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Articles 7381 - 7410 of 8291
Full-Text Articles in Physical Sciences and Mathematics
Volume 4, Number 3 (March 1980), The Solar Ocean Energy Liaison
Volume 4, Number 3 (March 1980), The Solar Ocean Energy Liaison
The OTEC Liaison
No abstract provided.
Evaluation Of Possible Temperature Fluctuations From Proposed Power Modifications At Hoover Dam, Larry J. Paulson, John R. Baker, U.S. Water And Power Resources Service
Evaluation Of Possible Temperature Fluctuations From Proposed Power Modifications At Hoover Dam, Larry J. Paulson, John R. Baker, U.S. Water And Power Resources Service
Publications (WR)
There are several planned alternatives for increasing the generation capacity of Hoover Dam to help meet peak power demands. These alternatives include: (a) uprating the existing generating units, (b) replacing or adding one or more generating units and (c) adding reversible pumped-storage hydroelectric units. Since the existing generators are at the end of their economic life and have to be replaced, their uprating has been scheduled as routine maintenance. This will increase the generating capacity of the Hoover Dam powerplant from 1240 MW to 1810 MW, but the anticipated capacity for meeting power demand is 2300 MW. Therefore, modifications (alternatives …
Evaluation Of Impacts Associated With Reregulation Of Water Levels In Lake Mohave, Larry J. Paulson, John R. Baker, U.S. Water And Power Resources Service
Evaluation Of Impacts Associated With Reregulation Of Water Levels In Lake Mohave, Larry J. Paulson, John R. Baker, U.S. Water And Power Resources Service
Publications (WR)
The U.S. Water and Power Resources Service is considering reregulating Lake Mohave water levels to increase the net power benefit from Hoover Dam. Reregulation will not increase the generation capacity of the Hoover powerplant but it will enable the plant operation to be increased when the energy has greater monetary value. Energy generated at different times of the year has different market value, the highest being in January-March and July- September. By generating more power during these periods more net monetary benefit can be derived from Hoover Dam. The total volume of water released from Hoover Dam over an annual …
Chemistry Of The Spring Waters Of The Ouachita Mountains Excluding Hot Springs, Arkansas, George H. Wagner, Kenneth F. Steele
Chemistry Of The Spring Waters Of The Ouachita Mountains Excluding Hot Springs, Arkansas, George H. Wagner, Kenneth F. Steele
Technical Reports
This report is based on the chemical analysis of the waters from 93 springs and 9 wells. Springs, when free from metal plumbing, provide an uncontaminated source of the ground water and it was desired to obtain water uncontaminated with metals. A few wells were added to the list, usually because of their unique location in the sampling grid.
Volume 4, Number 2 (February 1980), The Solar Ocean Energy Liaison
Volume 4, Number 2 (February 1980), The Solar Ocean Energy Liaison
The OTEC Liaison
No abstract provided.
An Environmental Study Of The Origin, Distribution, And Bioaccumulation Of Selenium In Kentucky And Barkley Lakes, B. E. Mcclellan, Kenneth J. Frazer
An Environmental Study Of The Origin, Distribution, And Bioaccumulation Of Selenium In Kentucky And Barkley Lakes, B. E. Mcclellan, Kenneth J. Frazer
KWRRI Research Reports
Many samples of water, bottom sediment, and fish were analyzed for toxic metal ion content. The samples were collected from several selected sites along Kentucky and Barkley Lakes as well as the Cumberland River and several sub-impoundments along these aquatic systems. Emphasis was placed on selenium, although several other metal ions were determined. The results showed that there are no serious pollution problems with As, Cd, Cr, Cu, Hg, Pb, Se, Sr, Zn, or Zr at any of the sites examined. Actually, none of the trace metals examined even come close to the EPA limits on fish, with the exception …
Water Current, Volume 12, No. 1, January/February 1980
Water Current, Volume 12, No. 1, January/February 1980
Water Current Newsletter
Annual Report, Nebraska Water Resources Center
Water Planner Hired
Water Resources Seminar Schedule Change
Second Water Data Conference
Engineering Short Course at UNL
New Edition of Publication No. 7
Nation-Wide Conservation Program
Unified National Program for Floodplain Management
NSF Research Program in Appropriate Technology
Research Review: The Biological Regulation of Bloom-Causing Blue-Green Algae: A Feasible Alternative
Fish And Wildlife Mitigation Report : Dickey-Lincoln School Lakes Project, Maine, New England Division, Corps Of Engineers, U. S. Army Engineer Division
Fish And Wildlife Mitigation Report : Dickey-Lincoln School Lakes Project, Maine, New England Division, Corps Of Engineers, U. S. Army Engineer Division
Dickey-Lincoln School Lakes Project
The Dickey Lincoln School Lakes Project is a proposed multipurpose project located on the upper reaches of the St. John River in Aroostook County, Maine. Development would consist of two dams with associated reservoirs and hydroelectric generating facilities, five dikes and transmission lines. A more detailed description of the proposed project and its associated impacts is contained within the Revised Draft Environmental Impact Statement for the proposed project.
