This picture shows the Mojave River in southern California during a high flow stage.
Steve Ackley
Steve Ackley - Public Affairs Specialist - California Water Science Center
As a science communicator at the U.S. Geological Survey (USGS), Steve Ackley has spent the past seven years bridging the gap between science and public understanding. Before joining the USGS, he spent over twenty years in high-tech marketing after starting his career as a high school English teacher.
Science and Products
USGS Participates in 2021 Orange County Youth Environmental Summit USGS Participates in 2021 Orange County Youth Environmental Summit
From April 19th through the 23rd, 2021, the USGS California Water Science Center (CAWSC) participated in the first virtual Orange County Youth Environmental Summit (YES). The award-winning program, formerly known as the Children's Water Education Festival, offers 3rd, 4th, and 5th graders opportunities for learning and engagement. Through interactive sessions, YES teaches youth that
USGS Participates in Earth Day Festivities on Alcatraz Island USGS Participates in Earth Day Festivities on Alcatraz Island
On April 20th, the USGS California Water Science Center (CAWSC) participated in annual Earth Day festivities on Alcatraz Island in San Francisco Bay. Involvement in the event included science presentations on the island, demonstrating the ongoing research of the USGS Estuarine Hydrodynamics and Sediment Transport team based in Sacramento.
Low Intensity Chemical Dosing (LICD)
Rivers, wetlands, and agricultural operations supply natural organic material to the Sacramento-San Joaquin Delta (Delta) and the San Francisco Estuary. This natural organic matter provides many ecosystem benefits, but it also adversely affects drinking water. During drinking water treatment, chlorine added for purposes of pathogen control reacts with dissolved organic carbon (DOC) in the water to...
California Water Use
The U.S. Geological Survey's National Water-Use Information Program compiles the nation's water-use data at the county, state, and national levels. USGS five-year reports on national and state water-use estimates between 1950-2015 are posted on the web at: https://water.usgs.gov/watuse/. USGS water-use data for states and counties for 1985-2015 are available at: https://waterdata.usgs.gov/nwis/wu.
Wildfire Effect on Mercury Levels in Putah and Cache Creek Watersheds
A serious consequence of wildfires is the erosion which occurs during storm events in areas where vegetation has been burned away. In cases where such land is near a creek or stream, mercury (Hg) and other contaminants from the eroding soil can make their way into the waterways, impacting the health of fish and wildlife, and the quality of the water supply for local communities (see: USGS Fact...
Effects of Aquatic Vegetation on Water Quality and Residence Time in the Bay-Delta
The spread of invasive aquatic vegetation in the Sacramento-San Joaquin Delta is having a profound impact on the Delta’s natural habitat. The presence of these “aquatic weeds” has been shown to alter water velocity and increase water clarity, posing threats to native fish species, specifically the threatened Delta Smelt. These aquatic plants can also affect the foodweb by altering nutrient...
Temecula Hydrogeology
This site provides hydrologic data collected or compiled by the USGS for the Temecula area; some additional data may be available from the USGS database National Water Information System (NWIS).
San Bernardino Optimal Basin Management
The San Bernardino area of southern California has complex water-management issues. As an aid to local water managers, this report provides an integrated analysis of the surface-water and ground-water systems, documents ground-water flow and constrained optimization models, and provides seven examples using the models to better understand and manage water resources of the area. As an aid to...
Ground-Water Nitrate and Organic Carbon Inputs to the Lower San Joaquin River
This proposal addresses drinking water and aquatic habitat issues associated with nitrate and organic carbon in the lower San Joaquin River (SJR).
California Water Use, 2010
In 2010, Californians withdrew an estimated total of 38 billion gallons of water per day, compared with 46 billion gallons per day in 2005.
New Methods to Measure Reservoir Storage Capacity and Sedimentation in Loch Lomond Reservoir
A new method of measuring the storage capacity and sedimentation of Loch Lomond Reservoir, Santa Cruz shows promise to help water managers more effectively assess changes in water-storage capacity in similar basins with steep, narrow drainages in mountainous terrain. The method employs a combination of bathymetric scanning using multibeam-sidescan sonar, and topographic surveying using laser...
Sources of Microbial Contamination at Public Beaches, Santa Barbara
The focus of this study is on analysis of existing hydrologic, chemical, and microbiological data; collection of surface-water and shallow ground-water hydrologic, chemical, and microbiological data; and characterization of dissolved organic carbon composition.
