Download or read book Characterizing Spatial and Temporal Changes and Driving Factors of Groundwater and Surface water Interactions Within the Mississippi Portion of the Mississippi Alluvial Plain written by and published by . This book was released on 2018 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The Mississippi Alluvial Plain, a robust agricultural region in the South-Central United States, provides commodities across the United States and around the world. Water for irrigation, which is necessary due to irregular rainfall patterns during the growing season, is withdrawn largely from the Mississippi River Valley Alluvial aquifer, one of the most intensely used aquifers in the United States. The groundwater-dependent region has observed recent declines in groundwater and streamflow levels, raising concerns about the availability and use of fresh-water resources. Declining water levels have prompted investigation into the current understanding of groundwater and surface-water interaction. Previous research does not adequately quantify the unobservable exchange of water between surface-water bodies and the underlying aquifer. This research was designed to advance the current understanding of the interaction between groundwater and surface water through the quantification of spatial and temporal trends in streamflow and groundwater level changes and the use of high-resolution spatial estimates of streambed hydraulic conductivity. Changes in streamflow and groundwater levels were quantified with the use of hydrograph-separation techniques and trend analyses. High-resolution estimates of streambed hydraulic conductivity were found through the correlation of waterborne continuous resistivity profiling data to hydraulic conductivity and streambed hydraulic conductivity estimates were incorporated into the existing Mississippi Embayment Regional Aquifer Study (MERAS) groundwater-flow model. Site-specific empirical relationships between resistivity and hydraulic conductivity were developed with near-stream borehole geophysical logs to improve model estimates of streambed hydraulic conductivity. Results of the quantification of changes in streamflow and groundwater levels suggested agricultural groundwater withdrawals for irrigation to be the primary source of grou
Download or read book Characterizing Spatial and Temporal Changes and Driving Factors of Groundwater and Surface water Interactions Within the Mississippi Portion of the Mississippi Alluvial Plain written by Courtney Killian and published by . This book was released on 2018 with total page 89 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Mississippi Alluvial Plain, a robust agricultural region in the South-Central United States, provides commodities across the United States and around the world. Water for irrigation, which is necessary due to irregular rainfall patterns during the growing season, is withdrawn largely from the Mississippi River Valley Alluvial aquifer, one of the most intensely used aquifers in the United States. The groundwater-dependent region has observed recent declines in groundwater and streamflow levels, raising concerns about the availability and use of fresh-water resources. Declining water levels have prompted investigation into the current understanding of groundwater and surface water interaction. Previous research does not adequately quantify the unobservable exchange of water between surface-water bodies and the underlying aquifer. This research was designed to advance the current understanding of the interaction between groundwater and surface water through the quantification of spatial and temporal trends in streamflow and groundwater level changes and the use of high-resolution spatial estimates of streambed hydraulic conductivity. Changes in streamflow and groundwater levels were quantified with the use of hydrograph-separation techniques and trend analyses. High-resolution estimates of streambed hydraulic conductivity were found through the correlation of waterborne continuous resistivity profiling data to hydraulic conductivity and streambed hydraulic conductivity estimates were incorporated into the existing Mississippi Embayment Regional Aquifer Study (MERAS) groundwater-flow model. Site-specific empirical relationships between resistivity and hydraulic conductivity were developed with near-stream borehole geophysical logs to improve model estimates of streambed hydraulic conductivity. Results of the quantification of changes in streamflow and groundwater levels suggested agricultural groundwater withdrawals for irrigation to be the primary source of groundwater-level declines. Results from the incorporation of high-resolution estimates of streambed hydraulic conductivity showed that the existing groundwater-flow model is sensitive to changes in streambed hydraulic conductivity, which may impact model accuracy. The incorporation of streambed hydraulic conductivity estimates derived from site-specific empirical relationships impacted MERAS model water-budget estimates. Information gained from this research will be used to improve the existing groundwater-flow model, which acts as a decision-support tool for water-resource managers at state and local levels to make informed water-use decisions for the conservation of fresh-water resources for sustainable agricultural irrigation practices.
