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Articles 57601 - 57630 of 65348
Full-Text Articles in Entire DC Network
Usda-Aphis-Wildlife Services’ Involvement At Airports During Fy 1999 (Poster), Jessica Dewey
Usda-Aphis-Wildlife Services’ Involvement At Airports During Fy 1999 (Poster), Jessica Dewey
Bird Strike Committee-USA/Canada Joint Annual Meeting: 2nd (2000)
Birds and other wildlife are a serious problem at U.S. airports. Wildlife strikes cost U.S. civil aviation over $300 million per year, based on data from 1990-1998, and the number of reported bird strikes to civil aircraft has increased over 104% during that same time period. The increase in aircraft striking wildlife is due in part to the significant increase of various wildlife populations during the past 30 years. The United States Department of Agriculture, Animal and Plant Health Inspection Service, Wildlife Services (WS) program provides Federal assistance to airports in addressing wildlife hazards to aircraft. To comply with the …
Use Of Radar Systems At Commercial Airports For Bird Strike Hazard Identification, Ron Merritt, T. Adam Kelly
Use Of Radar Systems At Commercial Airports For Bird Strike Hazard Identification, Ron Merritt, T. Adam Kelly
Bird Strike Committee-USA/Canada Joint Annual Meeting: 2nd (2000)
Radars have commonly been used for bird detection since the late 1940s. More sophisticated methodologies have been developed over the past 15 years in an effort to provide advisories to pilots flying high-speed, low-level operations. More recently, radars have been used to identify and track bird movements around airports and bombing ranges to develop risk models for bird avoidance. We investigated various radar systems for detecting potentially hazardous bird movements on and in the vicinity of New Orleans International Airport. The systems were used to determine their potential in providing information for development of management strategies, active bird control efforts, …
Could Falcon Effigy Kites Increase The Efficacy Of Falconry I.P.M.?, Thomas N. Stephan
Could Falcon Effigy Kites Increase The Efficacy Of Falconry I.P.M.?, Thomas N. Stephan
Bird Strike Committee-USA/Canada Joint Annual Meeting: 2nd (2000)
When falconry is employed at airfields, not all birds can be induced to leave. Most do, but some do not go far, then return soon after the patrolling falconer drives away. There is evidence that falcon silhouettes cause fear responses in passerines, some corvids and waterfowl. Dr. Conrad Lorenz towed a silhouette of a goose over young fowl with little response. When the same silhouette was towed in a reverse direction, these same chicks exhibited fear response. Falcon decals are placed on windowpanes to prevent wild birds from colliding into them. Dr. Jeffrey R. Jenkins D.V.M. indicated that since the …
Proceedings Of 2nd Bird Strike Committee Usa/Canada Annual Meeting
Proceedings Of 2nd Bird Strike Committee Usa/Canada Annual Meeting
Bird Strike Committee-USA/Canada Joint Annual Meeting: 2nd (2000)
Proceedings of 2nd Bird Strike Committee USA/Canada Annual Meeting Abstracts
Development Of A Bird Avoidance Model For Naval Air Facility El Centro, California, Edward Zakrajsek, John Bissonette, Tricia Cutler
Development Of A Bird Avoidance Model For Naval Air Facility El Centro, California, Edward Zakrajsek, John Bissonette, Tricia Cutler
Bird Strike Committee-USA/Canada Joint Annual Meeting: 2nd (2000)
Two weeks after the Elmendorf AFB-AWACS crash (22 September 1995), the US Navy lost an F-18 Hornet to a birdstrike at Naval Air Facility El Centro (NAFEC) in southern California. NAFEC is surrounded by agricultural land where crops are grown year round, and its location just 26-km south of the Salton Sea National Wildlife Refuge suggests a very high probability of additional serious birdstrikes in the future. We are developing a computer-based Bird-Avoidance Model for the airfield and its two associated bombing ranges, to decrease the number of damaging birdstrikes. We are currently conducting bird counts to assess the distribution …
