Fragilaria crotonensis is a well-known species of planktonic diatom within the genus Fragilaria, commonly found in freshwater lakes across North America and other temperate regions.
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Multimedia products are an important way to distribute information to the public. The Oregon Water Science center continues to produce a variety of outreach materials including audio broadcasts, video podcasts, and online videos. Search below to see what we have been up to.
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Fragilaria crotonensis is a well-known species of planktonic diatom within the genus Fragilaria, commonly found in freshwater lakes across North America and other temperate regions.

Two technicians deployed the water-quality monitor for the 2025 season on the dock at OMSI. See the data live: Willamette River Below the Holgate Channel, Portland, OR
Two technicians deployed the water-quality monitor for the 2025 season on the dock at OMSI. See the data live: Willamette River Below the Holgate Channel, Portland, OR
USGS staff member collects sediment samples at the upstream Chicken Creek water-quality monitoring location in the Tualatin River National Wildlife Refuge.
USGS staff member collects sediment samples at the upstream Chicken Creek water-quality monitoring location in the Tualatin River National Wildlife Refuge.
Chicken Creek in the Tualatin River National Wildlife Refuge. The Refuge has over 200 species of birds and a variety of other wildlife.
Chicken Creek in the Tualatin River National Wildlife Refuge. The Refuge has over 200 species of birds and a variety of other wildlife.
USGS hydrologist, Erin Leahy, collects sediment samples at the upstream gage on Chicken Creek in the Tualatin River National Wildlife Refuge.
USGS hydrologist, Erin Leahy, collects sediment samples at the upstream gage on Chicken Creek in the Tualatin River National Wildlife Refuge.
USGS hydrologic technician, Heather Bragg, uses a 2-wheel crane to lower a sediment sampler into Chicken Creek below.
USGS hydrologic technician, Heather Bragg, uses a 2-wheel crane to lower a sediment sampler into Chicken Creek below.
Videos

This video presents the Spring 2025 Saline Lake Ecosystems Integrated Water Availability Assessment Spring Seminar by the U.S. Geological Survey (USGS). Hosted by Allison Shipp, the seminar provides updates on how hydroclimatic changes and water management affect terminal lake ecosystems and waterbird populations.
This video presents the Spring 2025 Saline Lake Ecosystems Integrated Water Availability Assessment Spring Seminar by the U.S. Geological Survey (USGS). Hosted by Allison Shipp, the seminar provides updates on how hydroclimatic changes and water management affect terminal lake ecosystems and waterbird populations.

Saline Lakes IWAA Fall 2024 Webinar Series: Satellite Observations of Lake Surface Water Dynamics
linkThe sixth and final webinar in the Saline Lakes Ecosystems IWAA Fall 2024 Webinar Series is on satellite observations of lake surface water dynamics. John W. Jones of the USGS Hydrologic Remote Sensing Branch introduces the surface water and wetland remote sensing component of the Integrated Water Availability Assessment.
Saline Lakes IWAA Fall 2024 Webinar Series: Satellite Observations of Lake Surface Water Dynamics
linkThe sixth and final webinar in the Saline Lakes Ecosystems IWAA Fall 2024 Webinar Series is on satellite observations of lake surface water dynamics. John W. Jones of the USGS Hydrologic Remote Sensing Branch introduces the surface water and wetland remote sensing component of the Integrated Water Availability Assessment.

The fifth webinar in the Saline Lakes Ecosystems IWAA Fall 2024 Webinar Series is on waterbird prey availability in Great Basin terminal lakes.
The fifth webinar in the Saline Lakes Ecosystems IWAA Fall 2024 Webinar Series is on waterbird prey availability in Great Basin terminal lakes.

The fourth webinar in the Saline Lakes Ecosystems IWAA Fall 2024 Webinar Series is on movement of bird species associated with Great Basin terminal lake ecosystems. Cory Overton of the Western Ecological Research Center gives an overview of the USGS bird movement monitoring strategy and presents results from the 2024 field season.
The fourth webinar in the Saline Lakes Ecosystems IWAA Fall 2024 Webinar Series is on movement of bird species associated with Great Basin terminal lake ecosystems. Cory Overton of the Western Ecological Research Center gives an overview of the USGS bird movement monitoring strategy and presents results from the 2024 field season.

