Open Access. Powered by Scholars. Published by Universities.®
- Discipline
-
- Natural Resources Management and Policy (2630)
- Earth Sciences (2540)
- Natural Resources and Conservation (2118)
- Hydrology (2083)
- Life Sciences (1922)
-
- Engineering (1698)
- Environmental Monitoring (1686)
- Oceanography and Atmospheric Sciences and Meteorology (1650)
- Social and Behavioral Sciences (1604)
- Civil and Environmental Engineering (1484)
- Law (1334)
- Environmental Indicators and Impact Assessment (1311)
- Water Law (1152)
- Public Affairs, Public Policy and Public Administration (1135)
- Natural Resource Economics (1106)
- Fresh Water Studies (1096)
- Sustainability (1083)
- Natural Resources Law (973)
- Environmental Health and Protection (935)
- Environmental Law (879)
- Environmental Policy (862)
- State and Local Government Law (779)
- Agriculture (693)
- Other Environmental Sciences (628)
- Climate (613)
- Animal Sciences (588)
- Soil Science (544)
- Institution
-
- University of Nebraska - Lincoln (1647)
- University of Colorado Law School (1207)
- Utah State University (822)
- University of Arkansas, Fayetteville (547)
- City University of New York (CUNY) (518)
-
- Department of Primary Industries and Regional Development, Western Australia (507)
- University of Kentucky (276)
- University of Nevada, Las Vegas (254)
- Portland State University (217)
- University of New Mexico (110)
- University of South Florida (99)
- Old Dominion University (76)
- Air Force Institute of Technology (74)
- Nova Southeastern University (74)
- Bridgewater State University (72)
- SIT Graduate Institute/SIT Study Abroad (63)
- Texas A&M University-San Antonio (58)
- Edith Cowan University (51)
- University of Southern Maine (51)
- William & Mary Law School (51)
- Purdue University (49)
- Bemidji State University (44)
- Colby College (42)
- University of Central Florida (42)
- University of Massachusetts Boston (42)
- United Arab Emirates University (38)
- South Dakota State University (32)
- California State University, San Bernardino (31)
- Chapman University (31)
- Central Washington University (29)
- Keyword
-
- 2014 International Conference on Hydroinformatics HIC (464)
- Water quality (446)
- United States (356)
- Groundwater (352)
- Western Australia (345)
-
- Colorado (258)
- Drought (249)
- Water (241)
- Salinity (190)
- Climate change (188)
- California (178)
- Natural resources (163)
- Agriculture (162)
- Irrigation (162)
- Hydrology (160)
- West (160)
- Water supply (154)
- New Mexico (136)
- Utah (134)
- Conservation (125)
- Wyoming (125)
- Water management (119)
- Arizona (118)
- Water rights (110)
- Arkansas (103)
- Hydrogeology (100)
- Climate (99)
- Land use (99)
- Surface water (98)
- Sustainability (97)
- Publication Year
- Publication
-
- Reports (553)
- International Conference on Hydroinformatics (464)
- Arkansas Water Resources Center Technical Reports (362)
- Water Current Newsletter (296)
- Resource management technical reports (219)
-
- United States Agricultural Commodities in Drought Archive (219)
- School of Natural Resources: Dissertations, Theses, and Student Research (213)
- KWRRI Research Reports (202)
- Nebraska Cooperative Fish and Wildlife Research Unit: Staff Publications (166)
- National Drought Mitigation Center: Faculty Publications (136)
- Books, Reports, and Studies (113)
- Daugherty Water for Food Global Institute: Faculty Publications (109)
- Theses and Dissertations (108)
- Journal of the Department of Agriculture, Western Australia, Series 4 (103)
- Graduate Theses and Dissertations (95)
- Electronic Theses and Dissertations (85)
- USF Tampa Graduate Theses and Dissertations (80)
- UNLV Theses, Dissertations, Professional Papers, and Capstones (78)
- Publications (WR) (76)
- Allocating and Managing Water for a Sustainable Future: Lessons from Around the World (Summer Conference, June 11-14) (74)
- Watershed Sciences Faculty Publications (73)
- Nebraska Water Center: Faculty Publications (70)
- The OTEC Liaison (70)
- DroughtScape: Quarterly Newsletter of the National Drought Mitigation Center (2007–2023) (68)
- Dissertations and Theses (67)
- United States Geological Survey: Water Reports and Publications (67)
