Hydraulic Engineering Commons^™

Hydrologic Modeling Of The Lower Chesapeake Bay Watershed Using Hecc-Hms With Implications For Future Coupled Coastal Modeling, Christopher Leonard Frost

Civil & Environmental Engineering Theses & Dissertations

This study explores the hydrological methodology for modeling a coastal watershed basin using the US Army Corps of Engineers hydrologic software, HEC-HMS with an objective of being able to create riverine boundary conditions that could be applied to a coupled compound flood model. Compound flooding is defined as high water inundation event that occurs due to the simultaneous occurrence of multiple flooding drivers. The Atlantic Seaboard and the Gulf of Mexico regions of the United States account for most of the compound events observed in the United States with a higher occurrence caused by hurricanes from July to November. In …

Refinement Of A Regional Storm Surge Mesh For High-Resolution Topographic Representation Of Volusia County, Morgan Harbin

Doctoral Dissertations and Master's Theses

In 2022, Volusia and Flagler Counties of northeast central Florida were impacted indirectly by consecutive Hurricanes Ian and Nicole; the destabilization of dunes and armoring infrastructure caused by Ian left the region susceptible to Hurricane Nicole, which caused unprecedented coastal damage to dunes and seawalls. The extent of damage that occurred within Volusia and Flagler Counties during the 2022 hurricane season, the underrepresentation of this region within sustainability and resilience research, and the ecological, social, and economic value of the geography provide just cause for scientific inquiry of the area’s coastal dynamics. This thesis specifically describes an investigation of Hurricane …

A Strategic Framework For Attaining Golden Leed Certification For Resorts, Mohamad Soliman, Hadi Jawad, Mariam Younes, Oussama El Hamaoui, Saadeddine Ramadan

BAU Journal - Science and Technology

The contemporary landscape of engineering is witnessing a pivotal shift towards sustainability, encapsulated in the catchphrase "GO GREEN". This global trend underscores a strategic emphasis on sustainable design, where engineering projects prioritize a delicate balance among environmental, societal, and economic considerations.” However, a persistent challenge in construction projects lies in their tendency to neglect environmental impact, contributing to increased contamination levels. This paper aims to introduce the "Lodge in the Green" project, meticulously aligned with LEED Certification principles. LEED, or Leadership in Energy and Environmental Design, stands as the foremost green building rating system, highlighting its relevance in contemporary sustainable …

Culvert Design And Roadway Restoration Of Cavett Road At Damon Creek, Kevin Harvey

Honors College Theses

Cavett Road is a small, two lane rural road located in Kirksey, Kentucky. This road faces the issue of flooding during light-to-moderate rain, posing risk to those who use the road, especially those living along Cavett Road. This flooding is also capable of washing away the surface of Cavett Road and the adjacent banks and soil wall of the creek, creating a risk of erosion and soil subsidence. To reduce the risk of flooding and erosion and improve roadway function, this project outlines a potential solution using newly-installed reinforced concrete box culverts and soil fill above them to improve the …

Examining The Relationship Between Manning's Roughness Coefficient And Stage, Henry Holtkamp

Biological and Agricultural Engineering Undergraduate Honors Theses

This paper uses LOESS regression to predict Manning's roughness coefficient to calculate flows in natural stream channels. Manning's roughness coefficient can introduce variability into Manning's equation, potentially destabilizing results. Utilizing LOESS to find n based on backcalculated n from collected discharge vs. stage information is the best way to acquire accurate Manning's roughness coefficient values at a variety of flows. Book values tend to drastically overestimate which can have wide-ranging implications for water allocation, flood management, maintaining environmental flows, and maintaining water quality.

Combine Effects Of Heavy Storm, Sea Level Rise, And Wind-Induced Surge On Flooding In A Low-Gradient Coastal Watershed In Eastern Virginia, Rutvik Rajendrabhai Patel

Civil & Environmental Engineering Theses & Dissertations

This dissertation examines and presents mechanisms of flooding in a low-gradient coastal watershed, located in Virginia Beach, Virginia, USA. The watershed comprises the North Landing River watershed and the West Neck Creek watershed, both characterized by a low topographic gradient. The analysis relied on examining simulations generated using one-dimensional and two-dimensional HEC-RAS models. These models were developed using a 1-m digital elevation model (DEM) obtained from the U.S. Geological Survey (USGS). To calibrate and validate the models, unsteady flows resulting from historical hurricanes (e.g., Matthew, Sandy, and Isabel), southern winds, and/or rising sea levels were utilized. Some flows were caused …

Performance Evaluation Of Gravity Quay Walls Under Seismic Loads, Magdy Ali Fawzy, Bakenaz A. Zeidan, Yasser Elhakem, Ahmed I. Elshinnawy Dr.

