This is a screenshot of the web tool: Legacy Mercury Contamination from Historical Gold Mining.
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
screenshot of web tool
This is a screenshot of the web tool: Legacy Mercury Contamination from Historical Gold Mining.
View of San Francisco from the USGS research vessel.
View of San Francisco from the USGS research vessel. The goal of this study was to identify the reasons for discrepancies between fChl measurements made under different sampling conditions.
View of San Francisco from the USGS research vessel. The goal of this study was to identify the reasons for discrepancies between fChl measurements made under different sampling conditions.
Sample map - Legacy Mercury Contamination in California’s Sierra Nevada
Sample map - Legacy Mercury Contamination in California’s Sierra Nevada. This map show locations of remediation efforts.
Sample map - Legacy Mercury Contamination in California’s Sierra Nevada. This map show locations of remediation efforts.
Historical photo is of the Malakoff Diggins hydraulic gold mine
Historical photo of the Malakoff Diggins hydraulic gold mine in the Sierra Nevada in California.
Historical photo of the Malakoff Diggins hydraulic gold mine in the Sierra Nevada in California.
September 2024 Klamath Map
Shows which stage of removal dams are in. he Klamath River in southern Oregon and northern California is now running freer. In late 2023 and early 2024, four of the six dams along the river were breached and reservoirs drained. These actions were part of an effort to restore hundreds of miles of riparian habitat.
Shows which stage of removal dams are in. he Klamath River in southern Oregon and northern California is now running freer. In late 2023 and early 2024, four of the six dams along the river were breached and reservoirs drained. These actions were part of an effort to restore hundreds of miles of riparian habitat.
Pseudacris sierra - Sierran Treefrog
This is a photo of a Sierran Treefrog (Pseudacris sierra). It was one of the taxa sampled in the study: Legacy Mercury Contamination from Historical Gold Mining.
This is a photo of a Sierran Treefrog (Pseudacris sierra). It was one of the taxa sampled in the study: Legacy Mercury Contamination from Historical Gold Mining.
Videos
Heterosigma akashiwo collected from Seaplane Lagoon in San Francisco Bay
Heterosigma 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 on August 9, 2022. Video was taken with an ioLight 1mm microscope.
High flow at USGS streamgage 11172945 on Alameda Creek, California
High 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 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.
How USGS Streamgages Work
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 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. 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.
Conventional Level Data Management
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).
PubTalk 3/2019 - Land Subsidence
Title: Land Subsidence: The Lowdown on the Draw-down
The link between groundwater use and sinking landscapes
Title: Land Subsidence: The Lowdown on the Draw-down
The link between groundwater use and sinking landscapes
Audio
The Water Beneath Our Feet: New Study on California's Central Valley Groundwater Level Decline
SGS hydrologist Dr. Claudia Faunt discusses her new study about Calfornia's vast central valley groundwater system and the new study findings.
SGS hydrologist Dr. Claudia Faunt discusses her new study about Calfornia's vast central valley groundwater system and the new study findings.
Webcams
Middle River at Middle River Webcam
The name of this webcam is Middle River at Middle River. It is located at Middle River, CA. The timelapse length is 10 seconds (100 images) and the collection interval is every 15 minutes.
The name of this webcam is Middle River at Middle River. It is located at Middle River, CA. The timelapse length is 10 seconds (100 images) and the collection interval is every 15 minutes.
North Mokelumne River near Walnut Grove Webcam
The name of this camera is North Mokelumne River near Walnut Grove. It is located near Walnut Grove, CA. The timelapse length is 10 seconds (100 images) and the collection interval is every 15 minutes.
The name of this camera is North Mokelumne River near Walnut Grove. It is located near Walnut Grove, CA. The timelapse length is 10 seconds (100 images) and the collection interval is every 15 minutes.
Dutch Slough below Jersey Island Road at Jersey Island Webcam
The name of this webcam is Dutch Slough below Jersey Island Road at Jersey Island. It is located at Jersey Island, CA. The timelapse length is 10 seconds (100 images) and the collection interval is every 15 minutes.
The name of this webcam is Dutch Slough below Jersey Island Road at Jersey Island. It is located at Jersey Island, CA. The timelapse length is 10 seconds (100 images) and the collection interval is every 15 minutes.
Old River at Quimby Island near Bethel Webcam
The name of this webcam is Old River at Quimby Island near Bethel. It is located near Bethel, CA. The timelapse length is 10 seconds (100 images) and the collection interval is every 15 minutes.
The name of this webcam is Old River at Quimby Island near Bethel. It is located near Bethel, CA. The timelapse length is 10 seconds (100 images) and the collection interval is every 15 minutes.
Sacramento River at Freeport Webcam
The name of this webcam is Sacramento River at Freeport. It is located at Freeport, CA. The timelapse length is 10 seconds (100 images) and the collection interval is every 60 minutes.
The name of this webcam is Sacramento River at Freeport. It is located at Freeport, CA. The timelapse length is 10 seconds (100 images) and the collection interval is every 60 minutes.
Sacramento R A Channel Marker 5 A Collinsville Webcam
The name of this camera is Sacramento R A Channel Marker 5 A Collinsville. It is located in Collinsville, CA. The timelapse length is 10 seconds (100 images) and the collection interval is every 15 minutes.
The name of this camera is Sacramento R A Channel Marker 5 A Collinsville. It is located in Collinsville, CA. The timelapse length is 10 seconds (100 images) and the collection interval is every 15 minutes.