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Articles 1 - 8 of 8
Full-Text Articles in Physical Sciences and Mathematics
Kinetics And Mechanisms Of Atrazine Adsorption And Desorption In Soils Under No-Till And Conventional Management, V. P. Evangelou, W. W. Witt, E. Portig, Mike Barrett
Kinetics And Mechanisms Of Atrazine Adsorption And Desorption In Soils Under No-Till And Conventional Management, V. P. Evangelou, W. W. Witt, E. Portig, Mike Barrett
KWRRI Research Reports
Both soils (Maury silt loam and Sadler) exhibited three apparent mechanisms of atrazine adsorption. The first two mechanisms were very rapid (10 minutes) and were assigned to soil-clay surface adsorption reactions via hydrogen bonding. The quantity of atrazine involved in these two reactions for the 0.5 mg/1 solution atrazine varied, depending on the soil, from 67 μg/100 g clay to 219 μg/100 g clay. The reason there were two possible atrazine sinks in this range of atrazine adsorption was believed to be the presence of two types of reactive surfaces, the clay inorganic phase and the organic carbon phase. The …
Regulation Of Ground Water In Salt Lake Valley, Robert L. Morgan
Regulation Of Ground Water In Salt Lake Valley, Robert L. Morgan
Innovation in Western Water Law and Management (Summer Conference, June 5-7)
24 pages (includes illustrations and maps).
Contains references.
Agenda: Innovation In Western Water Law And Management, University Of Colorado Boulder. Natural Resources Law Center
Agenda: Innovation In Western Water Law And Management, University Of Colorado Boulder. Natural Resources Law Center
Innovation in Western Water Law and Management (Summer Conference, June 5-7)
Conference organizers and/or faculty included University of Colorado School of Law professors Lawrence J. MacDonnell, David H. Getches, Charles F. Wilkinson and Richard B. Collins.
Pressures of population, drought, and changing water use have provided the impetus for numerous innovations in water law and management in recent years. The Center's annual conference June 5-7, 1991, will look at innovation and change in five areas--water planning, special water management areas, negotiated settlements of tribal water rights, conjunctive use of ground and surface water, and public values in water decision making. Each session will begin with talks by experts from several western …
Determination Of The Abient Toxicity Of The Tailwater Of Nimrod Lake, John T. Knight
Determination Of The Abient Toxicity Of The Tailwater Of Nimrod Lake, John T. Knight
Technical Reports
The objective of this research was to determine if ambient toxicity exists in the receiving stream below a reservoir in which water from the hypolimnion is released. The Ceriodaphnia 7-day test was utilized to determine if toxicity existed. This test is routinely used in the monitoring of municipal and industrial effluent. It has also been utilized in determining if ambient toxicity exists within receiving streams. Nimrod Lake is a flood control impoundment on the Fourche LaFave River in west central Arkansas. The literature suggest that during stratification the hypolimnetic release contains high levels of iron, manganese, ammonia and sulfide during …
The Association Of Water Quality Parameters, Geological Substrates And Periphyton Community Structure, Richard L. Meyer, Julia Christensen Eichman
The Association Of Water Quality Parameters, Geological Substrates And Periphyton Community Structure, Richard L. Meyer, Julia Christensen Eichman
Technical Reports
This research was designed to understand the structure of epilithic diatom assemblage of a first-to-third order stream system which has minimal variance in nutrient concentration, but significant differences in geomorphological character. The primary objective was to determine the importance of geological substrate on the structure of the diatom assemblages. The second objective was to examine the effect of flow on these assemblages, and the third part of the research was to develop a seasonal model of temporal and spatial annual succession. The temporal and spatial models represent the effect of seasons, stream order, substrate characteristics, storm events, and periods of …
Long-Term Trends Of Nitrogen Loading, Water Quality And Biological Indicators In Hillsborough Bay, Florida, J.O. R. Johansson
Long-Term Trends Of Nitrogen Loading, Water Quality And Biological Indicators In Hillsborough Bay, Florida, J.O. R. Johansson
Reports
This report addresses general background information on Hillsborough Bay water quality, compares long-term nitrogen loading trends to water quality indicators, and recommends management options for improving bay conditions.
1991 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
1991 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 1991.
1991 File Geodatabase Containing Aerial Photos, Pete Reehling, Richard Mckenzie, City Of Tampa Department Of Sanitary Sewers Bay Study Group
1991 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 1991.