Faa Perspective On Future Directions Of Research And Development To Reduce The Bird Strike Threat, Michel J. Hovan, William J. Hughes
Faa Perspective On Future Directions Of Research And Development To Reduce The Bird Strike Threat, Michel J. Hovan, William J. Hughes
Bird Strike Committee-USA/Canada Joint Annual Meeting: 2nd (2000)
As bird strike risks keep increasing, the FAA is actively sponsoring research to minimize these risks. Bird strike risk reduction falls under the area of wildlife mitigation research. In this endeavor, FAA Research and Development faces challenges of budgetary and technical nature. From the budgetary standpoint, R&D funds were until recently very limited and the FAA could not carry out a comprehensive program in this area. Although still under funded, the wildlife mitigation R&D allocation has steadily improved and plans can now be made for the future. At the technical level, the areas of research for bird strike risks reductions …
Preliminary Results From Satellite And Vhf Tracking Of Relocated Red-Tailed Hawks At O’Hare International Airport, Laurence M. Schafer
Preliminary Results From Satellite And Vhf Tracking Of Relocated Red-Tailed Hawks At O’Hare International Airport, Laurence M. Schafer
Bird Strike Committee-USA/Canada Joint Annual Meeting: 2nd (2000)
Wildlife Services’ (WS) activities at O’Hare International Airport (ORD), 1997-1999, significantly reduced the annual number of wildlife strikes reported for ORD. The average annual number of reported strikes decreased from 104.2 (1992-1996) to 49 (1997-1999). However, the number of strikes involving red-tailed hawks (RTHA, Buteo jamaicensis) and American kestrels (AMKE, Falco sparverius) did not change (14.6 per year). On 1 January 1999, the Federal Aviation Administration sponsored a two-year study, in conjunction with the National Wildlife Research Center and WS-Illinois, to evaluate the efficacy of raptor relocation at ORD. All relocated RTHA were to be fitted with both …
Reducing The Presence Of Raptors At Kansas City International Airport, Robert Johnson, Dan Mcmurtry
Reducing The Presence Of Raptors At Kansas City International Airport, Robert Johnson, Dan Mcmurtry
Bird Strike Committee-USA/Canada Joint Annual Meeting: 2nd (2000)
Nationwide, between 1991 and 1997, the FAA wildlife strike database reported 939 raptor strikes, which accounted for 12% of all reported wildlife strikes. At Kansas City International Airport (MCI), between 1997 and 1999, 9 raptor strikes occurred involving known aircraft and 27 raptor strikes occurred involving unknown aircraft. These raptor strikes represented 13% of all wildlife strike events at MCI. MCI has a large yearly influx of raptors (red-tailed hawks, American kestrels, northern harriers, and great horned owls) during the period of October through March. From October 1997 until December 1999, 40 raptors were removed from the airport through the …
Management Of Rodent Populations At Airports, Jessica Dewey, Gary W. Witmer
Management Of Rodent Populations At Airports, Jessica Dewey, Gary W. Witmer
Bird Strike Committee-USA/Canada Joint Annual Meeting: 2nd (2000)
Birds and other wildlife are a serious problem at U.S. airports. Certain species are more hazardous to aviation safety than others, most often due to the size and behavior of the species. Raptors, including hawks, vultures, and eagles, were the fourth most common bird group reported in bird strikes to the Federal Aviation Administration from 1991 - 1997, and hawks specifically were the fifth most common bird species group reported in bird strikes in Canada during the same time period. Red-tailed hawks were the fifth most common bird species reported in U.S. Air Force bird strikes from 1985 - 1999, …
Resolving Bird/Aircraft Hazards At Naval Air Station North Island, San Diego, California, John L. Cummings, John Turman, Brian V. Archuleta
Resolving Bird/Aircraft Hazards At Naval Air Station North Island, San Diego, California, John L. Cummings, John Turman, Brian V. Archuleta
Bird Strike Committee-USA/Canada Joint Annual Meeting: 2nd (2000)