Journal of Engineering Research

This study explores the seismic performance of a prototype block-type quay wall using the PLAXIS 2D software. The numerical model was forced by historical records of two earthquakes employing four soil types including sand, clay, gravel, and rock. The study investigated the influence of the earthquake seismic motion level, seismic motion configuration, peak ground acceleration (PGA) value, tidal range, and soil type on the structure behavior under the seismic action. Additionally, we assessed the accepted damage level of the structure based on the computed horizontal displacement and tilting. Results indicate that the structure behaves differently under the same seismic load …

Supply And Distribution Of Flow And Sediment In River And Delta System, Kazi M. Sadid

LSU Doctoral Dissertations

River deltas are valuable ecosystems that have been essential in supporting human populations and the economy across the world for centuries. However, climate change and human activities have caused significant land loss in delta areas. A prime example of a region that has suffered severe land loss is Louisiana in the United States. Coastal restoration is therefore essential for the livelihoods of its residents. To address this issue, the Lower Mississippi River (LMR) channel bar has been regularly dredged to rebuild degraded marsh areas. Additionally, sediment diversions off LMR have been designed to build marsh areas sustainably. This dissertation investigates …

Bear Lake Session, Lawrence Culver, Ben Shaw, Wesley Matthis, Mario Harper

Spring Runoff Conference

No abstract provided.

Investigating Gulf Coast Aquifer System: Stratigraphy Reconstruction, Inverse Modeling, And Groundwater Stress Assessment, Shuo Yang

LSU Doctoral Dissertations

The Mississippi Embayment aquifer system (MEAS) and the Coastal Lowlands aquifer system (CLAS) provide substantial groundwater resources for human activities in the U.S. Gulf Coastal Plain. However, the overexploitation has led to groundwater depletion in the MEAS and the CLAS, threatening sustainable groundwater use. Such concern highlights the crucial need for an advanced understanding of stratigraphy and groundwater in these aquifer systems, which is essential for effective regional groundwater management. This dissertation presents a comprehensive investigation of MEAS and CLAS in the Louisiana and southwestern Mississippi region, encompassing three fundamental dimensions: stratigraphy reconstruction, groundwater modeling, and groundwater stress assessments. A …

Maximize Drainage Design With Bentley Openroads Technology, Nathan A. Goins, Jennifer Basham

Purdue Road School

Whether you’re creating brand new drainage networks or tying into existing networks, learn how to maximize your efficiency with Bentley’s OpenRoads Drainage and Utilities (SUDA) Technology. We’ll explore tips, tricks, and lessons learned using this improved tool for drain-age design on INDOT projects.

Demystifying Utility Coordination: Understanding The Basics, Josshe I. Palm

Purdue Road School

This session will explain utility coordination to non-utility coordinators. It will help educate others about the role and responsibilities of a utility coordinator, an OSA, easy UC and design mistakes to avoid, scope and design considerations, items commonly overlooked, when to coordinate SUE, and how to work with your UC to request a letting adjustment. We will also highlight UC submittals and allow time for questions about the UC’s role in a project’s success.

Containerization Of Seafarers In The International Shipping Industry: Contemporary Seamanship, Maritime Social Infrastructures, And Mobility Politics Of Global Logistics, Liang Wu

Dissertations, Theses, and Capstone Projects

This dissertation discusses the mobility politics of container shipping and argues that technological development, political-economic order, and social infrastructure co-produce one another. Containerization, the use of standardized containers to carry cargo across modes of transportation that is said to have revolutionized and globalized international trade since the late 1950s, has served to expand and extend the power of international coalitions of states and corporations to control the movements of commodities (shipments) and labor (seafarers). The advent and development of containerization was driven by a sociotechnical imaginary and international social contract of seamless shipping and cargo flows. In practice, this liberal, …

Modeling Of Nearshore Wave Transformations Behind Submerged Breakwaters, Mona Mahmoud Abdelay, Ibrahim Mohamed Rashwan, Ahmed Shalby, Hewida Mohamed Omara

Journal of Engineering Research

Breakwaters can generally be divided into three categories based on where the sea level is: submerged breakwater, emerged breakwater, and lower limit breakwater. Nearshore barriers with an underwater structure called submerged breakwaters are used to dissipate the force of wave strikes and safeguard the shoreline. The wave transmission coefficient value can be used to assess submerged breakwaters' contribution to the wave energy decrease. In the past mathematical and physical models were used to understand how the submerged breakwater affects incoming wave energy, hydrodynamic processes, and morphological changes. In the present study, the MIKE21 SW software as the numerical model was …

Nebraska Water Center Annual Report 2024

Nebraska Water Center: Administrative Materials

The report's highlights updates including ongoing research, know your well, and the Nebraska master irrigator launch.

