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Filtering by: Subject Nitrates -- Environmental aspects -- Oregon -- Morrow County Remove constraint Subject: Nitrates -- Environmental aspects -- Oregon -- Morrow County Non-Academic Affiliation Oregon State University. Graduate School Remove constraint Non-Academic Affiliation: Oregon State University. Graduate School

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An evaluation of well-water nitrate exposure and related health risks in the Lower Umatilla Basin of Oregon

Creator:

Mitchell, Thomas J.

Abstract:

Excessive nitrates in drinking water pose a human health threat, especially to infants. Methemoglobinemia, or blue-baby syndrome, is a potentially fatal condition that inhibits the ability of red blood cells to bind and transport oxygen. Nitrates/nitrites have also been linked to such conditions as cancer, birth defects, and behavioral and...

Resource Type:

Masters Thesis

Full Text:

) in Morrow and Umatilla counties of Oregon represents an intensively farmed and irrigated area in
Nitrate leaching and model evaluation under winter cover crops

Creator:

Minshew, Hudson F.

Resource Type:

Masters Thesis

Full Text:

of Master of Science in Soil Science presented on November 11, 1998. Title: Nitrate Leaching and
An economic evaluation of on-farm strategies for reduction of nitrate groundwater pollution : the case of irrigated production in the Columbia basin

Creator:

Johnson, Scott Lee

Abstract:

Technological advances in agricultural production over the past 40 years have contributed to the high standard of living enjoyed by many in the United States. Extensive use of chemicals to enhance yield and improve crop quality has played a major role in creating this highly productive U.S. agricultural system. Increased...

Resource Type:

Dissertation

Full Text:

Soil Map for Morrow County, Oregon 91 3.3A Computerized Enterprise Budget for an Irrigated Eastern
Nitrate and water under terraced dryland wheat production in Oregon

Creator:

Strock, Jeffrey S.

Abstract:

Dry land agriculture using summer fallow is a common crop production practice in the Columbia Plateau region of eastern Oregon. Farmed-over level terraces are used to control surface water runoff and soil erosion. More than 70 percent of the average annual precipitation around Pendleton, Oregon (350 - 400 mm) falls...

Resource Type:

Masters Thesis

Full Text:

Nitrate and water under terraced dryland wheat production in
Quantification of the nitrate attenuation capacity of low-permeability Missoula Flood deposits in the Willamette Valley of Oregon

Creator:

Arighi, Louis M.

Abstract:

Low-permeability geologic units may offer significant chemical and hydraulic protection of adjacent aquifers, and are important for managing groundwater quality, especially in areas with significant non-point source contamination. Nitrate in the Willamette Valley is attenuated across the Willamette Silt, a semi-confining unit overlying a regionally important aquifer. To quantify the...

Resource Type:

Masters Thesis

Full Text:

Survey, the Oregon Department of Environmental Quality, and ChevronTexaco. TABLE OF CONTENTS
Temporal and spatial variability of groundwater nitrate in the southern Willamette Valley of Oregon

Creator:

Mutti, Jeffrey Glenn

Abstract:

Groundwater nitrate contamination is a well-documented issue in the Southern Willamette Valley (SWV) of Oregon, as a Groundwater Management Area (GWMA) has recently been declared. As a GWMA, groundwater nitrate monitoring must occur until regional concentrations are below 7 mg/L NO3-N. However, the presence of temporal variability can make it...

Resource Type:

Masters Thesis

Full Text:

Oregon Abstract approved: Roy D. Haggerty Groundwater nitrate contamination is a well
Deep soil nitrogen survey, Lower Umatilla Basin, Oregon

Creator:

del Nero, Zachary Augustus

Abstract:

Soils of 49 agricultural and 2 "native condition" sites in the Lower Umatilla Basin, Oregon were sampled for nitrate-nitrogen, ammonium-nitrogen, chloride, and pH beginning in Fall of 1992. Several sites were sampled in Spring and Fall 1993 in order to indicate movement or loss of residual soil nitrogen over time....

Resource Type:

Masters Thesis

Full Text:

Umatilla Basin, Oregon were sampled for nitrate-nitrogen, ammonium-nitrogen, chloride, and pH beginning
Linkages among land use, riparian zones, and uptake and transformation of nitrate in stream ecosystems

Creator:

Sobota, Daniel J.

Abstract:

Land use alters the physical and biological structure of stream ecosystems and potentially alters their capacity to process nitrogen (N), an essential nutrient that has nearly doubled in abundance on the biosphere during the past century from human activities. In this dissertation, I quantified uptake and transformation of nitrate (NO₃⁻)...

Resource Type:

Dissertation

Full Text:

. Title: Linkages among Land Use, Riparian Zones, and Uptake and Transformation of Nitrate in Stream
A statistical evaluation of the water quality impacts of Best Management Practices installed at Tillamook County dairies

Creator:

Dorsey-Kramer, Jadene

Abstract:

The overall goal of this study was to determine if the Tillamook Bay tributaries' water quality has improved as a result of the Best Management Practices (BMP) installed at Tillamook County Dairies. The Rural Clean Water Program (RCWP) was a 10 to 15 year experiment designed to control agricultural non-point...

Resource Type:

Masters Thesis

Full Text:

County, Oregon promoted the installation of manure management facilities and nutrient management
Monitoring potential groundwater contamination due to agricultural production in Lane County, Oregon

Creator:

Gatchell, Lance O.

Resource Type:

Masters Thesis

Full Text:

subsurface samplers. Soil cores were collected on five farms in Lane County, Oregon at 1 m depth and soil

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Academic Affiliation

Bioresource Engineering4
Crop and Soil Science3
College of Health and Human Performance2
Fisheries and Wildlife2
Geosciences2
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Advisor

Selker, John S.3
Haggerty, Roy D.2
Rossignol, Annette M.2
Warkentin, Benno P.2
Adams, Richard M.1
more Advisors »

Commencement Year

Commencement Year range begin – Commencement Year range end

Current results range from 1990 to 2017

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Committee Member

Wildenschild, Dorthe3
Bolte, John2
Dick, Richard2
Selker, John2
Ackerman, Callan1
more Committee Members »

Creator

Arighi, Louis M.1
Cahall, Rebecca E.1
del Nero, Zachary Augustus1
Dorsey Kramer, Jadene1
Edgar, Thom G.1
more Creators »

Date

Date range begin – Date range end

Current results range from 1989 to 2016

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Decade

2010-20198
2000-200910
1990-19999
1980-19891

Degree Field

Bioresource Engineering4
Environmental Health Management3
Water Resources Engineering3
Fisheries Science2
Geology2
more Degree Fields »

Degree Level

Master's24
Doctoral4

Degree Name

Master of Science (M.S.)23
Doctor of Philosophy (Ph.D.)4
Master of Arts (M.A.)1

File Format

application/pdf4

Language

English [eng]28

License

All rights reserved20

Non-Academic Affiliation

Oregon State University. Graduate School[remove]28

Peer Reviewed

No24

Resource Type

Masters Thesis24
Dissertation4

Rights Statement

In Copyright20
Copyright Not Evaluated8

Subject

Nitrates -- Environmental aspects -- Oregon -- Willamette River Valley5
Groundwater -- Pollution -- Oregon -- Willamette River Valley4
Agricultural pollution -- Oregon2
Agricultural chemicals -- Environmental aspects -- Oregon -- Lane County1
Agricultural pollution -- Oregon -- Willamette River Valley1
more Subjects »

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