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2004

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Articles 61 - 90 of 106

Full-Text Articles in Water Resource Management

Watershed Management To Control Pollution In The Ayuquila River, Jalisco, Mexico, Luis Manuel Martinez Rivera May 2004

Watershed Management To Control Pollution In The Ayuquila River, Jalisco, Mexico, Luis Manuel Martinez Rivera

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The Ayuquila River watershed is important to western Mexico because of its biodiversity, physiography, fisheries resources, and water production. However, human activities are continuingly affecting natural resources within the basin. Soil erosion, as result of land use change, agriculture in steep land, extensive grazing activities and forest fires; and water diversion and pollution of the Ayuquila River are two relevant issues that have affected the natural resources of this watershed.

This river system plays an important role in wildlife conservation, containing 29 fish species, of which 12 are found inside the BRSM. The River also contains nine species of crustacean, …


Waldo Lake Research In 2003, Mark D. Sytsma, John Rueter, Richard Petersen, Roy Koch, Scott A. Wells, Rich Miller, Laura Johnson, Robert Leslie Annear May 2004

Waldo Lake Research In 2003, Mark D. Sytsma, John Rueter, Richard Petersen, Roy Koch, Scott A. Wells, Rich Miller, Laura Johnson, Robert Leslie Annear

Civil and Environmental Engineering Faculty Publications and Presentations

This report summarizes the first year of an effort to develop a more complete understanding of the physical, chemical, and biological characteristics that drive the ecological processes of Waldo Lake. Modern limnology recognizes the importance of watershed processes as well as in- lake processes in lake ecosystem functioning. Therefore, the approach included consideration of watershed hydrology and forcing functions that determine hydrodynamics of the system as well physical and chemical factors that may be important in regulating primary production in the lake. Data collected since 1998 was summarized and bathymetry of the basin was mapped using state-of-the-art digital depth sounding …


Water Current, Volume 36, No. 2. Spring 2004 Apr 2004

Water Current, Volume 36, No. 2. Spring 2004

Water Current Newsletter

Contents

• June Tour Focuses on Competing Uses for Platte River Water and Basin Development by Steve Ress

• First Water Law, Policy and Science Conference Sets the Bar High by Steve Ress

• From the Director

• Meet the Faculty

• Helping Small Towns Reduce Arsenic in Drinking Water by Steve Ress

• GIS mapping tool helps officials track livestock diseases by Steve Ress

• News from the Water Sciences Laboratory

• Involve Public in Hard Decisions Regarding Science and Policy, Agency head Says by George Green

• Pederson and Graduate Student Stay Busy Chasing Waterfalls

Water News Briefs


Groundwater Study Of The Narrogin Townsite, Edward K. Crossley Mar 2004

Groundwater Study Of The Narrogin Townsite, Edward K. Crossley

Resource management technical reports

A groundwater study was carried out in the townsite of Narrogin, Western Australia, in April 2002. The study consisted of a drilling program to install a network of groundwater monitoring bores. This report contains background information for the town and its catchment, the climatic, geological and hydrogeological investigations, and conclusions on the town's salinity risk and recommendations for improved water management.


Groundwater Trends In The Central Agricultural Region, S Ghauri Mar 2004

Groundwater Trends In The Central Agricultural Region, S Ghauri

Resource management technical reports

This report provides an update of groundwater data and interpretation for each of the hydrozones of the central agricultural region in Western Australia.


Modeling A Field Application Of In Situ Bioremediation Of Perchlorate-Contaminated Groundwater Using Horizontal Flow Treatment Wells (Hftws), Peter G. Chosa Mar 2004

Modeling A Field Application Of In Situ Bioremediation Of Perchlorate-Contaminated Groundwater Using Horizontal Flow Treatment Wells (Hftws), Peter G. Chosa

Theses and Dissertations

Perchlorate contaminated groundwater is rapidly becoming a significant environmental remediation issue for the Department of Defense. In this study, an existing numerical model that simulates the operation of a Horizontal Flow Treatment Well (HFTW) system to effect the in situ biodegradation of perchlorate through the addition of an electron donor is modified to include a submodel that describes bioclogging. Bioclogging restricts flow out of the HFTW due to the accumulation of biomass directly adjacent to the well. The modified model is then applied to an existing perchlorate contaminated site that will be used for an evaluation of the HFTW technology. …


Application Of Horizontal Flow Treatment Wells For In Situ Treatment Of Mtbe-Contaminated Groundwater, Preston F. Rufe Mar 2004

Application Of Horizontal Flow Treatment Wells For In Situ Treatment Of Mtbe-Contaminated Groundwater, Preston F. Rufe