Filter Total Items: 25
Mojave River during high flow
This picture shows the Mojave River in southern California during a high flow stage.
Crowd gathered at 2025 Tahoe Summit
Crown gathered at 2025 Tahoe Summit. The Lake Tahoe Summit is an annual event that brings local, federal, and state leaders together to discuss ways to protect Lake Tahoe and strengthen the partnership underlying the Lake Tahoe Environmental Improvement Program.
Crown gathered at 2025 Tahoe Summit. The Lake Tahoe Summit is an annual event that brings local, federal, and state leaders together to discuss ways to protect Lake Tahoe and strengthen the partnership underlying the Lake Tahoe Environmental Improvement Program.
USGS booth at 2025 Tahoe Summit.
USGS booth at 2025 Tahoe Summit. Pictured from left, Sara Doyle (NV WSC), Zach Hood (NV WSC), David Smith (NV WSC), Ed Parvin (CAWSC) and Mark Dickman (CAWSC). Photograph by Ramon Naranjo (NV WSC) on 8/6/25.
USGS booth at 2025 Tahoe Summit. Pictured from left, Sara Doyle (NV WSC), Zach Hood (NV WSC), David Smith (NV WSC), Ed Parvin (CAWSC) and Mark Dickman (CAWSC). Photograph by Ramon Naranjo (NV WSC) on 8/6/25.
PIT tag reader being tested
This photo shows a passive integrated transponder (PIT) tag reader being used to test a tagged Santa Ana Sucker.
This photo shows a passive integrated transponder (PIT) tag reader being used to test a tagged Santa Ana Sucker.
Raceways at the RCD facility
The above photos show raceways at the Riverside Corona Resource Conservation District (RCD) facility.
The above photos show raceways at the Riverside Corona Resource Conservation District (RCD) facility.
Santa Ana Sucker research team
The photo shows members of the research team. From left to right: Tevin Bui (RCD), Jordan Buxton (USGS), Brett Mills (RCD), Alicia Ruan (RCD), and Brock Huntsman (USGS). Inset at right are Marissa Wulff (top) and Jeff Gronemyer (bottom), both of the USGS.
The photo shows members of the research team. From left to right: Tevin Bui (RCD), Jordan Buxton (USGS), Brett Mills (RCD), Alicia Ruan (RCD), and Brock Huntsman (USGS). Inset at right are Marissa Wulff (top) and Jeff Gronemyer (bottom), both of the USGS.
Poster Presenters at 2025 IEP Workshop
CAWSC poster presenters at 2025 IEP Workshop. Clockwise from upper left: Anna Conlen, Elise Shea, Lex Thomas, Zoё Siman-Tov, Bryan Gopez, Emma Walker, David Hart, Maura Uebner, Lawrence Fujiwara, Trevor Violette.
CAWSC poster presenters at 2025 IEP Workshop. Clockwise from upper left: Anna Conlen, Elise Shea, Lex Thomas, Zoё Siman-Tov, Bryan Gopez, Emma Walker, David Hart, Maura Uebner, Lawrence Fujiwara, Trevor Violette.
CAWSC Biogeochemistry group at 2025 IEP Workshop
CAWSC Biogeochemistry group at 2025 IEP Workshop. Left to Right: Back Row - Maura Uebner, Keith Bouma-Gregson, Kyle Leathers; Middle Row - Crystal Sturgeon, Zoё Siman-Tov, Lane Bratz, Emily Richardson, Tamara Kraus, Alex Ryan; Front Row - Nick Framsted
CAWSC Biogeochemistry group at 2025 IEP Workshop. Left to Right: Back Row - Maura Uebner, Keith Bouma-Gregson, Kyle Leathers; Middle Row - Crystal Sturgeon, Zoё Siman-Tov, Lane Bratz, Emily Richardson, Tamara Kraus, Alex Ryan; Front Row - Nick Framsted
Active (or moving) camera footage of Santa Ana Sucker
Active (or moving) camera footage of Santa Ana SuckerActive (or moving) camera footage of Santa Ana Sucker (Pantosteus santaanae). Cameras were attached to “selfie sticks” and walked up and down the raceways (or fabricated streams).