การใช้แสงไฟในเวลากลางคืนจากดาวเทียม คาดการณ์การใช้น้ำประปาของประเทศไทย, เจษฎายุทธ ไกรนรา

Chulalongkorn University Theses and Dissertations (Chula ETD)

งานวิจัยนี้นำเสนอการใช้ประโยชน์จากภาพถ่ายแสงไฟในเวลากลางคืนจากดาวเทียม (Night time light) และข้อมูลอื่น ๆ จากดาวเทียม มาเปรียบเทียบความสัมพันธ์กับการใช้น้ำประปา (ปริมาณน้ำจำหน่าย) ของจังหวัดต่าง ๆ ในประเทศไทย โดยวิธีการหาความสัมพันธ์ของปริมาณน้ำจำหน่ายกับข้อมูลที่ได้จากดาวเทียม เปรียบเทียบกับ ความสัมพันธ์ของปริมาณน้ำจำหน่าย กับข้อมูลจากหน่วยงานภาครัฐ ได้แก่ ผลิตภัณฑ์มวลรวมรายจังหวัด (GPP) จำนวนประชากรรายจังหวัด (POP) โดยการประยุกต์ใช้โปรแกรม QGIS แปลงข้อมูลจากดาวเทียม ได้แก่ ค่าแสงไฟในเวลากลางคืน (NTL) ค่าพื้นที่เมือง (URBAN) และค่าอุณหภูมิพื้นผิวในเวลากลางวัน (TEMP_DAY) ออกมาเป็นตัวเลขค่าเฉลี่ยรายจังหวัด เมื่อนำผลลัพธ์ที่ได้มาวิเคราะห์ความสัมพันธ์ระหว่างปริมาณน้ำจำหน่ายกับข้อมูลที่ได้จากดาวเทียม พบว่าข้อมูลที่ได้จากดาวเทียมสามารถใช้เป็นตัวแทนของข้อมูลจากภาครัฐได้ค่อนข้างดี คือสามารถใช้เป็นตัวได้จำนวน 3 กลุ่มจังหวัด คิดเป็นร้อยละ 28 ของทั้งประเทศ ดังนั้น จึงสรุปได้ว่าแสงไฟในเวลากลางคืน และข้อมูลอื่น ๆ จากดาวเทียมสามารถนำมาเป็นตัวชี้วัดและนำมาใช้ประโยชน์ในการวางแผนการขยายระบบประปาในอนาคตได้อย่างมีประสิทธิภาพ คำสำคัญ: แสงไฟในเวลากลางคืน (Nighttime Light), การใช้น้ำประปาของประเทศไทย

Dynamics Of Separated Flows In Diffusers With Vortex Generators, Sandeep Eldho James

Mechanical and Aerospace Engineering Dissertations - Archive

Flow through curved diffusers is complicated due to the possibility of flow separation and secondary flows. Vortex generators (VGs) are a class of passive flow separation control devices used to improve the flow quality in curved diffusers by suppressing flow separation. However, the literature review demands an in-depth investigation on the physical mechanisms related to flow separation control. Thus, this study aims to improve the understanding of the underlying flow physics associated with VG-induced flow separation control in confined flows. The chosen geometry for this study is a well-documented asymmetric diffuser which exhibits a mild flow separation.

The theoretical formulation …

Analysis Of Sediment-Discharge Hysteresis With The Interaction Of Hydrologic And Landscape Factors In The Upper Ping And Nan River Basin, Thailand, Soklin It

Chulalongkorn University Theses and Dissertations (Chula ETD)

Understanding landscape and climate influences on sediment transport is critical for managing river basins sustainably. This study investigates hydrological-sediment dynamics in the upper Ping and Nan River Basins in northern Thailand. The research focuses on three objectives: (1) identifying types and temporal trends of hysteresis between discharge and sediment concentration (Q–SSC); (2) quantifying interactions among hydrological and vegetation variables using Principal Component Analysis (PCA); and (3) analyzing structural relationships among climate, vegetation, and sediment transport through Partial Least Squares Structural Equation Modeling (PLS-SEM). Hysteresis analysis revealed significant spatial and temporal variability in sediment dynamics. The Ping River Basin (stations P.75, …

Development Of Regional Severity-Duration-Frequency (Sdf) Curves In Cambodia Using Standardized Precipitation Index (Spi), Sophanny Phan

Chulalongkorn University Theses and Dissertations (Chula ETD)

Drought is one of the most destructive natural hazards that causes scarcity and lack of water in hydrological basins and impacts economic, social, and environmental system. This study aims to develop Severity-Duration-Frequency (SDF) curves to provide a comprehensive characterization of droughts in the Lower Mekong River Basin in Cambodia from 1985 to 2022. A Bayesian bias correction technique was applied to improve reanalysis rainfall data from ERA-5, resulting in enhanced accuracy which evidenced by an 11% increase in correlation coefficients (R), a 9% improvement in Nash-Sutcliff efficiency (NSE), and a 45% reduction in RMSE. The corrected rainfall data were then …

Evaluating Flood Hazards And Damage On Paddy Fields: A Case Study Of The Prek Thnot River Basin, Cambodia, Koem Sreang Ka

Chulalongkorn University Theses and Dissertations (Chula ETD)

Flooding is a pervasive natural hazard that leads to substantial damage, economic losses, and social disruption. In Cambodia, the Lower Mekong River basin is particularly prone to recurrent flooding due to seasonal monsoons. The Prek Thnot River, a Bassac and Mekong Rivers tributary, experiences heightened flood risks from heavy rainfall and fluctuating water levels. This study aims to assess flood inundation hazards during extreme events and evaluate paddy damage within the Prek Thnot River Basin (PTRB). By analyzing rainfall data from eight monitoring stations, we performed a frequency analysis. The LP3 distribution is identified as the most optimal distribution for …