- High Plains Regional Climate Center: Staff Publications (64)
- Water Resources Professional Project Reports (61)
- Independent Study Project (ISP) Collection (56)
- Resource Law Notes: The Newsletter of the Natural Resources Law Center (1984-2002) (53)
- Publication Type
Articles 1621 - 1650 of 8193
Full-Text Articles in Water Resource Management
Attitudes, Behavior, And Archetypes In The Clackamas River Basin: A Model Of Water Customer Analysis And Outreach For Watershed Protection And Conservation, Daniel Close Larson
Attitudes, Behavior, And Archetypes In The Clackamas River Basin: A Model Of Water Customer Analysis And Outreach For Watershed Protection And Conservation, Daniel Close Larson
Dissertations and Theses
Fresh water resources around the globe are under threat of diminishing supply and quality due to rapid population growth, climate change, drought, and waste. This dissertation aims to address the protection of fresh water at the source, the tap, and how water customer attitudes influence protection and conservation using a watershed-wide lens. Using the Clackamas River Watershed which resides within the Portland Metropolitan Area (PMA), I seek to investigate water customer attitudes towards a source water protection program and their willingness to pay to support such an endeavor, attitudes and behaviors that result in household water conservation, and an exploration …
Shale Play: Poems And Photographs From The Fracking Fields By Julia Spicher Kasdorf And Steven Rubin, Kelly Shepherd
Shale Play: Poems And Photographs From The Fracking Fields By Julia Spicher Kasdorf And Steven Rubin, Kelly Shepherd
The Goose
Review of Julia Spicher Kasdorf and Steven Rubin's Shale Play: Poems and Photographs from the Fracking Fields
Incorporating Antecedent Soil Moisture Into Streamflow Forecasting, Abdoul Oubeidillah, Glenn Tootle, Thomas Piechota
Incorporating Antecedent Soil Moisture Into Streamflow Forecasting, Abdoul Oubeidillah, Glenn Tootle, Thomas Piechota
Mathematics, Physics, and Computer Science Faculty Articles and Research
This study incorporates antecedent (preceding) soil moisture into forecasting streamflow volumes within the North Platte River Basin, Colorado/Wyoming (USA). The incorporation of antecedent soil moisture accounts for infiltration and can improve streamflow predictions. Current Natural Resource Conservation Service (NRCS) forecasting methods are replicated, and a comparison is drawn between current NRCS forecasts and proposed forecasting methods using antecedent soil moisture. Current predictors used by the NRCS in regression-based streamflow forecasting include precipitation, streamflow persistence (previous season streamflow volume) and snow water equivalent (SWE) from SNOTEL (snow telemetry) sites. Proposed methods utilize antecedent soil moisture as a predictor variable in addition …
Scenes From The Swale: Investigating Spatial And Temporal Dimensions Of Nitrogen Cycling In Urban Stormwater Bioretention Facilities, Erin Nicole Looper
Scenes From The Swale: Investigating Spatial And Temporal Dimensions Of Nitrogen Cycling In Urban Stormwater Bioretention Facilities, Erin Nicole Looper
Dissertations and Theses
Urban development is transforming landscapes at unprecedented rates. Human activities and landscape modifications associated with urbanization extensively increase hydrologic demands and modify natural hydrologic systems; consequently, population growth occurring in urban areas increases pressure on water resources. Urban aquatic ecosystems are vulnerable to impacts associated with increased connectivity with urban surfaces and hydrologic changes that initiate long-term changes in receiving waterbodies. Nitrogen (N) loading from urban and suburban catchments to receiving surface waters can lead to impairment of aquatic ecosystems and is a concern in many cities with water quality issues. To improve urban water quality, cities are increasingly adopting …
Umphlett Qci June 2019, Natalie Umphlett
Umphlett Qci June 2019, Natalie Umphlett
High Plains Regional Climate Center: Staff Publications
Highlights for the Basin
Temperature and Precipitation Anomalies
