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Articles 1 - 30 of 87
Full-Text Articles in Physical Sciences and Mathematics
Examining The Relationship Between Manning's Roughness Coefficient And Stage, Henry Holtkamp
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.
Analysis Of Benthic Macroinvertebrate Response To Restoration Flows And Scour In The Trinity River, Northern California, Sarah Gutierrez, Julie Avina
Analysis Of Benthic Macroinvertebrate Response To Restoration Flows And Scour In The Trinity River, Northern California, Sarah Gutierrez, Julie Avina
Cal Poly Humboldt Capstone Honor Roll
This study investigates the ecological impact of restoration flows and scouring events on benthic macroinvertebrate (BMI) communities within the Trinity River, an ecosystem historically impacted by anthropogenic activities. Central to this study is the examination of how hydrologic alterations, especially the construction of the Lewiston Dam, have influenced these vital ecological indicators. Using data collected earlier in 2023 from a current study by Benjamin King, we analyzed BMI samples from three river sites (Junction City, Pear Tree, and Lorenz Gulch), both prior to and following a major scouring event in January 2023. This paper utilizes statistical analyses, including ANOVA and …
Windblown Snow Bedforms And Their Effects On Snow Water Content Wenatchee Range, Washington, Ryan Hampton
Windblown Snow Bedforms And Their Effects On Snow Water Content Wenatchee Range, Washington, Ryan Hampton
All Master's Theses
ABSTRACT
WINDBLOWN SNOW BEDFORMS AND THEIR
EFFECTS ON SNOW WATER CONTENT
WENATCHEE RANGE, WASHINGTON
by
Ryan C. Hampton
June 2023
Windblown snow bedforms (WBSBF) are formations of distinct sizes, shapes, and patterns, resulting from the interaction of wind and snow particles. Due to the extreme nature of the formation of WBSBF, which occur in remote high elevation mountain environments during severe weather events, it makes it difficult to not only study these dramatic formations in real time but also predict their occurrence with any regularity. The purpose of this research was to 1) establish a method to actively monitor WBSBF …
Decreasing Trash In Local Creeks: A Program Evaluation Of The City Of San Jose’S Direct Discharge Trash Control Program, Lakeisha Bryant
Decreasing Trash In Local Creeks: A Program Evaluation Of The City Of San Jose’S Direct Discharge Trash Control Program, Lakeisha Bryant
Master's Projects
The entire San Francisco Bay was once a navigable waterway in the 1850s during the Gold Rush era. Large amounts of sediment from upstream erosion and mining flowed to the bay resulting in the downsizing of the bay’s square miles (Environmental Protection Agency, 2022). As a result of intense development on the bay shores and adjacent lands, the bay faces several challenges that affect its water quality and threatens aquatic ecosystems. Pesticides, mercury, metals, and pathogens are just a few substances in the bay that cause unhealthy conditions for aquatic life and threaten human health. California’s Water Resources Control Board …
Common Ground Over Common Water: Defining The Public Interest In The Milwaukee Watershed, Thomas Anthony Gentine
Common Ground Over Common Water: Defining The Public Interest In The Milwaukee Watershed, Thomas Anthony Gentine
Theses and Dissertations
My dissertation examines government and nongovernment entities’ attempts to restore and protect the use and health of the Milwaukee River and its watershed from 1960 to 2000. Under Mayor Henry Maier’s leadership, Milwaukee worked to reclaim the urban riverway to stimulate economic growth. However, state and federal representatives, after the passage of the 1965 Water Quality Act, demanded that the city government prioritize updating the combined storm and sewer system to lessen pollution in the Milwaukee River. At the same time, other groups worked to save rural areas from unplanned development and further degradation of the waterway. Influential groups included …
Characterization Of Municipal Water Sources For The Mexico-Lerma-Cutzamala Basin Region, Ian F. Hirons
