A dissertation presented to the Graduate College of the University of Nebraska in partial fulfillment of requirements for the degree of Doctor of Philosophy

Major: Civil Engineering (Water Resources)

Under the supervision of Tirthankar Roy

Lincoln, Nebraska, August 2025

Comments

Copyright 2025, Shivendra Srivastava. Used by permission

Abstract

Flood events have significant implications for both population and environmental health. This dissertation aims to explore flood risk and its interaction with humans and the environment. The key questions addressed in this dissertation include improving the existing flood risk framework to better assess population vulnerability and associated risk. Additionally, it explores how interactions among risk components vary across spatial scales and regions, and how these variations influence overall flood risk. The dissertation also investigates how to design a vulnerability component specific to flooding within flood risk estimation. Finally, it answers whether flood-specific vulnerability differs for a population compared to vulnerability from other natural disasters. In the context of environmental health, this research examines the potential of different agricultural conservation practices (ACPs), such as cover crops, tillage management schemes, crop rotation strategies, and filter strips, in reducing peak runoff and enhancing water quality (sediment transport and nutrients). The dissertation also attempts to identify the trends in ACPs, followed by identifying the causal relationships among the atmospheric variables, water quantity and quality indicators, and the implementation of agricultural conservation.

Advisor: Tirthankar Roy

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