Data from a thick unsaturated zone underlying Oro Grande and Sheep Creek washes in the western part of the Mojave Desert, near Victorville, San Bernardino County, California

Izbicki, John A.; Clark, Dennis A.; Pimental, Maria I.; Land, Michael; Radyk, J. C.; Michel, Robert L.

doi:10.3133/ofr00262

Cited by 14 publications

(24 citation statements)

References 4 publications

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“…Cores and core liners extruded from the core barrel were capped with plastic caps and sealed with electrical tape, then wrapped in plastic and saved in a heat‐sealed aluminum pouch. Izbicki et al [2000a] give additional details of field sampling and site instrumentation.…”

Section: Methodsmentioning

confidence: 99%

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Evaluation of unsaturated zone water fluxes in heterogeneous alluvium at a Mojave Basin Site

Nimmo

Deason

Izbicki

et al. 2002

Water Resources Research

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[1] Vertical and horizontal water fluxes in the unsaturated zone near intermittent streams critically affect ecosystems, water supply, and contaminant transport in arid and semiarid regions. The subsurface near the Oro Grande Wash is typical in having great textural diversity, pronounced layer contrasts, and extremely low hydraulic conductivities associated with nearly dry media. These features prevent a straightforward application of the Darcian method for recharge estimation, which has provided high-quality flux estimates at simpler, wetter sites. We have augmented the basic Darcian method with theoretical developments such that a small number of core sample unsaturated hydraulic property measurements, combined with additional, easily obtained data (e.g., drillers' logs) can provide useful flux estimates and knowledge of two-dimensional water behavior beneath the wash.

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Section: Methodsmentioning

confidence: 99%

“…The study area, with upper, middle, and lower borehole sites marked along the Oro Grande Wash, and hydrogeologic features as described by Mendez and Christensen [1997] and Izbicki et al [2000a].…”

Section: Introductionmentioning

confidence: 99%

Evaluation of unsaturated zone water fluxes in heterogeneous alluvium at a Mojave Basin Site

Nimmo

Deason

Izbicki

et al. 2002

Water Resources Research

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“…A basal gravel unit was present at the base of the reworked alluvium. The Victorville Fan deposits consisted of silty sand, with smaller amounts of silt, clay and gravel interspersed throughout the deposits (Izbicki et al ., ) and contained abundant fragments of Pelona Schist eroded from the San Gabriel Mountains. A clay‐rich paleosol, more than 1 m thick, was present at the top of the Victorville Fan underlying the reworked alluvium at approximately 6 m below land surface.…”

Section: Model Comparison With Field Studiesmentioning

confidence: 99%

“…To test the use of the seepage equations outlined earlier, we simplified the subsurface logging information described earlier and developed by Izbicki et al . () below the 10‐m deep dense clay layer. They found gravelly sands to sandy gravels eventually fining to silty sands at depth that were modelled here as a single unit of simple fine sand with λ = 3 and S y ranging from 10% to 15%.…”

Section: Model Comparison With Field Studiesmentioning

confidence: 99%

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Estimating agricultural deep drainage lag times to groundwater: application to Antelope Valley, California, USA

Grismer

2012

Hydrological Processes

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Estimates of groundwater volumes available in semiarid regions that rely on water balance calculations require the determination of both surface to groundwater lag times and volumes from irrigation or rainfall initiated recharge. Subsurface geologic material hydraulic properties (e.g. hydraulic conductivities, water retention functions) necessary for unsaturated flow modelling are rarely available as are the instrumented field tests that might determine such lag times. Here we develop a simple two‐parameter (specific yield, Sy, and pore‐size distribution index, λ), one‐dimensional unsaturated flow model from simplifications of the Richards equation (using the Brooks‐Corey relationships) to determine lag times from agricultural deep drainage associated with the irrigation of alfalfa hay and various row crops in the Antelope Valley of California, USA. Model‐predicted lag times to depths of 85 m bgs (below ground surface) were similar to that measured in a 2‐year ponded recharge field trial, slightly overestimating that measured by approximately 15% (0.51 vs 0.44 years). Lag time estimates were most sensitive to estimated deep percolation rates and roughly equally sensitive to the model hydraulic parameters. Generally, as subsurface material textures coarsen towards larger Sy and λ values for all Sy >10%, lag times progressively increase; however, at Sy <10%, lag times decrease substantially suggesting that particular combinations of Sy and λ values that may be associated with similarly textured materials can result in the prediction of different lag times for Sy approximately 10%. Overall, lag times of 1–3 years to a depth of 69 m bgs were estimated from deep drainage of agricultural irrigation across a variety of irrigation schedules and subsurface materials. Copyright © 2012 John Wiley & Sons, Ltd.

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Chromium, chromium isotopes and selected trace elements, western Mojave Desert, USA

Izbicki

Ball

Bullen

et al. 2008

Applied Geochemistry

170

105

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Data from a thick unsaturated zone underlying Oro Grande and Sheep Creek washes in the western part of the Mojave Desert, near Victorville, San Bernardino County, California

Abstract: FIGURES Contents III Sea Level: In this report "sea level" refers to National Geodetic Vertical Datum of 1929 (NGVD of 1929) a geodetic datum derived from a general adjustment of the first-order level nets of both the United States and Canada, formerly called Sea Level Datum of 1929.

Cited by 14 publications

References 4 publications

Evaluation of unsaturated zone water fluxes in heterogeneous alluvium at a Mojave Basin Site

Evaluation of unsaturated zone water fluxes in heterogeneous alluvium at a Mojave Basin Site

Estimating agricultural deep drainage lag times to groundwater: application to Antelope Valley, California, USA

Chromium, chromium isotopes and selected trace elements, western Mojave Desert, USA

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