Characterization Of Municipal Water Sources For The Mexico-Lerma-Cutzamala Basin Region, Ian F. Hirons
International Development, Community and Environment (IDCE)
The Mexico and Toluca Valleys in central Mexico are part of one of the most heavily populated megalopolises in the western hemisphere where consistent access to safe, affordable, and quality water sources figures to be a decisive challenge in the era of climate change. This professional project report compiles a range of statistics and information about the vital liquid for 29 municipalities located in and around the Mexico City and Toluca areas. This contribution is derived from a broader team research endeavor that seeks to gauge the impacts and adaptive processes to climate change within those regions. By doing so, …
Photocatalytic Degradation Of Organic Contaminants By Titania Particles Produced By Flame Spray Pyrolysis, Noah Babik
Photocatalytic Degradation Of Organic Contaminants By Titania Particles Produced By Flame Spray Pyrolysis, Noah Babik
Theses and Dissertations
Advanced oxidation of organic pollutants with TiO2 photocatalysts is limited due to the wide bandgap of TiO2, 3.2 eV, which requires ultraviolet (UV) radiation. When nanosized TiO2 is modified by carbon doping, charge recombination is inhibited and the bandgap is narrowed, allowing for efficient photodegradation under visible light. Here, we propose a flame spray pyrolysis (FSP) technique to create TiO2. The facile process of FSP has been successful in preparing highly crystalline TiO2 nanoparticles. Using the same procedure to deposit TiO2 onto biochar, the photocatalyst was doped by the carbonaceous material. The morphology, crystalline and electronic structure of the FSP …
Point Of Use Technologies To Increase Access To Clean Water In Rural Communities, Elena Arroway
Point Of Use Technologies To Increase Access To Clean Water In Rural Communities, Elena Arroway
Undergraduate Theses, Capstones, and Recitals
Access to clean water is an issue that many communities around the world struggle with. While large-scale efforts such as piping infrastructure have been successful, these are less effective at reaching small, rural communities. To supplement these efforts, point of use (POU) methods for water treatment can be implemented. These include boiling, chemical treatment, filters, and several additional technologies. These have all shown effectiveness in a lab setting, but their implementation in the real world, specifically in rural communities, has not been nearly as effective. In this paper, several different POU methods are evaluated for their effectiveness on a small-scale, …
Assessing Potential Of Dual Use Solar Development In New Jersey Preserved Farmlands, Gary Ryan Chapman
Assessing Potential Of Dual Use Solar Development In New Jersey Preserved Farmlands, Gary Ryan Chapman
Theses, Dissertations and Culminating Projects
The dual use of farmland and the incorporation of solar energy has the potential to maximize the net returns per acre and utilization capabilities. Land is one of the most vital and nonrenewable resources that is often solely used for one purpose. This study focuses on analyzing three objectives: 1) To explore the potential of Agrivoltaic Farming (dual use) on preserved farmland in New Jersey. 2) To estimate the Levelized Cost of Energy (LCOE) of New Jersey’s dual use potential. 3) To generate sensitivity analyses of dual use solar and farm production in New Jersey. This study analyzed New Jersey’s …
Drought Tolerant Landscaping Trends In Claremont, California, Serena Myjer
Drought Tolerant Landscaping Trends In Claremont, California, Serena Myjer
CMC Senior Theses
The environmental impacts of turf grass lawns are particularly important to consider in California, because of its unique Mediterranean climate and ongoing problems with chronic drought. While California is ideal for agriculture, recreation, and year-round living, the occurrence of drought is natural and not uncommon, evident in historical human and paleoclimate records. Drought impacts humans and wildlife including water scarcity, crop failure, water quality, reduced streamflow, and wetland availability. Diverting water from these critical sources for growing turf grass lawns is inappropriate and harmful. This project is the first analysis of landscaping patterns, trends, and changes in Claremont, California using …