Active (or moving) camera footage of Santa Ana Sucker
Active (or moving) camera footage of Santa Ana SuckerActive (or moving) camera footage of Santa Ana Sucker (Pantosteus santaanae). Cameras were attached to “selfie sticks” and walked up and down the raceways (or fabricated streams).
Open-source image recognition footage of Santa Ana Sucker lure
Open-source image recognition footage of Santa Ana Sucker lureAn open-source image recognition program was used to detect the fish and lures in the videos. The program was “trained” to recognize the fish and lures by exposing it to approximately 800 images of fish and non-fish.
Open-source image recognition footage of Santa Ana Sucker lure
Open-source image recognition footage of Santa Ana Sucker lureAn open-source image recognition program was used to detect the fish and lures in the videos. The program was “trained” to recognize the fish and lures by exposing it to approximately 800 images of fish and non-fish.
Sample map - Legacy Mercury Contamination in California’s Sierra Nevada
Sample map - Legacy Mercury Contamination in California’s Sierra NevadaSample 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
Sample map - Legacy Mercury Contamination in California’s Sierra NevadaSample 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 is of the Malakoff Diggins hydraulic gold mineHistorical photo of the Malakoff Diggins hydraulic gold mine in the Sierra Nevada in California.
Historical photo is of the Malakoff Diggins hydraulic gold mine
Historical photo is of the Malakoff Diggins hydraulic gold mineHistorical photo of the Malakoff Diggins hydraulic gold mine in the Sierra Nevada in California.
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.
Photo of members of the team associated with USGS research done in collaboration with UC Davis.
Photo of members of the team associated with USGS research done in collaboration with UC Davis.The above photo includes members of the team associated with research done in collaboration with UC Davis. From left to right, Angela DePalma-Dow (Lake County, conference co-organizer), Sergio Valbuena (UC Davis), Charles Alpers (USGS), Alicia Cortes (UC Davis), and Samantha Sharp (UC Davis).
Photo of members of the team associated with USGS research done in collaboration with UC Davis.
Photo of members of the team associated with USGS research done in collaboration with UC Davis.The above photo includes members of the team associated with research done in collaboration with UC Davis. From left to right, Angela DePalma-Dow (Lake County, conference co-organizer), Sergio Valbuena (UC Davis), Charles Alpers (USGS), Alicia Cortes (UC Davis), and Samantha Sharp (UC Davis).
Attaching solar panel and antennae
USGS scientists attaching solar panel and antennae to soil moisture response unit.
USGS scientists attaching solar panel and antennae to soil moisture response unit.
Squirrel Creek Panorama
Panorama of area near Squirrel Creek soil moisture response unit installation in California's Feather River watershed.
Panorama of area near Squirrel Creek soil moisture response unit installation in California's Feather River watershed.
Digging pit for the soil moisture sensors
A team member helps dig the pit for the soil moisture sensors in the Plumas National Forest in California. Inset: close-up of soil removed from Squirrel Creek pit.
A team member helps dig the pit for the soil moisture sensors in the Plumas National Forest in California. Inset: close-up of soil removed from Squirrel Creek pit.
Soil moisture sensors positioned in pit.
Soil moisture sensors positioned in pit at different depths. Inset: close-up of sensor showing the two probes that gather the data.
Soil moisture sensors positioned in pit at different depths. Inset: close-up of sensor showing the two probes that gather the data.
Soil moisture monitoring station mast assembly
Shown clockwise from top left are: 1] setting up mast to support the station components, 2] installing data logging and transmitting equipment, 3] attaching solar panel and antennae, 4] finished assembly.
Shown clockwise from top left are: 1] setting up mast to support the station components, 2] installing data logging and transmitting equipment, 3] attaching solar panel and antennae, 4] finished assembly.
Soil monitoring station installation team. USGS and USDA.
Soil monitoring station installation team. USGS and USDA.Soil monitoring station installation team, with personnel from USGS and USDA, at Squirrel Creek installation site.
Soil monitoring station installation team. USGS and USDA.
Soil monitoring station installation team. USGS and USDA.Soil monitoring station installation team, with personnel from USGS and USDA, at Squirrel Creek installation site.
Scientist checks soil moisture data logging and transmission components
Scientist checks soil moisture data logging and transmission componentsUSGS Hydrologist Jim Howle checks data logging and transmission components using a laptop computer.
