Characterizing Spatial And Temporal Changes And Driving Factors Of Groundwater And Surface Water Interactions Within The Mississippi Portion Of The Mississippi Alluvial Plain PDF Download
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Author | : |
Publisher | : |
Total Pages | : |
Release | : 2018 |
Genre | : |
ISBN | : |
Download Characterizing Spatial and Temporal Changes and Driving Factors of Groundwater and Surface-water Interactions Within the Mississippi Portion of the Mississippi Alluvial Plain Book in PDF, ePub and Kindle
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 Water for irrigation, which is necessary due to irregular rainfall patterns during the growing season, is withdrawn largely from the Mississippi River Valley Alluvial aquifer, one of the most intensely used aquifers in the United States.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
Author | : Courtney Killian |
Publisher | : |
Total Pages | : 89 |
Release | : 2018 |
Genre | : |
ISBN | : |
Download Characterizing Spatial and Temporal Changes and Driving Factors of Groundwater and Surface-water Interactions Within the Mississippi Portion of the Mississippi Alluvial Plain Book in PDF, ePub and Kindle
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.
Author | : D. J. Ackerman |
Publisher | : |
Total Pages | : 84 |
Release | : 1989 |
Genre | : Aquifers |
ISBN | : |
Download Hydrology of the Mississippi River Valley Alluvial Aquifer, South-central United States Book in PDF, ePub and Kindle
Author | : J. Kerry Arthur |
Publisher | : |
Total Pages | : 20 |
Release | : 1995 |
Genre | : Stream measurements |
ISBN | : |
Download Changes in the Volume of Water in the Mississippi River Alluvial Aquifer in the Delta, Northwestern Mississippi, 1980-94 Book in PDF, ePub and Kindle
Author | : Richard A. Rebich |
Publisher | : |
Total Pages | : 64 |
Release | : 2004 |
Genre | : Government publications |
ISBN | : |
Download 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 Book in PDF, ePub and Kindle
Author | : D. M. Sumner |
Publisher | : |
Total Pages | : 28 |
Release | : 1984 |
Genre | : Groundwater |
ISBN | : |
Download 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 Book in PDF, ePub and Kindle
Author | : Andrew Atkinson Humphreys |
Publisher | : |
Total Pages | : 624 |
Release | : 1861 |
Genre | : Mississippi River |
ISBN | : |
Download Report Upon the Physics and Hydraulics of the Mississippi River; Upon the Protection of the Alluvial Region Against Overflow; and Upon the Deepening of the Mouths Book in PDF, ePub and Kindle
Author | : Edwin Hale Abbot |
Publisher | : |
Total Pages | : 48 |
Release | : 1862 |
Genre | : Mississippi River |
ISBN | : |
Download A Review of the Report Upon the Physics and Hydraulics of the Mississippi River Book in PDF, ePub and Kindle
Author | : Andrew Atkinson Humphreys |
Publisher | : |
Total Pages | : 242 |
Release | : 1867 |
Genre | : Mississippi River |
ISBN | : |
Download Report Upon the Physics and Hydraulics of the Mississippi River Book in PDF, ePub and Kindle
Author | : Xichun Zhou |
Publisher | : |
Total Pages | : 0 |
Release | : 2021 |
Genre | : |
ISBN | : |
Download Characterizing Flooding Regimes in the Lower Mississippi Alluvial Valley Over Recent Two Decades Book in PDF, ePub and Kindle
The Lower Mississippi Alluvial Valley (LMAV) was once the largest floodplain in the United States. Flooding regimes in the LMAV have strong impacts on the soil biogeochemical processes, nutrient cycling, forest species distribution, agricultural production, and wildlife habitat. This study characterized the LMAV flooding regimes using the 8-day-composite Moderate Resolution Imaging Spectroradiometer (MODIS) surface reflectance product from 2001 - 2018. The results showed significant spatial variations in the annual flooding duration in the LMAV, and the flooding area showed remarkable seasonal variations in the northern and central LMAV with the peak flooding area in winter and early spring. Digital Elevation Model (DEM) and slope were identified as the two major factors in determining the spatial pattern of flooding regimes. The LMAV flooding regimes dataset provides a scientific basis for the governments to design forest, agriculture, and wildlife management policies to enhance ecosystem services. Landowners also can use this information to make decisions for cropland retirement and tree plantation.