Soil Moisture Conditions
Delayed/Prevented Planting
Impacts to Cattle
Damage to Infrastructure
Temperature
Precipitation
Fouling And Aging In Membrane Filtration : Hybrid Afm-Based Characterization, Modelling And Reactive Membrane Design, Wanyi Fu
Dissertations
Membrane filtration has been extensively used in water and wastewater treatment, desalination, dairy making, and biomass/water separation. However, membrane fouling, aging and insufficient removal efficiency for dissolved organic matters remain major challenges for wider industrial applications. In order to tackle these challenges, this doctoral dissertation investigates mechanisms of membrane fouling and development of antifouling membrane filtration technologies. Specifically, four major research areas are explored: (i) nanoscale physicochemical characterization of the chemically modified polymeric membranes; (ii) quantitative modelling between membrane properties and membrane fouling and defouling kinetics; (iii) development of quantitative structure-activity relationships for membranes that undergo thermal and chemical aging …
Seamless Lidar Surveys Reveal Rates And Patterns Of Subsidence In The Mississippi River Delta, Celeste E. Woock
Seamless Lidar Surveys Reveal Rates And Patterns Of Subsidence In The Mississippi River Delta, Celeste E. Woock
LSU New Orleans Theses and Dissertations
Light Detection and Ranging (Lidar) data are used to report the temporal and spatial patterns of subsidence as well as the potential contributors to subsidence within the Barataria and Terrebonne Bays. In recent decades, subsidence in southeast Louisiana has become a topic of substantial and growing concern to the scientific community, the local residents, and all those invested in the region. Lidar data were acquired from the United States Geological Survey (USGS) and the LSU Center for Geoinformatics. The data has been manipulated to map the differenced Lidar, complete an instantaneous slope analysis, and determine the thickness of the Holocene …
Geomorphic Effects Of Engineered Log Structures And Response To A Catastrophic Flood Event In A Missouri Ozarks River, Joseph S. Nash
Geomorphic Effects Of Engineered Log Structures And Response To A Catastrophic Flood Event In A Missouri Ozarks River, Joseph S. Nash
Graduate Theses/Dissertations
Engineered log structures (ELSs) composed of local tree logs have been installed in river channels throughout the Pacific Northwest as a restoration technique. However, ELSs have not been tested for use in the Ozark Highlands until recently. In October 2016 the U.S. Forest Service installed four ELSs to stabilize banks along the North Fork of the White River in Ozark County, Missouri. The purpose here is to report on monitoring studies of pre- and post-restoration channel conditions and to assess geomorphic responses to floods. Over a ten-day period in April 2017 there were two bankfull floods, and on April 30, …
Riparian Resilience In The Face Of Interacting Disturbances, Alexa S. Whipple
Riparian Resilience In The Face Of Interacting Disturbances, Alexa S. Whipple
2019 Symposium
Riparian systems of the dryland western United States provide critical ecosystem functions such as diverse habitat for numerous species, flood attenuation and essential water storage in water-limited environments. These systems have experienced long term disturbance from anthropogenic activities including the grazing of livestock in dryland riparian systems and near extirpation of a keystone riparian species, Castor canadensis (beaver). However, increasing frequency of large-scale wildfires and climate change driven weather is altering the severity and scale of riparian disturbance. Beaver restoration has been gaining use to address long term riparian disturbances, yet little is understood regarding the impact of restored beaver …
A Fishy Problem: Effects Of Atlantic Salmon Farming In The Pacific Ocean, Madeleine A. Griffith
A Fishy Problem: Effects Of Atlantic Salmon Farming In The Pacific Ocean, Madeleine A. Griffith
Student Theses 2015-Present
