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Showing 1 to 20 of 24 for “"Alluvial aquifer."”.
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Aquifer Framework Restoration (AFR) in an Alluvial Aquifer, Central Texas.
The Brazos River Alluvium aquifer (BRAA) near Waco, Texas is an aquifer whose framework has been physically impacted by sand and gravel mining. The most productive portions of the BRAA framework are being excavated and kept as pit lakes or filled with different material. GIS identification of mined …
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Hydrogeologic assessment of the Brazos River alluvial aquifer : Waco to Marlin, Texas.
The Brazos River alluvial aquifer is a shallow unconfined aquifer within the alluvial deposits along the Brazos River. The deposits include the floodplain and terrace material which are comprised of clay, silt, sand, and gravel. Thicknesses of the alluvial deposits range up to 80 feet. Groundwater …
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A GIS Approach to Modeling Groundwater Levels in the Mississippi River Valley Alluvial Aquifer
… Delta region. The Mississippi River Valley Alluvial Aquifer is the uppermost aquifer and features the largest groundwater capacity in the Mississippi Embayment Aquifer System. The Mississippi River Valley Alluvial Aquifer, commonly referred to as the “alluvial aquifer”, spans 53,000〖 km〗^2 …
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Chloramine and MIEX control of disinfection by-products formed from an alluvial aquifer water source
Disinfection has been applied for centuries for disinfection process. The formation of disinfection by-products (DBPs) caused by disinfection become a main safety issue for the public health. Trihalomethanes (THMs) and haloacetic acids (HAAs) are two of the major classes in DBPs. In response to …
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Distribution and Transport of Nitrate in an Unconfined Alluvial Aquifer, Carson Valley, Douglas County, Nevada, 2009.
… Nevada rely on groundwater from an unconfined alluvial aquifer for drinking water and agricultural irrigation (although the Carson River is also used for irrigation). Since the 1970's, there has been a rapid increase in population in several parts of the valley with little economic incentive …
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Identifying A Mechanism For An Infiltration Threshold From The Sunflower River, Ms To The Underlying Alluvial Aquifer
… for infiltration to the underlying alluvial aquifer. This site is located near the center of a large regional groundwater cone of depression in the Mississippi River Valley alluvial aquifer. The USGS well (termed well 3 in this study) was thought to be completed in the regional …
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Surface spills at unconventional oil and gas sites: a contaminant transport modeling study for the South Platte alluvial aquifer
… risks to groundwater quality in the South Platte aquifer system, (2) to identify the key hydrologic and transport factors that determine these risks, (3) to develop a screening level methodology that could be applied at other sites and for various pollutants, and (4) to demonstrate the potential …
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Impacts to Anadromous Fish through Groundwater Extraction
… conditions. Section two explores the Scott River aquifer in Northern California and impacts to coho salmon (Oncorhynchus kisutch) within a shallow, mostly unconfined alluvial aquifer. Section three studies the Cosumnes River aquifer in the Central Valley and impacts to fall-run Chinook salmon …
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The geohydrology of the Swartkops River Basin : Uitenhage Region, Eastern Cape
… as well as the characteristics of the various aquifers in the Basin. The extent of pollution of the groundwater reserves was noted. This specialist study was carried out to assist the Department of Water Affairs and Forestry in formulating a water quality management plan for the river basin, …
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Hydrogeologic assessment of three solid waste disposal sites in the Brazos River alluvial deposits.
The Brazos River alluvial aquifer, which is composed of floodplain and terrace deposits, is a major source of shallow groundwater for the Brazos valley in central and southeast Texas. The alluvial deposits range from 10 to 40 feet in thickness and are composed of clayey and silty sands and gravel. …
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The distribution of vertical groundwater flow in the saturated zone of the Yucca Mountain area: A cross-sectional finite element model
… includes an upper volcanic and lower carbonate aquifer separated by an aquitard with an alluvial aquifer down-gradient. Results indicate that some groundwater flows beneath the high-gradient (low conductivity) zone through the carbonate aquifer. The volcanic aquifer, south of the high gradient …
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Use of Chemical and Isotopic Signatures to Distinguish Between Uranium Mill-Related and Naturally Occurring Groundwater Constituents at the Bluewater Disposal Site
… interaction of groundwater movement among the alluvial aquifer and adjacent San Andres aquifer. Analysis of data suggest that groundwater from the two aquifers have similar water quality characteristics yet are distinctly unique and have similar background uranium concentrations of about 14 …
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Water conservation methods to conserve the High Plains aquifer and Arikaree River Basin: a case study on the Arikaree River
… is groundwater dependent on the High Plains aquifer (HPA). The river alluvium is habitat for threatened fish species such as the Hybognathus hankinsoni (Brassy Minnow) and habitat for many terrestrial invertebrates. In addition to the demands for maintenance of habitats, the surrounding …
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Characterizing Variable Flow Pathways And Geochemical History Of Seepage Under The Mississippi River Levee: 2011, 2015, And 2016 Floods
… same magnitude for shallow and deep zones of the aquifer. Oxygen and hydrogen isotopes suggest that river water experiences significant evaporation before recharging to the Mississippi River valley alluvial aquifer, likely due to temporary surface storage in wetlands between the river and levee …
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Lakes and Groundwater of the Rieti Basin, Central Italy: Hydrochemistry, Paleolimnology, and Seismologic Influences
… springs representing local and regional aquifers were sampled as a means of comparing and evaluating the chemical data from the lakes, including Vicenna Riara (VIC), an alluvial aquifer which has hydrochemistry similar to LUN, and Peschiera (PES), which flows from a major regional …
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Quantifying the contribution of bank storage due to an alteration in stream stage
… stage, flood duration, and variations to the alluvial architecture. Results show bank storage is dominated by horizontal flow through the alluvial aquifer and thus water movement is highly sensitive to floodplain stratigraphy. Also, the highly engineered river system of the middle Rio Grande …
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Examination of the impact of the natural environment on levee sustainability, An
… alignment, the hydrogeological nature of the alluvial aquifer beneath the levee, and soil physical properties. A binary logistic regression was then applied to the dataset to evaluate the correlation between these environmental factors and the development of levee distress features (seepage …
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The geochemistry of groundwater and sediments governing tungsten concentration in the basin-fill aquifers, Fallon, Nevada
… the geochemical cycle of W in the basin-fill aquifer. Tungsten in the groundwater became a potential health concern due to its observed concentrations in the human population of Fallon; the potential sources of W from nearby W ore deposits, mines, processing plants, and geothermal waters; and …
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Isotopic evidence for the cycling of nitrate and nitrous oxide in aquifers beneath an irrigated agricultural district using established and emerging measurement techniques
… the production and reduction of NO3- and N2O in aquifers beneath the Emerald Irrigation Area (EIA), Queensland, Australia. Isotopic evidence indicates that NO3- in EIA aquifers is derived from fertiliser N which is retained in the soil organic N pool prior to mineralisation, nitrification and …
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Field Investigation of Stream-Aquifer Interactions: A Case Study in Coastal California
… the dynamic interaction between a stream and an alluvial aquifer at Swanton Pacific Ranch in the Scotts Creek watershed in Santa Cruz County, California. The aquifer is an important source of groundwater for cropland irrigation and for aquatic ecosystem support. The potential for groundwater …
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