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Streams and Environmental Change

Climate change and variability, along with adjacent land use, can affect stream conditions and health. The USGS is providing science on changes in stream flows and temperatures on habitats important for fisheries. The findings will help address the Chesapeake Bay Program (CBP) Goals for fisheries, habitat, and water quality.

Filter Total Items: 27

USGS Chesapeake Accomplishments and Highlights for 2024

As a home to 18 million people and a destination for countless visitors seeking recreational opportunities, the health of the Chesapeake Bay watershed is of critical importance. The U.S. Geological Survey (USGS) is a leading provider of data-driven insights about the condition of the watershed’s lands, waters, fish, and wildlife. These insights and our collaborative work with partners throughout...
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USGS Chesapeake Accomplishments and Highlights for 2024

As a home to 18 million people and a destination for countless visitors seeking recreational opportunities, the health of the Chesapeake Bay watershed is of critical importance. The U.S. Geological Survey (USGS) is a leading provider of data-driven insights about the condition of the watershed’s lands, waters, fish, and wildlife. These insights and our collaborative work with partners throughout...
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Road salt elevates salinity above background levels in freshwater streams and rivers across the Chesapeake Bay Watershed

The findings of this study show that salinity is elevated above background levels throughout most freshwater streams within the Chesapeake Bay watershed. This information can help prioritize salt management strategies for local streams and rivers.
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Road salt elevates salinity above background levels in freshwater streams and rivers across the Chesapeake Bay Watershed

The findings of this study show that salinity is elevated above background levels throughout most freshwater streams within the Chesapeake Bay watershed. This information can help prioritize salt management strategies for local streams and rivers.
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New study highlights the role of wastewater and landscape sources contributing to pesticide contamination in the Potomac River watershed

Wastewater treatment plant discharges can be a source of organic contaminants, including pesticides, to rivers. Pesticide concentrations were predicted based on wastewater percentages in stream water using a modeling tool, and verified with measured concentrations to identify other potential landscape sources.
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New study highlights the role of wastewater and landscape sources contributing to pesticide contamination in the Potomac River watershed

Wastewater treatment plant discharges can be a source of organic contaminants, including pesticides, to rivers. Pesticide concentrations were predicted based on wastewater percentages in stream water using a modeling tool, and verified with measured concentrations to identify other potential landscape sources.
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Susquehanna River and Basin

In Pennsylvania, the USGS's water-resources roots date back to the late 1800's, with the initiation of streamflow gaging on the Susquehanna and Delaware Rivers and assessments of groundwater resources near Philadelphia. The USGS Pennsylvania Water Science Center continues to provide scientific information about the water resources of the Susquehanna River Basin, in cooperation with regional and...
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Susquehanna River and Basin

In Pennsylvania, the USGS's water-resources roots date back to the late 1800's, with the initiation of streamflow gaging on the Susquehanna and Delaware Rivers and assessments of groundwater resources near Philadelphia. The USGS Pennsylvania Water Science Center continues to provide scientific information about the water resources of the Susquehanna River Basin, in cooperation with regional and...
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Using Multiple Indicators to Assess Stream Condition in the Chesapeake Bay

USGS is working with federal, state and local partners to develop multiple assessments of stream and river conditions in non-tidal areas of the Chesapeake Bay watershed. These assessments will help managers preserve stream health and improve biological conditions in impaired streams as the human population and climate continue to change in this region.
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Using Multiple Indicators to Assess Stream Condition in the Chesapeake Bay

USGS is working with federal, state and local partners to develop multiple assessments of stream and river conditions in non-tidal areas of the Chesapeake Bay watershed. These assessments will help managers preserve stream health and improve biological conditions in impaired streams as the human population and climate continue to change in this region.
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New studies reveal ecological importance of fine-scale groundwater connectivity for streams during drought