Dickey-Lincoln School Lakes Project At Dickey, Maine : Draft Supplement Environmental Impact Statement, U.S. Army Engineer Division, New England Division
Dickey-Lincoln School Lakes Project At Dickey, Maine : Draft Supplement Environmental Impact Statement, U.S. Army Engineer Division, New England Division
Dickey-Lincoln School Lakes Project
The purpose of this Draft Supplement (SDEIS) to the Revised Draft Environmental Impact Statement (RDEIS) is to evaluate the environmental impacts of the Fish and Wildlife Mitigation Plan proposed for Implementation in conjunction with development of the Dickey-Lincoln School Lakes Project, Maine (Appendix K, RDEIS and Attachment 1 of the Report). Although the mitigation plan is intended to mitigate rather than impose adverse environmental impacts, the mitigation measures proposed do constitute a major Federal action requiring the development of a supplemental environmental impact statement pursuant to the National Environmental Policy Act of 1969.
Annotated Biobliography Of Remote Sensing For Highway Planning And Natural Resources, An, Daniel L. Civco, William C. Kennard, Michael Wm. Lefor
Annotated Biobliography Of Remote Sensing For Highway Planning And Natural Resources, An, Daniel L. Civco, William C. Kennard, Michael Wm. Lefor
Storrs Agricultural Experiment Station
No abstract provided.
Volume 4, Number 1 (January 1980), The Solar Ocean Energy Liaison
Volume 4, Number 1 (January 1980), The Solar Ocean Energy Liaison
The OTEC Liaison
No abstract provided.
Influence Of Dredging And High Discharge On The Ecology Of Black Canyon, Larry J. Paulson, Theron G. Miller, John R. Baker, U.S. Water And Power Resources Service
Influence Of Dredging And High Discharge On The Ecology Of Black Canyon, Larry J. Paulson, Theron G. Miller, John R. Baker, U.S. Water And Power Resources Service
Publications (WR)
The Water and Power Resources Service is considering dredging in Black Canyon to create a larger forebay to accommodate higher peak discharges and reverse flows for proposed modifications to Hoover Dam.
The Black Canyon area from Hoover Dam to Willow Beach supports a heavily utilized trout fishery and is important habitat for the razorback sucker (Xyrauchen texanus) and possibly bonytail chub (Gila elegans).
The Water and Power Resources Service initiated this investigation to determine what effect dredging and higher peak-discharges would have on the ecology of Black Canyon.
The Limnological Status Of Lake Mead And Lake Mohave Under Present And Future Powerplant Operations Of Hoover Dam, Larry J. Paulson, John R. Baker, James E. Deacon, U.S. Water And Power Resources Service
The Limnological Status Of Lake Mead And Lake Mohave Under Present And Future Powerplant Operations Of Hoover Dam, Larry J. Paulson, John R. Baker, James E. Deacon, U.S. Water And Power Resources Service
Publications (WR)
The ever-increasing demand for energy in the southwest has led to a search for additional sources of power generation. Coal-fired powerplants currently provide most of the baseline energy in the southwest, but this must be supplemented with hydroelectric power during periods of peak demand. In order to provide additional peaking power, the U.S. Bureau of Reclamation is considering a number of projects to modify existing hydroelectric facilities, or add new facilities in the Lake Mead Recreation Area.
