John Izbicki
John Izbicki - California Water Science Center
Science and Products
Filter Total Items: 102
Water-quality trends in the Santa Ana River at MWD Crossing and below Prado Dam, Riverside County, California
The Santa Ana River, located in an extensively urbanized basin, drains about 2,670 square miles near Los Angeles, California. Almost all flow in the river, about 200,000 acre-feet annually, is diverted to ponds where it infiltrates and recharges underlying aquifers. About 2 million people are dependent on these aquifers for water supply. In recent years, base flow in the river has increased as a r
Authors
Carmen A. Burton, John A. Izbicki, Katherine S. Paybins
Chloride and tritium concentrations in a thick unsaturated zone underlying an intermittent stream in the Mojave Desert, Southern California, USA
No abstract available.
Authors
John A. Izbicki, Robert L. Michel, P. Martin
Seawater intrusion in aquifers underlying the oxnard plain, Ventura County, California
[No abstract available]
Authors
John A. Izbicki, Eric G. Reichard, Tracy Nishikawa, Peter Martin
Use of isotopic data to evaluate recharge and geologic controls on the movement of ground water in Las Posas Valley, Ventura County, California
Injection, storage, and recovery of imported water is planned for aquifers underlying Las Posas Valley. To evaluate sources of ground-water recharge and the age of the water (time since recharge), and to identify barriers to ground-water flow prior to the injection of imported water, samples from wells and surface sources were collected and analyzed for chemical and isotopic composition. The delta
Authors
John A. Izbicki, Peter Martin
Source, Movement, and Age of Ground Water in a Coastal California Aquifer
No abstract available.
Authors
John A. Izbicki
Source, movement and age of groundwater in the upper part of the Mojave River Basin, California, USA
Water samples from wells were collected and analysed for oxygen-18, deuterium, tritium, carbon-14, and carbon-13 to determine the source, movement and age of groundwater in the upper part of the Mojave River basin. Water in the alluvial aquifer has a median deuterium composition of -66??? and contains tritium, and was recently recharged by water from the Mojave River. Water in the regional aquifer
Authors
J. A. Izbicki, P. Martin, R. L. Michel
Water-quality data for the Santa Clara-Calleguas hydrologic unit, Ventura County, California, October 1989 through December 1993
More than 700 water samples were collected from 232 wells and 34 surface-water sites in the Santa Clara-Calleguas Hydrologic Unit, Ventura County, California, from October 1989 through December 1993 as part of the U.S. Geological Survey's Southern California Regional Aquifer-System Analysis study. Most samples were analyzed for major ions, nutrients, selected trace elements, oxygen-18, and deuteri
Authors
J. A. Izbicki, P. M. Martin, J.N. Densmore, D. A. Clark
Implications of uncertainty in exposure assessment for groundwater contamination
Decision-making on regulation, mitigation, and treatment of drinking water contamination depends, in part, on estimates of human exposure. Assessment of past, present and potential future exposure levels requires quantitative characterization of the contaminant sources, the transport of contaminants and the level of actual human exposure to the contaminated water. Failure to consider the uncertain
Authors
Eric G. Reichard, John A. Izbicki, Peter Martin
3H and 14C as tracers of ground-water recharge
Surface spreading of water from the Santa Clara River is used to recharge aquifers underlying the Oxnard Plain. These aquifers are divided into an upper system about 400 feet thick, and a lower system more than 1,000 feet thick. In previous studies, it has been reported that surface spreading recharged aquifers in both the upper and lower systems. Water from most wells perforated in the upper syst
Authors
John A. Izbicki, Robert L. Michel, Peter Martin
Water depth and thickness of sediment in Reservoirs 1 and 2, Framingham and Ashland, Massachusetts
No abstract available.
Authors
John A. Izbicki, Gene W. Parker
Chemical quality of agricultural drainage water tributary to Kesterson Reservoir, Fresno and Merced counties, California, January and August 1984
No abstract available.