Spatiotemporal Patterns In Water Yield From The Humid Puna: A Case Study In The Agrarian District Of Zurite, Perú, Wyeth Wunderlich
Spatiotemporal Patterns In Water Yield From The Humid Puna: A Case Study In The Agrarian District Of Zurite, Perú, Wyeth Wunderlich
Cal Poly Humboldt theses and projects
The humid puna is a seasonally dry alpine grass- and shrub-land biome that exists at the altitudinal limits of plant survival, hosts peat-forming wetlands known as bofedales, and yields water to streams used by small and large communities throughout the central and southern Peruvian Andes. Despite the importance of the humid puna in supplying water resources, particularly to perennial streams, few studies have quantified water yield and no studies have explored relationships between the structure of puna landscapes and spatial patterns in water yield. Zurite (population: 3,640, elevation: 3,011 m.a.s.l., annual precipitation: 855 mm) is an agrarian district in …
An Ethnography Of Wash Infrastructures And Governance In Sulphur Springs, Florida, Mathews Jackon Wakhungu
An Ethnography Of Wash Infrastructures And Governance In Sulphur Springs, Florida, Mathews Jackon Wakhungu
USF Tampa Graduate Theses and Dissertations
This dissertation describes the forces that shape the perceptions and practices in Water, Sanitation, and Hygiene (WaSH) services in the community of Sulphur Springs, Tampa, Florida. It also explores how these forces, perceptions, and practices produce adverse experiences and inequalities in water, sewer, drainage, and laundry services. This ethnographic study combines participant observation, ethnographic interviewing, freelisting, oral history, and GIS to uncover the context, experiences, and perceptions about WaSH in Sulphur Springs. The study finds that the present conditions and perceptions about WaSH are embedded into the historical contexts—especially racial segregation, the construction of the interstate, and multiple economic downturns …
Relationship Between University Student Characteristics And Water Conservation Behaviors, Matthew A. Wise
Relationship Between University Student Characteristics And Water Conservation Behaviors, Matthew A. Wise
Graduate Theses and Dissertations
Water over-consumption is a critical issue due to it being a mismanaged, and virtually finite, natural resource. In order to convey this information to the public and promote change, it is important to understand the public’s current attitude towards the topic in order to develop more targeted teaching approaches. The purpose of this study was to determine college-age students’ perceptions about water resource usage, their personal levels of active engagement in water conservation, and if any differences existed between agriculture students and non-agriculture students. This study utilized an online quantitative survey, guided by the Theory of Planned Behavior, which was …
Irrigation Design In Montana: Accommodating Varying Water Accessibility Across The Continental Divide., John Garrett Lampson
Irrigation Design In Montana: Accommodating Varying Water Accessibility Across The Continental Divide., John Garrett Lampson
Biological and Agricultural Engineering Undergraduate Honors Theses
The design work performed in this project was conducted over two summers (2018, 2019) of internship experience with the Natural Resources Conservation Service (NRCS) across the state of Montana. The first summer’s design work was based out of Glendive, MT, in Dawson County, approximately 50 kilometers from the North Dakota border. The second summer was in Missoula, MT, in Missoula County, near the Idaho border. The two areas differ significantly in topography, weather, and water availability with the main separating geographic influence being the Rocky Mountains.
