John Izbicki
John Izbicki - California Water Science Center
Science and Products
Filter Total Items: 102
Source and movement of helium in the eastern Morongo groundwater Basin: The influence of regional tectonics on crustal and mantle helium fluxes
We assess the role of fracturing and seismicity on fluid-driven mass transport of helium using groundwaters from the eastern Morongo Basin (EMB), California, USA. The EMB, located ???200 km east of Los Angeles, lies within a tectonically active region known as the Eastern California Shear Zone that exhibits both strike-slip and extensional deformation. Helium concentrations from 27 groundwaters ra
Authors
J.T. Kulongoski, David R. Hilton, J. A. Izbicki
Comparison of velocity-log data collected using impeller and electromagnetic flowmeters
Previous studies have used flowmeters in environments that are within the expectations of their published ranges. Electromagnetic flowmeters have a published range from 0.1 to 79.0 m/min, and impeller flowmeters have a published range from 1.2 to 61.0 m/min. Velocity-log data collected in five long-screened production wells in the Pleasant Valley area of southern California showed that (1) electro
Authors
M.W. Newhouse, J. A. Izbicki, G.A. Smith
Inorganic, isotopic, and organic composition of high-chloride water from wells in a coastal southern California aquifer
Chloride concentrations were as high as 230 mg/L in water from the surface discharge of long-screened production wells in Pleasant Valley, Calif., about 100 km NW of Los Angeles. Wells with the higher Cl− concentrations were near faults that bound the valley. Depending on well construction, high-Cl−water from different sources may enter a well at different depths. For example, Cl− concentration in
Authors
John A. Izbicki, Allen H. Christensen, Mark W. Newhouse, George R. Aiken
Temporal changes in the vertical distribution of flow and chloride in deep wells
The combination of flowmeter and depth-dependent water-quality data was used to evaluate the quantity and source of high-chloride water yielded from different depths to eight production wells in the Pleasant Valley area of southern California. The wells were screened from 117 to 437 m below land surface, and in most cases, flow from the aquifer into the wells was not uniformly distributed througho
Authors
John A. Izbicki, Allen H. Christensen, Mark W. Newhouse, Gregory A. Smith, Randall T. Hanson
A small-diameter sample pump for collection of depth-dependent samples from production wells under pumping conditions
No abstract available.
Authors
John A. Izbicki
Microbial and Dissolved Organic Carbon Characterization of Stormflow in the Santa Ana River at Imperial Highway, Southern California, 1999-2002
The Santa Ana River drains about 2,670 square miles of densely populated coastal southern California, near Los Angeles. Almost all the flow in the river, more than 200,000 acre-feet annually, is diverted to ponds where it infiltrates and recharges underlying aquifers pumped to supply water for more than 2 million people. Base flow in the river is almost entirely treated municipal wastewater discha
Authors
John A. Izbicki, M. Isabel Pimentel, Menu Leddy, Brian A. Bergamaschi
Occurrence of hexavalent chromium in ground water in the western Mojave Desert, California
About 200 samples from selected public supply, domestic, and observation wells completed in alluvial aquifers underlying the western Mojave Desert were analyzed for total dissolved Cr and Cr(VI). Because Cr(VI) is difficult to preserve, samples were analyzed by 3 methods. Chromium(VI) was determined in the field using both a direct colorimetric method and EPA method 218.6, and samples were speciat
Authors
J. W. Ball, J. A. Izbicki
Source and Movement of Ground Water in the Western Part of the Mojave Desert, Southern California, USA
Delta oxygen-18 and delta deuterium composition of precipitation and water from wells in the Mojave River and the Morongo ground-water basins in the western part of the Mojave Desert show that ground-water recharge occurs primarily from winter precipitation near low-altitude passes in the San Bernardino and the San Gabriel Mountains?as opposed to runoff from higher altitudes in the mountains. The
Authors
John A. Izbicki
Movement and Age of Ground Water in the Western Part of the Mojave Desert, Southern California, USA
Tritium and carbon-14 data in water from wells in the Mojave River and the Morongo ground-water basins in the western part of the Mojave Desert show recent recharge focused in the floodplain aquifer along the Mojave River. Older ground water was present in parts of the regional aquifer that surround and underlie the floodplain aquifer. Movement of water between the floodplain and the regional aqui
