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Full-Text Articles in Water Resource Management

Mesonets: Mesoscale Weather And Climate Observations For The United States, Rezaul Mahmood, Ryan Boyles, Kevin Brinson, Christopher Fiebrich, Stuart Foster, Ken Hubbard, David Robinson, Jeff Andresen, Dan Leathers Jul 2017

Mesonets: Mesoscale Weather And Climate Observations For The United States, Rezaul Mahmood, Ryan Boyles, Kevin Brinson, Christopher Fiebrich, Stuart Foster, Ken Hubbard, David Robinson, Jeff Andresen, Dan Leathers

High Plains Regional Climate Center: Staff Publications

Mesoscale in situ meteorological observations are essential for better understanding and forecasting the weather and climate and to aid in decision-making by a myriad of stakeholder communities. They include, for example, state environmental and emergency management agencies, the commercial sector, media, agriculture, and the general public. Over the last three decades, a number of mesoscale weather and climate observation networks have become operational. These networks are known as mesonets. Most are operated by universities and receive different levels of funding. It is important to communicate the current status and critical roles the mesonets play. Most mesonets collect standard meteorological data …


Droughtscape, Summer 2017, National Drought Mitigation Center Jul 2017

Droughtscape, Summer 2017, National Drought Mitigation Center

DroughtScape: Quarterly Newsletter of the National Drought Mitigation Center (2007–2023)

Contents

Drought policy write shops conclude in Caribbean

Drought encroaches on Northern Plains in second quarter

Impact tool racks up submissions in second quarter

Maps on new website highlight drought effects on ag industry

Centers release new flash drought tool: QuickDRI

NDMC contributes to EU report on disaster risk management

Groups earn Climate Adaptation award for work with tribes

NDMC, ICPAC director talk collaboration on drought in Greater Horn of Africa

Up next in MENA: Drought vulnerability assessments


Water Current, Volume 49, No. 3, Summer 2017 Jul 2017

Water Current, Volume 49, No. 3, Summer 2017

Water Current Newsletter

New University competition is “Testing Ag Performance Solutions”

Summer brings research work, students, tours and farm shows


Trophic Dynamics Of Flathead Catfish In The Missouri River Bordering Nebraska, Dylan R. Turner Jul 2017

Trophic Dynamics Of Flathead Catfish In The Missouri River Bordering Nebraska, Dylan R. Turner

School of Natural Resources: Dissertations, Theses, and Student Research

Understanding the trophic dynamics of large, riverine ecosystems is complex and requires knowledge from several inputs and outputs of the ecosystem. Most riverine ecosystems have been altered in some way whether through damming, channelizing, or diverting water. The Missouri River is not immune to these anthropogenic alterations. The river has dams throughout its middle portion and is channelized from Sioux City, Iowa to its confluence with the Mississippi River. Flathead Catfish pylodictus olivarius are one of the most ecologically harmful introduced species but little research has looked at the influence native populations of Flathead Catfish have on native prey populations …


Fish And Macroinvertebrate Response To Restored Off Channel Habitats On The Lower Platte River, Nebraska, Caleb Uerling Jun 2017

Fish And Macroinvertebrate Response To Restored Off Channel Habitats On The Lower Platte River, Nebraska, Caleb Uerling

School of Natural Resources: Dissertations, Theses, and Student Research

Anthropogenic alterations to large rivers ranging from impoundments to levees have caused many rivers to no longer access the floodplain. The ecological integrity of floodplain rivers depends on the interaction between main-channel and floodplain habitats. Fish communities inhabiting floodplain habitats are often dictated by the type of habitat and conditions within that habitat. As restoration projects are undertaken it is imperative that managers understand how fish and macroinvertebrates respond to these events. We collected fish, macroinvertebrates, and habitat parameters on two restored floodplain habitats on the lower Platte River, Nebraska to answer questions about aquatic community response to floodplain restoration …


