Real-time monitoring station on the Pepperwood Preserve, Sonoma County, CA. This station measures precipitation, air temperature, humidity, wind speed and direction, soil moisture, electric conductivity, and soil temperature.
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Real-time Monitoring Station
Real-time monitoring station on the Pepperwood Preserve, Sonoma County, CA. This station measures precipitation, air temperature, humidity, wind speed and direction, soil moisture, electric conductivity, and soil temperature.
Los Angeles Coastal Plain Groundwater-flow Model
Complex aquifer system simulated in the Los Angeles Coastal Plain, California.
Complex aquifer system simulated in the Los Angeles Coastal Plain, California.
The Mojave River: A 3D Journey
The Mojave River is the largest of the streams and rivers that flow through southwestern San Bernardino County, CA. It extends more than 100 miles east from its source in the San Bernardino Mountains to the end east of Afton Canyon. This 3D animation takes the viewer on a tour of the entire length of the river.
The Mojave River is the largest of the streams and rivers that flow through southwestern San Bernardino County, CA. It extends more than 100 miles east from its source in the San Bernardino Mountains to the end east of Afton Canyon. This 3D animation takes the viewer on a tour of the entire length of the river.
Sampling for Clear Lake Hitch
The Clear Lake Hitch was formerly highly abundant and a staple food for the Pomo tribes of the Clear Lake region. The original abundance of this fish species is unknown but is believed to have declined 100-fold.
The Clear Lake Hitch was formerly highly abundant and a staple food for the Pomo tribes of the Clear Lake region. The original abundance of this fish species is unknown but is believed to have declined 100-fold.
Scientists aboard research vessel conduct water-quality mapping
Scientists aboard R/V Aiken conduct water-quality mapping in support of wastewater-derived nutrients project
Scientists aboard R/V Aiken conduct water-quality mapping in support of wastewater-derived nutrients project
USGS scientist, Katy O'Donnell, monitoring instruments on a boat.
USGS scientist, Katy O'Donnell, monitoring instruments onboard a high-speed mapping boat.
USGS scientist, Katy O'Donnell, monitoring instruments onboard a high-speed mapping boat.
Hydrologic technicians deploying a flow sensor.
Hydrologic technicians deploying a flow sensor on a shoal in San Francisco Bay.
Hydrologic technicians deploying a flow sensor on a shoal in San Francisco Bay.
Scientists heading out to deploy sensors.
Scientists heading out to deploy sensors for sediment nutrient storage and release.
Scientists heading out to deploy sensors for sediment nutrient storage and release.
Delta wetland near Rio Vista, California.
Delta wetland near Rio Vista, California.
Delta wetland near Rio Vista, California.
Los Angeles River at USGS Streamgage 11092450 near Sepulveda Dam
A concrete-lined stretch of the Los Angeles River that runs near Sepulveda Dam. USGS streamgage 11092450 can be seen in the lower left along the river wall. Restoration is planned for this stretch of the river that runs through the San Fernando Valley.
A concrete-lined stretch of the Los Angeles River that runs near Sepulveda Dam. USGS streamgage 11092450 can be seen in the lower left along the river wall. Restoration is planned for this stretch of the river that runs through the San Fernando Valley.
Irrigated Land Use, Adelaida Area, San Luis Obispo County, CA
Irrigated land-use in the Adelaida Area of San Luis Obisbo County, CA for 1984, 1996, 2004, 2014, and 2016. Numbers indicate acres and percent of total acres.
Irrigated land-use in the Adelaida Area of San Luis Obisbo County, CA for 1984, 1996, 2004, 2014, and 2016. Numbers indicate acres and percent of total acres.
USGS_delta_naturephotograph.jpg
Channel in Sacramento-San Joaquin Delta with lots of vegetation and clouds and blue sky.
Channel in Sacramento-San Joaquin Delta with lots of vegetation and clouds and blue sky.
Trace 1310 GC with a TSQ 9000 triple quadrupole MS (Thermo Scientific)
Trace 1310 GC with a TSQ 9000 triple quadrupole MS (Thermo Scientific)
Trace 1310 GC with a TSQ 9000 triple quadrupole MS (Thermo Scientific)
Scientists Collect Water Quality Data
Scientists Collect Water Quality Data Prior to Wastewater Treatment Plant Upgrades
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.
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
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.