Date of Award:

5-2025

Document Type:

Thesis

Degree Name:

Master of Science (MS)

Department:

Civil and Environmental Engineering

Committee Chair(s)

Colin B. Phillips

Committee

Colin B. Phillips

Committee

Bethany T. Neilson

Committee

Patrick Belmont

Abstract

Rivers are dynamic systems that change shape due to natural events like floods, landslides, and wildfires, as well as human-made structures like bridges. These changes create unique and complex river patterns. However, measuring these changes accurately is challenging because traditional field surveys are time-consuming and often focus on easily accessible areas, which may not represent the whole river. Thanks to new high-resolution mapping technology and detailed river flow records, we can now see these changes in greater detail than ever before.

In this study, we focused on the Logan River, which flows through a canyon with a mix of rocky and sediment-filled areas. Using advanced mapping tools, we measured the river's width along a 45 km stretch and checked these measurements against field surveys to ensure accuracy. This approach allows us to identify sections of the river that show consistent patterns and those that deviate due to factors like incoming streams or human impacts like roads. Understanding these variations helps us to better plan for infrastructure projects, river restoration, and managing natural hazards. Our method provides a new way to understand how changes in the environment affect rivers, which can lead to smarter, more resilient design and planning.

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