The Hoover Powerplant Modification Feasibility Investigation was authorized by Congress on December 16, 1975 to determine the feasibility of: (i) adding one or …
An Analysis Of The Irreversible Thermodynamics Model For Coupled Heat And Moisture Transport Phenomena In Unsaturated Porous Media, J. A. Havens
Technical Reports
The Irreversible Thermodynamics-based model for the description of coupled heat and moisture transfer, attributed to Cary and Taylor, was analyzed. The transport coefficients appearing in the model equations were independently determined, and the equations were numerically integrated to predict temperature and moisture content profiles for a closed system of water unsaturated glass beads. An experimental investigation of the moist glass beads medium provided measurements of steady-state profiles of local temperatures and moisture content. These data, when compared with model predictions, indicated the validity of the Irreversible Thermodynamics approach. The coupling coefficient relating thermal gradients to moisture flux was found to …
Use Of Extreme Value Theory In Estimating Flood Peaks From Mixed Populations, Ronand V. Canfield, D. R. Olsen, R. H. Hawkins, T. L. Chen
Use Of Extreme Value Theory In Estimating Flood Peaks From Mixed Populations, Ronand V. Canfield, D. R. Olsen, R. H. Hawkins, T. L. Chen
Reports
The flood magnitude for a given frequency or return period is estimated by fitting a probability distribution to the historical annual flood series. The log-Pearson type III distribution has been selected by the Water Resources Council for general use by the federal government, but practitioners should examine an annual flood series and use alternative distributions where they will produce better estimates. Empirical goodness of fit is one criterion for choosing a distribution, but the reasonableness of the assumptions theoretically associated with the form of the distribution should also be considered. In theory, extreme-value distributions are particularly applicable to flow series …
Municipal Water Resources Analysis For Area Potentially Impacted By Mx Missile Complex In Utah, Trevor C. Hughes, V. A. Narasimhan, William J. Grenney, L. Douglas James
Municipal Water Resources Analysis For Area Potentially Impacted By Mx Missile Complex In Utah, Trevor C. Hughes, V. A. Narasimhan, William J. Grenney, L. Douglas James
Reports
Scope of Report: This report analyzes the impact of the proposed MX Missile complex upon existing municipal water supply and waste treatment systems serving selected communitites either near the perimeter or within the Utah portion of the proposed MX complex boundary. As can be seen from the location map in Figure 1, possible sites for elements within the total MX missile complex have been identified in 14 Utah desert valleys in the five counties, from north to south, of Tooele, Juab, Millard, Beaver, and Iron. The 60,000 people, who live in these counties according to the 1975 census, are largely …
Evaluation Of Livestock Runoff As A Source Of Water Pollution In Northern Utah, Stephen T. Wieneke, Dennis B. George, Daniel S. Filip, Brad Finney
Evaluation Of Livestock Runoff As A Source Of Water Pollution In Northern Utah, Stephen T. Wieneke, Dennis B. George, Daniel S. Filip, Brad Finney
Reports
A mathematical model was developed to predict the impact of dairy and beef cattle feedlot runoff on receiving streams. The mathematical expressions used in the model describing runoff quantity and quality were not only a function of single rain or snow precipitation events but also consecutive events prior to the runoff occurrence. The runoff quantity and quality were also a function of feedlot surface. Computer simualtions indicate that pollutants from feedlot runoff may have a significant impact on receiving streams during winter months. Runoff from feedlots located within the study area, however, had little impact on water quality in the …
Flood Damage Mitigation In Utah, L. Douglas James, Dean T. Larson, Daniel H. Hoggan, Terrence L. Glover
Flood Damage Mitigation In Utah, L. Douglas James, Dean T. Larson, Daniel H. Hoggan, Terrence L. Glover
Reports
Utah is subjected to flash flooding in mountain canyons, mudflows and shallow water flooding on lowlands at the canyon outlets, storm water flooding after thunderstorms in urban areas, and prolonged periods of inundation in certain lowland areas during snowmelt periods. In response to these problems, individuals are making private land use and flood proofing decisions, larger communities have storm water collection programs, three federal agencies are involved in structural flood control, and the Federal Emergency management Agency is managing a National Flood Insurance Program designed to promote community floodplain management efforts. A framework was deceloped of the dynamically interactive feedback …