Saline Lakes Ecosystems IWAA Fall 2024 Webinar Series: Water-Quality Monitoring of Great Basin Terminal Lake Ecosystems
linkThe third webinar in the Saline Lakes Ecosystems IWAA Fall 2024 Webinar Series is on water-quality monitoring of Great Basin terminal lake ecosystems. Christine Rumsey of the Utah Water Science Center and Casie Smith of the Oregon Water Science Center give an overview of the USGS water-quality monitoring strategy and present results from the 2024 field season.
Saline Lakes Ecosystems IWAA Fall 2024 Webinar Series: Water-Quality Monitoring of Great Basin Terminal Lake Ecosystems
linkThe third webinar in the Saline Lakes Ecosystems IWAA Fall 2024 Webinar Series is on water-quality monitoring of Great Basin terminal lake ecosystems. Christine Rumsey of the Utah Water Science Center and Casie Smith of the Oregon Water Science Center give an overview of the USGS water-quality monitoring strategy and present results from the 2024 field season.

Saline Lake Ecosystems IWAA Fall 2024 Webinar Series: Physical and Chemical Monitoring in Support of Water Budgets of Select Great Basin Saline Lakes
linkThe second webinar in the Saline Lake Ecosystems IWAA Fall 2024 Webinar Series is on physical and chemical monitoring in support of water budgets of select Great Basin saline lakes.
Saline Lake Ecosystems IWAA Fall 2024 Webinar Series: Physical and Chemical Monitoring in Support of Water Budgets of Select Great Basin Saline Lakes
linkThe second webinar in the Saline Lake Ecosystems IWAA Fall 2024 Webinar Series is on physical and chemical monitoring in support of water budgets of select Great Basin saline lakes.
Audio
In this episode we explore how vital groundwater is as a natural resource and discuss what impact a changing climate and human consumption has on groundwater supplies. Join us, as we sit down with USGS Groundwater Specialist Marshall Gannett to get a primer on the role groundwater plays in our daily lives, today on the Oregon Science Podcast.
In this episode we explore how vital groundwater is as a natural resource and discuss what impact a changing climate and human consumption has on groundwater supplies. Join us, as we sit down with USGS Groundwater Specialist Marshall Gannett to get a primer on the role groundwater plays in our daily lives, today on the Oregon Science Podcast.
In this episode we sit down with USGS wildlife biologist Joan Hagar and discuss her recent study on songbirds in the Pacific Northwest. New research indicates a possible relationship between reductions in the abundance of some species of songbird and reductions in the amount of deciduous trees in evergreen forests.
In this episode we sit down with USGS wildlife biologist Joan Hagar and discuss her recent study on songbirds in the Pacific Northwest. New research indicates a possible relationship between reductions in the abundance of some species of songbird and reductions in the amount of deciduous trees in evergreen forests.
For this month’s episode we discuss the water-quality parameter turbidity. More than just a way to measure dirty water, turbidity can serve as a useful indicator of the ecological health of a watershed.
For this month’s episode we discuss the water-quality parameter turbidity. More than just a way to measure dirty water, turbidity can serve as a useful indicator of the ecological health of a watershed.
In this month’s episode we discuss how 3-D modeling is used to examine groundwater in the Columbia Plateau. USGS hydrologist Erick Burns describes how his team modeled the 53,000 mi2 plateau, how this information is currently used, and what implications it has for the future.
In this month’s episode we discuss how 3-D modeling is used to examine groundwater in the Columbia Plateau. USGS hydrologist Erick Burns describes how his team modeled the 53,000 mi2 plateau, how this information is currently used, and what implications it has for the future.
This month's episode focuses on one of the most useful geographic tools scientists have for studying our natural world: Light Detection and Ranging, or LiDAR. LiDAR is a powerful data collection technique that can be used to map surface features, even those hidden beneath the dense canopy of Pacific Northwest forests.
This month's episode focuses on one of the most useful geographic tools scientists have for studying our natural world: Light Detection and Ranging, or LiDAR. LiDAR is a powerful data collection technique that can be used to map surface features, even those hidden beneath the dense canopy of Pacific Northwest forests.
There is a black box hidden beneath the forests of the Pacific Northwest, guarding the secrets to why the trees grow so large! The black box is soil, which harbors immense biological diversity and controls the release of water and nutrients that support the life above ground.
There is a black box hidden beneath the forests of the Pacific Northwest, guarding the secrets to why the trees grow so large! The black box is soil, which harbors immense biological diversity and controls the release of water and nutrients that support the life above ground.