Using chemical, hydrologic, and age dating analysis to delineate redox processes and flow paths in the riparian zone of a glacial outwash aquifer‐stream system

Puckett, Larry J.; Cowdery, Timothy K.; McMahon, Peter B.; Tornes, L.H.; Stoner, Jeffrey D.

doi:10.1029/2001wr000396

Cited by 94 publications

(96 citation statements)

References 61 publications

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“…4 -2). (10) However, constituents such as arsenic, where anoxia is partly due to the composition of the aquifer sediments, present on iron oxide coatings on glacial sediments, can which have high clay content (which can impede groundwater readily dissolve into groundwater under anoxic conditions. flow) and contain abundant organic matter that microorganisms use to facilitate energy-producing redox reactions.…”

Section: O N Ta Ri O Lake Mic Hi Ga N L Ak E Superio R L a K E H U mentioning

confidence: 99%

The quality of our Nation's waters: water quality in the glacial aquifer system, northern United States, 1993-2009

Warner¹,

Ayotte²

2015

Circular

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For more information on the USGS-the Federal source for science about the Earth, its natural and living resources, natural hazards, and the environment-visit http://www.usgs.gov or call 1-888-ASK-USGS.For an overview of USGS information products, including maps, imagery, and publications, visit http: //www.usgs.gov/pubprod To order this and other USGS information products, visit http://store.usgs.gov Any use of trade, firm, or product names is for descriptive purposes only and does not imply endorsement by the U.S. Government.Although this information product, for the most part, is in the public domain, it also may contain copyrighted materials as noted in the text. Permission to reproduce copyrighted items must be secured from the copyright owner.Suggested citation: Warner, K.L., and Ayotte, J.D., 2014, The quality of our Nation's waters -Water quality in the glacial aquifer system, northern United States, 1993-2009: U.S. Geological Survey Circular 1352. Library of Congress Cataloging-in-Publication DataWarner, Kelly L. The quality of our nation's waters---water quality in the glacial aquifer system, northern United States, 1993States, -2009 ForewordThe United States has made major investments in assessing, managing, regulating, and conserving natural resources, such as water and a variety of ecosystems. Sustaining the quality of the Nation's water resources and the health of our diverse ecosystems depends on the availability of sound water-resources data and information to develop effective, science-based policies. Effective management of water resources also brings more certainty and efficiency to important economic sectors. Taken together, these actions lead to immediate and long-term economic, social, and environmental benefits that make a difference to the lives of millions of people ( http://water.usgs.gov/nawqa/applications/ ).Two decades ago, Congress established the U.S. Geological Survey's National Water-Quality Assessment (NAWQA) Program to meet this need. Since then NAWQA has served as a primary source of nationally consistent information on the quality of the Nation's streams and groundwater, on ways in which water quality changes over time, and on the natural features and human activities affecting the quality of streams and groundwater. Objective and reliable data, systematic scientific studies, and models are used to characterize where, when, and why the Nation's water quality is degradedand what can be done to improve and protect the water for human and ecosystem needs. This information is critical to our future because the Nation faces an increasingly complex and growing need for clean water to support people, economic growth, and healthy ecosystems. For example, NAWQA findings for public-supply wells, which provide water to about 105 million people, showed that 22 percent of source-water samples contained at least one contaminant at levels of potential health concern. Similarly, 23 percent of samples from domestic (or privately owned) wells, which supply untreated water to an additional...

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Section: O N Ta Ri O Lake Mic Hi Ga N L Ak E Superio R L a K E H U mentioning

confidence: 99%

The quality of our Nation's waters: water quality in the glacial aquifer system, northern United States, 1993-2009

Warner¹,

Ayotte²

2015

Circular

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“…For example, the history and fate of NO 3 contamination have been carefully evaluated in multidisciplinary local transect studies in areas with agricultural sources (e.g. Böhlke and Denver, 1995;Tesoriero et al, 2000;Böhlke et al, 2002;Puckett et al, 2002) and septic tank sources (e.g. Robertson and Cherry, 1992;Wilhelm et al, 1996;Aravena and Robertson, 1998).…”