Stream ecosystems support vital resources that may be jeopardized by climate change and climate stressors such as drought.
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New studies reveal ecological importance of fine-scale groundwater connectivity for streams during drought

Stream ecosystems support vital resources that may be jeopardized by climate change and climate stressors such as drought.
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Agricultural and Urban Management Practices have Hidden Costs and Benefits to Stream Health

The findings of the study highlight that management practices can have both hidden costs and benefits to fish and macroinvertebrates depending on regional and local factors like how many and what type of management practices are implemented.
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Agricultural and Urban Management Practices have Hidden Costs and Benefits to Stream Health

The findings of the study highlight that management practices can have both hidden costs and benefits to fish and macroinvertebrates depending on regional and local factors like how many and what type of management practices are implemented.
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New study highlights impact of current and historic land use on stream incision in Maryland Piedmont headwaters

A new method was developed to remotely identify small, eroding streams and measure change over time.
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USGS Chesapeake Publication Receives National Award for Outstanding Technology Paper

The paper, Ephemeral Stream Network Extraction from Lidar-Derived Elevation and Topographic Attributes in Urban and Forested Landscapes, describes a new method of remotely mapping ephemeral headwater streams using wetness index and topographic openness derived from lidar. This work is part of a long-term USGS study assessing the impacts of suburban development on a range of ecosystem functions...
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USGS Chesapeake Publication Receives National Award for Outstanding Technology Paper

The paper, Ephemeral Stream Network Extraction from Lidar-Derived Elevation and Topographic Attributes in Urban and Forested Landscapes, describes a new method of remotely mapping ephemeral headwater streams using wetness index and topographic openness derived from lidar. This work is part of a long-term USGS study assessing the impacts of suburban development on a range of ecosystem functions...
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Communicating stream fish vulnerability to climate change

We will develop a vulnerability assessment R Shiny web application and present to stakeholders. The stakeholder feedback will be summarized into a one page ‘lessons learned’ document that will assist researchers in designing effective climate change visualizations and an R markdown ‘quick start’ guide on R Shiny applications.
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Communicating stream fish vulnerability to climate change

We will develop a vulnerability assessment R Shiny web application and present to stakeholders. The stakeholder feedback will be summarized into a one page ‘lessons learned’ document that will assist researchers in designing effective climate change visualizations and an R markdown ‘quick start’ guide on R Shiny applications.
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Study reveals importance of groundwater for stability of freshwater fish populations and resilience to climate change

Issue: Climate change is warming streams and rivers of the Chesapeake Bay watershed, and this is a critical concern for fisheries management and conservation. To address this issue, the Chesapeake Bay Program (CBP) recently identified four actions: • address the threats of climate change in all aspects of the partnership’s work; • prioritize communities, working lands, and most vulnerable habitats...
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Study reveals importance of groundwater for stability of freshwater fish populations and resilience to climate change

Issue: Climate change is warming streams and rivers of the Chesapeake Bay watershed, and this is a critical concern for fisheries management and conservation. To address this issue, the Chesapeake Bay Program (CBP) recently identified four actions: • address the threats of climate change in all aspects of the partnership’s work; • prioritize communities, working lands, and most vulnerable habitats...
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Enhanced understanding of factors affecting stream condition can improve restoration outcomes

Issue: The Chesapeake Bay Watershed Agreement has an outcome to improve stream health. Current restoration approaches have led to mixed improvements in stream conditions, indicating that some major stressors and their sources were likely overlooked. Managers could benefit from synthesized information on most reported stressors responsible for aquatic community impairment and their linkages to...
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Enhanced understanding of factors affecting stream condition can improve restoration outcomes

Issue: The Chesapeake Bay Watershed Agreement has an outcome to improve stream health. Current restoration approaches have led to mixed improvements in stream conditions, indicating that some major stressors and their sources were likely overlooked. Managers could benefit from synthesized information on most reported stressors responsible for aquatic community impairment and their linkages to...
Learn More
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