Higher Education Capacity Building In Water Resources Engineering And Management To Support Achieving The Sustainable Development Goal For Water In Pakistan, Steven J. Burian, Mercedes Ward, Tariq Banuri, M. Aslam Chaudhry, Sajjad Ahmad, Bakhshal Lashari, Rasool Bux Mahar, Davey Stevenson, Jim Vanderslice, Kamran Ansari, Munir Babar, Abdul Latif Qureshi Jun 2017

Higher Education Capacity Building In Water Resources Engineering And Management To Support Achieving The Sustainable Development Goal For Water In Pakistan, Steven J. Burian, Mercedes Ward, Tariq Banuri, M. Aslam Chaudhry, Sajjad Ahmad, Bakhshal Lashari, Rasool Bux Mahar, Davey Stevenson, Jim Vanderslice, Kamran Ansari, Munir Babar, Abdul Latif Qureshi

Civil and Environmental Engineering and Construction Faculty Research

Achieving the Sustainable Development Goals requires a multi‐pronged approach, with a key element being the development of a trained Community of Practice to sustain the advances in the relevant sectors. The engagement of higher education as a catalyst in the development and capacity building of the next generation of professionals and citizens comprising the Community of Practice is essential to meet the challenges of poverty, climate change, and clean water and to sustain those advances past 2030. This paper describes a capacity building program funded by the United States Agency for International Development to partner the University of Utah, in …


Quantifying And Modeling Surface Inflow And Groundwater Infiltration Into Sanitary Sewers In Southern Pinellas County, Fl, Megan E. Long Jun 2017

Quantifying And Modeling Surface Inflow And Groundwater Infiltration Into Sanitary Sewers In Southern Pinellas County, Fl, Megan E. Long

USF Tampa Graduate Theses and Dissertations

Following large rain events, excess flow in sanitary sewers from inflow and infiltration (I/I) cause sanitary sewer overflows (SSO), resulting in significant problems for Pinellas County and the Tampa Bay area. Stormwater enters the sanitary sewers as inflow from improper or illegal surface connections, and groundwater enters the system as infiltration through cracks in subsurface infrastructure. This pilot study was designed to develop methods to separate and quantify the components of I/I and to build a predictive model using flowmeter and rainfall data.

To identify surface inflow, daily wastewater production and groundwater infiltration patterns were filtered from the flow data, …


Analyzing Dam Feasibility In The Willamette River Watershed, Alexander Cameron Nagel Jun 2017

Analyzing Dam Feasibility In The Willamette River Watershed, Alexander Cameron Nagel

Dissertations and Theses

This study conducts a dam-scale cost versus benefit analysis in order to explore the feasibility of each the 13 U.S. Army Corps of Engineers (USACE) commissioned dams in Oregon’s Willamette River network. Constructed between 1941 and 1969, these structures function in collaboration to comprise the Willamette River Basin Reservoir System (WRBRS). The motivation for this project derives from a growing awareness of the biophysical impacts that dam structures can have on riparian habitats. This project compares each of the 13 dams being assessed, to prioritize their level of utility within the system. The study takes the metrics from the top …


Influence Of The Interaction Of Calcium Carbonate Particles With Surfactants On The Degree Of Water Pollution In Small Rivers, Petry Spataru, Francisco Fernandez, Joseph W. Sista, Tudor Spataru, Oxana Spinu, Igor Povar Jun 2017

Influence Of The Interaction Of Calcium Carbonate Particles With Surfactants On The Degree Of Water Pollution In Small Rivers, Petry Spataru, Francisco Fernandez, Joseph W. Sista, Tudor Spataru, Oxana Spinu, Igor Povar

Publications and Research

Introduction: The influence of the interaction of calcium carbonate (CaCO3) and surface-active substances (SAS; surfactants) with different chain lengths and cationic and anionic hydrophilic centers has been analyzed.