Birds present a direct hazard to aviation safety at Naval Air Station North Island, San Diego, California. We monitored the bird hazards at NASNI between April 1996 and April 1997, made recommendations to resolve the bird hazard to aircraft and evaluated WS Operational program at NASNI. We documented 27 bird/aircraft strikes on NASNI from April 1991 to April 1997. Of these, western gulls represented 77%, mallards 9%, American coots 4.5% and great blue herons 4.5%. Most strikes that occurred between March and September were attributed to western gulls, where as waterfowl were struck most often between October and February. The …
Defining And Reducing Wildlife Hazards To Aviation In The Usa, Richard A. Dolbeer, Scott C. Barras, Bradley F. Blackwell, Thomas W, Seamans, Sandra E. Wright, Edward C. Cleary
Defining And Reducing Wildlife Hazards To Aviation In The Usa, Richard A. Dolbeer, Scott C. Barras, Bradley F. Blackwell, Thomas W, Seamans, Sandra E. Wright, Edward C. Cleary
Bird Strike Committee-USA/Canada Joint Annual Meeting: 2nd (2000)
The U.S. Department of Agriculture’s National Wildlife Research Center (NWRC), through an interagency agreement with the U.S. Federal Aviation Administration (FAA), conducts a national research program to define and reduce bird and other wildlife hazards to aircraft. The goal is to provide the FAA and airports nationwide with a scientific foundation for policies and recommendations related to wildlife and aviation safety. Research tasks conducted by NWRC under the agreement include: 1) investigations of habitat management and land-use practices on and near airports to reduce bird activity; 2) development and evaluation of bird repellent and frightening methods for airports; 3) management …
Study Of Polyaromatic Hydrocarbons Emitted In The Fly Ash From Coal Combustion In A Fluidized Bed Combuster, Rebecca Heltsley
Study Of Polyaromatic Hydrocarbons Emitted In The Fly Ash From Coal Combustion In A Fluidized Bed Combuster, Rebecca Heltsley
Masters Theses & Specialist Projects
Exposure to Polyaromatic Hydrocarbons (PAHs) has long been identified as an environmental concern because of their carcinogenic and mutagenic effects. The Environmental Protection Agency (EPA) has developed a list of 16 PAHs that are found on the Priority Pollutant List due to the extensive amount of data suggesting the hazards of these compounds. These toxic compounds are often emitted into the atmosphere by anthropogenic sources, such as combustors. Therefore, analysis of these compounds must be conducted during coal combustion. Two 1000-hour coal combustion burns were performed using the 0.1 MWth bench-scale fluidized bed combustor (FBC), which is found in the …
Characterization Of An Isolate That Uses Vinyl Chloride As A Growth Substrate Under Aerobic Conditions, Matthew F. Verce, Ricky L. Ulrich, David L. Freedman
Characterization Of An Isolate That Uses Vinyl Chloride As A Growth Substrate Under Aerobic Conditions, Matthew F. Verce, Ricky L. Ulrich, David L. Freedman
Publications
An aerobic enrichment culture was developed by using vinyl chloride (VC) as the sole organic carbon and electron donor source. VC concentrations as high as 7.3 mM were biodegraded without apparent inhibition. VC use did not occur when nitrate was provided as the electron acceptor. A gram-negative, rod-shaped, motile isolate was obtained from the enrichment culture and identified based on biochemical characteristics and the sequence of its 16S rRNA gene as Pseudomonas aeruginosa, designated strain MF1. The observed yield of MF1 when it was grown on VC was 0.20 mg of total suspended solids (TSS)/mg of VC. Ethene, acetate, glyoxylate, …
Ecology Of Elk In The Pine Ridge Region Of Northwestern Nebraska: Seasonal Distribution, Characteristics Of Wintering Sites, And Herd Health, Michael A. Cover
Ecology Of Elk In The Pine Ridge Region Of Northwestern Nebraska: Seasonal Distribution, Characteristics Of Wintering Sites, And Herd Health, Michael A. Cover
School of Natural Resources: Dissertations, Theses, and Student Research
No abstract provided.
