Foto von Markus Reisenbüchler

Dr.-Ing. Markus Reisenbüchler

Technische Universität München

Projects and research activities

Jan. 2018 - today:

VieWBay: Coupling and of hydrology and hydromorphodynamics in large scales - an approach for whole Bavaria. 

Jan. 2019 - Dec. 2019:

DAAD-IKYDA: NEREID - Development and application of an integrated mathematical model for reservoir sediment management

Jan. 2017 - Nov. 2019:

EU Interreg Project: DanubeSediment - Restoration of the sediment balance in the Danube river

Jan. 2016 - Dec. 2017 and Jan. 2018 - Jun. 2019:

2D-hydromorphological modelling at the Saalach River (WWA-Traunstein, Salzburg AG)



Rivers as an Ecosystem

Lecturer (assistant)
Duration4 SWS
TermSommersemester 2021
Language of instructionEnglish
Position within curriculaSee TUMonline
DatesSee TUMonline


Admission information

See TUMonline
Note: By registering for the course "Rivers as an Ecosystem" via the Hydraulics and Water Resources Chair, you'll automatically have a place in both lectures that are part of this course.


The students will learn the aspects defining natural river systems, the criteria how to identify and describe them, which is the flora and fauna in a natural river system an which standards arise out of these criterias. After attending the course the students are able to: - understand the basics of ecology and chemistry of waters and the interdisciplinary relationships and specific characteristics of aquatic ecosystems - apply the design rules to retrieve the river continuity - analyse the temporal and spatial distribution of biodiversity and productivity in aquatic ecosystems - estimate and assess effects of human intervention on aquatic ecosystems


The course combines the two topics Eco-Hydraulics and Aquatic Ecology, thus comprehensively treating the habitat in watercourses. Eco-Hydraulics: - Flora and fauna in and around river basins; meadow vegetation - Interaction between the river and catchment area - Continuity: requirements, possible forms, structural realization, regulations - Design and calculation of fishways and ramps - Water Framework Directive Water Act Aquatic Ecology: - Aquatic habitats and aquatic ecosystem types; life support services and threats; gas budget, trophic interactions, nutrients and their dynamics - lotic ecosystems as dynamic systems: specific features, functions and threats, river continuum concept, bioindication - lentic ecosystems: ecological classification, specific features, threats, - case studies: biodiversity, extinction and threats to aquatic ecosystems; conservation biology concepts - ecotoxicological aspects: endpoints, xenobiotics and endocrine disruptors; human impacts and effects of use on aquatic ecosystems


"Grundmodul Wasserbau und Wasserwirtschaft" and "Ergänzungsmodul Wasserbau und Wasserwirtschaft"

Teaching and learning methods

Block courses in two parts: part one - lecture "Aquatic Ecology and Conservation" by Prof Geist, part two - lecture "Rivers as an Ecosystem" by Prof. Rutschman. Blackboard; PowerPoint-Folien; Calculations

Recommended literature

Schwörbel: Einführung in die Limnologie Primack: A primer of Conservation Biology Pullin: Conservation Biology Helfman: Fish Conservation Postel & Richter: Rivers for Life: Managing water for people and nature Di Guilio & Hinton: The toxicology of fishes



