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Articles 52801 - 52830 of 59392
Full-Text Articles in Entire DC Network
Overview Of Kansas Groundwater Management Districts: Their Duties, Authorities And Expectations, Wayne A. Bossert
Overview Of Kansas Groundwater Management Districts: Their Duties, Authorities And Expectations, Wayne A. Bossert
Water Organizations in a Changing West (Summer Conference, June 14-16)
8 pages.
Contains references.
Water Issues Facing Acequia Associations, Dennis Chavez
Water Issues Facing Acequia Associations, Dennis Chavez
Water Organizations in a Changing West (Summer Conference, June 14-16)
4 pages.
Supplying Southern California With Dependable Supplies Of Water, Duane L. Georgeson
Supplying Southern California With Dependable Supplies Of Water, Duane L. Georgeson
Water Organizations in a Changing West (Summer Conference, June 14-16)
20 pages (includes 1 map).
Contains references.
Navajo Nation’S Department Of Water Resources Management, Teresa M. Showa
Navajo Nation’S Department Of Water Resources Management, Teresa M. Showa
Water Organizations in a Changing West (Summer Conference, June 14-16)
13 pages (includes illustrations and 1 map).
Organizational Structure, Responsibilities And Authority: Northern Colorado Water Conservancy District, Larry Simpson
Organizational Structure, Responsibilities And Authority: Northern Colorado Water Conservancy District, Larry Simpson
Water Organizations in a Changing West (Summer Conference, June 14-16)
3 pages.
Approaches To Improved Irrigation Water Conservation Under Consideration By Northwest Kansas Groundwater Management District No. 4, Wayne A. Bossert
Approaches To Improved Irrigation Water Conservation Under Consideration By Northwest Kansas Groundwater Management District No. 4, Wayne A. Bossert
Water Organizations in a Changing West (Summer Conference, June 14-16)
13 pages.
Contains references.
The Central Utah Project Completion Act, P. Kirt Carpenter, Karen M. Ricks
The Central Utah Project Completion Act, P. Kirt Carpenter, Karen M. Ricks
Water Organizations in a Changing West (Summer Conference, June 14-16)
10 pages.
Innovative Approaches To Urban Water Conservation, Tom Griswold
Innovative Approaches To Urban Water Conservation, Tom Griswold
Water Organizations in a Changing West (Summer Conference, June 14-16)
10 pages.
Water Conservation Program: City Of Arvada, Colorado, Sterling E. Schultz
Water Conservation Program: City Of Arvada, Colorado, Sterling E. Schultz
Water Organizations in a Changing West (Summer Conference, June 14-16)
28 pages (includes illustrations).
The Relevance Of Water “Ownership” To Water Markets And Other Issues, Barton H. Thompson, Jr.
The Relevance Of Water “Ownership” To Water Markets And Other Issues, Barton H. Thompson, Jr.
Water Organizations in a Changing West (Summer Conference, June 14-16)
31 pages.
Contains references.
Water Conservation: The New Paradigm, Jeanne Mckeever
Water Conservation: The New Paradigm, Jeanne Mckeever
Water Organizations in a Changing West (Summer Conference, June 14-16)
17 pages.
Contains references.
Ownership Of Water Rights In Irrigation Water Delivery Organizations: An Outline Of The Major Issues, Jeffrey C. Fereday
Ownership Of Water Rights In Irrigation Water Delivery Organizations: An Outline Of The Major Issues, Jeffrey C. Fereday
Water Organizations in a Changing West (Summer Conference, June 14-16)
33 pages.
Contains footnotes.
Hydrogeochemical Characterization Of The Alvord Valley Known Geothermal Resources Area, Harney County, Oregon, Anna Maria St. John
Hydrogeochemical Characterization Of The Alvord Valley Known Geothermal Resources Area, Harney County, Oregon, Anna Maria St. John
Dissertations and Theses
The Alvord Valley Known Geothermal Resources Area (KGRA), located east of the Steens Mountain-Pueblo Mountains fault block in southeastern Oregon, is within the northern Basin and Range province. This investigation focuses on three thermal areas in the Alvord Basin: Borax Lake and the hot springs north of Borax Lake, Alvord Hot Springs and Mickey Springs.
