Digital data sets that describe aquifer characteristics of the Enid isolated terrace aquifer in northwestern Oklahoma

Becker, Carol J.; Runkle, D.L.; Rea, Alan

doi:10.3133/ofr96450

Cited by 3 publications

(2 citation statements)

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“…Hydraulic conductivity is 28.5 m/day over most of the EITA, except in the northwestern portion where it peaks at 40.84 m/d (Becker et al, 1997). Depth to the water table varies throughout the EITA from 0-17 meters.…”

Section: 22: Geologymentioning

confidence: 97%

Simulating the hydrologic response of a semiarid watershed to switchgrass cultivation

2013

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The conversion of land from existing uses to biofuel cultivation is expected to increase given concerns about the sustainability of fossil fuel supplies. Nonetheless, research into the environmental impacts of biofuel crops, primarily the hydrological impacts of their cultivation, is in its infancy. To investigate such issues, the response of a 1,649 km2 semiarid basin to the incremental substitution of the widely discussed biofuel candidate switchgrass (Panicum virgatum L.) for native land uses was modeled using the Soil and Water Assessment Tool (SWAT). Median discharges decreased by 5.6–20.6% during the spring and by 6.4–31.2% during the summer, depending on the quantity of acreage converted. These were driven by an increased spring and summer evapotranspiration of 3.4–32.0% and 1.5–18.9%, respectively, depending on the quantity of switchgrass biomass produced. The substitution of switchgrass also resulted in larger quantities of water stress days than in baseline scenarios. The authors encourage the exploration of alternative biofuel crops in semiarid areas to mitigate such negative impacts.

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Section: 22: Geologymentioning

confidence: 97%

Simulating the hydrologic response of a semiarid watershed to switchgrass cultivation

2013

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“…The transmissivity of the EITA is 117 m 2 /d, and the average specific yield is 0.30. Hydraulic conductivity is 28.5 m/day over most of the EITA, except in the north‐western portion where it peaks at 40.84 m/d (Becker et al ., ). Depth to the water table varies throughout the EITA from 0 to 17 m. Recharge over the aquifer is 58 mm/yr or ~7% of the mean annual precipitation (Kent et al ., ).…”

Section: Study Areamentioning

confidence: 99%

Evaluating the impacts of climate change and switchgrass production on a semiarid basin

Goldstein

Tarhule

2014

Hydrological Processes

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Climate and land use changes greatly modify hydrologic regimes. In this paper, we modelled the impacts of biofuel cultivation in the US Great Plains on a 1061‐km2 watershed using the Soil and Water Assessment Tool (SWAT) hydrologic model. The model was calibrated to monthly discharges spanning 2002–2010 and for the winter, spring, and summer seasons. SWAT was then run for a climate‐change‐only scenario using downscaled precipitation and a projected temperature for 16 general circulation model (GCM) runs associated with the Intergovernmental Panel on Climate Change Special Report on Emission Scenarios A2 scenario spanning 2040–2050. SWAT was also run on a climate change plus land use change scenario in which Alamo switchgrass (Panicum virgatum L.) replaced native range grasses, winter wheat, and rye (89% of the basin). For the climate‐change‐only scenario, the GCMs agreed on a monthly temperature increase of 1–2 °C by the 2042–2050 period, but they disagreed on the direction of change in precipitation. For this scenario, decreases in surface runoff during all three seasons and increases in spring and summer evapotranspiration (eT) were driven predominantly by precipitation. Increased summer temperatures also significantly contributed to changes in eT. With the addition of switchgrass, changes in surface runoff are amplified during the winter and summer, and changes in eT are amplified during all three seasons. Depending on the GCM utilized, either climate change or land use change (switchgrass cultivation) was the dominant driver of change in surface runoff while switchgrass cultivation was the major driver of changes in eT. Copyright © 2014 John Wiley & Sons, Ltd.

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Rapid groundwater decline and some cases of recovery in aquifers globally

Jasechko,

Seybold,

Perrone

et al. 2024

Nature

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Groundwater resources are vital to ecosystems and livelihoods. Excessive groundwater withdrawals can cause groundwater levels to decline1–10, resulting in seawater intrusion11, land subsidence12,13, streamflow depletion14–16 and wells running dry17. However, the global pace and prevalence of local groundwater declines are poorly constrained, because in situ groundwater levels have not been synthesized at the global scale. Here we analyse in situ groundwater-level trends for 170,000 monitoring wells and 1,693 aquifer systems in countries that encompass approximately 75% of global groundwater withdrawals18. We show that rapid groundwater-level declines (>0.5 m year−1) are widespread in the twenty-first century, especially in dry regions with extensive croplands. Critically, we also show that groundwater-level declines have accelerated over the past four decades in 30% of the world’s regional aquifers. This widespread acceleration in groundwater-level deepening highlights an urgent need for more effective measures to address groundwater depletion. Our analysis also reveals specific cases in which depletion trends have reversed following policy changes, managed aquifer recharge and surface-water diversions, demonstrating the potential for depleted aquifer systems to recover.

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Digital data sets that describe aquifer characteristics of the Enid isolated terrace aquifer in northwestern Oklahoma

Cited by 3 publications

References 0 publications

Simulating the hydrologic response of a semiarid watershed to switchgrass cultivation

Simulating the hydrologic response of a semiarid watershed to switchgrass cultivation

Evaluating the impacts of climate change and switchgrass production on a semiarid basin

Rapid groundwater decline and some cases of recovery in aquifers globally

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