Scientist checks soil moisture data logging and transmission components
Scientist checks soil moisture data logging and transmission componentsUSGS Hydrologist Jim Howle checks data logging and transmission components using a laptop computer.
Science and Products
USGS Participates in 2021 Orange County Youth Environmental Summit USGS Participates in 2021 Orange County Youth Environmental Summit
From April 19th through the 23rd, 2021, the USGS California Water Science Center (CAWSC) participated in the first virtual Orange County Youth Environmental Summit (YES). The award-winning program, formerly known as the Children's Water Education Festival, offers 3rd, 4th, and 5th graders opportunities for learning and engagement. Through interactive sessions, YES teaches youth that
USGS Participates in Earth Day Festivities on Alcatraz Island USGS Participates in Earth Day Festivities on Alcatraz Island
On April 20th, the USGS California Water Science Center (CAWSC) participated in annual Earth Day festivities on Alcatraz Island in San Francisco Bay. Involvement in the event included science presentations on the island, demonstrating the ongoing research of the USGS Estuarine Hydrodynamics and Sediment Transport team based in Sacramento.
Low Intensity Chemical Dosing (LICD)
Rivers, wetlands, and agricultural operations supply natural organic material to the Sacramento-San Joaquin Delta (Delta) and the San Francisco Estuary. This natural organic matter provides many ecosystem benefits, but it also adversely affects drinking water. During drinking water treatment, chlorine added for purposes of pathogen control reacts with dissolved organic carbon (DOC) in the water to...
California Water Use
The U.S. Geological Survey's National Water-Use Information Program compiles the nation's water-use data at the county, state, and national levels. USGS five-year reports on national and state water-use estimates between 1950-2015 are posted on the web at: https://water.usgs.gov/watuse/. USGS water-use data for states and counties for 1985-2015 are available at: https://waterdata.usgs.gov/nwis/wu.
Wildfire Effect on Mercury Levels in Putah and Cache Creek Watersheds
A serious consequence of wildfires is the erosion which occurs during storm events in areas where vegetation has been burned away. In cases where such land is near a creek or stream, mercury (Hg) and other contaminants from the eroding soil can make their way into the waterways, impacting the health of fish and wildlife, and the quality of the water supply for local communities (see: USGS Fact...
Effects of Aquatic Vegetation on Water Quality and Residence Time in the Bay-Delta
The spread of invasive aquatic vegetation in the Sacramento-San Joaquin Delta is having a profound impact on the Delta’s natural habitat. The presence of these “aquatic weeds” has been shown to alter water velocity and increase water clarity, posing threats to native fish species, specifically the threatened Delta Smelt. These aquatic plants can also affect the foodweb by altering nutrient...
Temecula Hydrogeology
This site provides hydrologic data collected or compiled by the USGS for the Temecula area; some additional data may be available from the USGS database National Water Information System (NWIS).
San Bernardino Optimal Basin Management
The San Bernardino area of southern California has complex water-management issues. As an aid to local water managers, this report provides an integrated analysis of the surface-water and ground-water systems, documents ground-water flow and constrained optimization models, and provides seven examples using the models to better understand and manage water resources of the area. As an aid to...
Ground-Water Nitrate and Organic Carbon Inputs to the Lower San Joaquin River
This proposal addresses drinking water and aquatic habitat issues associated with nitrate and organic carbon in the lower San Joaquin River (SJR).
California Water Use, 2010
In 2010, Californians withdrew an estimated total of 38 billion gallons of water per day, compared with 46 billion gallons per day in 2005.
New Methods to Measure Reservoir Storage Capacity and Sedimentation in Loch Lomond Reservoir
A new method of measuring the storage capacity and sedimentation of Loch Lomond Reservoir, Santa Cruz shows promise to help water managers more effectively assess changes in water-storage capacity in similar basins with steep, narrow drainages in mountainous terrain. The method employs a combination of bathymetric scanning using multibeam-sidescan sonar, and topographic surveying using laser...
Sources of Microbial Contamination at Public Beaches, Santa Barbara
The focus of this study is on analysis of existing hydrologic, chemical, and microbiological data; collection of surface-water and shallow ground-water hydrologic, chemical, and microbiological data; and characterization of dissolved organic carbon composition.
Filter Total Items: 25
Mojave River during high flow
This picture shows the Mojave River in southern California during a high flow stage.