Theses and Dissertations

This study utilized a three-dimensional numerical model to evaluate the potential application of HFTWs to manage MTBE-contaminated groundwater. HFTWs consist of two dual-screened treatment wells. One well operates in an upflow mode, with MTBE-contaminated water extracted from an aquifer through a screen in the deep portion of an aquifer and injected into the aquifer through a shallow well screen, while the adjacent well operates in a downflow mode, extracting water from the shallow zone of the aquifer and injecting it into the deep zone. As the MTBE-contaminated water flows through the wells, an electron acceptor and/or another electron donor is …


Narrogin Townsite Test Pumping Results 2003, Louise Hopgood Feb 2004

Narrogin Townsite Test Pumping Results 2003, Louise Hopgood

Resource management technical reports

Test pumping of a production bore in Narrogin took place for 24 hours in August 2003. Data generated by the test pumping was analysed along with groundwater monitoring, climate and geological data. Laboratory analyses of water samples from the production bore indicate very high levels of salinity and hardness which may lead to severe scaling and corrosion of pumps, pipes and pipe fittings.


Remediating Rdx-Contaminated Ground Water With Permanganate: Laboratory Investigations For The Pantex Perched Aquifer, M. L. Adam, Steven Comfort, Matthew C. Morley, Daniel D. Snow Jan 2004

Remediating Rdx-Contaminated Ground Water With Permanganate: Laboratory Investigations For The Pantex Perched Aquifer, M. L. Adam, Steven Comfort, Matthew C. Morley, Daniel D. Snow

Nebraska Water Center: Faculty Publications

Ground water beneath the U.S. Department of Energy Pantex Plant is contaminated with the high explosive RDX (hexahydro-1,3,5- trinitro-1,3,5 triazine). The USDOE Innovative Treatment and Remediation Demonstration (ITRD) program identified in situ oxidation by permanganate as a technology fit for further investigation. We evaluated the efficacy of KMnO4 to transform and mineralize RDX by determining degradation kinetics and carbon mass balances using 14C-RDX. Aqueous RDX solutions (2–5 mg L–1) and RDX-contaminated slurries (50% solids, w/v) were treated with KMnO4 at 1000, 2000, 4000, and 20,000 mg L–1. Treating an aqueous RDX solution of …


Private Lands Conservation In The U.S. Virgin Islands, Sonja Klopf, University Of Colorado Boulder. Natural Resources Law Center Jan 2004

Private Lands Conservation In The U.S. Virgin Islands, Sonja Klopf, University Of Colorado Boulder. Natural Resources Law Center

Books, Reports, and Studies

61 p. ; 28 cm


Private Lands Conservation In The Republic Of The Marshall Islands, Gregg De Bie, University Of Colorado Boulder. Natural Resources Law Center Jan 2004

Private Lands Conservation In The Republic Of The Marshall Islands, Gregg De Bie, University Of Colorado Boulder. Natural Resources Law Center

Books, Reports, and Studies

59 p. ; 28 cm


Ogallala Aquifer, Robert F. Diffendal Jr. Jan 2004

Ogallala Aquifer, Robert F. Diffendal Jr.

School of Natural Resources: Faculty Publications

The Ogallala Aquifer, or High Plains Aquifer, is a porous body of complex sediments and sedimentary rock formations that conducts groundwater and yields significant quantities of water to wells and springs. The principal sediments and rocks of the aquifer range in age from 33 million years old to sediments being deposited today, but the majority is less than 12 million-years old. Much of the aquifer is composed of the Ogallala Group or Formation. The dominant sediments in the Ogallala and the other hydrogeologic units in the aquifer are riverand wind-deposited sands. The aquifer underlies about 174,000 square miles of the …


Private Lands Conservation In Puerto Rico, Elizabeth Mccormack, University Of Colorado Boulder. Natural Resources Law Center Jan 2004

Private Lands Conservation In Puerto Rico, Elizabeth Mccormack, University Of Colorado Boulder. Natural Resources Law Center

Books, Reports, and Studies

41 p. ; 28 cm


Private Lands Conservation In The Commonwealth Of The Northern Mariana Islands, Gregg De Bie, University Of Colorado Boulder. Natural Resources Law Center Jan 2004

Private Lands Conservation In The Commonwealth Of The Northern Mariana Islands, Gregg De Bie, University Of Colorado Boulder. Natural Resources Law Center

Books, Reports, and Studies

68 p. ; 28 cm


Private Lands Conservation In Grenada, Kevin Doran, University Of Colorado Boulder. Natural Resources Law Center Jan 2004

Private Lands Conservation In Grenada, Kevin Doran, University Of Colorado Boulder. Natural Resources Law Center

