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Book Use of Wetlands to Reduce Nitrogen Loads in the Mississippi Atchafalaya River Basin

Download or read book Use of Wetlands to Reduce Nitrogen Loads in the Mississippi Atchafalaya River Basin written by Rachel Susanna Doughty and published by . This book was released on 2003 with total page 174 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Nutrient Control Actions for Improving Water Quality in the Mississippi River Basin and Northern Gulf of Mexico

Download or read book Nutrient Control Actions for Improving Water Quality in the Mississippi River Basin and Northern Gulf of Mexico written by National Research Council and published by National Academies Press. This book was released on 2009-07-13 with total page 91 pages. Available in PDF, EPUB and Kindle. Book excerpt: A large area of coastal waters in the northern Gulf of Mexico experiences seasonal conditions of low levels of dissolved oxygen, a condition known as hypoxia. Excess discharge of nutrients into the Gulf of Mexico from the Mississippi and Atchafalaya rivers causes nutrient overenrichment in the gulf's coastal waters and stimulates the growth of large algae blooms. When these algae die, the process of decomposition depletes dissolved oxygen from the water column and creates hypoxic conditions. In considering how to implement provisions of the Clean Water Act to strengthen nutrient reduction objectives across the Mississippi River basin, the U.S. Environmental Protection Agency (EPA) requested advice from the National Research Council. This book represents the results of the committee's investigations and deliberations, and recommends that the EPA and U.S. Department of Agriculture should jointly establish a Nutrient Control Implementation Initiative to learn more about the effectiveness of actions meant to improve water quality throughout the Mississippi River basin and into the northern Gulf of Mexico. Other recommendations include how to move forward on the larger process of allocating nutrient loading caps-which entails delegating responsibilities for reducing nutrient pollutants such as nitrogen and phosphorus-across the basin.

Book Nitrogen in the Mississippi Basin

Download or read book Nitrogen in the Mississippi Basin written by and published by . This book was released on 2000 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Mississippi River Reservoir Benefit Study

Download or read book Mississippi River Reservoir Benefit Study written by and published by . This book was released on 1963 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book A Suitability Analysis of the Wetlands Along the Middle Mississippi River Floodplain for Riverine Nitrate Attenuation

Download or read book A Suitability Analysis of the Wetlands Along the Middle Mississippi River Floodplain for Riverine Nitrate Attenuation written by Noah Rocco Scalero and published by . This book was released on 2020 with total page 110 pages. Available in PDF, EPUB and Kindle. Book excerpt: Persistently elevated nitrogen loads discharged to the Gulf of Mexico from the Mississippi and Atchafalaya rivers have been shown by a vast body of literature to be the cause of recurring hypoxic conditions in the Gulf of Mexico. Riverine wetlands have been shown to be important ecosystems capable of substantially reducing nitrogen loads delivered downstream through N removal processes including denitrification, anaerobic ammonium oxidation, and plant uptake. In order to assess the relative potential of wetland sites for nitrogen attenuation, a suitability analysis was performed to identify the relative nitrogen attenuation potential of wetlands within the Middle Mississippi River (MMR) floodplain. For this assessment, the literature on nitrogen cycling in riverine wetlands was used to identify variables which are associated with denitrification potential. Data for these variables were sourced from publicly available geospatial datasets and floodplain inundation frequency estimates using a hydraulic model. The variables compiled for this analysis included flood frequency, soil drainage class, soil hydrologic class, soil pH, soil texture, land use, and soil organic carbon. Principle component analysis was applied to the dataset to reduce the number of variables in the suitability model. The results of the principle components analysis revealed that the first four components explained 77% of the variation within the dataset of potential denitrification variables. As a result of the PCA analysis, the variables Soil Hydrologic Class, Soil Organic Carbon, Land Cover, Soil pH, SSURGO's Flood Frequency, and Flood Exceedance Probability were used to evaluate riverine wetland areas potential for denitrification under two hydrologic connection scenarios, a "with-levee" and a "no-levee" condition. For the with levee scenario, there were 66,146 ha of floodplain that attained a suitability rating of average potential, an additional 16,937 ha of floodplain attained high potential, and 706 ha of floodplain were rated as having very-high potential. The second scenario assumed removal of levees in the study area. In this scenario, there were 65,897 ha in the floodplain that attained a suitability rating of average potential. There were 34,457 ha in the study segment that attained a rating of high potential, whereas 510 ha attained a very-high potential on the suitability scale. These results were then analyzed by levee system, comparing economic and population data with the results of the suitability analysis. In particular, the amount of area within a levee system achieving a rating of high potential vs. the total property value within the levee system was compared to determine which systems would be best candidates for strategic reconnection. This analysis suggests that the Bois & Brule, the Big Five, and the Grand Tower / Degonia Levee systems are the most suitable systems for strategic reconnection efforts in the study area.

