Civil and Environmental Engineering Commons^™

Fishhook Sunrise Bed & Breakfast Expansion, Carter Johnson, Andrew Lecheminant, Heather Nielsen, Erika Parsons, Tyler Searle

Civil and Environmental Engineering

The Willardsons, owners of Fishhook Sunrise Bed & Breakfast, located near Palmer, AK, demonstrated interested in expanding their existing bed and breakfast to accommodate future visitors. The expansion includes three new cabins on the northwest side of the property, across Wasilla Creek, which has no existing infrastructure. The expansion, therefore, includes the installation of a drinking water well, access road, septic system, and bridge. Fishhook Engineering proposed providing a site layout for the expansion with high level recommendations for the septic system and roadway material. The project scope also included the complete design of a one lane bridge to span …

Laytona Subdivision Storm Drain System, Tyler Roberts, Mitchell Wagner

Civil and Environmental Engineering

Laytona Subdivision, located in Layton, UT, currently uses traditional curb and gutter to transport storm runoff. This system is no longer adequate due to lack of slope and aging curb and gutter. Layton City will replace the current system with an underground storm drain system. Storm water runoff will be collected and transported to an existing detention pond.

• Alternatives Three other alternative storm drain systems were considered for this project.

• Cost Estimate The estimated cost of completion is $831,710.00.

• Design Software To complete this project ASE used AutoCAD Civil 3D, Excel, and Autodesk Storm and Sanitary Analysis. …

Logan River Restoration (Downstream), Drew Bassett, Amanda Blair, Brooklyn Morgan, Dakota Sparks

Civil and Environmental Engineering

Historical projects by local landowners attempted to improve the passage of flood flows through the Logan River by channelizing the river. The removal of foliage in this process resulted in unforeseen bank erosion and channel scouring. This project analyzes existing river conditions and proposes changes to a section of the Logan River from the Crockett Diversion to Center Street to improve the floodplain, reduce river temperatures, and add recreation.

Mendon Historic Barn Restoration, Andrew Flake, Jaison Hardman, Kaleb Nelson, Taylor Reese

Civil and Environmental Engineering

The Hardman Family owns a historic barn located on the West side of Mendon City backed by the scenic Wellsville Mountains. The barn is currently in a dilapidated condition and is likely to collapse at any time. The Hardmans would like to evaluate the feasibility of reconstructing the barn with the goal of retaining the original barn’s aesthetic value. The reconstructed barn would serve as an events center that would be rented out as a source of income for the family.

Mill Race Diversion On The Weber River, Tyler Ashby, Carina Jones, Nick Langford, Jake Orton, Polo Su'a-Filo

Civil and Environmental Engineering

Trout Unlimited designated the Mill Race irrigation diversion located in Morgan, Utah, and shown in Figure 1, as problematic for fish passage and recreational usage. AAA Engineering was tasked with designing a replacement diversion structure to allow fish passage, recreational use, and provide flood control on the Weber River.

Along with the diversion, AAA Engineering was asked to design a pedestrian bridge that connects the community north of the Weber River to Morgan High School and athletic fields to the south.

Muddy Creek Pressurized Irrigation System, Smc (Sunderland, Mangum, Clark) Engineering

Civil and Environmental Engineering

Muddy Creek Irrigation Company (MCIC) has been providing irrigation water for farmers in and around Emery since the early 1800’s. Many of the original canals are still in use today. The earthen canals lose 35-40% of the water that is being delivered to infiltration. The purpose of this project is to replace the existing canal system with a water reservoir and a pressurized irrigation pipeline design. Figure 1 presents the existing canal system to be replaced.

Munition Storage Magazines (Msms), Matthew Endicott, Michael Garcia, Quinn Lythgoe

Civil and Environmental Engineering

Hill Air Force Base (HAFB) currently has two aging Munition Storage Magazines (MSMs) and is planning to replace these with modern MSMs. HAFB’s new project will implement five new MSMs to increase their capacity, see Fig 1. HHI Corporation, the client, has acquired the project and has decided to include QM² Engineering as a subcontractor.

