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Articles 1 - 30 of 57
Full-Text Articles in Physical Sciences and Mathematics
Limnological Assistance For Lake Mead National Recreation Area: Quarterly Report, Period Ending December 31, 2011, Margaret N. Rees
Limnological Assistance For Lake Mead National Recreation Area: Quarterly Report, Period Ending December 31, 2011, Margaret N. Rees
Limnological Studies
Project 1
- Technical assistance with the implementation of the Interagency Monitoring Action Plan (IMAP) for Quagga Mussels is ongoing; remaining analyses are underway with report delivery rescheduled for 05/2012.
- Data have been delivered for Veliger abundance and settlement at different depths of Lake Mead with report delivery re-scheduled for 05/2012.
- Growth of adult quagga mussels within Las Vegas Wash/Las Vegas Bay
- The Interagency Quagga Mussel Meeting was held on 11/17/2011; the next meeting is scheduled for 02/16/2011.
Project 2
- Appendix 7, an addition to the Long-term Limnological and Aquatic Resource Monitoring and Research Plan for Lakes Mead and Mohave, has …
Aquatic Plant Surveys In The Bureau Of Land Management, Medford District, 2010-2011, Mark D. Sytsma, Rich Miller, Vanessa Morgan
Aquatic Plant Surveys In The Bureau Of Land Management, Medford District, 2010-2011, Mark D. Sytsma, Rich Miller, Vanessa Morgan
Center for Lakes and Reservoirs Publications and Presentations
The introduction of invasive aquatic plant species (IAPS) can cause significant ecological and economic harm. IAPS can displace native aquatic plant species, impair recreation, and degrade water quality. Early detection of new invasions can improve chances for successful eradication or containment to reduce the risk of IAPS spread. The Oregon Department of Agriculture (ODA) lists the most egregious offenders as “Noxious Weeds” which are defined as plants classified by the Oregon State Weed Board that are injurious to public health, agriculture, recreation, wildlife, or any public or private property (ODA 2011).
Several IAPS classified as noxious have been detected within …
Groundwater Chemistry Of The Weaber Plain: Preliminary Results, Adam Lillicrap, Paul Raper, Richard J. George Dr, D L. Bennett
Groundwater Chemistry Of The Weaber Plain: Preliminary Results, Adam Lillicrap, Paul Raper, Richard J. George Dr, D L. Bennett
Resource management technical reports
In 2008, the Ord Irrigation Expansion Project was approved by the Western Australian Government to develop irrigated agriculture on the Weaber Plain. Construction of the M2 supply channel connecting the ORIA and the Weaber Plain, and the final period of irrigation design, environmental management and related approval processes, commenced later in 2009. This process followed a protracted period of public and private industry planning and environmental assessment (Kinhill 2000). This report summarises an analysis of groundwater salinity trends on the Ivanhoe and Weaber plains and the preliminary results of an intensive water-quality sampling program carried out in 2010 as part …
Surface Water Characteristics Of The Weaber Plain And Lower Keep River Catchments: Data Review And Preliminary Results, D L. Bennett, Richard J. George Dr
Surface Water Characteristics Of The Weaber Plain And Lower Keep River Catchments: Data Review And Preliminary Results, D L. Bennett, Richard J. George Dr
Resource management technical reports
In 2008, the Ord Irrigation Expansion Project was approved by the Western Australian Government to develop irrigated agriculture on the Weaber Plain.
An important concern is the effect the Weaber Plain agricultural development may have on the water quality of the downstream Border Creek and Keep River
This report assembles and reviews all available physico-chemical water quality data for the lower Keep River and Border Creek systems and presents data from the initial year of a targeted baseline monitoring program (June 2010 – June 2013).
