Jill N Densmore-Judy (Former Employee)
Science and Products
Filter Total Items: 30
Geohydrology, geochemistry, and numerical simulation of groundwater flow and land subsidence in the Bicycle Basin, Fort Irwin National Training Center, California Geohydrology, geochemistry, and numerical simulation of groundwater flow and land subsidence in the Bicycle Basin, Fort Irwin National Training Center, California
Groundwater pumping from Bicycle Groundwater Basin (referred to as Bicycle Basin) in the Fort Irwin National Training Center, California, began in 1967. From 1967 to December 2010, about 46,000 acre-feet of water had been pumped from the basin and transported to the Irwin Basin. During this time, not only did water levels in the basin decline by as much as 100 feet, the quality of the...
Authors
Jill N. Densmore, Linda R. Woolfenden, Diane L. Rewis, Peter M. Martin, Michelle Sneed, Kevin M. Ellett, Michael Solt, David M. Miller
Against the current— The Mojave River from sink to source: The 2018 Desert Symposium field trip road log Against the current— The Mojave River from sink to source: The 2018 Desert Symposium field trip road log
The Mojave River evolved over the past few million years by “fill and spill” from upper basins near its source in the Transverse Ranges to lower basins. Each newly “spilled into” basin in the series? sustained a long-lived lake but gradually filled with Mojave River sediment, leading to spill to a yet lower elevation? basin. The Mojave River currently terminates at Silver Lake, near...
Authors
David M. Miller, R.E. Reynolds, Krishangi D. Groover, David C. Buesch, H. J. Brown, Geoffrey Cromwell, Jill N. Densmore, A.L. Garcia, D. Hughson, J.R. Knott, Jeffrey E. Lovich
Evaluation of the Source and Transport of High Nitrate Concentrations in Ground Water, Warren Subbasin, California Evaluation of the Source and Transport of High Nitrate Concentrations in Ground Water, Warren Subbasin, California
Ground water historically has been the sole source of water supply for the Town of Yucca Valley in the Warren subbasin of the Morongo ground-water basin, California. An imbalance between ground-water recharge and pumpage caused ground-water levels in the subbasin to decline by as much as 300 feet from the late 1940s through 1994. In response, the local water district, Hi-Desert Water...
Authors
Tracy Nishikawa, Jill N. Densmore, Peter Martin, Jonathan C. Matti
Water-resources and land-surface deformation evaluation studies at Fort Irwin National Training Center, Mojave Desert, California Water-resources and land-surface deformation evaluation studies at Fort Irwin National Training Center, Mojave Desert, California
The U.S. Army Fort Irwin National Training Center (NTC), in the Mojave Desert, obtains all of its potable water supply from three groundwater basins (Irwin, Langford, and Bicycle) within the NTC boundaries (fig. 1; California Department of Water Resources, 2003). Because of increasing water demands at the NTC, the U.S. Geological Survey (USGS), in cooperation with the U.S. Army...
Authors
Jill N. Densmore, Justine E. Dishart, David M. Miller, David C. Buesch, Lyndsay B. Ball, Paul A. Bedrosian, Linda R. Woolfenden, Geoffrey Cromwell, Matthew K. Burgess, Joseph Nawikas, David O’Leary, Adam Kjos, Michelle Sneed, Justin T. Brandt
Initial characterization of the groundwater system near the Lower Colorado Water Supply Project, Imperial Valley, California Initial characterization of the groundwater system near the Lower Colorado Water Supply Project, Imperial Valley, California
In 2009, the U.S. Geological Survey, in cooperation with the city of Needles, began a study of the hydrogeology along the All-American Canal, which conveys water from the Colorado River to the Imperial Valley. The focus of this study was to gain a better understanding of the effect of lining the All-American Canal, and other management actions, on future total dissolved solids...
Authors
Alissa L. Coes, Michael Land, Jill N. Densmore, Michael T. Landrum, Kimberly R. Beisner, Jeffrey R. Kennedy, Jamie P. Macy, Fred D. Tillman
Alpha-emitting isotopes and chromium in a coastal California aquifer Alpha-emitting isotopes and chromium in a coastal California aquifer
The unadjusted 72-h gross alpha activities in water from two wells completed in marine and alluvial deposits in a coastal southern California aquifer 40 km north of San Diego were 15 and 25 picoCuries per liter (pCi/L). Although activities were below the Maximum Contaminant Level (MCL) of 15 pCi/L, when adjusted for uranium activity; there is concern that new wells in the area may exceed...
Authors
Jill N. Densmore, John A. Izbicki, Joseph M. Murtaugh, Peter W. Swarzenski, Thomas D. Bullen
Science and Products
Filter Total Items: 30
Geohydrology, geochemistry, and numerical simulation of groundwater flow and land subsidence in the Bicycle Basin, Fort Irwin National Training Center, California Geohydrology, geochemistry, and numerical simulation of groundwater flow and land subsidence in the Bicycle Basin, Fort Irwin National Training Center, California
Groundwater pumping from Bicycle Groundwater Basin (referred to as Bicycle Basin) in the Fort Irwin National Training Center, California, began in 1967. From 1967 to December 2010, about 46,000 acre-feet of water had been pumped from the basin and transported to the Irwin Basin. During this time, not only did water levels in the basin decline by as much as 100 feet, the quality of the...
Authors
Jill N. Densmore, Linda R. Woolfenden, Diane L. Rewis, Peter M. Martin, Michelle Sneed, Kevin M. Ellett, Michael Solt, David M. Miller
Against the current— The Mojave River from sink to source: The 2018 Desert Symposium field trip road log Against the current— The Mojave River from sink to source: The 2018 Desert Symposium field trip road log
The Mojave River evolved over the past few million years by “fill and spill” from upper basins near its source in the Transverse Ranges to lower basins. Each newly “spilled into” basin in the series? sustained a long-lived lake but gradually filled with Mojave River sediment, leading to spill to a yet lower elevation? basin. The Mojave River currently terminates at Silver Lake, near...
Authors
David M. Miller, R.E. Reynolds, Krishangi D. Groover, David C. Buesch, H. J. Brown, Geoffrey Cromwell, Jill N. Densmore, A.L. Garcia, D. Hughson, J.R. Knott, Jeffrey E. Lovich
Evaluation of the Source and Transport of High Nitrate Concentrations in Ground Water, Warren Subbasin, California Evaluation of the Source and Transport of High Nitrate Concentrations in Ground Water, Warren Subbasin, California
Ground water historically has been the sole source of water supply for the Town of Yucca Valley in the Warren subbasin of the Morongo ground-water basin, California. An imbalance between ground-water recharge and pumpage caused ground-water levels in the subbasin to decline by as much as 300 feet from the late 1940s through 1994. In response, the local water district, Hi-Desert Water...
Authors
Tracy Nishikawa, Jill N. Densmore, Peter Martin, Jonathan C. Matti
Water-resources and land-surface deformation evaluation studies at Fort Irwin National Training Center, Mojave Desert, California Water-resources and land-surface deformation evaluation studies at Fort Irwin National Training Center, Mojave Desert, California
The U.S. Army Fort Irwin National Training Center (NTC), in the Mojave Desert, obtains all of its potable water supply from three groundwater basins (Irwin, Langford, and Bicycle) within the NTC boundaries (fig. 1; California Department of Water Resources, 2003). Because of increasing water demands at the NTC, the U.S. Geological Survey (USGS), in cooperation with the U.S. Army...
Authors
Jill N. Densmore, Justine E. Dishart, David M. Miller, David C. Buesch, Lyndsay B. Ball, Paul A. Bedrosian, Linda R. Woolfenden, Geoffrey Cromwell, Matthew K. Burgess, Joseph Nawikas, David O’Leary, Adam Kjos, Michelle Sneed, Justin T. Brandt
Initial characterization of the groundwater system near the Lower Colorado Water Supply Project, Imperial Valley, California Initial characterization of the groundwater system near the Lower Colorado Water Supply Project, Imperial Valley, California
In 2009, the U.S. Geological Survey, in cooperation with the city of Needles, began a study of the hydrogeology along the All-American Canal, which conveys water from the Colorado River to the Imperial Valley. The focus of this study was to gain a better understanding of the effect of lining the All-American Canal, and other management actions, on future total dissolved solids...
Authors
Alissa L. Coes, Michael Land, Jill N. Densmore, Michael T. Landrum, Kimberly R. Beisner, Jeffrey R. Kennedy, Jamie P. Macy, Fred D. Tillman
Alpha-emitting isotopes and chromium in a coastal California aquifer Alpha-emitting isotopes and chromium in a coastal California aquifer
The unadjusted 72-h gross alpha activities in water from two wells completed in marine and alluvial deposits in a coastal southern California aquifer 40 km north of San Diego were 15 and 25 picoCuries per liter (pCi/L). Although activities were below the Maximum Contaminant Level (MCL) of 15 pCi/L, when adjusted for uranium activity; there is concern that new wells in the area may exceed...
Authors
Jill N. Densmore, John A. Izbicki, Joseph M. Murtaugh, Peter W. Swarzenski, Thomas D. Bullen