In this report, I explore the historical, climatological, economic, and ethical issues created by the contemporary industrial salmon farming practices off Pacific coast of the United States and Canada. Chapter 1 utilizes a variety of sources from Stephen Hume’s A Stain upon the Sea to Miller’s Living in the Environment, to examine the integral part salmon plays in both freshwater and marine ecosystems, the ecosystem services salmon contribute in wild and farmed settings, and the trends in salmon consumption around the world. Chapter 2 examines the historically relevant role salmon held among indigenous societies and how that role has changed …
Water Quality Assessment Of Deer Lakes County Park Before, During And After Unconventional Shale Gas Drilling, Daniel Robinson
Water Quality Assessment Of Deer Lakes County Park Before, During And After Unconventional Shale Gas Drilling, Daniel Robinson
Electronic Theses and Dissertations
Allegheny County, Pennsylvania, signed a lease to allow unconventional natural gas extraction from Marcellus Shale beneath Deer Lakes County Park in 2014. The park has three man-made lakes and four waterways that eventually flow into the Allegheny River. Drilling commenced in early 2016, and there are now five producing wells. The park has an extensive abandoned coal mine network and several abandoned oil and gas wells. Thus, an independent water quality study was undertaken beginning in July 2015. Samples from seven different sites in the park were used to establish a water quality baseline prior to the drilling. Monthly sampling …
Unconventional Gas Extraction In Southwestern Pennsylvania: Complaints, Production, And Water Quality, Dannielle Pratt
Unconventional Gas Extraction In Southwestern Pennsylvania: Complaints, Production, And Water Quality, Dannielle Pratt
Electronic Theses and Dissertations
The dramatic rise in unconventional oil and gas extraction in Pennsylvania has presented a challenge to the Pennsylvania Department of Environmental Protection in managing regulatory required data, and the uniformity of public access via their online databases. This study analyzed over a decade of all the oil and gas complaints and unconventional gas production in Washington County. Of the 1,811 wells drilled between 2004 and 2018, 1,683 are producing, 74 are plugged, 52 regulatory inactive, and 2 abandoned. The PADEP received 10,389 complaints from 2004 to 2018. Only 2,420 of 4,489 water quality complaints were resolved within the legally required …
Development Of Digital Bathymetry Maps For Lakes Azuei And Enriquillo Using Sonar And Remote Sensing Techniques, Michael Piasecki, Mahrokh Moknatian, Fred Moshary, Jorge Gonzalez
Development Of Digital Bathymetry Maps For Lakes Azuei And Enriquillo Using Sonar And Remote Sensing Techniques, Michael Piasecki, Mahrokh Moknatian, Fred Moshary, Jorge Gonzalez
Publications and Research
This article presents an improved algorithm for optimization and development of a digital bathymetric model (DBM) for Lake Azuei (LA) (Haiti) and Lake Enriquillo (LE) (Dominican Republic) using the ANUDEM method. Both sonar data and contour lines of the lakes’ layout extracted using Landsat imagery were compiled for bathymetry development. We show that the performance of the ANUDEM method was strongly dependent on the density and irregularity of the spatial distribution of the data. Changing the resolution of the output grids and deriving auxiliary topographically corrected contours improved the ANUDEM performance and minimized the systematic errors of the method. Statistical …
An Industrial Hygiene Assessment Of Lead In Potable Water Outlets At Rowan University, Tyra Thomas, Rosemary Roberto, Thomas Boyle
An Industrial Hygiene Assessment Of Lead In Potable Water Outlets At Rowan University, Tyra Thomas, Rosemary Roberto, Thomas Boyle
Rowan-Virtua Research Day
The Office of Environmental Health and Safety (EHS) discovered lead in the water of a number of buildings on the Glassboro campus. This finding triggered the need for a comprehensive study to determine if lead was in the drinking water on the main campus.
Rowan University then partnered with an independent consultant to create a Lead Sampling Plan, collect water samples and to find a certified laboratory to provide water sample analysis.
A comprehensive plumbing survey of the campus also took place to determine how water is supplied to campus and how it is distributed to and throughout each building. …
Watering The Desert: Azraq, Public Opinion, And Environmental Post-Materialism, Wesley A. Gerard
Watering The Desert: Azraq, Public Opinion, And Environmental Post-Materialism, Wesley A. Gerard
Venture: The University of Mississippi Undergraduate Research Journal
This article focuses on physical, socioeconomic, and political changes in the community of Azraq, Jordan. Azraq, a small town in northeastern Jordan, sits atop a large aquifer that has been heavily pumped by the government for several decades in response to an increasing nationwide demand for water. This has led to large-scale transformations in not only the physical landscape surrounding the aquifer, but also in the daily lives, economic statuses, and political opinions of the people living there. My research thus fits the case of Azraq into larger academic discourse on groundwater governance, resource access, and environmentalism. I use a …
Analysis Of Hydrodynamic And Bathymetric Gradients In Canaveral National Seashore Following Living Shoreline And Oyster Restorations, David Spiering
Analysis Of Hydrodynamic And Bathymetric Gradients In Canaveral National Seashore Following Living Shoreline And Oyster Restorations, David Spiering
Electronic Theses and Dissertations
Coastal vulnerability has been gaining recognition as a critical issue, especially with the increasing predictions of sea level rise. Susceptibility to extreme events, eutrophication, and shoreline modification has left many coastal regions in a degraded state. Shoreline protection has traditionally taken the form of seawalls and offshore breakwaters which can be detrimental to both the local ecosystems and adjoining shorelines. The objective of this thesis is to analyze the hydrodynamic and bathymetric variation that occurs within Mosquito Lagoon, Florida following living shoreline and oyster reef restorations. The shoreline sites were sampled using a Before-After-Control-Impact (BACI) design and data were analyzed …
The Niobrara National Scenic River: Exploring Co-Management Through A Case Study Of The Niobrara Council, Melissa M. Mosier
The Niobrara National Scenic River: Exploring Co-Management Through A Case Study Of The Niobrara Council, Melissa M. Mosier
School of Natural Resources: Dissertations, Theses, and Student Research
In recent decades, government staff and local citizens have increasingly employed cooperative schemes of natural resource management, in lieu of more conventional, top-down approaches of addressing user conflicts as they relate to water resources. The focus of this project was on the Niobrara Council, a partnership of local, state, and federal representatives charged with cooperatively managing the reach of the Niobrara River that was federally designated under the Wild and Scenic Rivers Act in 1991. The project's purpose was to explore the cooperative framework of the Council, using the methodology outlined by Carlsson and Berkes (2005). This methodology involved investigating …
Population Dynamics Of The Freshwater Mussel Lampsilis Cardium Reintroduced In Nebraska, Lindsay M. Ohlman
Population Dynamics Of The Freshwater Mussel Lampsilis Cardium Reintroduced In Nebraska, Lindsay M. Ohlman
School of Natural Resources: Dissertations, Theses, and Student Research
The global decline of native freshwater mussels has accelerated conservation projects that preserve and restore populations, but the complex life histories among species challenges biologists in determining the most effective management strategies. This study details the conservation of plain pocketbook, a Tier I threatened mussel species in Nebraska that was artificially propagated and reintroduced into 13 sites from autumn 2016 to summer 2017. The objectives of this study were: 1) determine how handling influences mussels, and 2) evaluate mussel growth and survival following introductions.
We conducted a laboratory experiment with age-2 plain pocketbook to assess the effects of handling on …
Rating Curve Development For The Upper James Fork, Lower James Fork And Hinkle Jones Creek In The Upper Poteau River Watershed In Arkansas, Meagan O'Hare
Biological and Agricultural Engineering Undergraduate Honors Theses
Stream discharge is necessary to estimate loads and calibrate and validate watershed models. Access to long-term water quality data and discharge measurements allows for modeling of water quality changes across a watershed over time. However, discharge monitoring stations are often expensive to install and maintain, particularly in small rivers. A more cost-effective method for monitoring streamflow has been implemented in the Upper Poteau River Watershed (UPRW) in Arkansas. This method consists of an SonTek acoustic doppler instrument for measuring storm stream flow, with is combined with manual baseflow discharge measurements. The combined stormflow and baseflow measurements are combined with a …
Producer Preferences For Alternative Irrigation Practices In The Arkansas Delta, Robert Edward Rosene