QM² Engineering has worked on the site layout of the five MSMs, foundation design, retention pond, and access road. Portions of the MSMs are pre-designed by the US Army Corps of Engineers, but require a site specific foundation, see Fig 2. QM^{2 …}

Park Valley Livestock Water System, Calyn Arnold, Zachary Hulsey, Nathan Raine

Civil and Environmental Engineering

Western Skies Engineering proposed the installation of a livestock waterpipeline in Park Valley, Utah. A pipeline would be needed to provide waterfrom a recently drilled well to a series of troughs, providing water for 200head of cattle. The proposed pipelines would total about 1 mile in length,cross a major highway, and rise and fall with the regional topography. Anoff-grid energy system was proposed to sustain the well, and a pump houseproposed to protect the head of the well from the environment.

Storm Water Solutions: 1800 North 600 West Regional Detention Basin, Aaron Hall, Tucker Jorgensen, Sam Odd

Civil and Environmental Engineering

Storm Water Solutions was tasked by Logan City to design a storm water detention and treatment system that addressed the following tasks:

• Model storm events in drainage basin to determine storm water runoff volumes, especially the 90^th Percentile Storm.

• Remove storm water from irrigation conveyance system through design of storm diversion structure to eliminate crop flooding and system maintenance costs.

• Determine methods to reduce phosphorous entering Cutler Reservoir through a low maintenance, sustainable process.

• Retrofit existing storm water system to meet current Logan City design standards and budgetary constraints.

Tuni Grande Water Project, Tyler Daynes, Nathan Hall, Joe West

Civil and Environmental Engineering

• Tuni Grande is a small farming community in Pucara Peru with a population of 250 people

• Residents of Tuni Grande receive approximately 3 gallons of water per person per day

• The water is highly contaminated with arsenic. Concentrations reach as high as 50 μg/L

• The goal of this project was to provide the people of Tuni Grande a reliable and clean water source

Ussynthetic: Building 4, Simon Barth, Matt Graham, Jacob Luebke, Joseph Osguthorpe, Benjamin Story

Civil and Environmental Engineering

US Synthetic is a synthetic diamond manufacturing company located in Orem, Utah. Over the last ten years, US Synthetic has nearly doubled its employee count and annual revenue. In 2011, US Synthetic added a third building to its campus to increase its production of synthetic diamonds.

Building 3 was designed and built to be connected to a future building. With company growth continuing as expected, US Synthetic contracted Diamond Engineering to design Building 4.

Diamond Engineering’s design of Building 4 will offer the client nearly 40,000 square feet of additional administrative and production space. Building 4 will tie into Building …

Usu Steel Bridge Design, Jordan Browning, Ryan Devitt, Adam Lambert, Beau Petersen, Dallin Polson, Colin Steele, Taylor Vaughn

Civil and Environmental Engineering

Utah State University Steel Bridge (USSB) has designed a bridge to compete at the American Institute of Steel Construction (AISC) Student Steel Bridge Competition. The design process involves the analysis of many bridge alternatives to determine the most cost-effective bridge design. USSB analyzed both an under-span and over-arch bridge design based on weight, number of members, ease of fabrication, ease of construction, and vertical deflection. USSB found the over-arch bridge design to be the recommended alternative because of the minimal deflection it experiences under load compared to an under-span bridge.

USSB completed in-depth analysis using RISA 3D to design two …

Waste Management Of Highway Right Of Way Areas In Southeast Georgia, David M. Penn Ii

College of Graduate Studies: Theses & Dissertations

Maintenance of highway right of way (ROW) areas has become problematic during the last several years due to the high cost, and little to no economic return associated with disposing vegetation waste that is continuously generated on all highways and interstates across the state of Georgia. The Georgia Department of Transportation (GDOT) was interested in evaluating the feasibility of replacing ROW vegetation of highways throughout the state with high-value alternatives such as switchgrass (Panicum virgatum L. ‘Alamo’), big bluestem (Andropogon gerardii) and woodland sunflower (Helianthus divaricatus). Preliminary objective involved measuring and mapping SOC and soil N concentrations in the highway …

An Analysis Of Hydroacoustic Transmission Loss Associated With Marine Pile Driving, Jonathan Paul Berube

UNF Graduate Theses and Dissertations

There has been a growing concern in recent years about the effects of anthropogenic noise due to marine pile driving on underwater wildlife. Current guidelines for mitigating hydroacoustic effects associated with these events are based upon relatively simple transmission loss formulations. The advantage to these guidelines is that computing transmission loss using their prescribed methods is not labor intensive, but their disadvantage is that they may not take all variables into account. Because of this, it may be possible to improve transmission loss computations. To better-characterize marine pile driving sound transmission loss, a unique in-water instrumentation system was developed. This …