Economic Analysis Of A Large Scale Oral Vaccination Program To Control Raccoon Rabies, Philip Kemere, Michael K. Liddel, Phylo Evangelou, Dennis Slate, Steven Osmek
Economic Analysis Of A Large Scale Oral Vaccination Program To Control Raccoon Rabies, Philip Kemere, Michael K. Liddel, Phylo Evangelou, Dennis Slate, Steven Osmek
Human Conflicts with Wildlife: 2002 Symposium
Since the late 1980s, results of oral vaccination trials in several states have provided growing evidence that this vaccination method may be effective for controlling the spread of rabies in raccoons (Procyon lotor). This study examines the economic feasibility of using oral vaccination on a larger scale than previous trials. We analyze the benefits and costs associated with a hypothetical barrier that would stretch from Lake Erie to the Gulf of Mexico, combining natural geographic features provided by the Appalachian Mountains with oral vaccination zones. The goal of this barrier would be to prevent the raccoon rabies variant …
Cormorant Depredation Losses And Their Prevention At Catfish Farms: Economic Considerations, James F. Glahn, Scott J. Werner, Terry Hanson, Carole R. Engle
Cormorant Depredation Losses And Their Prevention At Catfish Farms: Economic Considerations, James F. Glahn, Scott J. Werner, Terry Hanson, Carole R. Engle
Human Conflicts with Wildlife: 2002 Symposium
Although several piscivorous birds are involved in depredation conflicts with southern aquaculture, the double-crested cormorant causes some of the most widespread and significant problems to catfish, the dominant industry. Unlike other agriculture commodities, catfish losses due to predation cannot be directly measured, so we review several approaches taken to estimate these losses. Although these approaches are valid for predicting the costs of simply replacing these fish at the time of predation, they have been criticized because they failed to consider the functional relationships between predation and output parameters at harvest. Recent controlled experiments are reviewed that confirm previous estimates of …
Damage Abatement And Compensation Programs As Incentives For Wildlife Management On Private Land, Jonathan K. Yoder
Damage Abatement And Compensation Programs As Incentives For Wildlife Management On Private Land, Jonathan K. Yoder
Human Conflicts with Wildlife: 2002 Symposium
Public damage abatement and compensation programs may be used to alter private incentives for damage abatement and habitat provision. A model is developed that explains the economic logic behind prevalent characteristics of public wildlife damage programs. The model is supported with an examination of a broad cross-section of wildlife agency policy and law. The model can be used by wildlife managers and policy makers as a conceptual framework for understanding the incentive effects of compensation and abatement policy.
Economic Considerations Of Damage Assessment, Richard M. Engeman
Economic Considerations Of Damage Assessment, Richard M. Engeman
Human Conflicts with Wildlife: 2002 Symposium
Cost-effectiveness is the fundamental economic test of any damage control or damage mitigation strategy, and damage assessment is the essential component for determination of cost-effectiveness. However, there are many potential costs associated with making damage assessments. The sampling and measurement required to produce a damage assessment have associated effort and costs, but even greater costs can be incurred due to inappropriate management decisions resulting from inaccurate damage assessments. Other costs can result from using an assessment method that is unsuited to management objectives, or by misinterpreting or not understanding the relationship between observed damage and actual losses. The concepts of …
Spreadsheets, Response Surfaces, And Intervention Decisions In Wildlife Damage Management, Ray T. Sterner
Spreadsheets, Response Surfaces, And Intervention Decisions In Wildlife Damage Management, Ray T. Sterner
Human Conflicts with Wildlife: 2002 Symposium
An a priori approach to examining the economics of performing management activities to reduce agricultural and resource damage by wildlife is described. Computer spreadsheet procedures are used to derive response surfaces of potential net savings and benefit:cost indices for selected crop- or resource-protection activities. Tabular and graphical displays of these indices afford decision-making aids for wildlife-damage interventions. An example based on the use of an acute rodenticide, zinc phosphide (Zn3P2), for vole (Microtus spp.) control in alfalfa (Medicago sativa) is described. Iterative calculations were derived for 1,260 possible combinations of 3 field-size, 6 …
Development Of A Model To Assess Rodent Control In Swine Facilities, Kurt C. Vercauteren, Scott E. Hygnstrom, Robert M. Timm, Robert M. Corrigan, John Beller, Larry L. Bitney, Michael C. Brumm, Daniel Meyer, Dallas R. Virchow, Robert W. Wills