Results: Laboratory simulations indicate reduced negative influences on cationic SAS nitrification/self-purification processes in the presence of anionic species. This suggests the role of complex ionic formation [anionic SAS * cationic SAS] as a cause of this effect. UV-Vis spectra of lauryl sulfate (LS) and of cetyltrimethylammonium (CTMA), as well as of their mixtures in ratios of 2:1 and 1:1, treated by fine particles of CaCO3, display decreased amounts of SAS in analyzed …


Comprehensive Silica Removal With Ferric Compounds For Industrial Wastewater Reuse, Ehren D. Baca Jun 2017

Comprehensive Silica Removal With Ferric Compounds For Industrial Wastewater Reuse, Ehren D. Baca

Civil Engineering ETDs

Cooling towers, integrated circuit (IC) manufacture and reverse osmosis (RO) generate copious amounts of wastewater high in colloidal and reactive silica inhibiting on-site or synergistic reuse. Silica present in cooling water can reach solubility limits via evaporation and form impervious scale on heat transfer surfaces that decreases efficiency. When water is treated by RO operating at high rejection, silica forms difficult-to-remove scale on the membrane feed side in the form of glassy patches and communities of aggregate particles, inhibiting aspirations for zero liquid discharge. Current methods for silica scale mitigation include abundant dosing with chemical antiscalents or complex operating schemes. …


Design And Application Of A 3d Photocatalyst Material For Water Purification, Simon Paul Fowler Jun 2017

Design And Application Of A 3d Photocatalyst Material For Water Purification, Simon Paul Fowler

Dissertations and Theses

This dissertation presents a method for enhancement of the efficiency and scalability of photocatalytic water purification systems, along with an experimental validation of the concept. A 3-dimensional photocatalyst structure, made from a TiO2-SiO2 composite, has been designed and fabricated for use in a custom designed LED-source illumination chamber of rotational symmetry that corresponds with the symmetry of the photocatalyst material. The design of the photocatalyst material has two defining characteristics: geometrical form and material composition. The design of the material was developed through the creation of a theoretical model for consideration of the system's photonic efficiency. Fabrication …


Economic Evaluation Of Coastal Land Loss In Louisiana, Stephen R. Barnes, Craig Bond, Nicholas Burger, Kate Anania, Aaron Strong, Sarah Weilant, Stephanie Virgets Jun 2017

Economic Evaluation Of Coastal Land Loss In Louisiana, Stephen R. Barnes, Craig Bond, Nicholas Burger, Kate Anania, Aaron Strong, Sarah Weilant, Stephanie Virgets

Journal of Ocean and Coastal Economics

Louisiana has lost approximately 1,880 square miles of land over the past eighty years. Projections suggest that in a future without action, the next fifty years could result in the loss of 1,750 additional square miles of land area. As land loss continues, a large portion of the natural and man-made capital stocks of coastal Louisiana will be at greater risk of damage, either from land loss or from the associated increase in storm damage. We estimate the replacement cost of capital stock directly at risk from land loss ranges from approximately $2.1 billion to $3.5 billion with economic activity …


Umphlett Qci June 2017, Natalie Umphlett Jun 2017

Umphlett Qci June 2017, Natalie Umphlett

High Plains Regional Climate Center: Staff Publications

Highlights for the Basin

Temperature and Precipitation Anomalies

Snowpack and Streamflow

Historic Flooding in Missouri

Spring Conditions Impact Agriculture

3-Month Precipitation and Temperature Outlooks

U.S. Seasonal Drought Outlook


Wicked Water Problems: Can Network Governance Deliver? Integrated Water Management Case Studies From New Zealand And Oregon, Usa, Jacqueline Dingfelder Jun 2017

Wicked Water Problems: Can Network Governance Deliver? Integrated Water Management Case Studies From New Zealand And Oregon, Usa, Jacqueline Dingfelder

Dissertations and Theses

Integrated water management is a wicked public policy problem with no clear path to resolution. This dissertation is an in-depth qualitative comparative analysis of two collaborative governance processes created to tackle complex water problems in New Zealand and Oregon, U.S.A. Both cases convened a wide range of state and non-state actors in efforts to find common ground, build consensus for change, and develop innovative water policy solutions.