Nutrient Content Of Runoff Water From Rice Fields, C. E. Wilson Jr., P. A. Moore Jr., R. J. Norman, B. R. Wells
Nutrient Content Of Runoff Water From Rice Fields, C. E. Wilson Jr., P. A. Moore Jr., R. J. Norman, B. R. Wells
Arkansas Water Resources Center Technical Reports
Current perception is that nutrient runoff from croplands is a significant contributor to poor water quality in some areas. While extensive research has been conducted to survey and ameliorate this problem for several upland crops, little work has been done to evaluate the problem with flooded rice (Oryza sativa, L.) soils. Since rice production utilizes a major portion of the total irrigation water usage for certain areas, it is important to understand the contribution of rice production to non-point source N and P in surface water. Several production fields were selected to evaluate the concentrations of nutrients in the floodwater …
The Influence Of Reservoir Basin Morphometry On Phytoplankton Community Structure, Richard L. Meyer, G. Keith Trost
The Influence Of Reservoir Basin Morphometry On Phytoplankton Community Structure, Richard L. Meyer, G. Keith Trost
Arkansas Water Resources Center Technical Reports
The research protocol was designed to compare three reservoirs with similar physical environments but different morphometry. Three reservoirs on the western edge of the Ozark uplift were selected because of their similar substrate and climatic condition. The reservoirs primarily differed in morphometry. Two of the reservoirs were of identical size, Bob Kidd and Prairie Groves Lakes, but of different configuration, semicircular and linear, respectively. The bifurcated lake, Lincoln Lake, was of smaller size. Each lake is dimictic. Each of the lakes were nitrate-N limited while soluble reactive phosphorus-P is available and not restricting the growth of phytoplankton. Although the pattern …
Prediction And Management Of Sediments Load And Phosporus In The Beaver Reservoir Watershed Using A Geographic Information System, J. M. Mckimmey, H. D. Scott
Prediction And Management Of Sediments Load And Phosporus In The Beaver Reservoir Watershed Using A Geographic Information System, J. M. Mckimmey, H. D. Scott
Arkansas Water Resources Center Technical Reports
A study was conducted to compile a GIS database for the Beaver Reservoir Watershed and then use the database to run the Universal Soil Loss Equation and the Phosphorus Index Model on the War Eagle Creek Watershed, a portion of the Beaver Reservoir Watershed database. Characterization of the spat i a 1 properties of the primary attributes compiled for the watershed were reported. In addition, water quality samples taken from War Eagle Creek were analyzed for relationships across the watershed. Erosion in the watershed was lower than expected with well vegetated and fertilized pastures contributing to the reduction of annual …
Acoustic Properties Of Fine‐Grained Sediments From Emerald Basin: Toward An Inversion For Physical Properties Using The Biot–Stoll Model, Robert C. Courtney, Larry A. Mayer
Acoustic Properties Of Fine‐Grained Sediments From Emerald Basin: Toward An Inversion For Physical Properties Using The Biot–Stoll Model, Robert C. Courtney, Larry A. Mayer
Affiliate Scholarship
Acoustic data from two long cores, comprising marine clays and silts taken from Emerald Basin off Nova Scotia, are presented. High‐resolution measurements of compressional wavevelocity,attenuation, and power law exponent are made using ultrasonic frequencies between 100 to 1000 kHz. The observed values of the frequency dependence of attenuation suggest that a nonconstant Q mechanism is needed to explain these data, and Biot–Stoll theory is used to model the experimental results. An inversion scheme is used to constrain physical parameters in the Biot–Stoll dispersion relation. The inversion shows that there is a restricted range of permeability and grain size. By assigning …
Effect Of Drying On Cyromazine Loss From Surface-Applied Caged-Layer Manure, T. C. Daniel, D. H. Pote, D. R. Edwards
Effect Of Drying On Cyromazine Loss From Surface-Applied Caged-Layer Manure, T. C. Daniel, D. H. Pote, D. R. Edwards
Arkansas Water Resources Center Technical Reports
In Arkansas, much of the environmental concern related to water quality has focused on the high volume of poultry fecal waste spread on the surf ace of local pastures to fertilize forage grass. Cyromazine (N-cyclopropyl-1,3,5-triazine-2,4,6- triamine), a feed-through larvicide used to control house flies (Musca domestica), is often a component of caged-layer manure. Cyromazine is quite soluble and stable in water, and previous research has shown that it can be readily washed from pasture plots by intense rainfall. Therefore, a study was conducted to evaluate increased drying time as a best management practice technique for reducing cyromazine runoff losses from …
Computer Simulation Model Calibration And Validation For Prediction Of Water Quality Impacts Of Poultry Waste Disposal, D. R. Edwards, T. C. Daniel
Computer Simulation Model Calibration And Validation For Prediction Of Water Quality Impacts Of Poultry Waste Disposal, D. R. Edwards, T. C. Daniel
