Impacts of agricultural irrigation recharge on groundwater quality in a basalt aquifer system (Washington, USA): a multi-tracer approach

Brown, Kyle; McIntosh, Jennifer C.; Rademacher, Laura K.; Lohse, Kathleen A.

doi:10.1007/s10040-011-0736-z

Cited by 28 publications

(24 citation statements)

References 36 publications

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“…Calculations of modern groundwater represent one such way to partition the statistical age distribution of a groundwater sample. Quantifying the abundance and distribution of modern groundwater can help (i) quantify groundwater renewal (e.g., Azzaz et al, ; Dassi, ; Huang et al, ; Le Gal La Salle et al, ; Wang, Hu, et al, ), (ii) identify wells and depths most likely to contain contaminants derived from human activities at the land surface (e.g., nitrate; e.g., Böhlke & Denver, ; Burow et al, ; Zuber et al, ; Broers, ; Katz et al, ; Visser, Broers, Van der Grift, & Bierkens, ; Visser et al, ; Brown et al, ; Diédhiou et al, ; Al‐Charideh & Hasan, ; Alikhani et al, ; Opazo et al, ), and (iii) identify parts of aquifer systems flushed most rapidly that, therefore, have disproportionate impacts on stream solute concentrations.…”

Section: Modern Groundwatermentioning

confidence: 99%

Global Isotope Hydrogeology―Review

Jasechko

2019

Reviews of Geophysics

212

124

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Groundwater 18O/16O, 2H/1H, 13C/12C, 3H, and 14C data can help quantify molecular movements and chemical reactions governing groundwater recharge, quality, storage, flow, and discharge. Here, commonly applied approaches to isotopic data analysis are reviewed, involving groundwater recharge seasonality, recharge elevations, groundwater ages, paleoclimate conditions, and groundwater discharge. Reviewed works confirm and quantify long held tenets: (i) that recharge derives disproportionately from wet season and winter precipitation; (ii) that modern groundwaters comprise little global groundwater; (iii) that “fossil” (>12,000‐year‐old) groundwaters dominate global aquifer storage; (iv) that fossil groundwaters capture late‐Pleistocene climate conditions; (v) that surface‐borne contaminants are more common in younger groundwaters; and (vi) that groundwater discharges generate substantial streamflow. Groundwater isotope data are disproportionately common to midlatitudes and sedimentary basins equipped for irrigated agriculture, but less plentiful across high latitudes, hyperarid deserts, and equatorial rainforests. Some of these underexplored aquifer systems may be suitable targets for future field testing.

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Section: Modern Groundwatermentioning

confidence: 99%

Global Isotope Hydrogeology―Review

Jasechko

2019

Reviews of Geophysics

212

124

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“…The delta (δ) values for oxygen-eighteen and deuterium for groundwaters will be more negative than the corresponding values of modern meteoric waters because the fractionation of the isotopes occurred at a lower temperature, suggesting that the groundwater being withdrawn today began precipitating during a colder climate, likely more than 11.6 ka, prior to the start of the Holocene epoch (Larson, et al, 2000;Douglas et. al., 2009;Brown et al, 2011).…”

Section: Purpose and Scopementioning

confidence: 99%

An Investigation and Comparison of Stable Isotopes in Meteoric Waters and Groundwaters From Southern Washington

Smoot¹,

Provided²

2020

Geological Society of America Abstracts With Programs

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“…The question remains of whether a similar system is feasible for manure management of concentrated animal operations. Over-irrigation pushes nitrate through shallow root zones to groundwater, causing water quality problems in the aquifer (Brown et al, 2011). Manure related water quality problems are driving public opinion and litigation, as well as public policy.…”

Section: Organic Resource Recyclingmentioning

confidence: 99%

Integrating Historic Agronomic and Policy Lessons with New Technologies to Drive Farmer Decisions for Farm and Climate: The Case of Inland Pacific Northwestern U.S.

Pan

Schillinger

Young

et al. 2017

Front. Environ. Sci.

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Climate-friendly best management practices for mitigating and adapting to climate change (cfBMPs) include changes in crop rotation, soil management and resource use. Determined largely by precipitation gradients, specific agroecological systems in the inland Pacific Northwestern U.S. (iPNW) feature different practices across the region. Historically, these farming systems have been economically productive, but at the cost of high soil erosion rates and organic matter depletion, making them win-lose situations. Agronomic, sociological, political and economic drivers all influence cropping system innovations. Integrated, holistic conservation systems also need to be identified to address climate change by integrating cfBMPs that provide win-win benefits for farmer and environment. We conclude that systems featuring short-term improvements in farm economics, market diversification, resource efficiency and soil health will be most readily adopted by farmers, thereby simultaneously addressing longer term challenges including climate change. Specific "win-win scenarios" are designed for different iPNW production zones delineated by water availability. The cfBMPs include reduced tillage and residue management, organic carbon (C) recycling, precision nitrogen (N) management and crop rotation diversification and intensification. Current plant breeding technologies have provided new cultivars of canola and pea that can diversify system agronomics Pan et al.Win-Win Scenarios for Farm and Climate and markets. These agronomic improvements require associated shifts in prescriptive, precision N and weed management. The integrated cfBMP systems we describe have the potential for reducing system-wide greenhouse gas (GHG) emissions by increasing soil C storage, N use efficiency (NUE) and by production of biofuels. Novel systems, even if they are economically competitive, can come with increased financial risk to producers, necessitating government support (e.g., subsidized crop insurance) to promote adoption. Other conservation-and climate change-targeted farm policies can also improve adoption. Ultimately, farmers must meet their economic and legacy goals to assure longer-term adoption of mature cfBMP for iPNW production systems.

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Impacts of agricultural irrigation recharge on groundwater quality in a basalt aquifer system (Washington, USA): a multi-tracer approach

Cited by 28 publications

References 36 publications

Global Isotope Hydrogeology―Review

Global Isotope Hydrogeology―Review

An Investigation and Comparison of Stable Isotopes in Meteoric Waters and Groundwaters From Southern Washington

Integrating Historic Agronomic and Policy Lessons with New Technologies to Drive Farmer Decisions for Farm and Climate: The Case of Inland Pacific Northwestern U.S.

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