Changing Climatic Conditions In The Colorado River Basin: Implications For Water Resources Management In The Las Vegas Valley, Srijana Dawadi
Changing Climatic Conditions In The Colorado River Basin: Implications For Water Resources Management In The Las Vegas Valley, Srijana Dawadi
UNLV Theses, Dissertations, Professional Papers, and Capstones
Climate change affects the water available in a region. It also affects the water demand, because of the increase in temperature. A system dynamics model was developed for the Colorado River Basin (CRB), operating at a monthly time scale, to assess the potential impacts of climate change on streamflow in the Colorado River and its subsequent impact on the water resources management in the Las Vegas Valley (LVV). The effect of climate change on streamflow was evaluated using 16 global climate model outputs for 3 emission scenarios, also referenced in the Inter-Governmental Panel on Climate Change Fourth Assessment Report. Risk …
The Effects Of Evapotranspiration Upon Recharge Using The Stable Isotopes Of Oxygen And Hydrogen In The Carbonate Aquifers Of The Cumberland Plateau In Southeast Kentucky, Lee J. Florea
Lee J Florea, PhD, P.G.
In this brief manuscript, we consider the variation of the stable isotopes of oxygen, δ18O, and hydrogen, δ2H, in samples collected during 2010 and 2011 from precipitation and shallow groundwater along the Cumberland Plateau of southeast Kentucky. These data from the 1,900-ha Redmond Creek karst aquifer lend insight into the source and timing of recharge to shallow groundwater in the epigenic karst of the U.S midcontinent. Specifically, we find that only 43% of precipitation remains as potential recharge after accounting for evapotranspiration, and 85% of this potential recharge occurs during only four two-week sampling periods. The isotopic composition of precipitation …
Judy Reservoir Monitoring Project 2011 Final Report, Robin A. Matthews, Joan Vandersypen
Judy Reservoir Monitoring Project 2011 Final Report, Robin A. Matthews, Joan Vandersypen
Judy Reservoir
The purpose of this study was to identify and count the phytoplankton and measure chlorophyll, total nitrogen, and total phosphorus levels in water samples collected from Judy Reservoir. Water quality and algal data have been collected on a weekly basis since October 2006; annual reports have been sent to the Skagit Public Utility District No. 1 in 2007, 2008, and 2010 (January and December).
Lake Samish Water Monitoring Project 2011b Final Report, Robin A. Matthews, Joan Vandersypen
Lake Samish Water Monitoring Project 2011b Final Report, Robin A. Matthews, Joan Vandersypen
Lake Samish
Lake Samish is a valuable aquatic resource, providing public access for boating, fishing, swimming, picnicking, and other water and lakeshore activities. Residents around the lake enjoy outstanding views of both the lake and its surrounding watershed, and the lake serves as a water supply for many of the lakeshore residents. Lake Samish is located in the Washington State Department of Ecology’s Water Resource Inventory Area #3 (WRIA 3), and discharges into Friday Creek, a salmon spawning tributary of the Samish River.
Lake Samish experiences periodic algal blooms, including blooms of potentially toxic cyanobacteria. The major goal of the monitoring project …
2011 Aquatic Weed Surveys In Timothy Lake, Lake Harriet And North Fork Reservoir : Final Report, Mark D. Sytsma, Vanessa Howard Morgan
2011 Aquatic Weed Surveys In Timothy Lake, Lake Harriet And North Fork Reservoir : Final Report, Mark D. Sytsma, Vanessa Howard Morgan
Center for Lakes and Reservoirs Publications and Presentations
Portland General Electric (PGE) was issued a new license by the Federal Energy Regulatory Commission (FERC) for the continued operation and maintenance of the Clackamas River Hydroelectric Project No. 2195 (Project) on December 21, 2010. This Project is located on both the lower 16 miles of Oak Grove Fork of the Clackamas River (Oak Grove Fork) and the mainstem of the Clackamas River in Clackamas County, Oregon. The effects of relicensing this Project were addressed in the Final Environmental Impact Statement (FEIS) completed in December 2006 and included the issue of invasive aquatic weed species. The term “aquatic weed” is …
Droughtscape- Fall 2011, Kelly Smith
Droughtscape- Fall 2011, Kelly Smith
Droughtscape, Quarterly Newsletter of NDMC, 2007-
Drought Preparedness Community Options
Drought Likely to Persist, Intensify Across South
Database Will Help Planners Find Options
Impacts: Ag Losses, Fire, Water Restrictions
NDMC Welcomes International Visitors
New Drought Impact Reporter Online
Sim-Drought, Available Now at Select Agencies
Limnological Assistance For Lake Mead National Recreation Area: Quarterly Report, Period Ending September 30, 2011, Margaret N. Rees
Limnological Assistance For Lake Mead National Recreation Area: Quarterly Report, Period Ending September 30, 2011, Margaret N. Rees
Limnological Studies
Project 1
- Technical assistance with the implementation of the Interagency Monitoring Action Plan (I-MAP) for Quagga Mussels is ongoing. During this quarter, processing of all 2010 juvenile/adult samples was completed; remaining analyses are underway. The project team assisted NPS with 2011 collections.
