Welcome to the website of the Fluvial, Oceanic, and Water-level Sciences (FLOWS) research group of the Department of Civil and Environmental Engineering at Portland State University. The unifying theme of our work is the influence of hydrodynamic processes on ecosystems. Though we specialize in physical oceanography, we study topics ranging from juvenile salmon to climate change, and wavelet transforms to beach ripples.

For life and death are one, even as the river and the sea are one.
Khalil Gibran, The Prophet
Three things cannot be long hidden: the sun, the moon, and the truth.
The care of rivers is not a question of rivers, but of the human heart.
Tanaka Shozo, 1910
So, I’m just gon’ sit on the dock of the bay Watchin’ the tide roll away, ooh I’m sittin’ on the dock of the bay Wastin’ time
Otis Redding. (Sittin' On) The Dock of the Bay. The Dock of the Bay. 1968
Cryin’ won’t help you, prayin’ won’t do you no good, Now, cryin’ won’t help you, praying won’t do you no good, When the levee breaks, mama, you got to move
Led Zeppelin. "When the Levee Breaks". Led Zeppelin IV. 1971
Big whorls have little whorls, which feed on their velocity, And little whorls have lesser whorls, and so on to viscosity.
Dr. Lewis Richardson in Weather Prediction by Numerical Processes, pg. 66, 1922
I’ve known rivers: I’ve known rivers ancient as the world and older than the flow of human blood in human veins. My soul has grown deep like the rivers.
Langston Hughes
Turbulence is the most important unsolved problem of classical physics.
Richard Feynman
We owe our lives to the sun… How is it, then, that we feel no gratitude?
Lewis Thomas, Earth Ethics (Summer 1990)
… Ocian in view! O! the joy! …
Captain William Clark upon seeing the Columbia River estuary, Nov. 7, 1805