This paper focuses on the design process and requirements for two farms located outside …
Drinking Water Governance For Whom? An Institutional Analysis Of Rural Drinking Water Systems In New Mexico, Tucker Colvin
Drinking Water Governance For Whom? An Institutional Analysis Of Rural Drinking Water Systems In New Mexico, Tucker Colvin
Geography ETDs
Rural community drinking water systems in New Mexico are facing many challenges, including a lack of personnel, deteriorating infrastructure, lack of funds, overly burdensome and confusing regulation, environmental concerns, and concerns over water rights. Governing agencies are creating vulnerability by making managers prioritize some issues and neglect others. Water systems designated a Mutual Domestic Water Consumers Associations are especially problematic because they are small and managed by volunteers but have as much regulatory burden as larger municipalities. I use the theory of institutional work to explain how an institution that was originally designed to help low-income and rural communities is …
Living Rivers, Cosmopolitan Activism, And Environmental Justice In The Bengal Delta, Daniel Adel
Living Rivers, Cosmopolitan Activism, And Environmental Justice In The Bengal Delta, Daniel Adel
Cal Poly Humboldt theses and projects
This thesis explores the social movements and civil society activism to protect the rivers that flow through Bangladesh—the cradle and terminal delta floodplain of the transboundary Ganges, Brahmaputra, and Meghna river systems—, as well as ways to build regional cooperation and watershed democracy in South Asia. The research drew on four overarching fields of study: environmental justice, southern environmentalism, ecological nationalism, and environmental governance. These four bodies of scholarship helped address the overarching question: how are civil society organizations analyzing and responding to the water diversions and degradation of Bangladesh’s transboundary rivers? Semi-structured interviews were conducted with civil society organizations …
Determining Water Requirements In Turfgrass Systems, Tyler Quinn Carr
Determining Water Requirements In Turfgrass Systems, Tyler Quinn Carr
Graduate Theses and Dissertations
Turfgrass lawns are commonly utilized for home and commercial applications because of the aesthetic, environmental, and recreational benefits grasses provide, but many people perceive turfgrass as solely an aesthetic benefit that requires significant water inputs. It is important to identify and use turfgrass cultivars that have known drought tolerance, and also fine-tune and throughout development. A series of field experiments were conducted to determine the water requirements of turfgrass lawn systems with the following objectives: 1) investigate differences in chronic drought resistance and irrigation recommendations among cultivars of Kentucky bluegrass (Poa pratensis L.) and tall fescue (Festuca arundinacea Schreb.) 2) …
Apartment Residents' Understanding Of And Satisfaction With Water Savings Devices, David Farmer
Apartment Residents' Understanding Of And Satisfaction With Water Savings Devices, David Farmer
Electronic Theses and Dissertations
As the human population increases, the way we use and manage our supply of drinking water becomes even more important. The purpose of this study was to determine residents’ satisfaction level of and performance rating of new water savings devices installed in their apartments. Specifically the investigation focused on ratings of shower heads, kitchen faucet aerators, bath faucet aerators, and fill valve and flapper systems.
This quantitative survey included residents at 4 apartment complexes in Tennessee using a paper questionnaire (N = 626). The participants were grouped by age, ethnicity, gender, and whether or not they had experienced both nonrestrictive …
Application Of Semi-Hydrophobic Layers To Decrease Bare Soil Evaporation, Jesse Lee Barnes
Application Of Semi-Hydrophobic Layers To Decrease Bare Soil Evaporation, Jesse Lee Barnes
UNLV Theses, Dissertations, Professional Papers, and Capstones
Evaporative water loss from bare agricultural soils is a primary area of water conservation research. Mulching is the commonly utilized method to decrease evaporative water loss. The most commonly utilized mulch is nonbiodegradable polyethylene sheeting because it tends to decrease evaporative water loss and increase crop yields more than environmentally friendly mulches. This study aimed to test the utility of sand coated with polymerized soybean oil (i.e., hydrophobic sand) as a treatment to reduce bare soil evaporation and an alternative to current practices. Evaporation rates were measured in laboratory soil columns containing both treated and untreated soils. Treatment parameters were …
Characterizing The Waters Of 6 Rivers In Upstate New York With A Focus On Physical Hydrology And Controls On Water Quality, Connor Horan
Characterizing The Waters Of 6 Rivers In Upstate New York With A Focus On Physical Hydrology And Controls On Water Quality, Connor Horan
Honors Theses
Rivers are key passageways connecting inland waters to the world’s oceans. They are responsible for the mobilization and transport of nutrients, sediments, and weathered materials. Rivers have been influential in the development of human civilization and are hubs for people and businesses to populate. As our population puts a heavier burden on these waterways, there is a need to better understand the controls on their water quality.