Principles Of Lake Quality Management, D. B. Porcella
Management Of The Hydrologic System In Areas Subject To Coal Mining Activities, Rollin H. Hotchkiss, Eugene K. Israelsen, J. Paul Riley
Management Of The Hydrologic System In Areas Subject To Coal Mining Activities, Rollin H. Hotchkiss, Eugene K. Israelsen, J. Paul Riley
Reports
Publicity given to the detrimental effects of mining activities on the environment has tended to overshadow somewhat the hydrologic opportunities and benfits that could be associated with these activities. For example, many areas disturbed by surface mining have proved to be excellent recharge areas for groundwater aquifers. The degree to which mine sites can be exploited to improve management of the hydrologic system depends on both the local geology and the mining techniques used. The report examines the effects of present mining activities on the associated hydrology system, and identifies specific mining procedures and management techniques which not only minimize …
Evaluation Of Particular Mulches As Plant Growth Media And Erosion Inhibitors, C. Earl Israelson, William F. Campbell, Eugene K. Israelsen, Ronald V. Canfield, David Ianson
Evaluation Of Particular Mulches As Plant Growth Media And Erosion Inhibitors, C. Earl Israelson, William F. Campbell, Eugene K. Israelsen, Ronald V. Canfield, David Ianson
Reports
Introduction: Increasing public awareness of the desireability of protecting the environment from soil erosion caused by wind and water has centered attention on large construction projects such as highways and housing subdivisions, as well as on individual building sites and parking lots. If unattended, sediment produced from these areas pollutes surface water, restricts drainage, fills reservoirs, damages adjacent land, and upsets the natual ecology of lakes and streams. The search continues for products and practices that will prevent or lessen the amount of sediment leaving construction sites. Products currently in use include chemical as well as organic materials, and they …
Vulnerability Of Water Supply Systems To Droughts, David S. Bowles, Trevor C. Hughes, W. Robert James, Donald T. Jensen, Frank W. Haws
Vulnerability Of Water Supply Systems To Droughts, David S. Bowles, Trevor C. Hughes, W. Robert James, Donald T. Jensen, Frank W. Haws
Reports
This summary completion report describes the project work completed in three areas: 1) the development and preliminary testing of drought severity and vulnerability indices, 2) the impacts of Utah's 1977 drought, and 3) an operation comparison of stochastic streamflow models. The drought indices were evaluated for three municipal and three irrigation water supply systems in Utah. It was concluded that a continuous loss function to define the effects of water shortage would be more appropriate than the existing assumption that drought-related lossed occur suddenly at a certain degree of water shortage. Information on the impacts of Utah's 1977 drought was …
Development Of Procedures To Evaluate Salinity Management Strategies In Irrigation Return Flows, V. A. Narasimhan, A. Leon Huber, J. Paul Riley, J. J. Jurinak
Development Of Procedures To Evaluate Salinity Management Strategies In Irrigation Return Flows, V. A. Narasimhan, A. Leon Huber, J. Paul Riley, J. J. Jurinak
Reports
The salinity added irrigation return flows is a major problem in rivers draining agricultural lands throughout the arid regions of the world, and many irrigation water management alternatives have been proposed for reducing downstream salinity problems. The merits of these alternatives, however, can only be judged from reliable information on their actual effects on the salinity in rivers receiving the drainage water and the water withdrawn from the river by downstream users. Hydrosalinity models are widely used to estimate these effects to guide the selection of a policy on management of irrigation return flows. The purpose of this research was …
Evaluation Of Legibility Of Reflectorized License Plates, C. Earl Israelsen, Ronald V. Canfield
Evaluation Of Legibility Of Reflectorized License Plates, C. Earl Israelsen, Ronald V. Canfield
Reports