The goal of this comparative case study analysis is to gain a better understanding of collaborative network governance frameworks as applied to integrated water management and primary factors for success. The proposition posits …


Evaluation Of A Filtration Sorbent For Remediation Of Arsenic In Groundwater, Clement Do Jun 2017

Evaluation Of A Filtration Sorbent For Remediation Of Arsenic In Groundwater, Clement Do

Electronic Theses, Projects, and Dissertations

A commercially available product, PURA PhosLock, was identified and evaluated for use as a sorbent to remove dissolved arsenic (As) from drinking water. Although marketed as a product to remove phosphate in aquaria, it is composed of iron oxide hydroxide (i.e., FeO(OH)), which is also known to adsorb dissolved As species from water. Arsenic was measured using standard methods and Graphite Furnace Atomic Absorption Spectroscopy. A first rough filtration test was performed to see if the PhosLock adsorbed As well. About 50 g of PhosLock was used to filter 10 L of tap water containing 100 ppb As. No detectable …


Potential Of Rainwater Harvesting In Meeting The Domestic Outdoor Demand: A Study In Dry And Wet Regions Of The United States, Kazi Ali Tamaddun, Ajay Kalra, Sajjad Ahmad May 2017

Potential Of Rainwater Harvesting In Meeting The Domestic Outdoor Demand: A Study In Dry And Wet Regions Of The United States, Kazi Ali Tamaddun, Ajay Kalra, Sajjad Ahmad

Civil and Environmental Engineering and Construction Faculty Research

Feasibility of meeting the outdoor water demand with rainwater harvesting (RWH) was evaluated for the states of Arizona and Florida as representatives of dry and wet regions, respectively, using a system dynamic model. The potential of RWH was found to be highly sensitive to the demand of water, desert landscaping potential, and the percentage of households with RWH systems. The percentage of demand met through RWH and the storage potential of a 50-gallon rainwater barrel was found to be significant even for arid regions. The model can be used to compare among various influencing parameters of RWH systems.


Study Of Potential Integrated Management Of Water Resources In Las Vegas Valley, Haroon Stephen, Yoohwan Kim, Sajjad Ahmad May 2017

Study Of Potential Integrated Management Of Water Resources In Las Vegas Valley, Haroon Stephen, Yoohwan Kim, Sajjad Ahmad

Civil and Environmental Engineering and Construction Faculty Research

Water resource management under short term system perturbations such as storms and longer-term systemic changes caused by climate change such as droughts is a challenge when multiple agencies are involved. To address this challenge this research focuses on water management under changing climate conditions and population growth through understanding the agency water jurisdictions, management strategies, and modes of operation in Las Vegas Valley. A framework for integrated management through sharing data and models is presented that combines drinking water supply, flood control, and waste water treatment. This framework can be adopted to improve coordination among different water management agencies.


The Ability Of An Aquatic Invader To Uptake Nutrients In An Upstream Estuarine Environment: Implications For Reducing The Intensity And Frequency Of Massive Fish Kills In Florida, Melissa L. Kerr May 2017

The Ability Of An Aquatic Invader To Uptake Nutrients In An Upstream Estuarine Environment: Implications For Reducing The Intensity And Frequency Of Massive Fish Kills In Florida, Melissa L. Kerr

USF Tampa Graduate Theses and Dissertations

The purpose of this study was to assess whether nutrient absorption rates by water hyacinths are affected by low-salinity levels. In a controlled experiment, water hyacinths demonstrated the ability to absorb a significant amount of nutrients in low-saline waters while maintaining a slowed growth rate and shortened life span. Nutrient rates were reduced by an average of 36% in ammonia nitrogen and 48% in reactive phosphorus in the tanks of 4.45 parts per thousand (ppt) salinity. Growth rate in the experimental tanks of 4.45 ppt was observed at 33% slower than that of the control. The high salinity comparison tank …


Influence Of Mixing And Buoyancy On Competition Between Cyanobacteria Species In Upper Klamath Lake, Roberta Joann Brunkalla May 2017