- A final report on Veliger abundance and settlement at different depths of Lake Mead is in preparation for delivery at the end of November 2011; sample analysis continues for Growth of adult quagga mussels within Las Vegas Wash/Las Vegas Bay with report delivery planned for the end of November 2011.
- The Interagency Quagga Mussel Meeting was held on …
Subsurface Controls On Mainland Marsh Shoreline Response During Barrier Island Transgressive Submergence, Mary Ellison
Subsurface Controls On Mainland Marsh Shoreline Response During Barrier Island Transgressive Submergence, Mary Ellison
University of New Orleans Theses and Dissertations
Many recent studies have sought to understand the response of barrier islands and their attendant marshes to sea level rise. The Mississippi River delta plain, specifically the Chandeleur Islands and associated interior wetlands in eastern Louisiana, serves as an excellent natural laboratory for studying these responses. This region is presently undergoing the highest rates of shoreline erosion (> 15 m yr -1) in North America as wetlands are converted to open water in a regime of subsidence-driven rapid relative sea-level rise (~1 cm yr-1). Three conceptual models were developed based on the geomorphic relationships observed in the marsh that describe …
Oceanic-Atmospheric And Hydrologic Variability In Long Lead-Time Forecasting, Abdoul Aziz Oubeidillah
Oceanic-Atmospheric And Hydrologic Variability In Long Lead-Time Forecasting, Abdoul Aziz Oubeidillah
Doctoral Dissertations
Water managers throughout the world are challenged with managing scarce resources and therefore rely heavily on forecasts to allocate and meet various water demands. The need for improved streamflow and snowpack forecast models is of the utmost importance. In this research, the use of oceanic and atmospheric variables as predictors was investigated to improve the long lead-time (three to nine months) forecast of streamflow and snowpack. Singular Value Decomposition (SVD) analysis was used to identify a region of Pacific and Atlantic Ocean SSTs and a region of 500 mbar geopotential height (Z500mb) that were teleconnected with streamflow and snowpack. The …
Groundwater Contamination Potential In Northern Nevada From Mining, Associated Communities, And Agriculture As Forecasted By Two Vulnerability Methods, John L. Swatzell
Groundwater Contamination Potential In Northern Nevada From Mining, Associated Communities, And Agriculture As Forecasted By Two Vulnerability Methods, John L. Swatzell
UNLV Theses, Dissertations, Professional Papers, and Capstones
Two methodologies, DRASTIC and the NDEP method, were used to compare the groundwater vulnerability of mining, associated towns, and agricultural areas in northern Nevada. The DRASTIC and NDEP methods were compared to determine which method produces a more accurate depiction of vulnerability. Vulnerability maps were created using the United States Environmental Protection Agency's (USEPA) DRASTIC and Nevada Department of Environmental Protection (NDEP) methodologies. The DRASTIC map uses seven aspect layers of geologic and hydrologic information with assigned values and weights that are applied to a mathematical equation. The NDEP method uses field data collection for potential contaminant sources and well …
Reed Lake Water Quality Monitoring Project January - June 2011 Final Report, Maggie Taylor
Reed Lake Water Quality Monitoring Project January - June 2011 Final Report, Maggie Taylor
Reed Lake
Reed Lake is located east of Highway 20 near Alger (WA) on the border of What- com and Skagit Counties. At the western tip of Reed Lake a concrete dam con- trols water flow into Cain Lake. Both lakes are surrounded by communities that have grown rapidly in the last few decades. Development extends to the shoreline around the entire perimeter of Reed Lake, with several boat launches and private docks. Residents around both lakes rely on individual septic systems for waste- water treatment. Recreation on the lake includes boating, swimming, and fishing for annually stocked rainbow trout (Oncorhynchus mykiss). …
Mercury In The Pelagic And Benthic Food Webs Of The Great Salt Lake, Wayne A. Wurtsbaugh, Erin Fleming, Caleb Izdepski, Jodi Gardberg
Mercury In The Pelagic And Benthic Food Webs Of The Great Salt Lake, Wayne A. Wurtsbaugh, Erin Fleming, Caleb Izdepski, Jodi Gardberg
Watershed Sciences Faculty Publications
No abstract provided.