The Nola Development: Stormwater Management And Green Alternative Designs, Davis P. Odle

Honors Theses

In the design for any development, the management of storm and wastewater is crucial in creating a viable product. The NOLA complex is a development in Oxford, MS that consists of residential as well as commercial units. The stormwater management systems designed for this facility include: an underground storage device, separate ductile iron pipes for the stormwater and wastewater outflows, a rain garden for green alternative storage. The underground storage system is designed for the 500-year storm and to fit under the southwest parking lot on the site. The stormwater outflow pipe will be designed for the 100-year storm, while …

Notched Hollow Square Section Steel Column Buckling, Zia Razzaq, Solomon Tecleab

Civil & Environmental Engineering Faculty Publications

Presented in this paper is an outcome of a study to assess the effect of section loss in the form of longitudinal notches on the buckling load of hollow square section steel columns. The theoretical study includes buckling load estimates based on both an iterative equilibrium as well as a non-iterative energy approach. Buckling loads based on sample laboratory experiments are also presented. The study shows that the presence of a notch can significantly reduce the axial load-carrying capacity of a steel column.

Airfield Infrastructure Management Using Network-Level Optimization And Stochastic Duration Modeling, Mohamadhossein Noruzoliaee, Bo Zou

Civil Engineering Faculty Publications

This paper proposes a facility-specific modeling approach to plan maintenance and rehabilitation (M&R) activities on a network of airport runway pavement facilities. The objective of the modeling approach is to minimize system M&R cost while recommending M&R activities for each runway pavement facility over a planning horizon. To do so, pavement condition forecast is derived from estimating stochastic duration models which capture the inherent uncertainty and dynamics in pavement deterioration and impacts of exogenous factors. Building on the pavement condition forecast, a network optimization-based M&R planning framework is developed which accounts for the interdependence of M&R activities among facilities as …

Wind Load Analysis Of A High-Rise Building By Computational Fluid Dynamics, Canh Thiet Phung

Chulalongkorn University Theses and Dissertations (Chula ETD)

As new buildings become taller due to limited land area, often irregular in shapes for esthetics and some design constraints, wind load formula provided in design codes/standards cannot be applied because of the limitations. Wind tunnel test (WTT) is thus the suggested approach to obtain appropriate wind load for the design of such buildings. However, WTT is costly and time-consuming as it often requires much preparation of the small-scale model of the target building, instrumentation, and numerous realistic blocks of surrounding buildings (SBs). In this study, the CFD's accuracy will be evaluated by comparing its results to WTT by a …

Shear Wave Velocity Measurement Of Bangkok Clay Under Triaxial Testing With Various Stress Paths, Sirichai Pethrung

Chulalongkorn University Theses and Dissertations (Chula ETD)

Orientation paths of shear wave velocity for clayey soil subjected to multiple triaxial loading tests are dependent on complicated factors direction of stresses, void ratio, coefficient of earth pressure at rest, etc. However, most suggested the mean effective stress could provide a suitable correlation as well. In the present study, an identify the shear wave velocity under triaxial undrained small loading-unloading test , monotonic triaxial drained compression test , triaxial drained loading-unloading test , triaxial stress control test , drained triaxial extension , and undrained triaxial extension measured using the bender elements was presented. These results are indicated that the …

Seismic Enhancement Of Reinforced Concrete Columns With Lap Splices Using External Steel Collars, Pochara Kruavit

Chulalongkorn University Theses and Dissertations (Chula ETD)

This research investigated the behavior of reinforced concrete (RC) columns with lap splices and mechanical splices. The study conducted the full-scale test and predicted a lateral load capacity using the proposed numerical model. The test configuration was a cantilever column subjected to a cyclic lateral loading and a constant gravity load. The tested specimens consisted of the RC column without lap splices, RC columns with spliced reinforcement including lap splices and mechanical splices, and RC column with lap splices strengthened by external steel collars. The experimental result indicated that the lateral load capacity of the RC column with mechanical splices …

Modified Response Spectrum Analysis For Computing Seismic Demands Of Multi-Tower Building Sharing A Common Podium, Tarek Youssef

Chulalongkorn University Theses and Dissertations (Chula ETD)