This picture shows the Mojave River in southern California during a high flow stage.
Crowd gathered at 2025 Tahoe Summit
Crown gathered at 2025 Tahoe Summit. The Lake Tahoe Summit is an annual event that brings local, federal, and state leaders together to discuss ways to protect Lake Tahoe and strengthen the partnership underlying the Lake Tahoe Environmental Improvement Program.
Crown gathered at 2025 Tahoe Summit. The Lake Tahoe Summit is an annual event that brings local, federal, and state leaders together to discuss ways to protect Lake Tahoe and strengthen the partnership underlying the Lake Tahoe Environmental Improvement Program.
USGS booth at 2025 Tahoe Summit.
USGS booth at 2025 Tahoe Summit. Pictured from left, Sara Doyle (NV WSC), Zach Hood (NV WSC), David Smith (NV WSC), Ed Parvin (CAWSC) and Mark Dickman (CAWSC). Photograph by Ramon Naranjo (NV WSC) on 8/6/25.
USGS booth at 2025 Tahoe Summit. Pictured from left, Sara Doyle (NV WSC), Zach Hood (NV WSC), David Smith (NV WSC), Ed Parvin (CAWSC) and Mark Dickman (CAWSC). Photograph by Ramon Naranjo (NV WSC) on 8/6/25.
PIT tag reader being tested
This photo shows a passive integrated transponder (PIT) tag reader being used to test a tagged Santa Ana Sucker.
This photo shows a passive integrated transponder (PIT) tag reader being used to test a tagged Santa Ana Sucker.
Raceways at the RCD facility
The above photos show raceways at the Riverside Corona Resource Conservation District (RCD) facility.
The above photos show raceways at the Riverside Corona Resource Conservation District (RCD) facility.
Santa Ana Sucker research team
The photo shows members of the research team. From left to right: Tevin Bui (RCD), Jordan Buxton (USGS), Brett Mills (RCD), Alicia Ruan (RCD), and Brock Huntsman (USGS). Inset at right are Marissa Wulff (top) and Jeff Gronemyer (bottom), both of the USGS.
The photo shows members of the research team. From left to right: Tevin Bui (RCD), Jordan Buxton (USGS), Brett Mills (RCD), Alicia Ruan (RCD), and Brock Huntsman (USGS). Inset at right are Marissa Wulff (top) and Jeff Gronemyer (bottom), both of the USGS.
Poster Presenters at 2025 IEP Workshop
CAWSC poster presenters at 2025 IEP Workshop. Clockwise from upper left: Anna Conlen, Elise Shea, Lex Thomas, Zoё Siman-Tov, Bryan Gopez, Emma Walker, David Hart, Maura Uebner, Lawrence Fujiwara, Trevor Violette.
CAWSC poster presenters at 2025 IEP Workshop. Clockwise from upper left: Anna Conlen, Elise Shea, Lex Thomas, Zoё Siman-Tov, Bryan Gopez, Emma Walker, David Hart, Maura Uebner, Lawrence Fujiwara, Trevor Violette.
CAWSC Biogeochemistry group at 2025 IEP Workshop
CAWSC Biogeochemistry group at 2025 IEP Workshop. Left to Right: Back Row - Maura Uebner, Keith Bouma-Gregson, Kyle Leathers; Middle Row - Crystal Sturgeon, Zoё Siman-Tov, Lane Bratz, Emily Richardson, Tamara Kraus, Alex Ryan; Front Row - Nick Framsted
CAWSC Biogeochemistry group at 2025 IEP Workshop. Left to Right: Back Row - Maura Uebner, Keith Bouma-Gregson, Kyle Leathers; Middle Row - Crystal Sturgeon, Zoё Siman-Tov, Lane Bratz, Emily Richardson, Tamara Kraus, Alex Ryan; Front Row - Nick Framsted
Active (or moving) camera footage of Santa Ana Sucker
Active (or moving) camera footage of Santa Ana SuckerActive (or moving) camera footage of Santa Ana Sucker (Pantosteus santaanae). Cameras were attached to “selfie sticks” and walked up and down the raceways (or fabricated streams).
Active (or moving) camera footage of Santa Ana Sucker
Active (or moving) camera footage of Santa Ana SuckerActive (or moving) camera footage of Santa Ana Sucker (Pantosteus santaanae). Cameras were attached to “selfie sticks” and walked up and down the raceways (or fabricated streams).
