Gregory Daniel Clark
Greg is a project chief in the groundwater and water quality section at the Wyoming-Montana Water Science Center.
Greg’s training is in hydrologic response to landscape disturbance and his work typically focuses on the linkages between water chemistry and watershed characteristics. He works with local, state, and federal partners to develop a scientific understanding of watershed response to significant landscape disturbances that can be used in future decision making. This work primarily centers on, but is not limited to, water quality response to wildfire, mining, and logging. Greg has a particular interest in using continuous water quality sensing to characterize event-based response in these landscapes.
Professional Experience
2019 - present Hydrologist [Project Chief], U.S. Geological Survey Wyoming-Montana Water Science Center.
2018 - 2019 Terrestrial Field Ecologist, NSF-Batelle, National Ecological Observatory Network, Front Royal, Virginia.
Education and Certifications
M.S. Environmental Science (Soils), Washington State University, 2018.
B.S. Environmental Resource Management (Water Science), Pennsylvania State University, 2016.
Science and Products
Wildfires and Water Quality in Montana
Long-Term Surface-Water Monitoring in the Upper Clark Fork River Basin
Hysteretic response of suspended-sediment in wildfire affected watersheds of the Pacific Northwest and Southern Rocky Mountains
An intercomparison of DOC estimated from fDOM sensors in wildfire affected streams of the western United States
A call for strategic water-quality monitoring to advance assessment and prediction of wildfire impacts on water supplies
Water-quality, bed-sediment, and invertebrate tissue trace-element concentrations for tributaries in the Clark Fork Basin, Montana, October 2019–September 2020
Sediment transport in the Yankee Fork of the Salmon River near Stanley, Idaho, water years 2012–19
Water-quality, bed-sediment, and invertebrate tissue trace-element concentrations for tributaries in the Clark Fork Basin, Montana, October 2018–September 2019
Seasonal dynamics and interannual variability in mercury concentrations and loads through a three-reservoir complex
Water-quality, bed-sediment, and invertebrate tissue trace-element concentrations for tributaries in the Clark Fork Basin, Montana, October 2017–September 2018
Mercury cycling in the Hells Canyon Complex of the Snake River, Idaho and Oregon
Sources, transport, and trends for selected trace metals and nutrients in the Coeur d'Alene and Spokane River Basins, Idaho, 1990-2013
Sediment transport in the lower Snake and Clearwater River Basins, Idaho and Washington, 2008–11
The quality of our nation's waters: Nutrients in the nation's streams and groundwater, 1992-2004
Non-USGS Publications**
**Disclaimer: The views expressed in Non-USGS publications are those of the author and do not represent the views of the USGS, Department of the Interior, or the U.S. Government.
Science and Products
Wildfires and Water Quality in Montana
Long-Term Surface-Water Monitoring in the Upper Clark Fork River Basin
Hysteretic response of suspended-sediment in wildfire affected watersheds of the Pacific Northwest and Southern Rocky Mountains
An intercomparison of DOC estimated from fDOM sensors in wildfire affected streams of the western United States
A call for strategic water-quality monitoring to advance assessment and prediction of wildfire impacts on water supplies
Water-quality, bed-sediment, and invertebrate tissue trace-element concentrations for tributaries in the Clark Fork Basin, Montana, October 2019–September 2020
Sediment transport in the Yankee Fork of the Salmon River near Stanley, Idaho, water years 2012–19
Water-quality, bed-sediment, and invertebrate tissue trace-element concentrations for tributaries in the Clark Fork Basin, Montana, October 2018–September 2019
Seasonal dynamics and interannual variability in mercury concentrations and loads through a three-reservoir complex
Water-quality, bed-sediment, and invertebrate tissue trace-element concentrations for tributaries in the Clark Fork Basin, Montana, October 2017–September 2018
Mercury cycling in the Hells Canyon Complex of the Snake River, Idaho and Oregon
Sources, transport, and trends for selected trace metals and nutrients in the Coeur d'Alene and Spokane River Basins, Idaho, 1990-2013
Sediment transport in the lower Snake and Clearwater River Basins, Idaho and Washington, 2008–11
The quality of our nation's waters: Nutrients in the nation's streams and groundwater, 1992-2004
Non-USGS Publications**
**Disclaimer: The views expressed in Non-USGS publications are those of the author and do not represent the views of the USGS, Department of the Interior, or the U.S. Government.