River eco-morphodynamics and bioengineering
Summary
The course deals with the interactions between hydraulics, solid transport by hauling and the watercourse space at the origin of the morphology and richness of habitats. Regime theory is presented and the quality of a stream's habitat is assessed.
Content
- River corrections
- Objectives and historical examples
- Problems of of river corrctions without taking morphology into account
- Interaction between solid transport and morphology
- River revitalization
- Classification of natural watercourses
- Watercourses as corridors linking biotopes
- Assessing the ecological status of a watercourse
- Constraints on revitalization
- Technical measures to reduce ecological deficits
- River revitalization and flood protection - a contradiction?
- River dynamics
- Transient flows and solid transport
- Alluvial dynamics
- Disruption of the natural regime by hydraulic engineering: problems of residual flow, tidal range and bed clogging. Solutions for mitgating adverse effects.
- Cleaning up hydropeaking
- Restoration of bed load
- Bedforms and flow resistance
- Dynamic bedforms
- Vertical and horizontal morphologies
- Bed and bank resistance
- Natural morphological regimes
- Regime theory (width, slope, depth)
- Meanders and braided beds
- Local widening
- Interaction between morphology and habitat quality for aquatic species
- Fish ecology and habitats
- Habitat modeling
- Longitudinal and lateral connectivity: fish migration
Keywords
River revitalization, river development, river space, river morphology, regime theory, habitat diversity, connectivity and fish migration
Learning Prerequisites
Recommended courses
Mécanique des fluides, Hydrologie de l'ingénieur, Ouvrages et aménagements hydrauliques
Learning Outcomes
By the end of the course, the student must be able to:
- Assess / Evaluate the ecological status of a river
- Apply regime theory
- Identify bedform formation
- Plan and carry out a field measurement campaign
- Recognize critical points for river revitalization
Transversal skills
- Plan and carry out activities in a way which makes optimal use of available time and other resources.
- Identify the different roles that are involved in well-functioning teams and assume different roles, including leadership roles.
- Take responsibility for environmental impacts of her/ his actions and decisions.
- Access and evaluate appropriate sources of information.
- Make an oral presentation.
- Write a literature review which assesses the state of the art.
- Summarize an article or a technical report.
- Write a scientific or technical report.
Teaching methods
Ex cathedra and exercises, fieldwork, literature analysis
Assessment methods
Written test on semester course material
(individual grade = 50% of final grade)
Exercise and practical work during the semester (Practical work: Assessment of the ecological status of a watercourse, report and oral presentation; Review of the literature establishing the state of the art on a subject covered in the course, with oral presentation)
(average of group marks = 50% of final mark)
Supervision
Office hours | Yes |
Assistants | Yes |
Resources
Notes/Handbook
Eco-morphologie fluviale par J.-L. Boillat, 2009
Moodle Link
Dans les plans d'études
- Semestre: Automne
- Forme de l'examen: Pendant le semestre (session d'hiver)
- Matière examinée: River eco-morphodynamics and bioengineering
- Cours: 2 Heure(s) hebdo x 14 semaines
- Exercices: 2 Heure(s) hebdo x 14 semaines
- Type: optionnel
- Semestre: Automne
- Forme de l'examen: Pendant le semestre (session d'hiver)
- Matière examinée: River eco-morphodynamics and bioengineering
- Cours: 2 Heure(s) hebdo x 14 semaines
- Exercices: 2 Heure(s) hebdo x 14 semaines
- Type: optionnel
- