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ReSource, Volume 12, 2000

ReSource magazine includes articles and notes about research at University of North Texas in various academic fields.

Date: 2000

Creator: University of North Texas

Item Type: Journal/Magazine/Newsletter

Partner: University Relations, Communications & Marketing department for UNT

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How Healthy is the Upper Trinity River?: Biological and Water Quality Perspectives

This conference report contains discussions and papers from a symposium hosted at Texas Christian University, in Fort Worth, Texas, examining the ecological health of the Upper Trinity River, and the impacts of various human activity, such as agriculture, urbanization, and waste management. The papers cover the effect of water quality on urban rivers, long-term water quality trends in the Trinity River, solutions that may improve water quality in the river, as well as biological, agricultural … more

Date: 1990

Creator: Jensen, Ric

Item Type: Book

Partner: UNT Libraries

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Water Quality: Problems in the New River and Imperial County, California

Correspondence issued by the General Accounting Office with an abstract that begins "Pursuant to a congressional request, GAO examined a number of issues concerning water quality problems in the New River and Imperial County in southern California, focusing on the: (1) types and the sources of pollutants entering the New River; (2) agencies and the organizations responsible for monitoring and regulating pollution in the New River; (3) risks to human health and the environment from water polluti… more

Date: August 5, 1999

Creator: United States. General Accounting Office.

Item Type: Text

Partner: UNT Libraries Government Documents Department

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Water Quality: Program Enhancements Would Better Ensure Adequacy of Boat Pumpout Facilities in No-Discharge Zones

A letter report issued by the General Accounting Office with an abstract that begins "Clean Water Act regulations generally prohibit boats from discharging untreated sewage but allow the discharge of treated sewage using certified marine sanitation devices. The act allows states to designate "no-discharge zones"--areas in which vessels are prohibited from discharging any sewage--if the Environmental Protection Agency (EPA) finds that adequate facilities exist in such zones for the removal and t… more

Date: May 24, 2004

Creator: United States. General Accounting Office.

Item Type: Report

Partner: UNT Libraries Government Documents Department

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Water Quality: EPA Faces Challenges in Addressing Damage Caused by Airborne Pollutants

A letter report issued by the Government Accountability Office with an abstract that begins "Atmospheric deposition of nitrogen oxides (NOx), sulfur dioxide (SO2), and mercury contributes to the impairment of the nation's waters, but the full extent is not known. For example, states provide EPA with data on the extent to which their waterbodies do not meet water quality standards, and some states have reported that some of their waterbodies are polluted because of atmospheric deposition. Howeve… more

Date: January 24, 2013

Creator: United States. Government Accountability Office.

Item Type: Report

Partner: UNT Libraries Government Documents Department

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Water Quality: Inconsistent State Approaches Complicate Nation's Efforts to Identify Its Most Polluted Waters

A letter report issued by the General Accounting Office with an abstract that begins "The Environmental Protection Agency (EPA) believes that more than 20,000 bodies of water throughout the country are too polluted to meet water quality standards. States use different approaches to identify impaired waters. This variation has led not only to inconsistencies in the listing of impaired waters but also to difficulties in identifying the total number of impaired waters nationwide and the total numb… more

Date: January 11, 2002

Creator: United States. General Accounting Office.

Item Type: Report

Partner: UNT Libraries Government Documents Department

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The Impacts and Costs of Climate Change

The effects of global climate change from greenhouse gas emissions (GHGs) are diverse and potentially very large, and probably constitute the most serious long-term environmental issue currently facing the world. This paper is prepared as task 1 of the project 'Modelling support for Future Actions - Benefits and Cost of Climate Change Policies and Measures', ENV.C.2/2004/0088, led by K.U.Leuven, Katholieke Universiteit Leuven. The paper provides a rapid review and analysis of the impacts and ec… more

Date: September 2005

Creator: Watkiss, Paul; Downing, Tom; Handley, Claire & Butterfield, Ruth

Item Type: Text

Partner: UNT Libraries

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Water Quality: Federal Role in Addressing and Contributing to Nonpoint Source Pollution

A chapter report issued by the General Accounting Office with an abstract that begins "Pursuant to a congressional request, GAO provided information on the impacts of nonpoint source water pollution and the potential costs of dealing with the problem, focusing on: (1) funding levels for federal programs that primarily address nonpoint source pollution; (2) the way Environmental Protection Agency (EPA) assesses the overall potential costs of reducing nonpoint pollution nationwide and alternative… more

Date: February 26, 1999

Creator: United States. General Accounting Office.