Book Reducing Nutrient Losses from Cropland in the Mississippi Atchafalaya River Basin

Download or read book Reducing Nutrient Losses from Cropland in the Mississippi Atchafalaya River Basin written by Elizabeth Marshall and published by . This book was released on 2018 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Improving Water Quality in the Mississippi River Basin and Northern Gulf of Mexico

Download or read book Improving Water Quality in the Mississippi River Basin and Northern Gulf of Mexico written by Committee on Clean Water Act Implementation Across the Mississippi River Basin and published by National Academies Press. This book was released on 2012-12-31 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt: Most water resources managers, scientists, and other experts would agree that nonpoint source pollution is a more pressing and challenging national water quality problem today than point source pollution. Nonpoint sources of pollutants include parking lots, farm fields, forests, or any source not from a discrete conveyance such as a pipe or canal. Of particular concern across the Mississippi River basin (MRB) are high levels of nutrient loadings--nitrogen and phosphorus--from both nonpoint and point sources that ultimately are discharged into the northern Gulf of Mexico (NGOM). Nutrients emanate from both point and nonpoint sources across the river basin, but the large majority of nutrient yields across the MRB are nonpoint in nature and are associated with agricultural activities, especially applications of nitrogen-based fertilizers and runoff from concentrated animal feeding operations. Improving Water Quality in the Mississippi River Basin and Northern Gulf of Mexico offers strategic advice and priorities for addressing MRB and NGOM water quality management and improvements. Although there is considerable uncertainty as to whether national water quality goals can be fully realized without some fundamental changes to the CWA, there is general agreement that significant progress can be made under existing statutory authority and budgetary processes. This book includes four sections identifying priority areas and offering recommendations to EPA and others regarding priority actions for Clean Water Act implementation across the Mississippi River basin. These sections are: USDA's Mississippi River Basin Healthy Watersheds Initiative; Numeric Water Quality Criteria for the northern Gulf of Mexico; A Basinwide Strategy for Nutrient Management and Water Quality; and, Stronger Leadership and Collaboration.

Book Effects of Reducing Nutrient Loads to Surface Waters Within the Mississippi River Basin and the Gulf of Mexico

Download or read book Effects of Reducing Nutrient Loads to Surface Waters Within the Mississippi River Basin and the Gulf of Mexico written by Patrick L. Brezonik and published by . This book was released on 1999 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Polluting the Mississippi River Basin s Small Streams and Wetlands

Download or read book Polluting the Mississippi River Basin s Small Streams and Wetlands written by Jon Devine and published by . This book was released on 2008 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt: This issue paper discusses the particular danger of this change in interpretation in relation to the problem of nutrient pollution in the Mississippi River Basin. Pollution from the Mississippi contributes to the annual formation of an enormous "dead zone" in the Gulf of Mexico, an area where the bottom layer of water is so oxygen-depleted that most sea life cannot survive within it. This paper provides recommendations for reaffirming long-standing protections for our nation's waterways, including the wetlands and streams that play an important role in filtering pollution in the Mississippi River Basin.