The rainfall simulator at the Utah Water Research Laboratory, Utah State University, Logan, Utah, was utilized in evaluating various types of license plates. This unique facility enables the production of controlled uniform rainfall inside the laboratory. For this experiment, rainfall rates of 0" (dry), 1/2" and 2" per hour were used to compare reflective performance of reflective sheeting (RS), beads-on-paint (BOP), and new paint (NP) license plates under dark nighttime conditions. Both new and used license plates were evaluted. The three types of new plates were made and embossed at the Idaho State Prison using stanard state manufacturing procedures. The …
Model Of Drawdown In Well Fields Influenced By Boundaries: Technical Description And User's Manual, Najwan T. Shareef, David S. Bowles
Model Of Drawdown In Well Fields Influenced By Boundaries: Technical Description And User's Manual, Najwan T. Shareef, David S. Bowles
Reports
This model is designed to calculate the drawdown of a piezometric surface or water table at a given point of interest in a well field. Many different well and aquifer hydraulic conditions can be considered. The effect of field boundaries is solved by the image well theory. Many points of interest, well (recharge or injection), boundaries (barrier or recharge), and time increments as well as constant and variable pumping rate case have been included in the model. The drawdown at a point of interest can be decomposed into the following compenents for each real well due to the effect of: …
Water Demand At Recreation Developments, Simon Lam, Trevor C. Hughes
Water Demand At Recreation Developments, Simon Lam, Trevor C. Hughes
Reports
Design criteria for drinking water systems at recreation developments, particularly summer home type, cause frequent confrontations with regulatory agencies. Developers claim extremely low water use rates due to low occupancy rates, but regulatory agencies are concerned about changes over time from essentially weekend use to more permanent residency and also about occasional peak day water demands similar to those of municipal systems. Little empirical data have been available to resolve such questions. This study included the gathering and analysis of both historic water use measurements and additional daily and instantaneous measurements during peak seasons at 11 Utah and one Wyoming …
A Preliminary Study On Expanding And Financing State Water Development, Daniel H. Hoggan, Kirk R. Kimball, Jay M. Bagley
A Preliminary Study On Expanding And Financing State Water Development, Daniel H. Hoggan, Kirk R. Kimball, Jay M. Bagley
Reports
The effects of recent energy price increases, domestic inflation rates, financial market fluctuations, and changing public attitudes toward federally sponsored water resource development and management have brought economic and financial consideratiosn to the forefront of Western water management issues. Recently enacted federal policies place increased responsibility on the states and localities for the development and management of their water resources. A response common to many of the western states has been to stengthen traditional, and often small, water financing and development programs. In creating and sustaining such a posture, however, state governments must address the important questions pertaining to the …
Weather Modification By Cloud Seeding, Arnett S. Dennis
Weather Modification By Cloud Seeding, Arnett S. Dennis
Reports
It is an understatement to say that people are confused about cloud seeding. While it has been called "the crime of the century" and outlawed in Pennsylvania, the governments of the dry, western part of the United States continue to spend tax revenues on cloud seeding to increase water supplies. During the past five years, I have talked with officials responsible for decisions regarding cloud seeding programs in about 15 states of the U.S.A., in a dozen other countries, and in the World Meteorological Organization. Some of the officials involved are experts in atmospheric physics, but most are not. Members …
Laster Photoacoustic Detection Of Water Pollutants - Phase I, Gregory J. Salamo
Laster Photoacoustic Detection Of Water Pollutants - Phase I, Gregory J. Salamo
Technical Reports
No abstract provided.
A Limnological Study Of 43 Selected Maine Lakes, Derrill J. Cowing, Matthew Scott
A Limnological Study Of 43 Selected Maine Lakes, Derrill J. Cowing, Matthew Scott
Maine Collection
A Limnological Study of 43 Selected Maine Lakes
by Derrill J. Cowing and Matthew Scott
U.S. Geological Survey : Water-Resources Investigations 80-69
Prepared in cooperation with the Maine Department of Environmental Protection
U.S. Geological Survey, 26 Ganneston Drive, August, Maine 04330