Section: Introductionmentioning

confidence: 99%

Aquifer-scale controls on the distribution of nitrate and ammonium in ground water near La Pine, Oregon, USA

Hinkle

Böhlke

Duff

et al. 2007

Journal of Hydrology

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Summary Geochemical and isotopic tools were applied at aquifer, transect, and subtransect scales to provide a framework for understanding sources, transport, and fate of dissolved inorganic N in a sandy aquifer near La Pine, Oregon. NO 3 is a common contaminant in shallow ground water in this area, whereas high concentrations of NH 4 -N (up to 39 mg/L) are present in deep ground water. N concentrations, N/Cl ratios, tracer-based apparent ground-water ages, N isotope data, and hydraulic gradients indicate that septic tank effluent is the primary source of NO 3 . N isotope data, N/Cl and N/C relations, 3H data, and hydraulic considerations point to a natural, sedimentary organic matter source for the high concentrations of NH 4 , and are inconsistent with an origin as septic tank N. Low recharge rates and flow velocities have largely restricted anthropogenic NO 3 to isolated plumes within several meters of the water table. A variety of geochemical and isotopic data indicate that denitrification also affects NO 3 gradients in the aquifer. Ground water in the La Pine aquifer evolves from oxic to increasingly reduced conditions. Suboxic conditions are achieved after about 15-30 y of transport below the water table. This article is a U.S. government work, and is not subject to copyright in the United States.denitrified near the oxic/suboxic boundary. Denitrification in the La Pine aquifer is characterized well at the aquifer scale with a redox boundary approach that inherently captures spatial variability in the distribution of electron donors. ª

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“…Poole and Berman (2001) and Jackson et al (2001) studied the temperature adjustment function of riparian buffers. Puckett et al (2002) and Vidon and Hill (2004) analyzed the run-off from melting glaciers and its impacts on the environment. Wilzbach et al (2005) studied the interwoven relationship between salmon and the forest, based upon the nitrogen nutrient left behind by the fish.…”

Section: Buffer Function Studies In the 2000'smentioning

confidence: 99%

The Characteristics of Riparian Buffer Studies

Shearer¹

2007

J ENV INFORM

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ABSTRACT. Riparian buffers are vegetated areas along water bodies that serve an array of functions, ranging from water quality protection, soil erosion control, to species preservation. The establishment and maintenance of riparian buffers have been an important environmental management practice in the United States since the 1970's. Emerging along with this practice is a body of knowledge about riparian buffers. In this article, over 500 articles published in the past three decades are reviewed, substantiating this still evolving field of inquiry, which we shall designate as riparian buffer studies. Among the major findings of the literature review are (1) the literature starts to emerge with greater frequency in the 1980's, grows in depth and scope throughout the 1990's, and continues to the present date; (2) publications surveyed fall into three broad thematic categories that relate to the functions, performance, and policies of riparian buffers, respectively; (3) a large percentage of the publications (over 80%) address issues across thematic categories; (4) this convergence of thematic categories may suggest not only the interwoven nature of the various aspects of riparian buffers, but also the need for a holistic approach to riparian buffer studies; (5) geospatial information technology plays an integral role in the evolution of riparian buffer studies; (6) emerging themes for riparian buffer studies include optimization of benefits, wildlife research, ecosystem restoration, headwater stream functions, economics, restoration, performance, policy, active management, and disturbance ecology, just to name a few.

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Using chemical, hydrologic, and age dating analysis to delineate redox processes and flow paths in the riparian zone of a glacial outwash aquifer‐stream system

Cited by 94 publications

References 61 publications

The quality of our Nation's waters: water quality in the glacial aquifer system, northern United States, 1993-2009

The quality of our Nation's waters: water quality in the glacial aquifer system, northern United States, 1993-2009

Aquifer-scale controls on the distribution of nitrate and ammonium in ground water near La Pine, Oregon, USA

The Characteristics of Riparian Buffer Studies

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