Postdoctoral Research Opportunity: Characterizing low-order aquatic systems and flow permanence at the watershed scale

Postdoctoral Research Opportunity: Characterizing low-order aquatic systems and flow permanence at the watershed scale

We are excited to share a postdoctoral research opportunity to improve the characterization and mapping of wetlands and small streams. This competitive postdoctoral opportunity is with Oak Ridge Institute for Science and Education and is located at US Environmental Protection Agency’s Office of Research and Development in Cincinnati, Ohio. Application period ends at 3:00 PM ET on September 24th, 2019. Please share with those who may be interested.


Oak Ridge Institute for Science and Education (ORISE) in association with EPA’s Office of Research and Development (ORD) announces a postdoctoral research opportunity collaborating with a team of EPA/ORD research scientists to improve the characterization and mapping of aquatic systems and quantify their spatial and temporal extent across the landscape.

Aquatic resources such as streams and riparian wetlands play an integral part in maintaining clean and plentiful water for aquatic ecosystems and human beneficial uses. Yet, the spatial extent and flow-characteristics of such systems are difficult to map accurately given their spatial and temporal variability and the limitations of past remote sensing and other geospatial approaches. Recent advancements in remote sensors, modeling techniques, data processing capacities and statistical approaches may allow for bridging past technological barriers to improve aquatic resource mapping. The improved mapping of aquatic resources and variability assessment assists both underlying scientific understanding of hydrology as well as informing aquatic resource management at local, state, and regional scales.

The focus of this research will be to combine fine-scale remotely sensed data with additional geospatial data, GIS analysis, and novel statistical approaches to improve the mapping of aquatic resources. A primary goal is improved lateral and longitudinal mapping of low-order stream systems and associated riparian wetlands. The research will also include advanced characterization of flow permanence of stream network components. The work will initially concentrate on selected watersheds within the conterminous United States where field validation data are available.

The preferred candidate will have a Ph.D. and experience in remote sensing, hydrology, environmental science, ecology, geography, environmental engineering, statistics/geostatistics, geographic information science, or a related discipline. S/he will have experience in (1) GIS/remote-sensing software and applications; (2) watershed hydrology; (3) advanced statistical methods for watershed, landscape-scale, and/or surface water analyses; and (4) scripting (e.g., Python, R, SAS) languages. The candidate is expected to join our productive and driven research team of watershed hydrologists, biogeochemists, and systems ecologists this fall for a one-year postdoctoral research appointment. With sufficient advancement and contingent on Congressional funding the position is expected to be extended for up to a total of three years.

For application and position information: For visa-related information, please see:

Feel free to reach out with any questions: Dr. Jay Christensen (, Dr. Charles Lane (, and/or Dr. Heather Golden (