Authors
John A. Izbicki
Science and Products
Filter Total Items: 102
Water-quality trends in the Santa Ana River at MWD Crossing and below Prado Dam, Riverside County, California
The Santa Ana River, located in an extensively urbanized basin, drains about 2,670 square miles near Los Angeles, California. Almost all flow in the river, about 200,000 acre-feet annually, is diverted to ponds where it infiltrates and recharges underlying aquifers. About 2 million people are dependent on these aquifers for water supply. In recent years, base flow in the river has increased as a r
Authors
Carmen A. Burton, John A. Izbicki, Katherine S. Paybins
Chloride and tritium concentrations in a thick unsaturated zone underlying an intermittent stream in the Mojave Desert, Southern California, USA
No abstract available.
Authors
John A. Izbicki, Robert L. Michel, P. Martin
Seawater intrusion in aquifers underlying the oxnard plain, Ventura County, California
[No abstract available]
Authors
John A. Izbicki, Eric G. Reichard, Tracy Nishikawa, Peter Martin
Use of isotopic data to evaluate recharge and geologic controls on the movement of ground water in Las Posas Valley, Ventura County, California
Injection, storage, and recovery of imported water is planned for aquifers underlying Las Posas Valley. To evaluate sources of ground-water recharge and the age of the water (time since recharge), and to identify barriers to ground-water flow prior to the injection of imported water, samples from wells and surface sources were collected and analyzed for chemical and isotopic composition. The delta
Authors
John A. Izbicki, Peter Martin
Source, Movement, and Age of Ground Water in a Coastal California Aquifer
No abstract available.
Authors
John A. Izbicki
Source, movement and age of groundwater in the upper part of the Mojave River Basin, California, USA
Water samples from wells were collected and analysed for oxygen-18, deuterium, tritium, carbon-14, and carbon-13 to determine the source, movement and age of groundwater in the upper part of the Mojave River basin. Water in the alluvial aquifer has a median deuterium composition of -66??? and contains tritium, and was recently recharged by water from the Mojave River. Water in the regional aquifer
Authors
J. A. Izbicki, P. Martin, R. L. Michel
Water-quality data for the Santa Clara-Calleguas hydrologic unit, Ventura County, California, October 1989 through December 1993
More than 700 water samples were collected from 232 wells and 34 surface-water sites in the Santa Clara-Calleguas Hydrologic Unit, Ventura County, California, from October 1989 through December 1993 as part of the U.S. Geological Survey's Southern California Regional Aquifer-System Analysis study. Most samples were analyzed for major ions, nutrients, selected trace elements, oxygen-18, and deuteri
Authors
J. A. Izbicki, P. M. Martin, J.N. Densmore, D. A. Clark
Implications of uncertainty in exposure assessment for groundwater contamination
Decision-making on regulation, mitigation, and treatment of drinking water contamination depends, in part, on estimates of human exposure. Assessment of past, present and potential future exposure levels requires quantitative characterization of the contaminant sources, the transport of contaminants and the level of actual human exposure to the contaminated water. Failure to consider the uncertain
Authors
Eric G. Reichard, John A. Izbicki, Peter Martin
3H and 14C as tracers of ground-water recharge
Surface spreading of water from the Santa Clara River is used to recharge aquifers underlying the Oxnard Plain. These aquifers are divided into an upper system about 400 feet thick, and a lower system more than 1,000 feet thick. In previous studies, it has been reported that surface spreading recharged aquifers in both the upper and lower systems. Water from most wells perforated in the upper syst
Authors
John A. Izbicki, Robert L. Michel, Peter Martin
Water depth and thickness of sediment in Reservoirs 1 and 2, Framingham and Ashland, Massachusetts
No abstract available.
Authors
John A. Izbicki, Gene W. Parker
Chemical quality of agricultural drainage water tributary to Kesterson Reservoir, Fresno and Merced counties, California, January and August 1984
No abstract available.
Authors
John A. Izbicki