Authors
John A. Izbicki, Robert L. Michel
Comparison of ground-water flow model particle-tracking results and isotopic data in the Mojave River ground-water basin, southern California, USA
Flow-path and time-of-travel results for the Mojave River ground-water basin, southern California, calculated using the ground-water flow model MODFLOW and particle-tracking model MODPATH were similar to flow path and time-of-travel interpretations derived from delta-deuterium and carbon-14 data. Model and isotopic data both show short flow paths and young ground-water ages throughout the floodpla
Authors
John A. Izbicki, Christina L. Stamos, Tracy Nishikawa, Peter Martin
Geologic Setting, Geohydrology, and Ground-Water Quality near the Helendale Fault in the Mojave River Basin, San Bernardino County, California
The proximity of the Mojave River ground-water basin to the highly urbanized Los Angeles region has resulted in rapid population growth and, consequently, an increase in the demand for water. The Mojave River, the primary source of surface water for the region, normally is dry--except for periods of flow after intense storms; therefore, the region relies almost entirely on ground water to meet its
Authors
Christina L. Stamos, Brett F. Cox, John A. Izbicki, Gregory O. Mendez
Hydrogeology and geochemistry of aquifers underlying the San Lorenzo and San Leandro areas of the East Bay Plain, Alameda County, California
The East Bay Plain, on the densely populated eastern shore of San Francisco Bay, contains an upper aquifer system to depths of 250 feet below land surface and an underlying lower aquifer system to depths of more than 650 feet. Injection and recovery of imported water has been proposed for deep aquifers at two sites within the lower aquifer system. Successful operation requires that the injected wa
Authors
John A. Izbicki, James W. Borchers, David A. Leighton, Justin T. Kulongoski, Latoya Fields, Devin L. Galloway, Robert L. Michel
Science and Products
Filter Total Items: 102
Source and movement of helium in the eastern Morongo groundwater Basin: The influence of regional tectonics on crustal and mantle helium fluxes
We assess the role of fracturing and seismicity on fluid-driven mass transport of helium using groundwaters from the eastern Morongo Basin (EMB), California, USA. The EMB, located ???200 km east of Los Angeles, lies within a tectonically active region known as the Eastern California Shear Zone that exhibits both strike-slip and extensional deformation. Helium concentrations from 27 groundwaters ra
Authors
J.T. Kulongoski, David R. Hilton, J. A. Izbicki
Comparison of velocity-log data collected using impeller and electromagnetic flowmeters
Previous studies have used flowmeters in environments that are within the expectations of their published ranges. Electromagnetic flowmeters have a published range from 0.1 to 79.0 m/min, and impeller flowmeters have a published range from 1.2 to 61.0 m/min. Velocity-log data collected in five long-screened production wells in the Pleasant Valley area of southern California showed that (1) electro
Authors
M.W. Newhouse, J. A. Izbicki, G.A. Smith
Inorganic, isotopic, and organic composition of high-chloride water from wells in a coastal southern California aquifer
Chloride concentrations were as high as 230 mg/L in water from the surface discharge of long-screened production wells in Pleasant Valley, Calif., about 100 km NW of Los Angeles. Wells with the higher Cl− concentrations were near faults that bound the valley. Depending on well construction, high-Cl−water from different sources may enter a well at different depths. For example, Cl− concentration in
Authors
John A. Izbicki, Allen H. Christensen, Mark W. Newhouse, George R. Aiken
Temporal changes in the vertical distribution of flow and chloride in deep wells
The combination of flowmeter and depth-dependent water-quality data was used to evaluate the quantity and source of high-chloride water yielded from different depths to eight production wells in the Pleasant Valley area of southern California. The wells were screened from 117 to 437 m below land surface, and in most cases, flow from the aquifer into the wells was not uniformly distributed througho
Authors
John A. Izbicki, Allen H. Christensen, Mark W. Newhouse, Gregory A. Smith, Randall T. Hanson
A small-diameter sample pump for collection of depth-dependent samples from production wells under pumping conditions
No abstract available.