Books, Reports, and Studies

47 p. ; 28 cm


Private Lands Conservation In Guam, Craig Corona, University Of Colorado Boulder. Natural Resources Law Center Jan 2004

Private Lands Conservation In Guam, Craig Corona, University Of Colorado Boulder. Natural Resources Law Center

Books, Reports, and Studies

93 p. ; 28 cm


Private Lands Conservation In The Federated States Of Micronesia, Kevin Doran, University Of Colorado Boulder. Natural Resources Law Center Jan 2004

Private Lands Conservation In The Federated States Of Micronesia, Kevin Doran, University Of Colorado Boulder. Natural Resources Law Center

Books, Reports, and Studies

74 p. ; 28 cm


Private Lands Conservation In The Solomon Islands, Craig Corona, University Of Colorado Boulder. Natural Resources Law Center Jan 2004

Private Lands Conservation In The Solomon Islands, Craig Corona, University Of Colorado Boulder. Natural Resources Law Center

Books, Reports, and Studies

69 p. ; 28 cm


Private Lands Conservation In St. Vincent And The Grenadines, Julie Truelsen, University Of Colorado Boulder. Natural Resources Law Center Jan 2004

Private Lands Conservation In St. Vincent And The Grenadines, Julie Truelsen, University Of Colorado Boulder. Natural Resources Law Center

Books, Reports, and Studies

56 p. ; 28 cm


Groundwater Study Of The York Townsite, Edward K. Crossley, Department Of Agriculture, Western Australia. Rural Towns Program Jan 2004

Groundwater Study Of The York Townsite, Edward K. Crossley, Department Of Agriculture, Western Australia. Rural Towns Program

Resource management technical reports

A groundwater study was carried out in the townsite of York in April-May 2002. The prupose was to collect information on local groundwater systems that could be used to develop a salinity management strategy. The study included a driling program, which established a network of monitoring bores. Seventy-seven monitoring bores were installed at 32 sites as well as a production bore for testing aquifer properties.


Grass Or Trees? Performance Of Riparian Buffers Under Natural Rainfall Conditions, Australia, Lucy Mckergow, I Prosser, R Grayson, David Weaver, D Heiner Jan 2004

Grass Or Trees? Performance Of Riparian Buffers Under Natural Rainfall Conditions, Australia, Lucy Mckergow, I Prosser, R Grayson, David Weaver, D Heiner

Journal articles

Riparian vegetation can trap sediment and nutrients derived from hillslopes. Most research into the effectiveness of riparian buffers has been experimental and little quantitative data exists on performance under natural field conditions. This study reports on grass and tree buffer performance under natural rainfall conditions in two contrasting Australian environments. Buffers receiving runoff from hillslopes cropped with bananas were monitored over a 4-year period in the wet topics of Far North Queensland (FNQ). Runoff, bedload and suspended loads were measured leaving the crop and leaving 15 m wide dense grass and remnant rainforest riparian buffers. The grass buffer was able …


An Analysis Of Simulated Long-Term Soil Moisture Data For Three Land Uses Under Contrasting Hydroclimatic Conditions In The Northern Great Plains, Rezaul Mamood, Kenneth G. Hubbard Jan 2004

An Analysis Of Simulated Long-Term Soil Moisture Data For Three Land Uses Under Contrasting Hydroclimatic Conditions In The Northern Great Plains, Rezaul Mamood, Kenneth G. Hubbard

High Plains Regional Climate Center: Staff Publications

Soil moisture (SM) plays an important role in land surface and atmosphere interactions. It modifies energy balance near the surface and the rate of water cycling between land and atmosphere. The lack of observed SM data prohibits understanding of SM variations at climate scales under varying land uses. However, with simulation models it is possible to develop a long-term SM dataset and study these issues. In this paper a water balance model is used to provide a quantitative assessment of SM climatologies for three land uses, namely, irrigated corn, rain-fed corn, and grass, grown under three hydroclimatic regimes in Nebraska. …


An Agricultural Drought Risk-Assessment Model For Corn And Soybeans, Hong Wu, Kenneth G. Hubbard, Donald A. Wilhite Jan 2004

An Agricultural Drought Risk-Assessment Model For Corn And Soybeans, Hong Wu, Kenneth G. Hubbard, Donald A. Wilhite

National Drought Mitigation Center: Faculty Publications

Copyright © 2004 Royal Meteorological Society. Published by Wiley InterScience. Used by permis-sion.