Producer Preferences For Alternative Irrigation Practices In The Arkansas Delta, Robert Edward Rosene
Graduate Theses and Dissertations
We use a bivariate sample selection model to address peer network effects on participation in and/or intensity of use of land being irrigated by alternative irrigation practices in the state of Arkansas. As groundwater in the state becomes more limited, the use of scientific scheduling, flowmeters, and more efficient row crop water application systems will allow producers to better manage water resources. We find relatively large, positive relationships between belonging to a peer network of the same irrigation practice and participation in that practice. Intensity of use of alternative irrigation techniques is mostly influenced by which crop type the practice …
Selection Of Best Sites For Aquifer Storage And Recovery In The Eastern District Of Abu Dhabi Emirate, United Arab Emirates, Karim Ali Mahfouz Abdou Khalil
Selection Of Best Sites For Aquifer Storage And Recovery In The Eastern District Of Abu Dhabi Emirate, United Arab Emirates, Karim Ali Mahfouz Abdou Khalil
Theses
The Emirate of Abu Dhabi relied on groundwater as the main source of fresh water for several decades in the past. This resulted in the deterioration of the non-renewable groundwater aquifers; and thus, desalination plants have become the major source of freshwater supply in the United Arab Emirates (UAE). Diminishing natural groundwater is a serious threat to freshwater security in arid regions. Because UAE has the world’s highest per capita water consumption rate, more than 70 desalination plants have been built in the last two decades. A major concern, therefore, is the vulnerability of these desalination plants to pollution and …
Utilization Of Remote Sensing Data For Estimation Of The Groundwater Storage Variation, Gaurang Mistry
Utilization Of Remote Sensing Data For Estimation Of The Groundwater Storage Variation, Gaurang Mistry
UNLV Theses, Dissertations, Professional Papers, and Capstones
Groundwater is the most extracted raw material, with an average withdrawal rate of 982 km3 per year, where 70 percent of the total groundwater withdrawn is used for agriculture globally (Margat & van der Gun, 2013). With climate change and increased water demands in recent years, monitoring the changes in the groundwater storage is of the utmost importance. This thesis presents an analysis that determines the rates, trends, and directions where groundwater storage is going in Pakistan. It also correlates fluctuations in groundwater storage with variations in precipitation and agricultural productivity in the country. The overall objectives of this thesis …
The South Bay Water Recycling Program: An Evaluation Of Water Recycling Outcomes In Comparison To Selected Cities And Countries, Shannon Nguyen
The South Bay Water Recycling Program: An Evaluation Of Water Recycling Outcomes In Comparison To Selected Cities And Countries, Shannon Nguyen
Master's Projects
Is the South Bay Water Recycling (SBWR) program achieving its planned recycled water outcomes? This research will compare the SBWR program's 2018 recycled water data with other water reuse programs in Las Vegas, Orange County, Singapore, and Australia. The purpose of the research is to determine whether the SBWR program is achieving its goals for conserving fresh water for beneficial reuse, and how the outcomes compare with selected cities and countries.
Microgravity, Hydrological And Meteorological Monitoring Of Shallow Groundwater Aquifer In Alain (Uae), Serin Mosleh Darwish
Microgravity, Hydrological And Meteorological Monitoring Of Shallow Groundwater Aquifer In Alain (Uae), Serin Mosleh Darwish
Civil and Environmental Theses
The United Arab Emirates (UAE) is situated within an arid zone where the climate is arid, and the recharge of the groundwater is very low. However, rapid expansion, population growth and agriculture activities have negatively affected these limited water resources. The shortage of water resources has become a serious concern due to the over-pumping of groundwater to meet demand. In this study, a combination of time-lapse measurements of microgravity and depth to groundwater level in selected wells in Al-Ain city was used to estimate the variations in groundwater storage. Relative gravity measurements were acquired using the Scintrex CG-6 Autograv from …
Landuse And Soil Property Effects On Infiltration And Soil Aggregate Stability In The Lower Mississippi River Valley, Rebecca Lynn Anderson
Landuse And Soil Property Effects On Infiltration And Soil Aggregate Stability In The Lower Mississippi River Valley, Rebecca Lynn Anderson
Graduate Theses and Dissertations
Following European settlement of the Lower Mississippi River Valley (LMRV), agricultural expansion and unsustainable, agriculturally related practices have caused groundwater depletion, soil erosion, and surface water contamination by eroded sediments and sediment-bound nutrients to become major environmental threats to the region. The objective of this study was to evaluate the effects of common landuses [i.e., native prairie, deciduous forest, coniferous forest, Conservation Reserve Program (CRP) grassland, and conventional-tillage (CT) and no-tillage (NT) agriculture] on surface water infiltration and aggregate-stability-related properties [i.e., water-stable macroaggregate (WSA) size distribution, total water-stable macroaggregate (TWSA) concentration, and mean weight diameter (MWD)]. The overall infiltration rate …
