Narrated presentation that provides a unique synthesis of the story of nutrient water quality in the Susquehanna watershed.
John Clune, PhD
John Clune is a Research Hydrologist who has worked at the Pennsylvania Water Science Center since 2007.
My core research is focused on understanding
- the environmental drivers and responses of nutrients and sediment in streams with an emphasis on the effectiveness of conservation practices, and
- the geochemistry of groundwater focusing on the quality of drinking water for the protection of public health.
Science and Products
Filter Total Items: 15
Pennsylvania and the Chesapeake Bay Watershed
USGS provides monitoring, analysis, modeling and research on streams and water quality to better understand the fate and transport of nutrients and sediment to the Susquehanna and other rivers, and their tributaries, and eventually to the Chesapeake Bay. Additional research focuses on emerging contaminants and other stressors that effect human and aquatic life in the watershed and estuary.
Susquehanna River Story — What does the science say about water quality?
The wide and majestic Susquehanna River is one of the oldest rivers in the world and provides water for over 4 million people. Despite its beauty, the Susquehanna River and the Chesapeake Bay downstream has been facing the detrimental effects of excess nutrients (nitrogen and phosphorus).
Water Quality Monitoring to Inform Conservation Management, Fishing Creek, Clinton County, Pennsylvania
USGS conducted synoptic sampling of major-ion chemistry and the nitrogen and oxygen isotopic composition of nitrate in Fishing Creek during base flow to evaluate the occurrence and distribution of nutrients and to characterize biogeochemical processes.
Sediment and Stream Health - Pennsylvania
Sediment in streams, from land surface erosion in watersheds, is an important factor in determining the quality of Pennsylvania's surface waters and of downstream water bodies such as the Delaware Estuary and Chesapeake Bay. The USGS has a long-standing tradition of measuring suspended-sediment concentrations and estimating loads. Recent technological advances allow real-time estimates of...
Monitoring the Effectiveness of Conservation Practices in Small Agricultural Watersheds
Farmers are an important part of the economy and heritage of the Chesapeake Bay. Farmers also act as stewards of the land and water. Across the Chesapeake Bay Watershed, members of the agricultural community are volunteering to adopt conservation practices on their land. The goal of these practices is to protect the health of the soil, local streams and rivers, and the Chesapeake Bay. These...
Summarizing Science to Inform Management in the Chesapeake Bay Watershed
Stakeholders can use scientific insights to address their priority water-quality concerns. The USGS works with Chesapeake Bay stakeholders to identify and address priority questions that can help inform management decisions. These scientific insights can help guide nutrient and sediment management activities undertaken by Chesapeake Bay stakeholders. This webpage summarizes recent scientific...
Science to Inform Management Priorities from Loads to Endpoints (SIMPLE)
Resource managers are working to improve water-quality in the Chesapeake to benefit the people who live in the region and the birds, fish, and other animals who rely on clean water in the watershed and the Bay. The U.S Geological Survey (USGS) supports resource managers and other Chesapeake stakeholders by providing science that informs restoration and conservation in the Chesapeake region. The...
Sediment Response of Stream Restoration Practices, Turtle Creek, Union County, Pennsylvania
USGS is providing data and analyses to assess stream restoration effectiveness in Turtle Creek, Union County, Pennsylvania, by measuring differences in sediment erosion and deposition in restored and eroded stream reaches.
USGS Chesapeake Publication Receives National Award for Superior Communication Product
The Award USGS received a 2022 Blue Pencil & Gold Screen Award, in the category of Technical/Statistical Reports, from the National Association of Government Communications (NAGC) for the U.S. Geological Survey Circular titled Nitrogen in the Chesapeake Bay Watershed—A Century of Change, 1950–2050. Each year the NAGC recognizes products that provide excellence in government communications and the...
Tracking Status and Trends in Seven Key Indicators of River and Stream Condition in the Chesapeake Bay Watershed
Identifying and tracking the status of, and trends in, stream health within the Chesapeake Bay watershed is essential to understanding the past, present, and future trajectory of the watershed’s resources and ecological condition. A team of USGS ecosystem scientists is meeting this need with an initiative to track the status of, and trends in, key indicators of the health of non-tidal freshwater...
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...
Greatest Opportunities for Future Nitrogen Reductions to the Chesapeake Bay Watershed are in Developed and Agricultural Areas
Issue: As human population has increased, land-use changes have led to increases in nutrients (nitrogen and phosphorus) and sediment into the Bay. The excess nutrients cause algal blooms which contribute to water-quality impairments such as low oxygen or hypoxia (dead zones), and poor water clarity in the Chesapeake Bay. Management efforts to improve water quality focus on dissolved oxygen needed...
Susquehanna River Story — What does the science say about water quality?
Narrated presentation that provides a unique synthesis of the story of nutrient water quality in the Susquehanna watershed.
Hammer Creek
Hammer Creek is a creek in Lebanon County, Pennsylvania. Its 13 square mile watershed has a mixture of cropland and animal-raising activities.