Influence Of Mixing And Buoyancy On Competition Between Cyanobacteria Species In Upper Klamath Lake, Roberta Joann Brunkalla

Dissertations and Theses

Cyanobacterial blooms in lakes impact human health, the economy, and ecosystem health. It is predicted that climate change will promote and increase the frequency and intensity of cyanobacterial blooms due to unique physiological adaptions that allow cyanobacteria to exploit warm stable water bodies. Key cyanobacteria physiological adaptions include nitrogen fixation, buoyancy regulation and higher optimum growth temperatures. The largest uncertainty of predicting the effect of climate change is in understanding how the interactions among species will change. Adding to the ambiguity, cyanobacteria physiological adaptions can vary based on lakespecific ecotypes and can have different sensitivities to temperature. It is critical …


Coupling Hec-Ras And Hec-Hms In Precipitation Runoff Modelling And Evaluating Flood Plain Inundation Map, Balbhadra Thakur, Ranjan Parajuli, Ajay Kalra, Sajjad Ahmad, Ritu Gupta May 2017

Coupling Hec-Ras And Hec-Hms In Precipitation Runoff Modelling And Evaluating Flood Plain Inundation Map, Balbhadra Thakur, Ranjan Parajuli, Ajay Kalra, Sajjad Ahmad, Ritu Gupta

Civil and Environmental Engineering and Construction Faculty Research

The climate change and land use change have raised the challenges associated with increased runoff and flood management. The risks associated with flooding have been increasing with development in flood plain and changing climate resulting in increase in inundation of flood plain. The current study will help to evaluate the extent of flood plain in the study area – copper slough watershed (CSW) in Champaign, Illinois; utilizing the known precipitation and land use. The study of CSW is taken into account, as this is the largest watershed of Champaign City and had undergone major land use change increasing the flooding …


A Conceptualized Groundwater Flow Model Development For Integration With Surface Hydrology Model, Chao Chen, Ajay Kalra, Sajjad Ahmad May 2017

A Conceptualized Groundwater Flow Model Development For Integration With Surface Hydrology Model, Chao Chen, Ajay Kalra, Sajjad Ahmad

Civil and Environmental Engineering and Construction Faculty Research

A groundwater system model was developed and calibrated in the study area of Lehman Creek watershed, eastern Nevada. The model development aims for integrating the surface hydrologic model - precipitation runoff modeling system (PRMS) model - with the three-dimensional (3D) finite-difference model MODFLOW. A two-layer groundwater model was developed with spatial discretization of 100 x 100 m grid. The water balance was estimated with inflows of gravity drainage and initial streamflow estimated from a calibrated PRMS model, and with outflows of spring discharges, boundary fluxes, and stream base flow. A steady-state model calibration was performed to estimate the hydraulic properties. …


2d Unsteady Routing And Flood Inundation Mapping For Lower Region Of Brazos River Watershed, Manahari Bhandari, Narayan Nyaupane, Shekhar Raj Mote, Ajay Kalra, Sajjad Ahmad May 2017

2d Unsteady Routing And Flood Inundation Mapping For Lower Region Of Brazos River Watershed, Manahari Bhandari, Narayan Nyaupane, Shekhar Raj Mote, Ajay Kalra, Sajjad Ahmad

Civil and Environmental Engineering and Construction Faculty Research

Present study uses two dimensional flow routing capabilities of hydrologic engineering center's river analysis system (HEC-RAS) for flood inundation mapping in lower region of Brazo River watershed subjected to frequent flooding. For analysis, river reach length of 20 km located at Richmond, Texas, was considered. Detailed underlying terrain information available from digital elevation model of 1/9-arc second resolution was used to generate the two-dimensional (2D) flow area and flow geometrics. Streamflow data available from gauging station USGS08114000 was used for the full unsteady flow hydraulic modeling along the reach. Developed hydraulic model was then calibrated based on the manning's roughness …