Open-source image recognition footage of Santa Ana Sucker lure
Open-source image recognition footage of Santa Ana Sucker lureAn open-source image recognition program was used to detect the fish and lures in the videos. The program was “trained” to recognize the fish and lures by exposing it to approximately 800 images of fish and non-fish.
Open-source image recognition footage of Santa Ana Sucker lure
Open-source image recognition footage of Santa Ana Sucker lureAn open-source image recognition program was used to detect the fish and lures in the videos. The program was “trained” to recognize the fish and lures by exposing it to approximately 800 images of fish and non-fish.
Sample map - Legacy Mercury Contamination in California’s Sierra Nevada
Sample map - Legacy Mercury Contamination in California’s Sierra NevadaSample 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
Sample map - Legacy Mercury Contamination in California’s Sierra NevadaSample 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 is of the Malakoff Diggins hydraulic gold mineHistorical photo of the Malakoff Diggins hydraulic gold mine in the Sierra Nevada in California.
Historical photo is of the Malakoff Diggins hydraulic gold mine
Historical photo is of the Malakoff Diggins hydraulic gold mineHistorical photo of the Malakoff Diggins hydraulic gold mine in the Sierra Nevada in California.
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.
Photo of members of the team associated with USGS research done in collaboration with UC Davis.
Photo of members of the team associated with USGS research done in collaboration with UC Davis.The above photo includes members of the team associated with research done in collaboration with UC Davis. From left to right, Angela DePalma-Dow (Lake County, conference co-organizer), Sergio Valbuena (UC Davis), Charles Alpers (USGS), Alicia Cortes (UC Davis), and Samantha Sharp (UC Davis).
Photo of members of the team associated with USGS research done in collaboration with UC Davis.
Photo of members of the team associated with USGS research done in collaboration with UC Davis.The above photo includes members of the team associated with research done in collaboration with UC Davis. From left to right, Angela DePalma-Dow (Lake County, conference co-organizer), Sergio Valbuena (UC Davis), Charles Alpers (USGS), Alicia Cortes (UC Davis), and Samantha Sharp (UC Davis).
Attaching solar panel and antennae
USGS scientists attaching solar panel and antennae to soil moisture response unit.
USGS scientists attaching solar panel and antennae to soil moisture response unit.
Squirrel Creek Panorama
Panorama of area near Squirrel Creek soil moisture response unit installation in California's Feather River watershed.
Panorama of area near Squirrel Creek soil moisture response unit installation in California's Feather River watershed.
Digging pit for the soil moisture sensors
A team member helps dig the pit for the soil moisture sensors in the Plumas National Forest in California. Inset: close-up of soil removed from Squirrel Creek pit.
A team member helps dig the pit for the soil moisture sensors in the Plumas National Forest in California. Inset: close-up of soil removed from Squirrel Creek pit.
Soil moisture sensors positioned in pit.
Soil moisture sensors positioned in pit at different depths. Inset: close-up of sensor showing the two probes that gather the data.
Soil moisture sensors positioned in pit at different depths. Inset: close-up of sensor showing the two probes that gather the data.
Soil moisture monitoring station mast assembly
Shown clockwise from top left are: 1] setting up mast to support the station components, 2] installing data logging and transmitting equipment, 3] attaching solar panel and antennae, 4] finished assembly.
Shown clockwise from top left are: 1] setting up mast to support the station components, 2] installing data logging and transmitting equipment, 3] attaching solar panel and antennae, 4] finished assembly.
Soil monitoring station installation team. USGS and USDA.
Soil monitoring station installation team. USGS and USDA.Soil monitoring station installation team, with personnel from USGS and USDA, at Squirrel Creek installation site.
Soil monitoring station installation team. USGS and USDA.
Soil monitoring station installation team. USGS and USDA.Soil monitoring station installation team, with personnel from USGS and USDA, at Squirrel Creek installation site.
Scientist checks soil moisture data logging and transmission components
Scientist checks soil moisture data logging and transmission componentsUSGS Hydrologist Jim Howle checks data logging and transmission components using a laptop computer.
Scientist checks soil moisture data logging and transmission components
Scientist checks soil moisture data logging and transmission componentsUSGS Hydrologist Jim Howle checks data logging and transmission components using a laptop computer.