To design irregular tall buildings, performance-based design (PBD) approach, which requires nonlinear response history analysis (NLRHA), is the most accurate method. However, PBD approach is not always used in the current design practice because of its complexity, and as allowed in ASCE 7-16, design engineer can use code-based approach such as response spectrum analysis (RSA) procedure. This paper aims to investigate the accuracy of RSA procedure when applied to irregular tall buildings, and in particular for multi-tower buildings sharing a common podium. Also, a modified response spectrum analysis (MRSA) procedure previously proposed for computing shear demand in regular tall buildings, …

A Study On Intermediate Debonding For Steel Beams Strengthened With Fiber Reinforced Polymer Plates, Tosporn Prasertsri

Chulalongkorn University Theses and Dissertations (Chula ETD)

There are limited previous works focusing on the occurrence of intermediate debonding in steel beams strengthened with fiber reinforced polymer (FRP) plates. Tested beams in the past experiments invoked an intermediate debonding by creating notch in steel beams. An anchorage system at FRP termination points was installed on some tested beams in literature. This research uses an initial bond defect to induce an intermediate debonding at the FRP-steel interface. The bond behavior of FRP-steel interface was investigated through the FRP-steel joints under the single lap shear testing. A four-point bending test was conducted to examine the flexural properties of FRP-strengthened …

An Application Of Line Of Balance And Building Information Modeling For Optimal Resource And Schedule: A Case Study Of An Elevated Highway Construction, Thanakon Uthai

Chulalongkorn University Theses and Dissertations (Chula ETD)

Project scheduling is an essential tool to support construction operations completing the project under limited time and cost. The linear infrastructure project such as elevated highway construction involves a large scale of working area and complexity of management. Recently, schedules are planned manually based on planners’ experience and intuition which may consume time and lead to human-errors. Moreover, the presentations of schedule by using the existing methods dose not cover the overview of projects in various aspects. The objective of this research is to establish an application of Line of Balance (LOB) and Building Information Modeling (BIM) for optimal resource …

Fundamental Solutions Of Multi-Layer Elastic Media With Couple Stress Theory, Wipavee Wongviboonsin

Chulalongkorn University Theses and Dissertations (Chula ETD)

This thesis presents fundamental solutions of a two-dimensional, elastic, multi-layered medium under surface loadings by taking the influence of material micro-structure into account. An underlying mathematical model for simulating such small-scale influence is established within the continuum-based framework via the well-known couple stress theory. For each material layer, the generalized Navier’s equation governing the displacement field is established and the method of Fourier integral transform is applied to derive its general solution in a transformed space. A set of boundary conditions and the continuity of fields along the material interfaces are enforced to obtain a system of linear algebraic equations …

The Performance Of Automatic Adaptive Edge-Based Smoothed Finite Element Method In Engineering Mechanics Applications, Vu Hoang Le

Chulalongkorn University Theses and Dissertations (Chula ETD)

The thesis investigates the performance of an edge-based smoothed finite element method (ES-FEM) combined with an automatic mesh refinement (AMR) algorithm to provide the solutions of in-plane elastic engineering mechanics applications. The ES-FEM adopts a strain smoothing technique over the edges adjoining the two adjacent triangular-shape meshes, whilst a layer of singular yet compatible five-node elements in addition to standard three-node ES-FEs can be employed to overcome the problems associated with stress singularity. The proposed framework enables the effective model construction of realistic engineering structures with complex geometry at modest computational resources. The AMR algorithm adopts the newest node bisection …

Strength Analysis Of Concrete-Encased Cellular Steel Columns, Worakarn Anuntasena

Chulalongkorn University Theses and Dissertations (Chula ETD)

This research investigates the compression behavior of bare cellular steel columns and concrete-encased cellular steel (CECS) columns subjected to concentric and eccentric loadings. First, the experimental study of the cellular steel and CECS columns was conducted in the laboratory. For the cellular steel columns subjected to concentric loading, the failure mode of the bare cellular steel columns was local buckling at both web and flanges at the hole section. All cellular steel columns exhibited yielding and hardening behavior. The cellular columns had the average yield loads less than the parent column by 15 %. For the CECS and CES columns …

การจัดการวัฏจักรไนโตรเจนและฟอสฟอรัสในระบบอควาโปนิกส์, ศิริวณี สุภาจารุวงศ์

Chulalongkorn University Theses and Dissertations (Chula ETD)

