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Water quality

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Articles 811 - 840 of 903

Full-Text Articles in Physical Sciences and Mathematics

Conflicts Between Water Rights Administration And Water Quality Protection, Jan D. Laitos Jun 1987

Conflicts Between Water Rights Administration And Water Quality Protection, Jan D. Laitos

Water as a Public Resource: Emerging Rights and Obligations (Summer Conference, June 1-3)

43 pages.


The Use Of “Nonnavigable” Water For Public Purposes, John E. Thorson Jun 1987

The Use Of “Nonnavigable” Water For Public Purposes, John E. Thorson

Water as a Public Resource: Emerging Rights and Obligations (Summer Conference, June 1-3)

18 pages.

Contains references.


Agenda: Water As A Public Resource: Emerging Rights And Obligations, University Of Colorado Boulder. Natural Resources Law Center Jun 1987

Agenda: Water As A Public Resource: Emerging Rights And Obligations, University Of Colorado Boulder. Natural Resources Law Center

Water as a Public Resource: Emerging Rights and Obligations (Summer Conference, June 1-3)

Conference organizers and/or faculty included University of Colorado School of Law professors Lawrence J. MacDonnell, David H. Getches, and Charles F. Wilkinson.

This conference focused on the legal rights associated with a broad range of public uses and interests in water including recreation, fish and wildlife protection, and water quality. Evolving legal areas such as the public trust doctrine, instream flow laws, federal reserved rights, and wetlands protection were discussed.

Water as a Public Resource: Emerging Rights and Obligations considered the extension of the public trust doctrine to areas previously not covered by this concept, as well as developments in …


Water Development, Wildlife And Recreation: Panel, Charles W. Howe Jun 1987

Water Development, Wildlife And Recreation: Panel, Charles W. Howe

Water as a Public Resource: Emerging Rights and Obligations (Summer Conference, June 1-3)

32 pages.

Contains 5 pages of footnotes and tables and 2 pages of references.

Includes a paper: "Option Value: Empirical Evidence from a Case Study of Recreation and Water Quality" by Douglas A. Greenley, Richard G. Walsh and Robert A. Young. A final version of this paper was published in 96(4) The Quarterly Journal of Economics (1981): 657-673.


Chemical Properties Of Soils And Streams In Natural And Disturbed Forest Ecosystems In The Ouachita Mountains, R. S. Beasley, E. L. Miller, E. R. Lawson Jun 1987

Chemical Properties Of Soils And Streams In Natural And Disturbed Forest Ecosystems In The Ouachita Mountains, R. S. Beasley, E. L. Miller, E. R. Lawson

Arkansas Water Resources Center Technical Reports

One year of pre-harvest and five years of post-harvest water chemistry data were collected and analyzed for N03-N, TKN, TP, OP, K and Ca on nine small watersheds in the Ouachita Mountains of central Arkansas. Gross exports of all nutrients except TKN were significantly increased by cl earcutting followed by mechanical site preparation and broadcast burning of slash. Discharge-weighted nutrient concentrations were increased only for OP, K and Ca. The treatment effect was brief, lasting only one year. The first harvest of a selection system regime had no measurable effect on gross losses or concentrations of nutrients. Precipitation chemistry measurements …


Raw Nutrient Data, Leanna Gail May 1987

Raw Nutrient Data, Leanna Gail

Publications (WR)

Data collected at various stations around Lake Mead. Includes information about substances present in various water samples.


1987 File Geodatabase Containing Photo Point Locations, Aerial Photos, And Flight Maps, City Of Tampa Department Of Sanitary Sewers Bay Study Group, Pete Reehling, Richard Mckenzie Jan 1987

1987 File Geodatabase Containing Photo Point Locations, Aerial Photos, And Flight Maps, City Of Tampa Department Of Sanitary Sewers Bay Study Group, Pete Reehling, Richard Mckenzie

Data Sets

The Bay Study Group was created by the City of Tampa in 1976 to monitor the effects of pollution abatement that occurred in Hillsborough Bay when the city’s wastewater treatment plant was upgraded from primary to advanced treatment in 1979. The Bay Study Group documented a remarkable restoration of water quality parameters and biological indicators in Hillsborough Bay from the mid 1980s until 2009, when it was disbanded. This zip Geodatabase file contains the photo point locations, aerial photos, and flight maps for the year 1987.


1987 File Geodatabase Containing Aerial Photos, Pete Reehling, Richard Mckenzie, City Of Tampa Department Of Sanitary Sewers Bay Study Group Jan 1987

1987 File Geodatabase Containing Aerial Photos, Pete Reehling, Richard Mckenzie, City Of Tampa Department Of Sanitary Sewers Bay Study Group

Images

The Bay Study Group was created by the City of Tampa in 1976 to monitor the effects of pollution abatement that occurred in Hillsborough Bay when the city’s wastewater treatment plant was upgraded from primary to advanced treatment in 1979. The Bay Study Group documented a remarkable restoration of water quality parameters and biological indicators in Hillsborough Bay from the mid 1980s until 2009, when it was disbanded. This zip Geodatabase file contains the aerial photos for the year 1987.