Reduced Disposal Area Performance Utilizing Secondary-Treated Effluent In Profile-Limiting Soils, David A. Meints
Reduced Disposal Area Performance Utilizing Secondary-Treated Effluent In Profile-Limiting Soils, David A. Meints
Graduate Theses and Dissertations
Onsite wastewater systems dispose of primary treated effluent by utilizing the soil for final recycling and renovation of wastewater into the environment. Soil and site limitations have become a challenge to design a wastewater system and dispose of onsite wastewater using a conventional pipe and gravel design. Using secondary-treated effluent from an advanced treatment unit applied to a reduced disposal area offers an additional alternative when developing an onsite wastewater system. The objective of this study was to determine the feasibility of hydraulically loading limiting soils with secondary-treated effluent in a reduced disposal area. A reduced disposal area was constructed …
Quantifying Increased Ground Water Demand From Prolonged Drought In The East African Rift Valley, Evan A. Thomas, Joseph A. Needoba, Doris Kaberia, John Butterworth, Emily C. Adams, Phoebe Oduor, Denis Macharia, Multiple Additional Authors
Quantifying Increased Ground Water Demand From Prolonged Drought In The East African Rift Valley, Evan A. Thomas, Joseph A. Needoba, Doris Kaberia, John Butterworth, Emily C. Adams, Phoebe Oduor, Denis Macharia, Multiple Additional Authors
OHSU-PSU School of Public Health Faculty Publications and Presentations
Millions of people in the arid regions of Kenya and Ethiopia face water scarcity and frequent drought. Water resource forecasting and reliable operation of groundwater distribution systems may improve drought resilience. In this study, we examined three remote sensing data sets against in-situ sensor-collected groundwater extraction data from 221 water points serving over 1.34 million people across northern Kenya and Afar, Ethiopia between January 1, 2017 and August 31, 2018. In models containing rainfall as a binary variable, we observed an overall 23% increase in borehole runtime following weeks with no rainfall compared to weeks preceded by some rainfall. Further, …
Urban Underground Infrastructure Monitoring Iot: The Path Loss Analysis, Abdul Salam, Syed Shah
Urban Underground Infrastructure Monitoring Iot: The Path Loss Analysis, Abdul Salam, Syed Shah
Faculty Publications
The extra quantities of wastewater entering the pipes can cause backups that result in sanitary sewer overflows. Urban underground infrastructure monitoring is important for controlling the flow of extraneous water into the pipelines. By combining the wireless underground communications and sensor solutions, the urban underground IoT applications such as real time wastewater and storm water overflow monitoring can be developed. In this paper, the path loss analysis of wireless underground communications in urban underground IoT for wastewater monitoring has been presented. It has been shown that the communication range of up to 4 kilometers can be achieved from an underground …
Using Macroinvertebrates To Test The Water Quality Of Lake Nacogdoches, Emily Ivester, Hollyn Grizzaffi, Nicklaus Langlois, Augusto Conde De Frankenberg
Using Macroinvertebrates To Test The Water Quality Of Lake Nacogdoches, Emily Ivester, Hollyn Grizzaffi, Nicklaus Langlois, Augusto Conde De Frankenberg
Undergraduate Research Conference
The target of this assessment was to conduct a water quality test on Lake Nacogdoches in Nacogdoches TX. Lake Nacogdoches is operated by the city of Nacogdoches for municipal water supply and recreation. One of the tests that we ran to determine water quality was a macroinvertebrates test. To do this, we kicked up substrate to expose the organisms burrowed deep in the soil and caught them in a d-frame kick net. We then used our macroinvertebrate key to identify the organism and find the level of biodiversity in the lake. This test is essential because biodiversity affects climate stability, …
Longitudinal Study Of Lanana Creek, Bayler Barnes, Jackson T. Ortiz, Trace Washburn
Longitudinal Study Of Lanana Creek, Bayler Barnes, Jackson T. Ortiz, Trace Washburn
Undergraduate Research Conference
A longitudinal study was done to collect data on the various conditions of LananaCreek in Nacogdoches, Texas over a seven week span from September 14 to November 2, 2018. The part of the creek studies is a 3.5 mile stretch from East Austin Street to Hoya Soccer Complex, mostly located on the campus of Stephen F. Austin State University. There were 6 different testing sites selected along this expanse. Collection of samples was performed by the General Chemistry I Honors class as part of the laboratory experience. Once collected, the samples were transported back to the lab for testing. The …