Authors
John A. Izbicki
Microbial and Dissolved Organic Carbon Characterization of Stormflow in the Santa Ana River at Imperial Highway, Southern California, 1999-2002
The Santa Ana River drains about 2,670 square miles of densely populated coastal southern California, near Los Angeles. Almost all the flow in the river, more than 200,000 acre-feet annually, is diverted to ponds where it infiltrates and recharges underlying aquifers pumped to supply water for more than 2 million people. Base flow in the river is almost entirely treated municipal wastewater discha
Authors
John A. Izbicki, M. Isabel Pimentel, Menu Leddy, Brian A. Bergamaschi
Occurrence of hexavalent chromium in ground water in the western Mojave Desert, California
About 200 samples from selected public supply, domestic, and observation wells completed in alluvial aquifers underlying the western Mojave Desert were analyzed for total dissolved Cr and Cr(VI). Because Cr(VI) is difficult to preserve, samples were analyzed by 3 methods. Chromium(VI) was determined in the field using both a direct colorimetric method and EPA method 218.6, and samples were speciat
Authors
J. W. Ball, J. A. Izbicki
Source and Movement of Ground Water in the Western Part of the Mojave Desert, Southern California, USA
Delta oxygen-18 and delta deuterium composition of precipitation and water from wells in the Mojave River and the Morongo ground-water basins in the western part of the Mojave Desert show that ground-water recharge occurs primarily from winter precipitation near low-altitude passes in the San Bernardino and the San Gabriel Mountains?as opposed to runoff from higher altitudes in the mountains. The
Authors
John A. Izbicki
Movement and Age of Ground Water in the Western Part of the Mojave Desert, Southern California, USA
Tritium and carbon-14 data in water from wells in the Mojave River and the Morongo ground-water basins in the western part of the Mojave Desert show recent recharge focused in the floodplain aquifer along the Mojave River. Older ground water was present in parts of the regional aquifer that surround and underlie the floodplain aquifer. Movement of water between the floodplain and the regional aqui
Authors
John A. Izbicki, Robert L. Michel
Comparison of ground-water flow model particle-tracking results and isotopic data in the Mojave River ground-water basin, southern California, USA
Flow-path and time-of-travel results for the Mojave River ground-water basin, southern California, calculated using the ground-water flow model MODFLOW and particle-tracking model MODPATH were similar to flow path and time-of-travel interpretations derived from delta-deuterium and carbon-14 data. Model and isotopic data both show short flow paths and young ground-water ages throughout the floodpla
Authors
John A. Izbicki, Christina L. Stamos, Tracy Nishikawa, Peter Martin
Geologic Setting, Geohydrology, and Ground-Water Quality near the Helendale Fault in the Mojave River Basin, San Bernardino County, California
The proximity of the Mojave River ground-water basin to the highly urbanized Los Angeles region has resulted in rapid population growth and, consequently, an increase in the demand for water. The Mojave River, the primary source of surface water for the region, normally is dry--except for periods of flow after intense storms; therefore, the region relies almost entirely on ground water to meet its
Authors
Christina L. Stamos, Brett F. Cox, John A. Izbicki, Gregory O. Mendez
Hydrogeology and geochemistry of aquifers underlying the San Lorenzo and San Leandro areas of the East Bay Plain, Alameda County, California
The East Bay Plain, on the densely populated eastern shore of San Francisco Bay, contains an upper aquifer system to depths of 250 feet below land surface and an underlying lower aquifer system to depths of more than 650 feet. Injection and recovery of imported water has been proposed for deep aquifers at two sites within the lower aquifer system. Successful operation requires that the injected wa
Authors
John A. Izbicki, James W. Borchers, David A. Leighton, Justin T. Kulongoski, Latoya Fields, Devin L. Galloway, Robert L. Michel