Hammer Creek is a creek in Lebanon County, Pennsylvania. Its 13 square mile watershed has a mixture of cropland and animal-raising activities.
Hammer Creek
Hammer Creek is a creek in Lebanon County, Pennsylvania. Its 13 square mile watershed has a mixture of cropland and animal-raising activities.
Hammer Creek is a creek in Lebanon County, Pennsylvania. Its 13 square mile watershed has a mixture of cropland and animal-raising activities.
Little Conewago Creek
Little Conewago Creek is a creek in Lebanon County, Pennsylvania. Its 5 square mile watershed contains a mixture of animal and crop agricultural activities.
Little Conewago Creek is a creek in Lebanon County, Pennsylvania. Its 5 square mile watershed contains a mixture of animal and crop agricultural activities.
Nitrogen in the Chesapeake Bay Watershed: A Century of Change
Narrated presentation that provides a unique, long-term perspective (1950-2050) of the major drivers of nitrogen change up to the present, and forecasts how they may affect nitrogen into the future for the Chesapeake Bay watershed. Information is based off of U.S. Geological Survey Circular 1486.
Narrated presentation that provides a unique, long-term perspective (1950-2050) of the major drivers of nitrogen change up to the present, and forecasts how they may affect nitrogen into the future for the Chesapeake Bay watershed. Information is based off of U.S. Geological Survey Circular 1486.
Nitrogen in the Chesapeake Bay Watershed: A Century of Change (AD)
Narrated presentation that provides a unique, long-term perspective (1950-2050) of the major drivers of nitrogen change up to the present, and forecasts how they may affect nitrogen into the future for the Chesapeake Bay watershed. Information is based off of U.S. Geological Survey Circular 1486.
Narrated presentation that provides a unique, long-term perspective (1950-2050) of the major drivers of nitrogen change up to the present, and forecasts how they may affect nitrogen into the future for the Chesapeake Bay watershed. Information is based off of U.S. Geological Survey Circular 1486.
Hydrologist Hilary Dozier measuring flow in Fishing Creek, PA
USGS Hydrologist Hilary Dozier (formerly Abraham) measuring stream discharge during sampling, to allow calculation of loads, in Fishing Creek, Logan Township, Clinton County, Pennsylvania, just below the Logan Mills Covered Bridge (John Clune, USGS).
USGS Hydrologist Hilary Dozier (formerly Abraham) measuring stream discharge during sampling, to allow calculation of loads, in Fishing Creek, Logan Township, Clinton County, Pennsylvania, just below the Logan Mills Covered Bridge (John Clune, USGS).
Science and Products
Filter Total Items: 15
Pennsylvania and the Chesapeake Bay Watershed
USGS provides monitoring, analysis, modeling and research on streams and water quality to better understand the fate and transport of nutrients and sediment to the Susquehanna and other rivers, and their tributaries, and eventually to the Chesapeake Bay. Additional research focuses on emerging contaminants and other stressors that effect human and aquatic life in the watershed and estuary.
Susquehanna River Story — What does the science say about water quality?
The wide and majestic Susquehanna River is one of the oldest rivers in the world and provides water for over 4 million people. Despite its beauty, the Susquehanna River and the Chesapeake Bay downstream has been facing the detrimental effects of excess nutrients (nitrogen and phosphorus).
Water Quality Monitoring to Inform Conservation Management, Fishing Creek, Clinton County, Pennsylvania
USGS conducted synoptic sampling of major-ion chemistry and the nitrogen and oxygen isotopic composition of nitrate in Fishing Creek during base flow to evaluate the occurrence and distribution of nutrients and to characterize biogeochemical processes.
Sediment and Stream Health - Pennsylvania
Sediment in streams, from land surface erosion in watersheds, is an important factor in determining the quality of Pennsylvania's surface waters and of downstream water bodies such as the Delaware Estuary and Chesapeake Bay. The USGS has a long-standing tradition of measuring suspended-sediment concentrations and estimating loads. Recent technological advances allow real-time estimates of...
Monitoring the Effectiveness of Conservation Practices in Small Agricultural Watersheds
Farmers are an important part of the economy and heritage of the Chesapeake Bay. Farmers also act as stewards of the land and water. Across the Chesapeake Bay Watershed, members of the agricultural community are volunteering to adopt conservation practices on their land. The goal of these practices is to protect the health of the soil, local streams and rivers, and the Chesapeake Bay. These...
Summarizing Science to Inform Management in the Chesapeake Bay Watershed
Stakeholders can use scientific insights to address their priority water-quality concerns. The USGS works with Chesapeake Bay stakeholders to identify and address priority questions that can help inform management decisions. These scientific insights can help guide nutrient and sediment management activities undertaken by Chesapeake Bay stakeholders. This webpage summarizes recent scientific...
