Jonathan Friedman, PhD
Jonathan Friedman is a Hydrologist at the Fort Collins Science Center.
Since joining the Fort Collins Science Center in 1993, Jonathan has devoted his career to studying interactions among riparian vegetation, river flow and channel change. Present research topics include use of riparian tree rings to reconstruct past river flow, quantification of federal reserved water rights, and determination of the effect of riparian vegetation on bank stability.
Professional Experience
1993-present, Research Hydrologist, USGS Fort Collins Science Center, Fort Collins, CO
1990-1993, Hydrologist, USGS Water Resources Division, Lakewood, CO
1988-1990, Community College Instructor, Bellevue Community College, Olympic College and Front Range Community College, Washington and Colorado.
1988 Assistant Natural Area Scientist, Washington Natural Heritage Program, Olympia, Washington
Education and Certifications
Ph.D. Environmental, Population and Organismic Biology, University of Colorado, Boulder, 1993
M.S. Oceanography and Limnology, University of Wisconsin, Madison, 1987
B.S. Biology, Massachusetts Institute of Technology, 1983
Affiliations and Memberships*
Ecological Society of America
American Geophysical Union
Science and Products
The effects of requested flows for native fish on sediment dynamics, geomorphology, and riparian vegetation for the Green River in Canyonlands National Park, Utah
Historical and paleoflood analyses for probabilistic flood-hazard assessments—Approaches and review guidelines
Sediment-ecological connectivity in a large river network
Cottonwoods, water, and people-Integrating analysis of tree rings with observations of elders from the Eastern Shoshone and Northern Arapaho Tribes of the Wind River Reservation, Wyoming
Increased drought severity tracks warming in the United States’ largest river basin
Short- and long-term responses of riparian cottonwoods (Populus spp.) to flow diversion: Analysis of tree-ring radial growth and stable carbon isotopes
Effects of flow diversion on Snake Creek and its riparian cottonwood forest, Great Basin National Park
1200 years of Upper Missouri River streamflow reconstructed from tree rings
Age and growth of cottonwood trees along the Missouri River, North Dakota
Effects of age and environment on stable carbon isotope ratios in tree rings of riparian Populus
An old tree and its many‐shaped leaves
Evaluating riparian vegetation change in canyon-bound reaches of the Colorado River using spatially extensive matched photo sets
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
The effects of requested flows for native fish on sediment dynamics, geomorphology, and riparian vegetation for the Green River in Canyonlands National Park, Utah
Historical and paleoflood analyses for probabilistic flood-hazard assessments—Approaches and review guidelines
Sediment-ecological connectivity in a large river network
Cottonwoods, water, and people-Integrating analysis of tree rings with observations of elders from the Eastern Shoshone and Northern Arapaho Tribes of the Wind River Reservation, Wyoming
Increased drought severity tracks warming in the United States’ largest river basin
Short- and long-term responses of riparian cottonwoods (Populus spp.) to flow diversion: Analysis of tree-ring radial growth and stable carbon isotopes
Effects of flow diversion on Snake Creek and its riparian cottonwood forest, Great Basin National Park
1200 years of Upper Missouri River streamflow reconstructed from tree rings
Age and growth of cottonwood trees along the Missouri River, North Dakota
Effects of age and environment on stable carbon isotope ratios in tree rings of riparian Populus
An old tree and its many‐shaped leaves
Evaluating riparian vegetation change in canyon-bound reaches of the Colorado River using spatially extensive matched photo sets
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.
*Disclaimer: Listing outside positions with professional scientific organizations on this Staff Profile are for informational purposes only and do not constitute an endorsement of those professional scientific organizations or their activities by the USGS, Department of the Interior, or U.S. Government