Droughtscape- Summer 2011, Kelly Smith
Droughtscape- Summer 2011, Kelly Smith
Droughtscape, Quarterly Newsletter of NDMC, 2007-
New NDMC Website
Drought May Improve in Southeast and Southwest
Impacts Summary: Fire, Crop Loss and More
International Activities
NDMC Launches Ranch Planning Tool
Serving Data to Order
Workshop Builds Drought Planning Community
Identifying Changes In Climatic Trends And The Fingerprints Of Landuse And Landcover Changes In The High Plains Of The Usa, Denis Mutiibwa
Identifying Changes In Climatic Trends And The Fingerprints Of Landuse And Landcover Changes In The High Plains Of The Usa, Denis Mutiibwa
Department of Agricultural and Biological Systems Engineering: Dissertations, Theses, and Student Research
Human activities such as conversion of natural ecosystem to croplands and urban-centers, deforestation and afforestation impact biophysical properties of land surface such as albedo, energy balance, and surface roughness. Alterations in these properties affect the heat and moisture exchanges between the land surface and atmospheric boundary layer. The objectives of this research were; (i) to quantitatively identify the High plains’ regional climate change in temperatures over the period 1895 to 2006, (ii) detect the signatures of anthropogenic forcing of LULC changes on the regional climate change of the High Plains, and (iii) examine the trends in evolving regional latent heat …
Limnological Assistance For Lake Mead National Recreation Area: Quarterly Report, Period Ending June 30, 2011, Margaret N. Rees
Limnological Assistance For Lake Mead National Recreation Area: Quarterly Report, Period Ending June 30, 2011, Margaret N. Rees
Limnological Studies
Project 1
- Technical assistance with the implementation of the Interagency Monitoring Action Plan (I-MAP) for Quagga Mussels is ongoing. During this quarter, analysis was completed for 42 juvenile/adult samples and analyses of the remaining samples are underway.
- As of 7/07/11 all sample sets will have been collected for Veliger abundance and settlement at different depths of Lake Mead; sampling continues for Growth of adult quagga mussels within Las Vegas Wash/Las Vegas Bay.
- The Interagency Quagga Mussel Meeting was held on 05/17/11; the next meeting is scheduled for 08/25/11.
Project 2
- Appendix 7, an addition to the Long-term Limnological and Aquatic …
Birch Bay Village Lakes 2011 Final Report, Robin A. Matthews, Joan Vandersypen
Birch Bay Village Lakes 2011 Final Report, Robin A. Matthews, Joan Vandersypen
Birch Bay/Village Lakes
The Institute for Watershed Studies was contracted by the Birch Bay Village Lakes Committee to continue water testing at two sites in Kwann Lake and two sites in Thunderbird Lake (Figure 1, page 4). The sampling effort began in August 2007, and samples have been collected approximately 3–4 times each year through spring 2011. This report provides an update to the 2008 and 2009 data reports submitted to the Birch Bay Village Lakes Committee.
Building A Sustainable Network Of Drought Communities, Deborah J. Bathke, Nicole Wall, Jeff Nothwehr, Kelly Helm Smith, Donna L. Woudenberg, Tonya K. Bernadt, Crystal Bergman, Joseph P. Robine, Michael Hayes, Mark Svoboda, Lisa Darby, Roger S. Pulwarty, The National Drought Mitigation Center, The National Integrated Drought Information System Program Office
Building A Sustainable Network Of Drought Communities, Deborah J. Bathke, Nicole Wall, Jeff Nothwehr, Kelly Helm Smith, Donna L. Woudenberg, Tonya K. Bernadt, Crystal Bergman, Joseph P. Robine, Michael Hayes, Mark Svoboda, Lisa Darby, Roger S. Pulwarty, The National Drought Mitigation Center, The National Integrated Drought Information System Program Office
HPRCC Personnel Publications
The first step in managing large-scale (national) collaborations and networks is to consider and address how a group and a potential partnership may match up (Luther, 2005). To explore this concept and many other collaborative concepts, the National Integrated Drought Information System (NIDIS) hosted a workshop, “Building a Sustainable Network of Drought Communities,” which was facilitated by the National Drought Mitigation Center (NDMC) in Chicago, IL, June 8-9, 2011.