Ice-Cover And Jamming Effects On Inline Structures And Upstream Water Levels, Addison Jobe, Swastik Bhandari, Ajay Kalra, Sajjad Ahmad May 2017

Ice-Cover And Jamming Effects On Inline Structures And Upstream Water Levels, Addison Jobe, Swastik Bhandari, Ajay Kalra, Sajjad Ahmad

Civil and Environmental Engineering and Construction Faculty Research

River ice cover is a reoccurring phenomenon in the Northern United States every year. Sheets and layers of ice result in a rise of water surface elevation and may lead to ice jams in a river. This research explains the modeling of a river reach through Northern Illinois containing a structural weir and how the water profile is effected during ice cover and ice jam events. The Hydraulic Engineering Center’s River Analysis System was used in conjunction with Esri ArcMap software to model a portion of the river for analysis. The study area of the Rock River flowing through Oregon, …


Multi-Scale Correlation Analyses Between California Streamflow And Enso/Pdo, Kazi Ali Tamaddun, Ajay Kalra, Sajjad Ahmad May 2017

Multi-Scale Correlation Analyses Between California Streamflow And Enso/Pdo, Kazi Ali Tamaddun, Ajay Kalra, Sajjad Ahmad

Civil and Environmental Engineering and Construction Faculty Research

El Niño Southern Oscillation (ENSO) and Pacific Decadal Oscillation (PDO) are two of the most important climate indices that influence the western U.S. hydrology significantly. This study evaluated how these two indices have influenced California streamflow over the years and determined their correlation at multiple time-scales. Data were obtained from 14 unimpaired streamflow stations of California for a study period of 63 years (i.e., 1951 to 2013). The concept of continuous wavelet transform was applied to observe the variance in each time-series at multiple time-scale bands over the years. The correlation was found to be higher in the latter half …


Precipitation And Indian Ocean Climate Variability-Acase Study On Pakistan, Kazi Ali Tamaddun, Ajay Kalra, Waqas Ahmed, Ghulam Hussain Dars, Steve Burian, Sajjad Ahmad May 2017

Precipitation And Indian Ocean Climate Variability-Acase Study On Pakistan, Kazi Ali Tamaddun, Ajay Kalra, Waqas Ahmed, Ghulam Hussain Dars, Steve Burian, Sajjad Ahmad

Civil and Environmental Engineering and Construction Faculty Research

The study evaluated the relationship between two climate variability indicators – sea- surface temperature (SST) and 500-mbar geopotential height (HGT/Z500) – and the monsoonal precipitation pattern of Pakistan. Data from 30 precipitation gauges were obtained and were analyzed over a period of 35 years from 1980 to 2014. Singular-valued decomposition (SVD) technique was used to determine the association of previous year’s SST and HGT with the current year’s monsoonal precipitation. The results indicated that the association of SST and HGT with precipitation varied depending on the lead-times selected. Multiple regions of the North Indian Ocean were identified that showed significant …


Response Of Climate Change On Urban Watersheds: A Case Study For Las Vegas, Nv, Narayan Nyaupane, Ranjeet Thakali, Ajay Kalra, Lorenzo Mastino, Marco Velotta, Sajjad Ahmad May 2017

Response Of Climate Change On Urban Watersheds: A Case Study For Las Vegas, Nv, Narayan Nyaupane, Ranjeet Thakali, Ajay Kalra, Lorenzo Mastino, Marco Velotta, Sajjad Ahmad

Civil and Environmental Engineering and Construction Faculty Research

The current research is a partnering effort between Southern Illinois University Carbondale and City of Las Vegas to assess the vulnerability to drought, extreme heat, and extreme precipitation. This study focuses on precipitation and usesdifferent climate scenarios from the high-resolution North American Regional Climate Change Assessment Program (NARCCAP) climate model data to evaluate the existing stormwater infrastructure of the Gowan watershed in the Las Vegas valley. Six NARCCAP modelsconsidered in the study have shown the Gamma distribution as the best fitted from Kolmogorov Smirnov best fit test. Delta change method is adopted to quantify the effect of climate change on …