Development Of A Model To Assess Rodent Control In Swine Facilities, Kurt C. Vercauteren, Scott E. Hygnstrom, Robert M. Timm, Robert M. Corrigan, John Beller, Larry L. Bitney, Michael C. Brumm, Daniel Meyer, Dallas R. Virchow, Robert W. Wills
Human Conflicts with Wildlife: 2002 Symposium
At the request, and with the support, of the National Pork Producers Council we are conducting a comprehensive economic analysis of rodent control in swine production facilities. The authors represent an interdisciplinary working group that has been assembled to identify all necessary input variables and values associated with rodent damage and control. The working group consists of specialists in swine production, facilities management, agricultural economics, swine health, rodent control, the pest management industry, systems modeling, and distance education. We incorporated data from the scientific literature and personal experience into an interactive STELLA systems model. The model generates benefit-cost analyses and …
Economics Of Predation Management In Relation To Agriculture, Wildlife, And Human Health And Safety, Michael J. Bodenchuk, J. Russell Mason, William C. Pitt
Economics Of Predation Management In Relation To Agriculture, Wildlife, And Human Health And Safety, Michael J. Bodenchuk, J. Russell Mason, William C. Pitt
Human Conflicts with Wildlife: 2002 Symposium
Predation management is controversial and much recent debate has focused on the cost of management efforts. This manuscript considers the cost of predators to agriculture, big game or threatened and endangered species management, and human health and safety. Subsequently, the cost of efforts to manage predation in these contexts is discussed, and benefit:cost ratios are calculated. When properly applied, predation management shows benefit:cost ratios of between 3:1 to 27:1 for agriculture and 2:1 to 22:1 for wildlife protection. For human health and safety, benefit:cost ratios are more difficult to calculate, but we argue that benefits outweigh costs in many different …
Economic Tools For Managing Impacts Of Urban Canada Geese, Nicole H. Mccoy
Economic Tools For Managing Impacts Of Urban Canada Geese, Nicole H. Mccoy
Human Conflicts with Wildlife: 2002 Symposium
Management of urban Canada geese impacts can be assisted by the use of economic analyses of both the problem and the proposed solution. Management of a species that is both geographically mobile and stationary, protected by the Migratory Bird Act of 1918, and loved by much of the public while posing a significant risk of damage to both private and public property is a difficult task. The issue is further complicated by the scope and scale of urban goose impacts. While the presence of urban Canada geese results in both positive and negative impacts, this paper will focus primarily on …
Pieces Of Silver: Examples Of The Economic Impact And Management Of The Silver Gull (Larus Novaehollandiae) In Melbourne, Australia, Ian D. Temby
Human Conflicts with Wildlife: 2002 Symposium
Like a number of gull species, the silver gull Larus novaehollandiae has expanded its population in response to human food subsidy. The major anthropogenic food source is food waste at rubbish tips. Other sources of human food waste are also exploited. Many problems result from the activities of these birds, including human health and safety, economic impacts, and effects on the conservation of other species. My study examines aspects of the economic impacts of the silver gull on the human community of the Greater Melbourne Area comprising approximately 4,065 km2 (1,569 square miles). My data collection method involves identifying …
Wildlife Impacts On Forest Resources, Dale L. Nolte, Mike Dykzeul
Wildlife Impacts On Forest Resources, Dale L. Nolte, Mike Dykzeul
Human Conflicts with Wildlife: 2002 Symposium
The negative impacts of wildlife on forest resources can be extensive. This paper provides some insight into the economic and environmental consequences of wildlife damage to forest resources and a brief overview of the damage inflicted by select wildlife species. Probably the most thorough measure of wildlife damage to forests in the Pacific Northwest was initiated in 1963 and 1964 by the Committee on Animal Damage Survey of the Western Forestry and Conservation Association. This study estimated that 30% of the tree seedlings planted would be damaged if no preventive practices were implemented; stocking rates on unprotected sites were 75% …
The Economic Impact Of Invasive Species To Wildlife Services’ Cooperators, David L. Bergman, Monte D. Chandler, Adrienne Locklear
The Economic Impact Of Invasive Species To Wildlife Services’ Cooperators, David L. Bergman, Monte D. Chandler, Adrienne Locklear
Human Conflicts with Wildlife: 2002 Symposium