The workshop explored current examples of good communication and lessons learned within the realm of drought planning in order to address a future NIDIS Engaging Preparedness Communities (EPC) working group that …
Evaluating Changes And Estimating Seasonal Precipitation For Colorado River Basin Using Stochastic Non-Parametric Disaggregation Technique, Ajay Kalra, Sajjad Ahmad
Evaluating Changes And Estimating Seasonal Precipitation For Colorado River Basin Using Stochastic Non-Parametric Disaggregation Technique, Ajay Kalra, Sajjad Ahmad
Civil and Environmental Engineering and Construction Faculty Research
Precipitation estimation is an important and challenging task in hydrology because of high variability and changing climate. This research involves (1) analyzing changes (trend and step) in seasonal precipitation and (2) estimating seasonal precipitation by disaggregating water year precipitation using a k-nearest neighbor (KNN) nonparametric technique for 29 climate divisions encompassing the Colorado River Basin. Water year precipitation data from 1900 to 2008 are subdivided into four seasons (i.e., autumn, winter, spring, and summer). Two statistical tests (Mann-Kendall and Spearman’s rho) are used to evaluate trend changes, and a rank sum test is used to identify the step change in …
Drought-Ready Communities: A Guide To Community Drought Preparedness, Mark D. Svoboda, Kelly Smith, Melissa Widhalm, Donna Louise Woudenberg, Cody L. Knutson, Meghan Sittler, Jim Angel, Mike Spinar, Mark Shafer, Renee Mcpherson, Heather Lazrus
Drought-Ready Communities: A Guide To Community Drought Preparedness, Mark D. Svoboda, Kelly Smith, Melissa Widhalm, Donna Louise Woudenberg, Cody L. Knutson, Meghan Sittler, Jim Angel, Mike Spinar, Mark Shafer, Renee Mcpherson, Heather Lazrus
National Drought Mitigation Center: Publications
Table of Contents
Introduction to Drought-Ready Communities........................................................ 4
Section 1. Getting Started: Invite the Community to Participate, Commit to the Process...................... 7
1.1 Establish a leadership team that includes individuals with responsibility for monitoring, communication, and implementation .............................................. 7
1.2 Identify stakeholders or groups in the community that may need additional resources to participate in the Drought-Ready Communities process .................... 8
1.3 Include government agencies and regulators ....................................... 9
1.4 Develop a contact list ................................................................ 9
1.5 Gather community perceptions of drought .................................................. 10
Section 2. Information Gathering: Understand Water Sources and Uses, Develop a Drought History . 11
2.1 …
Association Of Oceanic-Atmospheric Oscillations And Hydroclimatic Variables In The Colorado River Basin, Ajay Kalra
Association Of Oceanic-Atmospheric Oscillations And Hydroclimatic Variables In The Colorado River Basin, Ajay Kalra
UNLV Theses, Dissertations, Professional Papers, and Capstones
With increasing evidence of climatic variability, there is a need to improve forecast for hydroclimatic variables i.e., precipitation and streamflow preserving their spatial and temporal variability. Climatologists have identified different oceanic-atmospheric oscillations that seem to influence the behavior of these variables and in turn can be used to extend the forecast lead time. In the absence of a good physical understanding of the linkages between oceanic-atmospheric oscillations and hydrological processes, it is difficult to construct a physical model. An attractive alternative to physically based models are the Artificial Intelligence (AI) type models, also referred to as machine learning or data-driven …
Panel Discussion Presentation: The Colorado River — Operation And Current Conditions, Lorri Gray-Lee
Panel Discussion Presentation: The Colorado River — Operation And Current Conditions, Lorri Gray-Lee
North American Energy Water Nexus Roundtable
Panel Discussion: U.S.-Mexico Transboundary Perspectives
The Colorado River: Operation and Current Conditions
- Overview of Basin
- Overview of the Interim Guidelines
