National Technical University of Athens
School of Civil Engineering
Department of Water Resources and Environmental Engineering

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Demetris Koutsoyiannis is professor of Hydrology and Analysis of Hydrosystems in the National Technical University of Athens, Dean of the School of Civil Engineering, and former Head of the Department of Water Resources and Environmental Engineering. He is also Co-Editor of Hydrological Sciences Journal and member of the editorial board of Hydrology and Earth System Sciences (and formerly of Journal of Hydrology and Water Resources Research). He has been awarded the International Hydrology PrizeDooge medal (2014) by the International Association of Hydrological Sciences (IAHS) with the UNESCO and the World Meteorological Organization (WMO), and the Henry Darcy Medal (2009) by the European Geosciences Union (EGU). His distinctions include the Lorenz Lecture of the American Geophysical Union (AGU) (San Franscisco, USA, 2014) and the Union Plenary Lecture of the International Union of Geodesy and Geophysics (IUGG) (Melbourne, Australia, 2011).

Contributions at a glance through: Google Scholar, ResearchGate, ResearcherID (ISI), Scopus

Main research contributions – Views and opinions


Keywords of contribution

What determines the nature and properties of hydrological and geophysical processes? Why these processes exhibit seemingly peculiar behaviours, such as long-term persistence, fluctuations on large scales, clustering, state and time scaling, and heavy (or long) distribution tails?

Principle of maximum entropy

Are future climate projections reliable and do they provide grounds to assess impacts in hydrological processes? How well does current climate research represent the intrinsic climate uncertainty?

Climate stochastics

What are the main characteristics and implications of the Hurst-Kolmogorov stochastic dynamics (also known as the Hurst phenomenon, Joseph effect, scaling behaviour, long-term persistence, multi-scale fluctuation, long-range dependence, long memory)?

Hurst-Kolmogorov dynamics

How can we effectively and consistently describe the behaviour of extreme rainfall and flood? Are hydrological practices for estimating extreme rainfall appropriate? What is the value of the concept of probable maximum precipitation and flood?

Extreme rainfall: Probabilistic description vs. probable maximum precipitation

Do hydrological processes reveal deterministic chaos? Do they exhibit deterministic trends? Or can they be better modelled as stochastic processes?

Deterministic vs. stochastic representation of hydrological processes

How can we build stochastic models of hydrological processes effectively and parsimoniously describing the natural behaviours and peculiarities? How can these behaviours be modelled in a multivariate setting?

Stochastic modelling and stochastic simulation

How can we disaggregate hydrological data? How can we couple stochastic models of different time scales?

Stochastic disaggregation and model coupling

How can we develop and calibrate models of the hydrological cycle or its components?

Rainfall models
Hydrological models

How can we more effectively model and manage large hydrosystems? Can we combine simulation and optimization techniques? How many decision variables do we need in the management of a large hydrosystem? How can we perform global or multicriteria optimization of hydrosystems?


How recent are the modern technologies and management practices in water supply, wastewater, and agricultural water use? What is the contribution of Ancient Greece in hydraulic technologies?

Ancient hydraulic technologies

What are the pathologies of the scientific publishing system and how can it be improved?

Peer review system
My rejected papers


Activities: CV | Appendix to CV | Publications in journals | List of all publications
Courses (mostly in Greek): Stochastic Methods | Urban Hydraulic Works | Hydrometeorology | Theses supervised | Hydroglossica
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