Flood Risk Assessment Using The Updated Fema Floodplain Standard In The Ellicott City, Maryland, United States, Ranjeet Thakali, Ranjit Bhandari, Giles-Arnaud Arif-Deen Kandissounon, Ajay Kalra, Sajjad Ahmad May 2017

Flood Risk Assessment Using The Updated Fema Floodplain Standard In The Ellicott City, Maryland, United States, Ranjeet Thakali, Ranjit Bhandari, Giles-Arnaud Arif-Deen Kandissounon, Ajay Kalra, Sajjad Ahmad

Civil and Environmental Engineering and Construction Faculty Research

Every Year, flooding causes a calamitous impact on the people, economy, and environment all over the world. In recent years, the flood-related damages have been increasing in the United States regardless of several investments in the flood control measures. Floodplain mapping is an important tool for management that aids in the planning of infrastructures within the floodplain zone. With the magnifying effects of climate change on the hydrological cycle the study of floodplain is becoming a key tool in the water management. Federal Emergency Management Agency has recently updated their floodplain standard as per the presidential executive order 2015 on …


Using Wavelet To Analyze Periodicities In Hydrologic Variables, Balbhadra Thakur, Pratik Pathak, Ajay Kalra, Sajjad Ahmad, Miguel Bernardez May 2017

Using Wavelet To Analyze Periodicities In Hydrologic Variables, Balbhadra Thakur, Pratik Pathak, Ajay Kalra, Sajjad Ahmad, Miguel Bernardez

Civil and Environmental Engineering and Construction Faculty Research

The trend and shift in the seasonal temperature, precipitation and streamflow time series across the Midwest have been analyzed, for the period 1960-2013, using the statistical analyses (Mann- Kendall test with and without considering short term persistence (MK2 and MK1, respectively) and Pettitt test). The paper also utilizes a relatively new approach, wavelet analysis, for testing the existence of trend and shift in the time series. The method has the ability to decompose a time series in to lower (trend) and higher frequency components (noise). Discrete wavelet transform (DWT) has been employed in the present study with an aim to …


Streamflow Pattern Variations Resulting From Future Climate Change In Middle Tianshan Mountains Region In China, Feiyun Zhang, Lanhai Li, Sajjad Ahmad May 2017

Streamflow Pattern Variations Resulting From Future Climate Change In Middle Tianshan Mountains Region In China, Feiyun Zhang, Lanhai Li, Sajjad Ahmad

Civil and Environmental Engineering and Construction Faculty Research

In arid and semi-arid regions of North West china, glacier-melt, seasonal snowmelt and rainfall are the primary sources of flow in the rivers that originate from alpine areas. Spring and summer peak flow resulting from snowmelt and rainfall, respectively, are the main characteristics of streamflow pattern. Because of the damages caused by the spring and summer peak flow, a better understanding of the streamflow pattern variation under future climate warming is crucial. To analyze the variation of streamflow pattern under climate warming, the Kaidu River and the Manasi River watersheds in northern and southern slopes of Middle Tianshan Mountains, located …


Groundwater Vulnerability Assessment For Nitrate Pollution In The Salinas Valley Using A Modified Drastic Model, Bernadette Boyle May 2017

Groundwater Vulnerability Assessment For Nitrate Pollution In The Salinas Valley Using A Modified Drastic Model, Bernadette Boyle

Master's Projects and Capstones

Groundwater is an integral piece of California’s groundwater resources. One of the most common contaminants present in groundwater is nitrate. Nitrate contamination is often a result of agricultural land use activities on the ground surface. The study area for this analysis is the Salinas Valley Groundwater Basin, an agriculturally dominated basin in coastal California. The Salinas Valley Basin is both one of the most agriculturally productive areas of the state, as well as one of the most nitrate-contaminated basins in the state. The purpose of this research was to develop a groundwater vulnerability map for nitrate pollution in the Salinas …