dr.ir. (T.N) Theo Olsthoorn

Theo Olsthoorn joined the Water Resources Section as a part-time professor of groundwater exploration in September 2004. He is also senior researcher hydrology for Waternet (Amsterdam Water Supply).

Professor Olsthoorn is a former MSc and PhD graduate of Delft University of Technology and has working experience in a number of renowned Dutch hydrological institutes.


  • Part-time professor Geohyrology Delft. Courses Geohydrology I and II (CT4420, CT5440)
  • Invited lecturer at IHE (Advanced groundwater flow), 2001-present
  • Invited lecturer in the graduate course of Prof. Kop (Technical University Delft, Civil Engineering/Sanitary Engineering) on groundwater modeling using spreadsheets (about 1993-1997).
  • Post Academic Courses in Delft on artificial recharge of groundwater, and modeling of groundwater (several times)

Leadership & Coordination

  • IAHS, since ca. 1984, member of the board of the Dutch chapter since 2001, since 2010 president.
  • President of SWIM17, the 17th Salt Water Intrusion Meeting, Delft, 6-10 May 2002
  • Co-president of the one-day symposium “Calibration of Groundwater models”(In Dutch), Dutch Hydrological Association, 7 March 2001, Preface..
  • President of TISAR, the third international symposium on artificial recharge, Amsterdam 1998. The conference was opened by the crown Prince, Willem Alexander.
  • Co-president of the one-day symposium on calibration of groundwater models, 1996


  • 1968 – 1974 Delft University of Technology, Master’s degree in Sanitary Engineering & Hydrology (Civil Engineering)

Work Experience

  • 2004 – present Delft University of Technology, Professor
  • 1990 – present Waternet Amsterdam, Hydrologist
  • 1974 – 1978 KIWA Water Research Institute, Researcher / Hydrologist

Links to projects and researches

Research Group :


Specialisatie :

DER (Distributed Energy Resources): Hydropower

TU Delft

 Gebouw 31 Jaffalaan 5
       2628 BX Delft