Pollution In Parks: A Publication Of The National Park Service, Richard H. Briceland Sep 1986

Pollution In Parks: A Publication Of The National Park Service, Richard H. Briceland

External Development Affecting the National Parks: Preserving "The Best Idea We Ever Had" (September 14-16)

28 pages (includes illustrations).

Contains references.


External Development: Turning Problems Into Opportunities, T. Destry Jarvis Sep 1986

External Development: Turning Problems Into Opportunities, T. Destry Jarvis

External Development Affecting the National Parks: Preserving "The Best Idea We Ever Had" (September 14-16)

9 pages.


After The Concrete Sets: The Future Role Of The Bureau Of Reclamation In Western Water Management, John D. Leshy Jun 1986

After The Concrete Sets: The Future Role Of The Bureau Of Reclamation In Western Water Management, John D. Leshy

Western Water: Expanding Uses/Finite Supplies (Summer Conference, June 2-4)

23 pages.

Contains references.


Innovative Approaches To Water Allocation: The Potential For Water Markets, Charles W. Howe Jun 1986

Innovative Approaches To Water Allocation: The Potential For Water Markets, Charles W. Howe

Western Water: Expanding Uses/Finite Supplies (Summer Conference, June 2-4)

20 pages.


Long-Term Effects Of Tillage On The Retention And Transport Of Soil Water, H. D. Scott, L. S. Wood, W. M. Miley Jun 1986

Long-Term Effects Of Tillage On The Retention And Transport Of Soil Water, H. D. Scott, L. S. Wood, W. M. Miley

Arkansas Water Resources Center Technical Reports

Quantitative measurements were made of the physical and chemical properties of two virgin prairie soils, Crowley and Jay, that remain in their native Arkansas environments and of similar soils that had been tilled extensively. Comparisons were made of soil properties at several depths. When compared with the tilled soils the virgin soils had higher organic matter contents, saturated hydraulic conductivities and water retained at several applied pressures. Bulk densities and hydraulic resistances were lower in the virgin soils. For the Crowley silt loam, values of pH and elemental contents of the virgin soil were higher than those of the tilled …


Local Water Resource Information Management System, David G. Parker, Sandra C. Parker Jun 1986

Local Water Resource Information Management System, David G. Parker, Sandra C. Parker

Arkansas Water Resources Center Technical Reports

A Beaver Lake water quality database has been designed as a relational database. It has been implemented using software called R:base 5000, a system available for microcomputers using MS- or PC- DOS operating systems. The data in the database include that concerned with the author(s), title, date of publication, agency doing the study, agency funding the study and complete reference for the document. Other aspects of the database are designed to allow retrievals based on any author, study dates, parameters measured and keywords.


1986 File Geodatabase Containing Photo Point Locations, Aerial Photos, And Flight Maps, City Of Tampa Department Of Sanitary Sewers Bay Study Group, Pete Reehling, Richard Mckenzie Jan 1986

1986 File Geodatabase Containing Photo Point Locations, Aerial Photos, And Flight Maps, City Of Tampa Department Of Sanitary Sewers Bay Study Group, Pete Reehling, Richard Mckenzie

Data Sets

The Bay Study Group was created by the City of Tampa in 1976 to monitor the effects of pollution abatement that occurred in Hillsborough Bay when the city’s wastewater treatment plant was upgraded from primary to advanced treatment in 1979. The Bay Study Group documented a remarkable restoration of water quality parameters and biological indicators in Hillsborough Bay from the mid 1980s until 2009, when it was disbanded. This zip Geodatabase file contains the photo point locations, aerial photos, and flight maps for the year 1986.


1986 File Geodatabase Containing Aerial Photos, Pete Reehling, Richard Mckenzie, City Of Tampa Department Of Sanitary Sewers Bay Study Group Jan 1986

1986 File Geodatabase Containing Aerial Photos, Pete Reehling, Richard Mckenzie, City Of Tampa Department Of Sanitary Sewers Bay Study Group

Images

The Bay Study Group was created by the City of Tampa in 1976 to monitor the effects of pollution abatement that occurred in Hillsborough Bay when the city’s wastewater treatment plant was upgraded from primary to advanced treatment in 1979. The Bay Study Group documented a remarkable restoration of water quality parameters and biological indicators in Hillsborough Bay from the mid 1980s until 2009, when it was disbanded. This zip Geodatabase file contains the aerial photos for the year 1986.