การวิจัยนี้มีวัตถุประสงค์เพื่อศึกษาบทบาทของกระบวนการไนตริฟิเคชันในระบบอควาโปรนิกส์ โดยแบ่งการทดลองออกเป็น 3 ส่วน ได้แก่ 1) ศึกษาอัตราการใช้แอมโมเนียและไนเตรทของผักสลัดกรีนโอ๊ค 2) ศึกษาการออกแบบและการทางานของส่วนบำบัดไนตริฟิเคชันสาหรับระบบเลี้ยงสัตว์น้ำแบบปิด และ 3) ศึกษาการประเมินประสิทธิภาพการบำบัดสารประกอบอนินทรีย์ไนโตรเจนและฟอสฟอรัสในระบบเลี้ยงสัตว์น้าแบบปิดที่ทางานร่วมกับระบบอควาโปนิกส์ที่มีและไม่มีการติดตั้งส่วนบำบัดไนตริฟิเคชัน จากการทดลองพบว่า ผักสลัดกรีนโอ๊คสามารถดูดซึมได้ทั้งแอมโมเนียและไนเตรทไปใช้ในการเจริญเติบโต อย่างไรก็ตามพืชจะเลือกใช้แอมโมเนียก่อนไนเตรท ทาให้การดูดซึมไนเตรทสามารถพบได้หลังจากที่แอมโมเนียในระบบหมดลง สำหรับการเพิ่มการสะสมตัวของไนเตรทในระบบเลี้ยงสัตว์น้ำแบบปิดที่ทำงานร่วมกับระบบอควาโปนิกส์สามารถทำได้โดยการติดตั้งส่วนแยกตะกอนและส่วนบำบัดไนตริฟิเคชันด้วยตัวกรองชีวภาพแบบเคลื่อนที่ลงในชุดทดลอง จากการทดลองพบว่าระบบมีอัตราการบำบัดแอมโมเนียเท่ากับ 1.09 มก./ล. และเกิดการเติมอากาศอย่างสมบูรณ์เพื่อเพิ่มประสิทธิภาพการบำบัดไนตริฟิเคชัน โดยเป็นไปตามความคาดหมายว่าในระบบที่มีการติดตั้งส่วนบำบัดไนตริฟิเคชันพบความเข้มข้นของไนเตรทสูงกว่า อย่างไรก็ตามในการเดินระบบเลี้ยงสัตว์น้ำแบบปิดร่วมกับระบบอควาโปนิกส์ในระยะยาว พบว่าการบำบัดไนตริฟิเคชันที่เกิดขึ้นตามธรรมชาติในบ่อเลี้ยงปลาและรางปลูกผักเพียงพอที่จะทำให้เกิดกระบวนการบำบัดอย่างสมบูรณ์เมื่อทำการเดินระบบประมาณ 20 วัน

Redesign Of 900 South: 900 East To 1300 East In Salt Lake City, Ut, Kam Eslinger, Josh Fallon, Tom Hill, Jackson Sagers, Seth Thompson

Civil and Environmental Engineering

The purpose of this project was to improve the current road conditions found at 900 South, from 900 East to 1300 East in Salt Lake City, Utah. Salt Lake City’s three main goals for this project included:

• Improvement of the current road structure
• Redesign of the five-way intersection
• Addition of a separate bicycle path

ประสิทธิภาพและจลนพลศาสตร์ของถังปฏิกรณ์ไร้อากาศชนิดฟลูอิดไดซ์เบดแบบไม่เวียนน้ำที่ใช้พีวีเอเจลเป็นตัวกลาง, ธนพงศ์ อุปถัมภานนท์

Chulalongkorn University Theses and Dissertations (Chula ETD)

