Jeff Frey
Jeff's research focuses on the transport of and biological response to nutrients, primarily in the Midwest. Recently the focus has been on edge-of-field studies and Supergages to better understand transport of nutrients. A focus recently has been building water quality and streamgage networks through collaborations with key groups like the Indiana Water Monitoring Council, Indiana Silver Jackets,
He began working with the USGS after graduate school in Indiana 1992 with the National Water-Quality Assessment (NAWQA) Program and has held several positions since then including overseeing the White River - Miami River NAWQA study unit and coordinating the Midwest Stream Quality Assessment in collaboration with the USEPA and NAWQA in 2013. Currently, he is the Director of the USGS Indiana-Kentucky Water Science Center in Indianapolis.
Science and Products
Environmental Effects of Agricultural Practices
As agricultural land in the Minnesota River Basin is retired, tile drains are removed or broken and riparian corridors are planted to reduce runoff. Early studies saw decreased sediment and nitrogen and improved biological indicators but no significant changes in phosphorus. This project continues to investigate the linkages between riparian buffer extent, age, and continuity; stream water; and...
Ohio-Kentucky-Indiana Collaboration Partners
One of the strongest ways to ensure that science is done effectively and efficiently in the midst of ever decreasing budgets is to collaborate.
Ecological Monitoring
Scientists research biology, botany, microbiology, habitat, climate, water quality, and other fields to achieve a comprehensive view of ecosystems and their health. Ecosystems can be easily stressed by human activities, climate change, sediment, nutrients, contaminants, and many other variables. Ecosystem monitoring is critical to ecosystem health and answers important questions about the...
Biological Response to Nutrients
Eutrophication, or excess nutrients in streams, is typically one of the top reasons that a stream is listed as impaired on the 303(d) list as part of the Clean Water Act.
Transport and Fate of Nutrients
Eutrophication, or excess nutrients in streams, is typically one of the top reasons that a stream is listed as impaired on the 303(d) list as part of the Clean Water Act. How nutrients, primarily nitrogen and phosphorus, are transported to streams and groundwater greatly affects the best management plan to keep them on fields and out of streams and groundwater. Likewise, environmental managers and...
Science and Products
- Publications
- Science
Environmental Effects of Agricultural Practices
As agricultural land in the Minnesota River Basin is retired, tile drains are removed or broken and riparian corridors are planted to reduce runoff. Early studies saw decreased sediment and nitrogen and improved biological indicators but no significant changes in phosphorus. This project continues to investigate the linkages between riparian buffer extent, age, and continuity; stream water; and...Ohio-Kentucky-Indiana Collaboration Partners
One of the strongest ways to ensure that science is done effectively and efficiently in the midst of ever decreasing budgets is to collaborate.Ecological Monitoring
Scientists research biology, botany, microbiology, habitat, climate, water quality, and other fields to achieve a comprehensive view of ecosystems and their health. Ecosystems can be easily stressed by human activities, climate change, sediment, nutrients, contaminants, and many other variables. Ecosystem monitoring is critical to ecosystem health and answers important questions about the...Biological Response to Nutrients
Eutrophication, or excess nutrients in streams, is typically one of the top reasons that a stream is listed as impaired on the 303(d) list as part of the Clean Water Act.Transport and Fate of Nutrients
Eutrophication, or excess nutrients in streams, is typically one of the top reasons that a stream is listed as impaired on the 303(d) list as part of the Clean Water Act. How nutrients, primarily nitrogen and phosphorus, are transported to streams and groundwater greatly affects the best management plan to keep them on fields and out of streams and groundwater. Likewise, environmental managers and... - Data
- News