Science to Inform Management Priorities from Loads to Endpoints (SIMPLE)
Resource managers are working to improve water-quality in the Chesapeake to benefit the people who live in the region and the birds, fish, and other animals who rely on clean water in the watershed and the Bay. The U.S Geological Survey (USGS) supports resource managers and other Chesapeake stakeholders by providing science that informs restoration and conservation in the Chesapeake region. The...
Sediment Response of Stream Restoration Practices, Turtle Creek, Union County, Pennsylvania
USGS is providing data and analyses to assess stream restoration effectiveness in Turtle Creek, Union County, Pennsylvania, by measuring differences in sediment erosion and deposition in restored and eroded stream reaches.
USGS Chesapeake Publication Receives National Award for Superior Communication Product
The Award USGS received a 2022 Blue Pencil & Gold Screen Award, in the category of Technical/Statistical Reports, from the National Association of Government Communications (NAGC) for the U.S. Geological Survey Circular titled Nitrogen in the Chesapeake Bay Watershed—A Century of Change, 1950–2050. Each year the NAGC recognizes products that provide excellence in government communications and the...
Tracking Status and Trends in Seven Key Indicators of River and Stream Condition in the Chesapeake Bay Watershed
Identifying and tracking the status of, and trends in, stream health within the Chesapeake Bay watershed is essential to understanding the past, present, and future trajectory of the watershed’s resources and ecological condition. A team of USGS ecosystem scientists is meeting this need with an initiative to track the status of, and trends in, key indicators of the health of non-tidal freshwater...
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...
Greatest Opportunities for Future Nitrogen Reductions to the Chesapeake Bay Watershed are in Developed and Agricultural Areas
Issue: As human population has increased, land-use changes have led to increases in nutrients (nitrogen and phosphorus) and sediment into the Bay. The excess nutrients cause algal blooms which contribute to water-quality impairments such as low oxygen or hypoxia (dead zones), and poor water clarity in the Chesapeake Bay. Management efforts to improve water quality focus on dissolved oxygen needed...
Susquehanna River Story — What does the science say about water quality?
Narrated presentation that provides a unique synthesis of the story of nutrient water quality in the Susquehanna watershed.
Narrated presentation that provides a unique synthesis of the story of nutrient water quality in the Susquehanna watershed.
Hammer Creek
Hammer Creek is a creek in Lebanon County, Pennsylvania. Its 13 square mile watershed has a mixture of cropland and animal-raising activities.
Hammer Creek is a creek in Lebanon County, Pennsylvania. Its 13 square mile watershed has a mixture of cropland and animal-raising activities.
Hammer Creek
Hammer Creek is a creek in Lebanon County, Pennsylvania. Its 13 square mile watershed has a mixture of cropland and animal-raising activities.
Hammer Creek is a creek in Lebanon County, Pennsylvania. Its 13 square mile watershed has a mixture of cropland and animal-raising activities.
Little Conewago Creek
Little Conewago Creek is a creek in Lebanon County, Pennsylvania. Its 5 square mile watershed contains a mixture of animal and crop agricultural activities.
Little Conewago Creek is a creek in Lebanon County, Pennsylvania. Its 5 square mile watershed contains a mixture of animal and crop agricultural activities.
Nitrogen in the Chesapeake Bay Watershed: A Century of Change
Narrated presentation that provides a unique, long-term perspective (1950-2050) of the major drivers of nitrogen change up to the present, and forecasts how they may affect nitrogen into the future for the Chesapeake Bay watershed. Information is based off of U.S. Geological Survey Circular 1486.
Narrated presentation that provides a unique, long-term perspective (1950-2050) of the major drivers of nitrogen change up to the present, and forecasts how they may affect nitrogen into the future for the Chesapeake Bay watershed. Information is based off of U.S. Geological Survey Circular 1486.
Nitrogen in the Chesapeake Bay Watershed: A Century of Change (AD)
Narrated presentation that provides a unique, long-term perspective (1950-2050) of the major drivers of nitrogen change up to the present, and forecasts how they may affect nitrogen into the future for the Chesapeake Bay watershed. Information is based off of U.S. Geological Survey Circular 1486.
Narrated presentation that provides a unique, long-term perspective (1950-2050) of the major drivers of nitrogen change up to the present, and forecasts how they may affect nitrogen into the future for the Chesapeake Bay watershed. Information is based off of U.S. Geological Survey Circular 1486.
Hydrologist Hilary Dozier measuring flow in Fishing Creek, PA
USGS Hydrologist Hilary Dozier (formerly Abraham) measuring stream discharge during sampling, to allow calculation of loads, in Fishing Creek, Logan Township, Clinton County, Pennsylvania, just below the Logan Mills Covered Bridge (John Clune, USGS).
USGS Hydrologist Hilary Dozier (formerly Abraham) measuring stream discharge during sampling, to allow calculation of loads, in Fishing Creek, Logan Township, Clinton County, Pennsylvania, just below the Logan Mills Covered Bridge (John Clune, USGS).