Item Type: Report

Partner: UNT Libraries Government Documents Department

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Water Quality: Better Data and Evaluation of Urban Runoff Programs Needed to Assess Effectiveness

A letter report issued by the General Accounting Office with an abstract that begins "The Environmental Protection Agency (EPA) considers the contaminants in storm water runoff as a significant threat to water quality across the nation. Prompted by Congress, EPA has responded with various initiatives, including the National Pollutant Discharge Elimination System Storm Water Program, which requires more than 1,000 local governments to undertake storm water management programs. Those municipaliti… more

Date: June 29, 2001

Creator: United States. General Accounting Office.

Item Type: Report

Partner: UNT Libraries Government Documents Department

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Water Quality: EPA Should Improve Guidance and Support to Help States Develop Standards That Better Target Cleanup Efforts

Testimony issued by the General Accounting Office with an abstract that begins "Water quality standards comprise designated uses and water quality criteria. These standards are critical in making accurate, scientifically based determinations about which of the nation's waters are most in need of cleanup. GAO examined the extent to which (1) states are changing designated uses when necessary, (2) EPA is assisting states toward that end, (3) EPA is updating the "criteria documents" states use to … more

Date: June 19, 2003

Creator: United States. General Accounting Office.

Item Type: Text

Partner: UNT Libraries Government Documents Department

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Water Quality: Key EPA and State Decisions Limited by Inconsistent and Incomplete Data

A chapter report issued by the General Accounting Office with an abstract that begins "Pursuant to a congressional request, GAO provided information on the Environmental Protection Agency's (EPA) National Water Quality Inventory, focusing on whether: (1) the information in EPA's National Water Quality Inventory is reliable and representative of water quality conditions nationwide; and (2) available data are sufficient to allow state officials to make key decisions about activities required by t… more

Date: March 15, 2000

Creator: United States. General Accounting Office.

Item Type: Report

Partner: UNT Libraries Government Documents Department

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Water Quality: Improved EPA Guidance and Support Can Help States Develop Standards That Better Target Cleanup Efforts

A chapter report issued by the General Accounting Office with an abstract that begins "Water quality standards are composed of designated uses and criteria. These standards are critical in making accurate, scientifically based determinations about which of the nation's waters are in need of cleanup. To assess EPA and states' actions to improve standards, the Chairman of the Subcommittee on Water Resources and Environment asked GAO to determine the extent to which (1) states are changing designa… more

Date: January 30, 2003

Creator: United States. General Accounting Office.

Item Type: Report

Partner: UNT Libraries Government Documents Department

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Water Quality: Identification and Remediation of Polluted Waters Impeded by Data Gaps

Testimony issued by the General Accounting Office with an abstract that begins "Pursuant to a congressional request, GAO discussed the adequacy of the data that the Environmental Protection Agency and the states have for making critical water quality decisions required by the Clean Water Act, focusing on: (1) the adequacy of the data for identifying waters for states' 303(d) lists; (2) the adequacy of data for developing total maximum daily loads (TMDL) for those waters; and (3) key factors tha… more

Date: February 10, 2000

Creator: United States. General Accounting Office.

Item Type: Text

Partner: UNT Libraries Government Documents Department

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Water Quality: Identification and Remediation of Polluted Waters Impeded by Data Gaps

Testimony issued by the General Accounting Office with an abstract that begins "Pursuant to a congressional request, GAO discussed the data that the Environmental Protection Agency (EPA) and the states have for making critical water quality decisions required by the Clean Water Act, focusing on: (1) the adequacy of the data for identifying waters for states' 303(d) lists; (2) the adequacy of data for developing total maximum daily loads (TMDL) for those waters; and (3) key factors that affect t… more

Date: March 23, 2000

Creator: United States. General Accounting Office.

Item Type: Text

Partner: UNT Libraries Government Documents Department

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The State of the Hudson 2009

This report describes the environmental quality of the Hudson River and its watershed, including issues such as pollution, population growth, and biodiversity. The report also describes the habitats of estuaries, watersheds, and rivers in general.

Date: 2009

Creator: New York (State). Hudson River Estuary Program.

Item Type: Text

Partner: UNT Libraries

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Effects of Water Quality, Instream Toxicity, and Habitat Variability on Fish Assemblages in the Trinity River, Texas

The Trinity River flows through the Dallas-Ft. Worth Metroplex in north central Texas where it receives effluents from numerous point sources including seven large regional wastewater treatment facilities. Historically, the Trinity River has been impacted by massive wastewater loadings which often constitute > 80% of the total river discharge during low flow periods. Normally, high mass loadings correspond to the summer months, compounding the effects of a naturally stressful period, characteri… more

Date: December 1989

Creator: Arnold, Winfred R., 1960-

Item Type: Thesis or Dissertation

Partner: UNT Libraries

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Pre-Impoundment Estimations of Nutrient Loading to Ray Roberts Lake and Prediction of Post-Inundation Trophic Status

Excessive nutrient loading of natural and artificial lakes has led, in some systems, to plethoric algal and aquatic macrophyte growth which can result in aesthetic degradation and undesirable tastes and odors. It would be advantageous to have some indication of the potential trophic status of a reservoir before it is filled. An objective of this study was to assess the water quality and nutrient loading potential of the tributaries entering Ray Roberts Lake, a large reservoir located in north c… more