Innovative Transfer And Exchange Plans, Glenn E. Porzak Oct 1985

Innovative Transfer And Exchange Plans, Glenn E. Porzak

Colorado Water Issues and Options: The 90's and Beyond: Toward Maximum Beneficial Use of Colorado's Water Resources (October 8)

36 pages (includes maps).

Contains footnotes (page 32).


Development Of Optimal Sustained Yield Groundwater Withdrawal Strategies For The Boeuf-Tensas Basin In Arkansas, Richard C. Peralta, Bithin Datta, Jamal Solaimanian, Paul J. Killian, Amin Yazdanian Aug 1985

Development Of Optimal Sustained Yield Groundwater Withdrawal Strategies For The Boeuf-Tensas Basin In Arkansas, Richard C. Peralta, Bithin Datta, Jamal Solaimanian, Paul J. Killian, Amin Yazdanian

Arkansas Water Resources Center Technical Reports

The goal of this study ia to develop sustained yield pumping (discharge via wells) strategies for the Boeuf-Tensaa Basin area. The demarkation of the Boeut-Tensas area is described in the Arkansas State Vater Plan (Arkansas Soil and Water Conservation Commission. 1984). The Boeuf-Teneas Basin ia a highly developed agricultural region located in the southeast corner of Arkansas. Hydrogeologically. it is part of the Bayou Bartholomew/Alluvial Aquifer System (Broom and Reed. 1973). Before describing the Boeuf-Tensas Basin, the Bayou Bartholomew region should be discussed.


Projections Of Agricultural And Fish And Wildlife Water Demand In The Ouachita River Basin: A Linear Programming Approach, Mark J. Cochran, Mike Tessaro, J. Martin Redfern, Larry Childress, E. Moye Rutledge, Rob Raskin, Robert N. Shulstad Jul 1985

Projections Of Agricultural And Fish And Wildlife Water Demand In The Ouachita River Basin: A Linear Programming Approach, Mark J. Cochran, Mike Tessaro, J. Martin Redfern, Larry Childress, E. Moye Rutledge, Rob Raskin, Robert N. Shulstad

Arkansas Water Resources Center Technical Reports

The availability of an abundant water supply has been a major resource of the Ouachita River Basin. In recent years, water requirements for a number of uses have increased, raising the concern that future water shortages could occur in the basin. The purpose of the study reported here was to estimate future water demand for irrigation, commercial fisheries, and fish and wildlife uses.


Federal/State Relations In Theory And Practice: A Sovereignty Mismatch, Charles T. Dumars Jun 1985

Federal/State Relations In Theory And Practice: A Sovereignty Mismatch, Charles T. Dumars

Western Water Law in Transition (Summer Conference, June 3-5)

12 pages.

Contains footnotes.


Western Ground Water Law: Overview And Recent Developments, J. David Aiken Jun 1985

Western Ground Water Law: Overview And Recent Developments, J. David Aiken

Western Water Law in Transition (Summer Conference, June 3-5)

27 pages.


Agenda: Western Water Law In Transition, University Of Colorado Boulder. Natural Resources Law Center Jun 1985

Agenda: Western Water Law In Transition, University Of Colorado Boulder. Natural Resources Law Center

Western Water Law in Transition (Summer Conference, June 3-5)

Conference organizers and/or faculty included University of Colorado School of Law professors James N. Corbridge, Jr., Lawrence J. MacDonnell, Richard B. Collins, David H. Getches and Charles F. Wilkinson.

The prior appropriation doctrine has governed the allocation and use of water in the western United States since the 1850s. The shifting nature of water demand is bringing about changes in the traditional legal system. This conference will consider the fundamental principles of the prior appropriation doctrine together with the important new developments in the law now underway throughout the West.


Administering Water Rights: The Permit System, Lawrence J. Wolfe Jun 1985

Administering Water Rights: The Permit System, Lawrence J. Wolfe

Western Water Law in Transition (Summer Conference, June 3-5)

69 pages.

Contains references.


Selecting Non-Point Source Pollution Treatment Practices Using Linear Optimization, John Gardy Garland Iii Apr 1985

Selecting Non-Point Source Pollution Treatment Practices Using Linear Optimization, John Gardy Garland Iii

Civil & Environmental Engineering Theses & Dissertations

This paper provides a case study application of a linear optimization program as a water quality management tool. The optimization program seeks to minimize the cost of nonpoint source pollution control by selecting the best combination of pollution control management practices for Hampton, Virginia. The management practice options are grass swale roadways, porous pavers, ponds, detention basins and fertilizer management education. Management practice selection is limited by constraints on land-use and water quality. Pollutants evaluated are total nitrogen, total phosphorus, suspended solids, fecal coliforms and biochemical oxygen demand (five-day). The value in the water quality constraints for pollution loading on …


Water Quality For Irrigation, P R. George Jan 1985

Water Quality For Irrigation, P R. George

Journal of the Department of Agriculture, Western Australia, Series 4

Although irrigation and salinity problems are frequently inseperable, there is a range of management methods that can be used to handle marginal quality water. Freuently these methods are simple, but require careful planning.