  • Reisenbüchler, M.; Bui, M.D.; Rutschmann, P. Reservoir Sediment Management Using Artificial Neural Networks: A Case Study of the Lower Section of the Alpine Saalach River. Water 202113, 818.
  • Reisenbüchler, M (2020): Rolling stones - Modelling sediment in gravel bed rivers. Dissertation, TUM (
  • Reisenbüchler, M; Skiba, H; Schwaller, G. Außendorf, M. DanubeSediment: Wie steht es um den Sedimenthaushalt der Donau? Korrespondenz Wasserwirtschaft 2020 
  • Reisenbüchler, M.; Bui, M.D.; Skublics, D.; Rutschmann, P. Sediment Management at Run-of-River Reservoirs Using Numerical Modelling. Water 202012, 249.
  • Reisenbüchler, M.; Bui, M.D.; Skublics, D.; Rutschmann, P. Enhancement of a numerical model system for reliably predicting morphological development in the Saalach River. International Journal of River Basin Management 2020
  • Kaveh, K.; Reisenbüchler, M.; Lamichhane, S.; Liepert, T.; Nguyen, N.D.; Bui, M.D.; Rutschmann, P. A Comparative Study of Comprehensive Modeling Systems for Sediment Transport in a Curved Open Channel. Water 201911, 1779. 
  • Reisenbüchler, M.; Bui, M.D.; Skublics, D.; Rutschmann, P.  An integrated approach for investigating the correlation between floods and river morphology: A case study of the Saalach River, Germany. Science of The Total Environment 2019 Vol. 647, p: 814-826. 
  • Reisenbüchler, M.; Liepert, T.; Nguyen N.D.; Bui M.D.; Rutschmann, P. Prelimirary study on a Bavaria-wide coupled hydrological and hydromorphological model. Proc. of the 32nd EnviroInfo conference, Garching, Germany, 2018 p:145-148 (
  • Reisenbüchler, M.; Nguyen N.D.; Liepert, T.; Bui, M.D.; Rutschmann, P. TELEMAC - A hydrodynamic solver for HPC? InSiDE Magazine Spring 2018, 2018, Vol. 16, p 95:97 (
  • Reisenbüchler, M.; Bui, M.D.; Skublics, D.; Rutschmann, P. Implementing the concept of sediment balance for reliable predicting future river development and management: A hydro-morphological study in the Saalach River. Proc. of the 5th IAHR Europe Congress - New Challenges in Hydraulic Research and Engineering, Trento, Italy, 2018 p: 541-542. (download)
  • Reisenbüchler, M.; Bui, M.D.; Skublics, D.; Rutschmann, P. Hydromorphological effects of an open stone ramp on flood events in the Saalach River. Book of Abstracts of the International symposium on the effects of global change on floods, fluvial  geomorphology and related hazards in mountainous rivers, Potsdam, Germany, 2017 p: 46-47. (download)
  • Reisenbüchler, M.; Bui, M.D.; Rutschmann, P. Implementation of a new Layer-Subroutine for fractional sediment transport in SISYPHE. Proceedings of the XXIIIrd Telemac-Mascaret User Conference, Paris, France, 2016 p: 215-220. (download)


  • 03/2016 - 10/2020: PhD-study at the Chair of Hydraulic and Water Resources Engineering, TUM
  • 10/2013 - 03/2016: M.Sc. Environmental Engineering, Technische Universität München
    • Master's Thesis: The influence of an open stone ramp on flood events in the Saalach river
  • 10/2010 - 09/2013: B.Sc. Environmental Engineering, Technische Universität München
    • Bachelor's Thesis: Hochwasserbasisstudie an der Glonn in Allershausen (WWA-München)


Supervised Theses and Study Projects

Master's Thesis:

  • Untersuchungen zur Hydromorphologie großer Gletscherflüsse - Am Beispiel des Katuns
  • Implementierung des Sedimenttransportes über Wehre in TELEMAC-MASCARET
  • Analyse der hydromorphologischen Veränderung der bayerischen Donau der letzten 200 Jahre
  • Entwicklung einer Methode zur automatischen Bestimmung der Sohlrauheit für hydraulische Simulationen mit TELEMAC-2D
  • Analysis of numerical modelling results using ANN
  • Langzeitsimulation des Geschiebetransports: Parameterstudie zur Rechenzeitoptimierung am Beispiel der Unteren Salzach 
  • Comparison of two hydromorphological softwares - Hydro_AS and Telemac

Study Project:

  • Analysis of the inflow velocity field of power plants with a 2D numerical model
  • Literature Review (IKYDA-NEREID) Different Models in the Scientific Hydraulic Work & The Influence of Climate Change on Sediments and Reservoir Management
  • Hydromorphologische Modellierung an der Isar zwischen Lenggries und Bad Tölz

Bachelor's Thesis:

  • Rekonstruktion von Schwebstoffdaten mittels Künstlicher Intelligenz: Künstliche Neuronale Netze und Suchverfahren
  • Erstellung eines 1D Modells der Deutschen Donau (engl.: 1D HEC-RAS Modell of German Danube)
  • Literaturstudie zum Einfluss der Sohlporosität auf den Geschiebetransport (engl.: Literaturestudy about the effect of soil porosity on sedimenttransport)
  • Der Einfluss von Buhnen auf Stauraumspülungen in der Saalach
  • Effiziente Modellierung von Sohlenbauwerken in Telemac2D - Die Saalach von Kiblingersperre bis Zollhauswehr (engl.: Efficient modeling of riverbed buildings in Telemac2D - The river Saalach from the Dam Kibling to the Zollhaus Weir)