งานวิจัยนี้ศึกษาประสิทธิภาพของถังปฏิกรณ์ชีวภาพไร้อากาศฟลูอิดไดซ์เบดแบบไม่เวียนน้ำที่ใช้พีวีเอเจลเป็นตัวกลางในระบบ ทำการทดลองระดับปฏิบัติการด้วยถังปฏิกรณ์ขนาด 4.58 ล. ความสูง 2 ม. จำนวน 4 ชุดการทดลอง รองรับค่าอัตราภาระสารอินทรีย์แตกต่างกัน 5, 15, 25 และ 40 กก.ซีโอดี/ลบ.ม.-วัน และแปรค่าระยะเวลากักเก็บน้ำ 4.4, 2.93, 2.2 และ 1.1 ชม. ทั้งนี้เม็ดพีวีเอเจลในถังปฏิกรณ์ถูกปรับลดขนาดให้อยู่ในช่วง 500-1,000 ไมครอนเพื่อให้เหมาะสมกับระบบฟลูอิดไดซ์เบด โดยทั้งลักษณะโครงสร้างภายในและความถ่วงจำเพาะยังคงใกล้เคียงกับตัวกลางต้นแบบ เริ่มต้นเดินระบบการทดลองทั้ง 4 ชุดด้วยอัตราภาระสารอินทรีย์ 5 กก.ซีโอดี/ลบ.ม.-วัน ระยะเวลากักเก็บน้ำ 4.4 ชม. พบว่าทุกถังปฏิกรณ์ใช้เวลา 89 วันในการเข้าสู่สภาวะสมดุล มีร้อยละการบำบัดสารอินทรีย์มากกว่า 80 เมื่อแปรค่าอัตราภาระสารอินทรีย์เข้าระบบและลดระยะเวลากักเก็บน้ำในถังปฏิกรณ์เป็น 2.93, 2.2 และ 1.1 ชม. ตามลำดับ ทุกชุดการทดลองยังคงร้อยละการบำบัดสารอินทรีย์มากกว่า 80 ยืนยันถึงประสิทธิภาพของระบบฟลูอิดไดซ์เบดไร้อากาศแบบไม่เวียนน้ำที่ใช้พีวีเอเจลเป็นตัวกลางสามารถทำงานได้ดีแม้ลดระยะเวลากักเก็บน้ำลงถึง 4 เท่า และอัตราภาระสารอินทรีย์สูงถึง 40 กก.ซีโอดี/ลบ.ม.-วัน โดยมีอัตราการผลิตก๊าซชีวภาพสูงสุดเท่ากับ 93.80 ล.ก๊าซชีวภาพ/วัน คิดเป็นความสามารถในการแปลงสารอินทรีย์เป็นก๊าซชีวภาพเฉลี่ยเท่ากับ 0.55±0.10 ล.ก๊าซชีวภาพ/ก.ซีโอดีบำบัด โดยมีค่าคงที่ปฏิกิริยาอันดับหนึ่งเท่ากับ 41.72 วัน-1 ที่ระยะเวลากักเก็บน้ำ 4.4 และ 2.93 ชม. ความเข้มข้นครึ่งปฏิกิริยาเท่ากับ 0.09 ก./ล. และอัตราการบำบัดสูงสุด 42.11 ก./ล.-วัน ที่ระยะเวลากักเก็บน้ำ 2.2 และ 1.1 ชม. เมื่อติดตามการเปลี่ยนแปลงกลุ่มประชากรจุลินทรีย์ในถังปฏิกรณ์ พบว่า Methanosarcinar จะมีปริมาณเพิ่มมากขึ้นตามความเข้มข้นกรดอินทรีย์ที่สะสมในระบบ ตรงกันข้ามกับ Methanosaeta ที่จะลดลงเมื่อกรดเพิ่มขึ้น จึงสรุปได้ว่าพีวีเอเจลสามารถใช้เป็นตัวกลางในถังปฏิกรณ์ไร้อากาศชนิดฟลูอิดไดซ์เบดแบบไม่เวียนน้ำได้ดี ทุกสภาวะของการเดินระบบสามารถบำบัดสารอินทรีย์ ได้อย่างมีประสิทธิภาพ ทั้งนี้เมื่อคำนวณค่าจลนพลศาสตร์จากความสามารถในการบำบัดสารอินทรีย์ที่สภาวะเหล่านั้นร่วมกับลักษณะการไหลของน้ำภายในถังปฏิกรณ์ จะได้สมการคำนวณที่ประยุกต์ใช้กับระบบบำบัดน้ำเสียที่มีรูปแบบใกล้เคียงกันได้

Impacts And Adaptive Measures For Groundwater Use In The Mekong Delta. Case Study : Tra Vinh Province, Tuan Pham Van

Chulalongkorn University Theses and Dissertations (Chula ETD)

Because of the rapid growth of population and fast economic development in the Vietnamese Mekong Delta (VMD), the surface water resources are unable to meet these demands and groundwater is also over-abstracted. Groundwater depletion and saline water intrusion become the main problems that threaten drinking water supplies, farming systems, and livelihoods in the delta, especially coastal areas. It is necessary to provide a fully comprehensive picture of groundwater use (GWU) and its impact issues In Tra Vinh Province, a coastal province of VMD, dependency on GW increases from north to south which has a strong relation with availability of freshwater …