A Pacific Golden-Plover in Alaska. Photograph by Daniel R. Ruthrauff, USGS, Public Domain.
Multimedia
Multimedia products allow us to distribute information to the public. The California Water Science Center has a variety of materials available, including webcasts, videos, and images.
Images
A Pacific Golden-Plover in Alaska. Photograph by Daniel R. Ruthrauff, USGS, Public Domain.
A drone view of where scientists gathered shellfish samples at Martinez Harbor, Contra Costa County.
A drone view of where scientists gathered shellfish samples at Martinez Harbor, Contra Costa County.A drone view of where scientists with the U.S. Geological Survey gathered shellfish samples collected at Martinez Harbor, Contra Costa County.
A drone view of where scientists gathered shellfish samples at Martinez Harbor, Contra Costa County.
A drone view of where scientists gathered shellfish samples at Martinez Harbor, Contra Costa County.A drone view of where scientists with the U.S. Geological Survey gathered shellfish samples collected at Martinez Harbor, Contra Costa County.
Drone view of where scientists gathered shellfish samples at Martinez Harbor, Contra Costa County.
Drone view of where scientists gathered shellfish samples at Martinez Harbor, Contra Costa County.A drone view of where scientists with the U.S. Geological Survey and Restore the Delta gathered shellfish samples collected at Martinez Harbor, Contra Costa County. The shrimp are tested for levels of toxins found in Harmful Algal Blooms (HABs).
Drone view of where scientists gathered shellfish samples at Martinez Harbor, Contra Costa County.
Drone view of where scientists gathered shellfish samples at Martinez Harbor, Contra Costa County.A drone view of where scientists with the U.S. Geological Survey and Restore the Delta gathered shellfish samples collected at Martinez Harbor, Contra Costa County. The shrimp are tested for levels of toxins found in Harmful Algal Blooms (HABs).
Gathering and measuring shellfish samples collected at Martinez Harbor, Contra Costa County, California
Gathering and measuring shellfish samples collected at Martinez Harbor, Contra Costa County, CaliforniaZoë Siman-Tov (left), a Hydrologic Technician with the U.S. Geological Survey, and Amelia Ayers (center), a Physical Scientist with USGS, gather and measure shellfish samples collected at Martinez Harbor, Contra Costa County. The shellfish trap is baited and deployed for two days in the water before being retrieved.
Gathering and measuring shellfish samples collected at Martinez Harbor, Contra Costa County, California
Gathering and measuring shellfish samples collected at Martinez Harbor, Contra Costa County, CaliforniaZoë Siman-Tov (left), a Hydrologic Technician with the U.S. Geological Survey, and Amelia Ayers (center), a Physical Scientist with USGS, gather and measure shellfish samples collected at Martinez Harbor, Contra Costa County. The shellfish trap is baited and deployed for two days in the water before being retrieved.
A drone view of Martinez Harbor, Contra Costa County.
A drone view of Martinez Harbor, Contra Costa County.A drone view of where scientists with the U.S. Geological Survey gathered shellfish samples collected at Martinez Harbor, Contra Costa County.
A drone view of Martinez Harbor, Contra Costa County.
A drone view of Martinez Harbor, Contra Costa County.A drone view of where scientists with the U.S. Geological Survey gathered shellfish samples collected at Martinez Harbor, Contra Costa County.
Scientist packs up gear used to gather shellfish samples
Scientist packs up gear used to gather shellfish samplesAmelia Ayers, a Physical Scientist with the U.S. Geological Survey, packs up the equipment used to gather shellfish samples collected at Martinez Harbor, Contra Costa County, California. The shellfish trap and composite samplers are attached to a rope with a heavy weight and deployed in the water. It is retrieved once or twice a month depending on the season.
Scientist packs up gear used to gather shellfish samples
Scientist packs up gear used to gather shellfish samplesAmelia Ayers, a Physical Scientist with the U.S. Geological Survey, packs up the equipment used to gather shellfish samples collected at Martinez Harbor, Contra Costa County, California. The shellfish trap and composite samplers are attached to a rope with a heavy weight and deployed in the water. It is retrieved once or twice a month depending on the season.
Videos
Legacy Mercury Contamination from Historical Gold Mining
Legacy Mercury Contamination from Historical Gold MiningMercury contamination from historic gold mining represents a potential risk to human health and the environment. There is a lack of public awareness of the history mercury use in gold mining and how it contributed to this situation, and also what the present concerns are. Specifically, the public is not aware of locations and levels of contamination.
Legacy Mercury Contamination from Historical Gold Mining
Legacy Mercury Contamination from Historical Gold MiningMercury contamination from historic gold mining represents a potential risk to human health and the environment. There is a lack of public awareness of the history mercury use in gold mining and how it contributed to this situation, and also what the present concerns are. Specifically, the public is not aware of locations and levels of contamination.
Heterosigma akashiwo collected from Seaplane Lagoon in San Francisco Bay
Heterosigma akashiwo collected from Seaplane Lagoon in San Francisco BayHeterosigma akashiwo collected from Seaplane Lagoon in San Francisco Bay on August 9, 2022. Video was taken with an ioLight 1mm microscope.