On February 3, 1999, the president of the United States signed an Executive Order 13112 on invasive species. Each federal agency was directed to detect and respond rapidly to control populations of invasive species, monitor invasive species populations, provide for restoration of native species and habitat conditions, conduct research on invasive species and develop technologies to prevent their introduction, and promote public education on invasive species and the means to address them. The United States Department of Agriculture’s Wildlife Services Program fulfills a federal responsibility for helping solve problems which occur when human activity and wildlife, including invasive species, are …
Has An Integrated Pest Management Approach Reduced Blackbird Damage To Sunflower?, George M. Linz, Brian D. Peer, H. Jeffrey Homan, Ryan L. Wimberly, David L. Bergman, William J. Bleier
Has An Integrated Pest Management Approach Reduced Blackbird Damage To Sunflower?, George M. Linz, Brian D. Peer, H. Jeffrey Homan, Ryan L. Wimberly, David L. Bergman, William J. Bleier
Human Conflicts with Wildlife: 2002 Symposium
Since the mid-1970s many new and modified damage abatement methods have been implemented to reduce blackbird damage to ripening sunflower in the northern Great Plains. Concurrently, estimates were made of breeding blackbird densities and sunflower damage to track changes in population size and chart progress toward reducing damage. Breeding density estimates were made at both the regional and county levels, whereas sunflower damage estimates were made at the county level only. Periodic regional estimates of breeding densities, between 1967 and 1998, showed that numbers of red-winged blackbirds (Agelaius phoeniceus) and yellow-headed blackbirds (Xanthocephalus xanthocephalus) did not …
Design And Characterization Of A Synthetic Electron-Transfer Protein, Anna Y. Kornilova, James F. Wishart, Wenzhong Xiao, Robin C. Lasey, Anna Fedorova, Yeon-Kyun Shin, Michael Y. Ogawa
Design And Characterization Of A Synthetic Electron-Transfer Protein, Anna Y. Kornilova, James F. Wishart, Wenzhong Xiao, Robin C. Lasey, Anna Fedorova, Yeon-Kyun Shin, Michael Y. Ogawa
Chemistry Faculty Publications
A 30-residue polypeptide [H21(30-mer)] with the sequence Ac-K(IEALEGK)(2)(IEALEHK)-(IEALEGK)G-NH2 was synthesized. The circular dichroism (CD) spectrum of the peptide shows minima at 208 and 222 nm and theta(222)/theta(208) = 1.06, which indicates the formation of a self-assembled coiled-coil when dissolved in aqueous solution. The concentration dependence of the CD data can be fit to an expression that describes a two-state monomer-dimer equilibrium for the apopeptide (K-d = 1.5 +/- 0.4 mu M and theta(max) = -23 800 +/- 130 deg cm(2) dmol(-1)), showing that it has a maximum helicity of 69%. A [MTSL-C21(30-mer)] dimer was also prepared in which MTSL is …
The Application And Performance Of A Generic Task Routine Decision Making Algorithm To Recipe Selection In Meal Planning, Michelle M. Cox
The Application And Performance Of A Generic Task Routine Decision Making Algorithm To Recipe Selection In Meal Planning, Michelle M. Cox
Theses and Dissertations - UTB/UTPA
A nutritional meal planning system was implemented to test the effectiveness of a previously developed routine decision making algorithm. The combinatorics involved in ordering recipes in all possible combinations to produce variability in a meal plan and provide sufficient nutrition is conceptually intensive. Meal planning involves selection of food to eat to fulfill a person's nutritional and personal preferences. This thesis demonstrates meal planning as a decision making problem and demonstrates the utility of the routine decision making algorithm by solving this problem. Generic Tasks, identified through artificial intelligence research, provides the basis for this algorithm. It uses user preferences …
Studies Of Sulfur Reduction Of Taurine And Taurine-Conjugated Bile Acids By Bile Acid 7Α-Dehydroxylating Bacteria, Jiang Qian
Masters Theses & Specialist Projects
Bile acids are C24 steroids that are derived in the liver from cholesterol and secreted into the intestinal lumen to aid in emulsification of dietary lipids and lipid-soluble vitamins. The indigenous intestinal microflora modify bile acids, producing up to 20 unique bile acid metabolites. The 7α-dehydroxylation of the bile acids is the most physiologically important bile acid biotransformation. All known intestinal bacteria capable of bile acid 7α-dehydroxylation are anaerobic, gram-positive rods of the genera Clostridium and Eubcicterium. Bile acid 7α-dehydroxylating bacteria often contain bile salt hydrolase, which hydrolyzes the peptide bond in taurine-conjugated bile acids to yield a free bile …
Water Current, Volume 32, No. 4, August 2000
Water Current, Volume 32, No. 4, August 2000
Water Current Newsletter
New Method for Detecting Trace Amounts of MTBE and Ethanol at Heart of UNL Contamination Research
From the Director: New Director, New Directions, New Challenges
Lawn and Garden Drought and Climate Tolerance Are Focus of Festival of Color
Summer 2000 Water and Natural Resources Tour
Re-Cap of Water Management Issues Available Free
See You at Husker Harvest Days
NDEQ Water Quality Monitoring
Center-Pivot Map Available