Arkansas Water Resources Center Technical Reports
Runoff and water quality data collected from two pairs of grazed fields in northwestern Arkansas were analyzed to support efforts to model runoff quality from areas receiving poultry manure and other fertilizer sources. The monitoring period described in this report was September 1, 1991 to April 30, 1993. One of each pair of fields was fertilized with inorganic fertilizer, and the other received either poultry litter or manure. Losses of fertilizer constituents were quite low from an agronomic standpoint, ranging from approximately 2-11 kg N/ha/year and 0.5-4.1 kg P04-P/ha/year. Annual losses of fertilizer constituents were dominated by only a small …
Westhazel General Petroleums Pool: Case History Of A Salt- Dissolution Trap In West-Central Saskatchewan, Canada, Neil Lennart Anderson, Dale A. Cederwall
Westhazel General Petroleums Pool: Case History Of A Salt- Dissolution Trap In West-Central Saskatchewan, Canada, Neil Lennart Anderson, Dale A. Cederwall
Geosciences and Geological and Petroleum Engineering Faculty Research & Creative Works
The Westhazel General Petroleums (GP) Pool of west-central Saskatchewan, Canada, produces from the GP member of the Lower Cretaceous Mannville Group. This reservoir is structurally closed across the updip, eastern dissolutional edge of the underlying Middle Devonian rock salt of the Leofnard Member, Prairie Formation. The leaching of these salts occurred in post-Mannville time in the Westhazel area and caused the regional southwest dip of the General Petroleums member to be locally reversed.The Westhazel GP Pool, from a geophysical perspective, is characteristic of many of the shallow Lower Cretaceous pools situated along the dissolutional edge of the Prairie salt. The …
Information And Regulations Pertaining To Industrial Minerals In Nebraska, Raymond R. Burchett
Information And Regulations Pertaining To Industrial Minerals In Nebraska, Raymond R. Burchett
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Gravity Modeling Of A Patch Reef In Allegan County, Michigan, Mei Leng Wong
Gravity Modeling Of A Patch Reef In Allegan County, Michigan, Mei Leng Wong
Honors Theses
The study of the Diamond Springs oil field in Allegan County focuses on the use of gravity to delineate individual reef buildups. The Diamond Springs oil field is a small patch reef located in northern Allegan County, Michigan. The reef, which is approximately 1400 feet deep, is located within the Middle Devonian Traverse Limestone and was deposited in an open shelf, carbonate platform and lagoonal environment. The reef covers an area of approximately one square mile and has a vertical relief of 30 to 80 feet. These porous reef materials are commonly buried by muds or evaporites resulting in ideal …
The Hydrogeology Of Bonnie Castle And Dustin Lakes And Its Relationship To Groundwater Contamination From The Kl Avenue Landfill, Kalamazoo County, Michigan, Joseph S. Hobin
Masters Theses
The objectives of this investigation were to explain the hydrogeology of Bonnie Castle and Dustin Lakes and to assess the water quality of the lake environments with respect to possible impact from the KL Avenue Landfill.
The surface water/groundwater relationship was determined by the installation of mini-piezometer nests and seepage meters at selected study stations along the shoreline of each lake. Field data were augmented with groundwater and surface water chemical analyses, lake depth profiles and geologic cross-sections.
The result of this research was the characterization of Bonnie Castle Lake as a perched recharge lake and Dustin Lake as a …
Laboratory Studies Of Filter Pack Grain-Size Distributions And Hydrophobic Treatments To Enhance The Recovery Of Free-Phase Floating Hydrocarbons, Hugh Garret Heuvelhorst
Laboratory Studies Of Filter Pack Grain-Size Distributions And Hydrophobic Treatments To Enhance The Recovery Of Free-Phase Floating Hydrocarbons, Hugh Garret Heuvelhorst
Masters Theses
Experiments were conducted in laboratory sand tanks to evaluate filter pack design criteria in an effort to improve free-product hydrocarbon recovery from sand aquifers. Filter sands were prepared and installed in the test tanks to examine the relative efficiency of two different grain sizes and two different grain-size distributions to imbibe kerosene from the formation sand and release it to their respective wells. Treatments of different chemical products were applied to other filter sands to create a hydrophobic coating on the grains. The hydrophobic coatings were tested on filter sands of different grain sizes and grain-size distributions and compared to …
A Fracture Analysis Of Glacial Tills In Southwest Michigan, Ralph L. Freed
A Fracture Analysis Of Glacial Tills In Southwest Michigan, Ralph L. Freed
Masters Theses
Fractures were recorded and measured at seven southwest Michigan glacial till locations to identify geometry and spacing. Strong preferred orientations were shown at azimuths of 110° and 140° for two sites, and at azimuths of 85°, 110°, and 135°, and at 44° and 167° for two sites. Several sites had numerous oblique fractures.