Date: May 1988

Creator: Pillard, David Alan, 1958-

Item Type: Thesis or Dissertation

Partner: UNT Libraries

Development, Validation, and Evaluation of a Continuous, Real-time, Bivalve Biomonitoring System

A biological monitoring tool to assess water quality using bivalve gape behavior was developed and demonstrated. The purpose of this work was to develop methodologies for screening water quality appropriate to the goals of the watershed paradigm. A model of bivalve gape behavior based on prediction of behavior using autoregressive techniques was the foundation of the bivalve biomonitoring system. Current technology was used in developing the system to provide bivalve gape state data in a contin… more

Access: Restricted to UNT Community Members. Login required if off-campus.

Date: December 2002

Creator: Allen, H. Joel

Item Type: Thesis or Dissertation

Partner: UNT Libraries

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Water Quality Mapping on Lake Texoma USA

The primary objective of this study was to develop and evaluate a system capable of rapid, continuous collection of water quality and locational data on Lake Texoma. Secondary objectives included developing monthly distribution maps for chlorophyll-a, turbidity, and specific conductivity in Lake Texoma and investigating the spatial and temporal relationships between these common water quality indicators. A modified YSI multiprobe was used to develop a system capable of surveying the lake within… more

Date: December 2002

Creator: Mabe, Jeffrey A.

Item Type: Thesis or Dissertation

Partner: UNT Libraries

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Assessing the Spatial and Temporal Distribution of MTBE and BTEX Compounds in Lake Lewisville, Texas February 1999 - February 2000

The spatial and temporal distribution of Methyl Tertiary-Butyl Ether (MTBE) and BTEX (Benzene, Toluene, Ethylbenzene, Xylenes) compounds were assessed in a multipurpose reservoir, Lake Lewisville, Texas between February 1999 and February 2000. Concentrations of MTBE ranged from 0.0 - 16.7 mg/L. Levels of MTBE in the lake were related to watercraft. BTEX concentrations were never detected above 2.0 mg/L during the sampling period. Finished drinking water from Denton and the Upper Trinity Regio… more

Date: August 2000

Creator: Lee, Anne W.

Item Type: Thesis or Dissertation

Partner: UNT Libraries

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Spatial Analysis of Atrazine in the Elm Fork Watershed

This study assessed the water quality of the Elm Fork Watershed with regards to the herbicide Atrazine. Atrazine is a potential environmental endocrine disruptor and carcinogen. Overall, concentrations were lower than the four-quarter drinking water average of 3 µg/Lthe Maximum Contaminant Level set by the USEPA. However, three creek stations had four-quarter average concentrations greater than 3 µg/L, and virtually all samples exceeded the 0.1 µg/L standard set in Europe [1,2]. Statistically s… more

Date: May 2000

Creator: Ochandio, Mario Roberto

Item Type: Thesis or Dissertation

Partner: UNT Libraries

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Spatial and Temporal Influences of Water Quality on Zooplankton in Lake Texoma

Seventy-one aquatic species including the copepodids and nauplii were identified from Lake Texoma from August 1996 to September 1997. Zooplankton community structure, abundance and spatial and temporal distributions were compared among five lake zones delineated a priori based on chloride concentration. The zones, in order of decreasing chloride concentration, are the Red River zone (RRZ), Red river Transition zone (RRTZ), Main Lake zone (MLZ), Washita River Transition zone (WRTZ) and Washita … more

Date: May 2000

Creator: Franks, Jessica L.

Item Type: Thesis or Dissertation

Partner: UNT Libraries

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Spatio-temporal Variation of Nitrate Levels in Groundwater in Texas, 1970 to 2010

This study looks at spatial variation of groundwater nitrate in Texas and its fluctuations at 10 year increments using data from the Texas Water Development Board. While groundwater nitrate increased in the Ogallala and Seymour aquifers across the time period, the overall rate in Texas appears to be declining as time progresses. However, the available data is limited. Findings show that a much more targeted, knowledge based strategy for sampling would not only reduce the cost of water qualit… more

Date: December 2012

Creator: Rice, Susan C.

Item Type: Thesis or Dissertation

Partner: UNT Libraries

Bringing real world applications for wireless sensor networks into the classroom: Telemetric monitoring of water quality in an artificial stream [2013: Poster]

This poster discusses research on bringing real world applications for wireless sensor networks into the classroom in the context of telemetric monitoring of water quality in an artificial stream.

Date: 2013

Creator: Bunn, Zac; McEver, Mike; Seastrunk, Deliah; Fu, Shengli; Hoeinghaus, David & Gu, Yixing

Item Type: Poster

Partner: UNT College of Engineering