- Current and Projected System Conditions
Panel Discussion Presentation: Consequences Of Global Climate Change For Water Quality And Community Sustainability Along The U.S.-Mexico Trans-Border Region, Jorge Duran Encalada
Panel Discussion Presentation: Consequences Of Global Climate Change For Water Quality And Community Sustainability Along The U.S.-Mexico Trans-Border Region, Jorge Duran Encalada
North American Energy Water Nexus Roundtable
Panel Discussion: U.S.-Mexico Transboundary Perspectives
Case Studies of Reynosa/McAllen and Laredo/Nuevo Laredo:
- Water availability and quality in Reynosa/McAllen and Laredo/Nuevo Laredo
- Water Consumption
- Socioeconomic Conditions
- Water Quality Scenarios
- Conclusions & Recommendations
Panel Discussion Presentation: Thoughts On Energy/Water Nexus – Energy Technologies, California Case, Terry Surles
Panel Discussion Presentation: Thoughts On Energy/Water Nexus – Energy Technologies, California Case, Terry Surles
North American Energy Water Nexus Roundtable
Panel Discussion: U.S.-Canada Transboundary Perspectives
Energy/Security/Water Problem Confluence:
There remains a critical need to make the best use possible of indigenous
national resources
- Water in the Southwest
- Energy resources in the region and nation
International energy resource competition will require effective development and use of national resources
- Geothermal, solar, wind, coal, uranium
Changing climate can produce "winners" as well as "losers" — requires an
understanding of past climate events and the impact on cultures
- Northern countries may benefit: Canada, Russia
- Temperate countries may suffer due to loss of cropland and increase of
tropical diseases and …
Droughtscape- Spring 2011, Kelly Smith
Droughtscape- Spring 2011, Kelly Smith
Droughtscape, Quarterly Newsletter of NDMC, 2007-
Register Now
Forecasters Say Dryness in TX and SW to Continue
Drought Planning, The Game: Coming Soon
Ding Takes New Post
South and Southwest Lose Crops, Fight Fires
Drought Monitor Authors Review Enhanced GIS Tools and New Processes
Estimation Of Land Surface Evapotranspiration With A Satellite Remote Sensing Procedure, Ayse Kilic, Ian Ratcliffe, Pariskhit Ranade, Kenneth Hubbard, Ramesh K. Singh, Babuarao Kamble, Jeppe Kjaersgaard
Estimation Of Land Surface Evapotranspiration With A Satellite Remote Sensing Procedure, Ayse Kilic, Ian Ratcliffe, Pariskhit Ranade, Kenneth Hubbard, Ramesh K. Singh, Babuarao Kamble, Jeppe Kjaersgaard
Great Plains Research: A Journal of Natural and Social Sciences
There are various methods available for estimating magnitude and trends of evapotranspiration. Bowen ratio energy balance system and eddy correlation techniques offer powerful alternatives for measuring land surface evapotranspiration. In spite of the elegance, high accuracy, and theoretical attractions of these techniques for measuring evapotranspiration, their practical use over large areas can be limited due to the number of sites needed and the related expense. Application of evapotranspiration mapping from satellite measurements can overcome the limitations. The objective of this study was to utilize the METRICTM (Mapping Evapotranspiration at High Resolution using Internalized Calibration) model in Great Plains environmental …
Limnological Assistance For Lake Mead National Recreation Area: Quarterly Report, Period Ending March 30, 2011, Margaret N. Rees
Limnological Assistance For Lake Mead National Recreation Area: Quarterly Report, Period Ending March 30, 2011, Margaret N. Rees
Limnological Studies
Project 1
- Technical assistance with the implementation of the Interagency Monitoring Action Plan (I-MAP) for Quagga Mussels is ongoing. During this quarter, analysis was completed for 13 juvenile/adult samples and analyses of the remaining samples are underway.
- Both research projects are well underway with 14 sample sets collected for Veliger abundance and settlement at different depths of Lake Mead and 12 samples collected for Growth of adult quagga mussels within Las Vegas Wash/Las Vegas Bay.
Project 2
- Annual summary sheets are under development for the topics listed within the Limnological and Aquatic Resource Monitoring and Research Plan for Lakes Mead …