Thirty-eight azimuthal Wenner arrays and four Schlumberger surveys show apparent resistivities vary widely with depth of penetration and material composition. Eleven percent of azimuthal surveys show an elliptical data array coinciding with preferred orientation of an adjacent fracture set. The relationship between azimuthal survey and fractures is …
The Health And Short-Term Change Of Two Coral Patch Reefs, Fernandez Bay, San Salvador Island, Bahamas, H. Allen Curran, Durelle P. Smith, Lucy Chambers Meigs, Ann E. Pufall, Mary Lisa Greer
The Health And Short-Term Change Of Two Coral Patch Reefs, Fernandez Bay, San Salvador Island, Bahamas, H. Allen Curran, Durelle P. Smith, Lucy Chambers Meigs, Ann E. Pufall, Mary Lisa Greer
Geosciences: Faculty Publications
Two coral patch reefs on the leeward shelf of San Salvador Island have been studied with surveys in 1983-84 and 1992 to monitor their ecological health and short-term change. Snapshot Reef covers an area of 50 x 50m and is dominated by Montastrea annularis. The reef was mapped in detail to show the position and size of its coral heads and 64 of these heads were studied in detail. To describe the reef, measurements were made of the height of each head, percent live coral coverage, the dominant coral species, total number of coral species present, M. annularis morphotypes presents, …
The Effects Of Composting Of Yard Wastes On The Ground-Water Quality: Wmu Farms Site, Kalamazoo, Michigan, Bryan Kirk Allen
The Effects Of Composting Of Yard Wastes On The Ground-Water Quality: Wmu Farms Site, Kalamazoo, Michigan, Bryan Kirk Allen
Masters Theses
In the rush to find alternatives to landfilling of yard waste, federal and state agencies have identified composting as the main solution. There is therefore a need to address the possible environmental problems which could be associated with such composting operations. Compost may contain nutrients, organic acids, pesticides, and metals which could leach through soils to the ground water posing a potential contamination problem.
At the WMU Farms Site, two sites have been used for the composting of leaves by the City of Kalamazoo. The physical and chemical hydrogeology of these sites were characterized.
The results suggest that the presence …
Groundwater Chemistry Analysis Of The Saginaw Formation In Delhi Township, Michigan, Sam L. Kitchin
Groundwater Chemistry Analysis Of The Saginaw Formation In Delhi Township, Michigan, Sam L. Kitchin
Masters Theses
Groundwater chemistry and well data provided by the Ingham County (Michigan) Health Department were used to evaluate the distribution of inorganic chemical constituents in the groundwater flow system of the Saginaw Formation, in Delhi Township, Michigan. The data also were used to study the distribution of chemical constituents with respect to different rock types of the Saginaw Formation. The data were analyzed to examine if variations in the concentrations of the chemical constituents and the values of other chemical parameters relate to rock-water interactions, groundwater flow systems, or groundwater contamination.
The results indicate that patterns of increasing or decreasing concentrations …
Napier-King Land Conservation District : Land Management Manual, Peter Hocking
Napier-King Land Conservation District : Land Management Manual, Peter Hocking
All other publications
With the discovery of the role of trace elements, large tracts of land in the south west of Western Australia, previously regarded as unsuitable for agriculture, were cleared in the 1950s and 1960s. Much of this land was taken up as Conditional Purchase Blocks, a scheme which enabled conversion of unalienated crown land to freehold title providing a set proportion of the block was 'developed'.
However, the removal of the natural deep rooted vegetation and its replacement with pasture species (up to 90% of privately owned land in the Napier-King LCD area is cleared) has not been without problems. The …
The Mobrup Catchment Working Plan - A Resource Inventory And Strategies, Steven Garrad
The Mobrup Catchment Working Plan - A Resource Inventory And Strategies, Steven Garrad
Soil conservation survey collection
The Mobrup LCDC has persevered for three years with its efforts to produce a catchment plan. They readily acknowledge that their work is just beginning as they now wrestle with this working plan to form something which will have application on each individual's enterprise to ensure a sustainable future for this catchment.This report is a collation of their ideas, an inventory of works done in the catchment and the best advice which research and local knowledge can provide.