The overarching goal of this research is to improve our understanding of the hydrology and water resources of the Upper Hudson and Mohawk watersheds. This is critical to our understanding of the ecological …
Urban Water Demand In Arid-Regions: Modeling And Forecasting Climatic And Economic Effects, Tallen Ashley Capt
Urban Water Demand In Arid-Regions: Modeling And Forecasting Climatic And Economic Effects, Tallen Ashley Capt
Open Access Theses & Dissertations
Water demand is an ever-growing concern for many municipalities around the world and understanding the driving forces of demand is critical to ensure sustainability. The goal of this research was to develop mechanistic models of urban water demand that could be used as decision support tools for regional water managers. This Dissertation research focused on modeling water consumption in El Paso, Texas at the daily and annual time scale for use in a long-term forecast. The Dissertation is divided into three major chapters: the first two chapters describe independent models on (1) meteorological and (2) economic effects, respectively. The third …
Legislation To Reduce Microplastic Pollution : Understanding The Factors That Facilitated Passage Of The Federal Microbead-Free Waters Act Of 2015, Alyson Kelly Northrup
Legislation To Reduce Microplastic Pollution : Understanding The Factors That Facilitated Passage Of The Federal Microbead-Free Waters Act Of 2015, Alyson Kelly Northrup
Legacy Theses & Dissertations (2009 - 2024)
The full environmental impacts of microplastic pollution in aquatic environments remain uncertain, but several detrimental effects have been documented, including adverse health effects in multiple species and the susceptibility of microplastics to adsorb toxins and leach plastic additives. Plastic microbeads from rinse-off personal care products are a source of microplastic pollution that is introduced directly into the environment through runoff, including wastewater treatment plant effluent. In December 2015, the federal Microbead-free Waters Act of 2015 banned the manufacture and sale of all rinse-off personal care products containing plastic microbeads in the United States.
Lead In Tap Water Of Public Schools Near Dayton, Ohio, Baylee Stark
Lead In Tap Water Of Public Schools Near Dayton, Ohio, Baylee Stark
Browse all Theses and Dissertations
Lead (Pb) is a human-health concern, especially with regard to exposures of children. Lead contaminated drinking water is a primary route of exposure for children; however, water sampling for Pb is voluntary in schools with a public water supply. This study examined Pb in tap water from public schools around Dayton, OH. Schools were selected to span a range of ages (construction year) and community socioeconomic status. Of the 28 schools contacted, seven responded "affirmatively" to sampling, two responded "negatively", and 19 did not respond. None of the schools that were sampled had Pb concentrations exceeding the U.S. EPA guidelines …
Sustainably Managing Groundwater - Surface Water Interactions Within The Santa Rosa Plain Basin, Rhianna Frank
Sustainably Managing Groundwater - Surface Water Interactions Within The Santa Rosa Plain Basin, Rhianna Frank
Master's Projects and Capstones
In this paper, I designed a strategy for implementation of sustainably managing groundwater-surface water interactions in the Santa Rosa Plain Basin in compliance with the requirements set forth by the Sustainable Groundwater Management Act of 2014. The research objectives for this analysis are: (1) to fully examine the requirements of the Sustainable Groundwater Management Act and the implications that implementation will have on the Santa Rosa Plain Basin, (2) to use technical data gathered regionally coupled with related policy design theory to analyze how groundwater and surface water interactions can be managed to meet the requirements set forth in this …
Single-Stage, Venturi-Driven Desalination System, Brandon Proetto
Single-Stage, Venturi-Driven Desalination System, Brandon Proetto
Mechanical & Aerospace Engineering Theses & Dissertations
Water demand is increasing at a rapid pace due to population increase, industrial expansion, and agricultural development. The use of desalination technology to meet the high water demands has increased global online desalination capacity from 47 million m^3/d in 2007 to 92.5 million m^3/d as of June 2017 [49]. Membrane and thermal processes are the two mainstream desalination categories used worldwide for desalination plants. Reverse Osmosis (RO) is the most widely used membrane process and it has become the dominant technology for building desalination plants over recent decades. Thermal distillation, however, has become less and less competitive due to its …