Download or read book Hydrology of the Mississippi River Valley Alluvial Aquifer South central United States written by D. J. Ackerman and published by . This book was released on 1989 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Changes in the Volume of Water in the Mississippi River Alluvial Aquifer in the Delta Northwestern Mississippi 1980 94 written by J. Kerry Arthur and published by . This book was released on 1995 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Evaluation of Water quality and Habitat Assessment Data to Determine Ranges in Stream Conditions in the Mississippi River Alluvial Plain of Northwestern Mississippi and Eastern Arkansas written by Richard A. Rebich and published by . This book was released on 2004 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Summary of Results of an Investigation to Define the Geohydrology and Simulate the Effects of Large Ground water Withdrawals on the Mississippi River Alluvial Aquifer in Northwestern Mississippi written by D. M. Sumner and published by . This book was released on 1984 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Report Upon the Physics and Hydraulics of the Mississippi River Upon the Protection of the Alluvial Region Against Overflow written by Andrew Atkinson Humphreys and published by University of Michigan Library. This book was released on 2001 with total page 624 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Report Upon the Physics and Hydraulics of the Mississippi River written by Andrew Atkinson Humphreys and published by . This book was released on 1867 with total page 242 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Changes in the Volume of Water in the Mississippi River written by J. Kerry Arthur and published by . This book was released on 1995 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Hydrogeology and Water Quality of the Mississippi River Alluvium Near Muscatine Iowa June 1992 Through June 1994 written by Keith J. Lucey and published by . This book was released on 1995 with total page 90 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Report Upon the Physics and Hydraulics of the Mississippi River written by Andrew Atkinson Humphreys and published by . This book was released on 1878 with total page 790 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Review of the Report Upon the Physics and Hydraulics of the Mississippi River written by Edwin Hale Abbot and published by . This book was released on 1862 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Evaluation of Drawdown and Sources of Water in the Mississippi River Alluvium Caused by Hypothetical Pumping Muscatine Iowa written by Keith J. Lucey and published by . This book was released on 1997 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Ground Water Problems in Mississippi a Preliminary Report on the Ground Water Problems of the State to the Governor and the Legislature and the People of Mississippi written by Mississippi Inter-Organizational Committee on Ground Water and published by . This book was released on 1961 with total page 42 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Effect of Groundwater Withdrawals from the Mississippi River Valley Alluvial Aquifer on Water Quantity and Quality in the Mississippi Delta written by Jeannie R. B. Barlow and published by . This book was released on 2013 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt: Watersheds within northwestern Mississippi, a productive agricultural region referred to as the Delta, were recently identified as contributors of total nitrogen and phosphorus fluxes to the Gulf of Mexico. Water withdrawals for irrigation in the Delta have altered flow paths between surface-water and groundwater systems, allowing for more surface-water losses to the underlying alluvial aquifer. In order to understand how to manage nitrogen in a watershed, it is necessary to identify and quantify hydrologic flow paths and biogeochemical conditions along these flow paths, which ultimately combine to determine transport and fate. In order to evaluate the extent and role of surface-water losses to the alluvial aquifer on the transport of nitrate, a two-dimensional groundwater/surface-water exchange model was developed for a site within the Delta. Results from this model determined that groundwater/surface-water exchange at the site occurred regularly and recharge was laterally extensive into the alluvial aquifer. Nitrate was consistently reported in surface-water samples (n= 52, median concentration = 39.8 micromole/L), although never detected in samples collected from instream or near stream piezometers )n=46). Coupled model and water-quality results support the case for denitrification/ nitrate loss from surface water moving through an anoxic streambed. At larger scale, recent results from two Spatially Referenced Regressions on Watershed attributes (SPARROW) models imply that nitrogen is transported relatively conservatively once it enters the main channel of the Big Sunflower River Basin, which contributes much of the water discharging from the Yazoo River Basin to the Mississippi River. Net loss of nitrogen was assessed by comparing total nitrogen data from Lagrangian sampling events to chloride, drainage area, and predicted total nitrogen flux results from the SPARROW models. Results indicated relatively conservative instream transport of nitrogen at the scale of the Big Sunflower River Basin; however, two potential nitrogen loss mechanisms were identified: (1) transport and transformation of nitrogen through the streambed, and (2) sequestration and transformation of nitrogen above the drainage control structures downstream of Anguilla.
Download or read book Potential Ground water Level Changes in the Mississippi River Alluvial Aquifer in Response to Proposed Navigation Improvements on the Yazoo River in Mississippi written by A. G. Lamonds and published by . This book was released on 1984 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Simulated Ground water Flow and Water Quality of the Mississippi River Alluvium Near Burlington Iowa 1999 written by Robert A. Boyd and published by . This book was released on 2001 with total page 54 pages. Available in PDF, EPUB and Kindle. Book excerpt:
