Scientists Collect Water Quality Data Prior to Wastewater Treatment Plant Upgrades
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Scientists Collect Water Quality Data
Scientists Collect Water Quality Data Prior to Wastewater Treatment Plant Upgrades
USGS Scientists Map Nutrients on Sacramento Delta
USGS Scientists Map Nutrients on Sacramento Delta
USGS Scientists Map Nutrients on Sacramento Delta
One-Water Hydrologic Flow Model cross section
One-Water Hydrologic Flow Model: A MODFLOW Based Conjunctive-Use Simulation Software (Boyce and others, 2020).
One-Water Hydrologic Flow Model: A MODFLOW Based Conjunctive-Use Simulation Software (Boyce and others, 2020).
Groundwater / Surface Water Interconnectivity
Diagram showing that water flow and use is interconnected through physically-based processes and management processes.
Diagram showing that water flow and use is interconnected through physically-based processes and management processes.
MODFLOW-2005 Framework
Diagram the MODFLOW-2005 framework and its descendants (Boyce and others, 2020)
Diagram the MODFLOW-2005 framework and its descendants (Boyce and others, 2020)
Land Use Change (1934 - 2005), Anza Valley, CA
Land use change in the Anza Valley, CA from 1934 to 2005.
Land use change in the Anza Valley, CA from 1934 to 2005.
Natural Recharge (1981 - 2010), Indian Wells Valley, CA
The USGS California Basin Characterization Model (BCM) was used to understand the rate and amounts of natural groundwater recharge in the Indian Wells Valley and to refine historical estimates of groundwater recharge in the valley.
The USGS California Basin Characterization Model (BCM) was used to understand the rate and amounts of natural groundwater recharge in the Indian Wells Valley and to refine historical estimates of groundwater recharge in the valley.
Pesticides in Streams Photo copy.jpg
Photo of stream in urban environment with green lawn beside it. Photo credit: Alan Cressler USGS
Photo of stream in urban environment with green lawn beside it. Photo credit: Alan Cressler USGS
Scientist adjusts equipment mounted on tower at the Suisun Marsh
USGS Research Scientist Ellen Goodrich-Stuart adjusts a CH4 (Methane) analyzer mounted on the eddy covariance flux tower at the Rush Ranch site at Suisun Marsh.
USGS Research Scientist Ellen Goodrich-Stuart adjusts a CH4 (Methane) analyzer mounted on the eddy covariance flux tower at the Rush Ranch site at Suisun Marsh.
Groundwater-level Response to the July 2019 Ridgecrest, CA Earthquakes
Locations of the July 2019 earthquake epicenters and six USGS groundwater-monitoring sites.
Locations of the July 2019 earthquake epicenters and six USGS groundwater-monitoring sites.
High-resolution Water Quality Mapping on California's Bay-Delta
Hydrologist Brian Bergamaschi is seen through the USGS California Water Science Center Biogeochemistry Group's underwater water quality mapping manifold.
Hydrologist Brian Bergamaschi is seen through the USGS California Water Science Center Biogeochemistry Group's underwater water quality mapping manifold.
Organic Matter Research Lab
Organic Matter Research Lab
Organic Matter Research Lab
Horiba Aqaulog
Horiba Aqaulog - simultaneously measures absorbance spectra and fluorescence
Horiba Aqaulog - simultaneously measures absorbance spectra and fluorescence
TOC-L Laboratory Total Organic Carbon Analyzer
TOC-L Laboratory Total Organic Carbon Analyzer
TOC-L Laboratory Total Organic Carbon Analyzer
Cary 300 Spectrophotometer
Cary 300 Spectrophotometer
Cary 300 Spectrophotometer
Carbon Lab
Carbon Lab
Laminar Flow hood in Carbon Lab
Laminar Flow hood in Carbon Lab
Laminar Flow hood in Carbon Lab
Fume Hood in Carbon Lab
Horiba Aqaulog - simultaneously measures absorbance spectra and fluorescence Excitation-Emission Matrices
Horiba Aqaulog - simultaneously measures absorbance spectra and fluorescence Excitation-Emission Matrices
Trace Metals Lab
Trace Metals Lab
Trace Metals Lab fume hood
Trace Metals Lab fume hood
Trace Metals Lab fume hood
Groundwater Response to the Ridgecrest, CA Earthquakes
Locations of the July 2019 Ridgecrest, CA earthquake epicenters and five USGS groundwater-monitoring sites with corresponding hydrographs. Effects from the two earthquakes were observed in several USGS continuous groundwater-level monitoring sites in California, Nevada, and Arizona.
Locations of the July 2019 Ridgecrest, CA earthquake epicenters and five USGS groundwater-monitoring sites with corresponding hydrographs. Effects from the two earthquakes were observed in several USGS continuous groundwater-level monitoring sites in California, Nevada, and Arizona.