Application Of Ultraviolet Light Emitting Diodes For The Advanced Oxidation Of Guar Gum, Andrew W. Davenport
Application Of Ultraviolet Light Emitting Diodes For The Advanced Oxidation Of Guar Gum, Andrew W. Davenport
Theses and Dissertations
Guar Gum (GG) is one of the problematic water pollutants connected to hydraulic fracturing. There is a pressing need to investigate appropriate unit operations that can be employed to protect the aquatic environment. This study investigated the use of light-emitting diodes (LEDs) in the advanced oxidation process (AOP) of GG. Chemical oxygen demand (COD) removal provided mixed results, depending on the concentration of hydrogen peroxide (H2O2) in solution, and was between (0-95%) for H2O2-to-GG ratios between 7.0 and 176.3 g H2O2/g GG. COD removal was greatest at the …
Knowing Water: Science And The Politics Of Knowledge Production Along The Saw Kill, Carlo Diego Raimondo
Knowing Water: Science And The Politics Of Knowledge Production Along The Saw Kill, Carlo Diego Raimondo
Senior Projects Spring 2018
Beginning with globally oriented ideological constructions of water as resource, this project explores the materiality of water and how it comes to understood within our current geological era. Specifically exploring the politics of scientific knowledge production, I follow the methodological processes of the Bard Water Lab as they monitor water quality of a local stream, exploring how different apparatuses of observation are utilized in order to make a stream a legible and knowable object.
Strategies To Maintain Adequate Hotel Water Supplies, Deborah R. Popely
Strategies To Maintain Adequate Hotel Water Supplies, Deborah R. Popely
Walden Dissertations and Doctoral Studies
Hotel guests can use 2 to 3 times more water than community residents. Hotels are water-intensive businesses, and water scarcity presents a pressing problem for managers who rely on an uninterrupted supply of water to meet guests' needs and maintain profitability. Using the resource-based view (RBV) as a conceptual framework, the purpose of this qualitative multiple case study was to explore strategies that hotel managers used to successfully maintain adequate water supplies in the Spanish Canary Islands, an historically arid site and a tourism destination. Data were collected from semistructured interviews and hotel water usage reports. Yin's 5-step approach of …
Bottom-Up Adaptive Management And Stakeholder Participation For Clean Water And Healthy Soils In A Complex Social-Ecological System, Sarah Coleman
Bottom-Up Adaptive Management And Stakeholder Participation For Clean Water And Healthy Soils In A Complex Social-Ecological System, Sarah Coleman
Graduate College Dissertations and Theses
Protection of water resources in a changing climate depends on bottom-up stewardship and adaptive management. From the ground up, a vital component is maintaining soil ecosystem services that regulate water, recycle nutrients, sequester carbon, provide food, and other benefits. Interacting spatial, social, and physical factors determine agricultural and stormwater management, and their impact on water. This dissertation explores these dimensions within a complex social-ecological system. The first chapter evaluates a participatory process to elicit solutions to complex environmental problems across science, policy, and practice. The second chapter studies on-farm soil assessment and its role in informing management decisions and supporting …
Pharmaceutical Waste In Vermont: Results From A Survey On Purchasing, Use & Disposal, Christine Hart
Pharmaceutical Waste In Vermont: Results From A Survey On Purchasing, Use & Disposal, Christine Hart
Graduate College Dissertations and Theses
Pharmaceutical waste is an emerging form of waste with significant impacts on the environment. This study reports the results of a state-wide phone survey on pharmaceutical purchasing, use and disposal behavior among Vermont residents (n = 421). The objectives of this study were: 1) to compare the demographic nature of populations who purchase and use medicaton to those associated with leftover medication, and 2) to evaluate the impact of disposal behavior in Vermont and to recommend strategies to minimize pollution. The findings of this study showed that approximately 93% of survey participants reported purchasing of medication, 60% reported leftover medication …