Heterosigma akashiwo collected from Seaplane Lagoon in San Francisco Bay
Heterosigma akashiwo collected from Seaplane Lagoon in San Francisco BayHeterosigma akashiwo collected from Seaplane Lagoon in San Francisco Bay on August 9, 2022. Video was taken with an ioLight 1mm microscope.
water crashing over a dam spillway
High flow at USGS streamgage 11172945 on Alameda Creek, California
High flow at USGS streamgage 11172945 on Alameda Creek, CaliforniaHigh flows at streamgage 11172945 (Alameda Creek above Div Dam near Sunol, California) were captured by USGS hydrologic technician Louis Cannarozzi on 12/31/2022. Heavy precipitation caused higher-than-normal streamflow in many areas as an atmospheric river moved through northern California.
High flow at USGS streamgage 11172945 on Alameda Creek, California
High flow at USGS streamgage 11172945 on Alameda Creek, CaliforniaHigh flows at streamgage 11172945 (Alameda Creek above Div Dam near Sunol, California) were captured by USGS hydrologic technician Louis Cannarozzi on 12/31/2022. Heavy precipitation caused higher-than-normal streamflow in many areas as an atmospheric river moved through northern California.
This video explains how streamgages are used to measure the height and flow, or speed, of streams. By monitoring the height and flow of streams, the people who manage water infrastructure can have advanced noted of when the water is rising and how fast it’s coming.
This video explains how streamgages are used to measure the height and flow, or speed, of streams. By monitoring the height and flow of streams, the people who manage water infrastructure can have advanced noted of when the water is rising and how fast it’s coming.
USGS Scientists Collect Water Quality Samples in the San Francisco Bay
USGS Scientists Collect Water Quality Samples in the San Francisco BayUSGS scientists collect water quality samples in the San Francisco Bay. The samples have been collected at the same locations for >50 years and are part of one of the longest running datasets of its kind in the United States.
USGS Scientists Collect Water Quality Samples in the San Francisco Bay
USGS Scientists Collect Water Quality Samples in the San Francisco BayUSGS scientists collect water quality samples in the San Francisco Bay. The samples have been collected at the same locations for >50 years and are part of one of the longest running datasets of its kind in the United States.
This video describes how to use the SAC conversion spreadsheet to convert data from a conventional level in angles and distances (polar coordinates) to Cartesian coordinates (northings and eastings).
This video describes how to use the SAC conversion spreadsheet to convert data from a conventional level in angles and distances (polar coordinates) to Cartesian coordinates (northings and eastings).
Audio
The Water Beneath Our Feet: New Study on California's Central Valley Groundwater Level Decline
The Water Beneath Our Feet: New Study on California's Central Valley Groundwater Level DeclineSGS hydrologist Dr. Claudia Faunt discusses her new study about Calfornia's vast central valley groundwater system and the new study findings.
The Water Beneath Our Feet: New Study on California's Central Valley Groundwater Level Decline
The Water Beneath Our Feet: New Study on California's Central Valley Groundwater Level DeclineSGS hydrologist Dr. Claudia Faunt discusses her new study about Calfornia's vast central valley groundwater system and the new study findings.
Webcams
The name of this webcam is THREEMILE SLOUGH NR RIO VISTA. It is located in Rio Vista, CA. The timelapse length is 10 seconds (100 images) and the collection interval is every 15 minutes.
The name of this webcam is THREEMILE SLOUGH NR RIO VISTA. It is located in Rio Vista, CA. The timelapse length is 10 seconds (100 images) and the collection interval is every 15 minutes.
The name of this webcam is Topanga C A Hwy 1 Bridge nr Malibu. It is located in Malibu, CA. The timelapse length is 10 seconds (100 images) and the collection interval is every 15 minutes.
The name of this webcam is Topanga C A Hwy 1 Bridge nr Malibu. It is located in Malibu, CA. The timelapse length is 10 seconds (100 images) and the collection interval is every 15 minutes.

South Mokelumne River at New Hope Bridge near Walnut Grove webcam
South Mokelumne River at New Hope Bridge near Walnut Grove webcamThe name of this webcam is South Mokelumne River at New Hope Bridge near Walnut Grove. It is located at in Walnut Grove, CA. The timelapse length is 10 seconds (100 images) and the collection interval is every 15 minutes.
South Mokelumne River at New Hope Bridge near Walnut Grove webcam
South Mokelumne River at New Hope Bridge near Walnut Grove webcamThe name of this webcam is South Mokelumne River at New Hope Bridge near Walnut Grove. It is located at in Walnut Grove, CA. The timelapse length is 10 seconds (100 images) and the collection interval is every 15 minutes.
The name of this webcam is Salinas River at Bradley. It is located in Bradley, CA. The timelapse length is 10 seconds (100 images) and the collection interval is every 15 minutes.
The name of this webcam is Salinas River at Bradley. It is located in Bradley, CA. The timelapse length is 10 seconds (100 images) and the collection interval is every 15 minutes.
The name of this webcam is Truckee River at Boca Bridge near Truckee. It is located at in Truckee, CA. The timelapse length is 10 seconds (100 images) and the collection interval is every 15 minutes.
The name of this webcam is Truckee River at Boca Bridge near Truckee. It is located at in Truckee, CA. The timelapse length is 10 seconds (100 images) and the collection interval is every 15 minutes.
The name of this webcam is False River Near Oakley. It is located in Oakley, CA. The timelapse length is 10 seconds (100 images) and the collection interval is every 15 minutes.
The name of this webcam is False River Near Oakley. It is located in Oakley, CA. The timelapse length is 10 seconds (100 images) and the collection interval is every 15 minutes.