Drought Monitoring Using Data Mining Techniques: A Case Study For Nebraska, Usa, Tsegaye Tadesse, Donald A. Wilhite, Sherri K. Harms, Michael J. Hayes, Steve Goddard Jan 2004

Drought Monitoring Using Data Mining Techniques: A Case Study For Nebraska, Usa, Tsegaye Tadesse, Donald A. Wilhite, Sherri K. Harms, Michael J. Hayes, Steve Goddard

National Drought Mitigation Center: Faculty Publications

Drought has an impact on many aspects of society. To help decision makers reduce the impacts of drought, it is important to improve our understanding of the characteristics and relationships of atmospheric and oceanic parameters that cause drought. In this study, the use of data mining techniques is introduced to find associations between drought and several oceanic and climatic indices that could help users in making knowledgeable decisions about drought responses before the drought actually occurs. Data mining techniques enable users to search for hidden patterns and find association rules for target data sets such as drought episodes. These techniques …


Merredin Townsite Groundwater Pumping And Desalination Pilot Project, Rosemary Nott, Mark Pridham, Juana Roe, Jeff Ibbott, Alan Leeson, A Leeson Jan 2004

Merredin Townsite Groundwater Pumping And Desalination Pilot Project, Rosemary Nott, Mark Pridham, Juana Roe, Jeff Ibbott, Alan Leeson, A Leeson

Resource management technical reports

Townsite salinity affects more than 40 towns in the WA wheatbelt. Waterlogging and salinity are responsible for damamge to townsite infrastructure. Through groundwater pumping and desalination, the State Salinity Council (now the Natural Resource Management Council) granted Merredin the the chance to prevent further damage to the townsite by funding this project.


Bremer-Gairdner Catchment Appraisal Report 2003, Tim D. Overheu Jan 2004

Bremer-Gairdner Catchment Appraisal Report 2003, Tim D. Overheu

Resource management technical reports

Assessment of the condition and future risks to agricultural and natural resources within the Bremer-Gairdner region in Western Australia using the Rapid Catchment Appraisal. Details include climate, geology, soil-landscape information, hydrology, waterways, wetlands and estuaries, natural vegetation, land use and infrastructure, agricultural production, demographics; soil degredation risks, hydrology risks, farming system impacts, vegetation condition and risks, infrastructure assets; and management options.


Frankland-Gordon Area : Catchment Appraisal 2003, Tim D. Overheu, Natural Heritage Trust (Australia) Jan 2004

Frankland-Gordon Area : Catchment Appraisal 2003, Tim D. Overheu, Natural Heritage Trust (Australia)

Resource management technical reports

Rapid catchment appraisal to assess the condition of, and future risks to, agricultural and natural resources within the Frankland Gordon area in Western Australia.


Kellerberrin Townsite Test Pumping Results 2003, Louise Hopgood Jan 2004

Kellerberrin Townsite Test Pumping Results 2003, Louise Hopgood

Resource management technical reports

A production bore in Kellerberrin, Western Australia, was test pumped for 24 hours in August 2003. Data generated by the pumping were analysed with groundwater monitoring, climate and geological data. Laboratory analyses of water samples from the production bore indicate a low pH and very high levels of salinity, hardness, sodium, chloride, iron, sulphate, aluminium and manganese. This is likely to lead to scaling, blockages, staining and/or corrosion of pumps, pipes and pipe fittings.


Groundwater Investigation Buntine-Marchagee Natural Diversity Recovery Catchment, Russell John Speed, M Strelein Jan 2004

Groundwater Investigation Buntine-Marchagee Natural Diversity Recovery Catchment, Russell John Speed, M Strelein

Resource management technical reports

A groundwater investigation was initiated in the Buntine-Marchagee Natural Diversity Recovery Catchment 200 kms north-east of Perth, Western Australia in 2002. The investigation aimed to install a regional groundwater monitoring network and characterise the regolith throughout the catchment. Drill site selection was based on establishing a series of transects to enable construction of hydrogeological cross-sections to enhance conceptual understanding of the catchment.


Land For Maine's Future Program: Increasing The Return On A Sound Public Investment, Richard Barringer, Hugh Coxe, Jack Kartez, Catherine Reilly, Jonathan Rubin Jan 2004

Land For Maine's Future Program: Increasing The Return On A Sound Public Investment, Richard Barringer, Hugh Coxe, Jack Kartez, Catherine Reilly, Jonathan Rubin

Economics and Finance

Maine is nowhere a more special place than in the quality of its landscape and the traditions of its land use. Among the mo st privately-owned of all the states, Maine’s natural diversity and beauty combine with its traditions of resource stewardship, open access, and appreciation of nature to distinguish it in the public mind and national imagination. In recent decades, however, these traditions have come under assault from the forces of economic and social change; and the people of Maine have responded. In 1986, Governor Joseph Brennan’s Special Commission on Outdoor Recreation recognized the growing threats to Maine’s natur …