The wide range in tolerance of crops to salinity can be exploiter to ensure that appropriate crops are selected for the water available.

Because crops vary in their sensitivity to salt uptake in the leaves or the roots, watering methods can be changed to avoid problems. For profitable production enough water should be applied to ensure adequate water is available for plant growth as well as to …


Groundwater Quality And Mineral Deposits Relationships In The Ozark Mountains, Kenneth F. Steele Sep 1984

Groundwater Quality And Mineral Deposits Relationships In The Ozark Mountains, Kenneth F. Steele

Arkansas Water Resources Center Technical Reports

Ninety-nine groundwater sites were sampled in northern Arkansas in order to determine the effect of local manganese, phosphate, pyrite, lead-zinc and uranium mineralization on the groundwater chemistry. Most of this study (75 springs) was concentrated in the Batesville manganese district. Hydrogeochemical exploration for these types of manganese deposits appears possible with 44 percent of the springs within 2000 feet of mineralization having anomalous metal concentrations (especially manganese). Because only a few springs were sampled in the remaining areas, the results are not conclusive; however, only the pyrite and small lead-zinc deposit would appear worthy of additional investigation. None of the …


A Statistical Comparison Of A Direct Filtration And A Conventional Water Treatment Facility In The Intermountain Region, Susan K. Burns, V. Dean Adams Sep 1984

A Statistical Comparison Of A Direct Filtration And A Conventional Water Treatment Facility In The Intermountain Region, Susan K. Burns, V. Dean Adams

Reports

Interest in low-cost direct filtration facilities and their effectiveness in treating the potable water sources of the Intermountain Region is increasing as the need for treated water supplies increase. Direct filtration is a water treatment scheme which does not include sedimentation and in some cases flocculation. Compared to conventional treatment, direct filtration has lowered capital costs, reduced space requirement, and decreased sludge quantities. Moreover, the direct filtration process may offer large reductions in coagulant dosages and costs.

Currently information comparing a direct filtration system to a conventional water treatment system in the Intermountain area is not readily available. The specific …


Precedings Of Arkansas Lakes Symposium Limnological Studies Of Lake Chicot, Arkansas, Joe F. Nix, Frank R. Schiebe Aug 1984

Precedings Of Arkansas Lakes Symposium Limnological Studies Of Lake Chicot, Arkansas, Joe F. Nix, Frank R. Schiebe

Arkansas Water Resources Center Technical Reports

Lake Chicot is an oxbow lake that was created more than 600 years ago by the meandering of the Mississippi River. It is located in Chicot county in southeastern Arkansas adjacent to the present Mississippi River. As the largest natural lake in Arkansas it earned an early reputation for its good fishing and recreational value. Development of a levee system forced the enlargement of the lakes watershed to its present 350 square miles. Initially this alteration affected only the volume flow through the lake, drastically reducing the water residence time. Because the watershed was located in one of the most …


Las Vegas Wash Multispectral Scanner Survey, T. H. Mace, M. V. Olsen, Environmental Protection Agency Feb 1984

Las Vegas Wash Multispectral Scanner Survey, T. H. Mace, M. V. Olsen, Environmental Protection Agency

Publications (WR)

At the request of the U.S. Bureau of Reclamation, Boulder City, Nevada, the U.S. Environmental Protection Agency's Environmental Monitoring Systems Laboratory at Las Vegas collected multispectral scanner imagery of Las Vegas Wash on October 1, 1982. A combined maximum likelihood classification and editing procedure was used to classify the multispectral scanner imagery into 12 categories of land cover. The classification identified four categories of marsh vegetation, one category of riparian, two categories of mixed scrub, and two desert categories. Turbid water and cultivated land formed an "other" category. Area tabulations were formed by georeferencing the classification to the Universal Transverse …


Water Quality Evaluation Yatesville Lake Project: Volume 1, Stephen B. Sullivan, Edward G. Foree, John S. Tapp Jan 1984

Water Quality Evaluation Yatesville Lake Project: Volume 1, Stephen B. Sullivan, Edward G. Foree, John S. Tapp

KWRRI Research Reports

Point sources of pollution identified in the Blaine Creek watershed area consisted of oil and gas facility sources and mine related sources. A total of 493 point sources of pollution were inventoried which included 167 oil and gas related sources, 321 mine sediment structures, and 5 hollow fill groundwater seeps. The highest concentration of these point sources of pollution occurred in the south to southwest portion of the watershed in the area proximate to the Martha Field.

Adverse impacts to surface and groundwaters resulting from the 326 mine and groundwater point sources of pollution identified did not appear significant as …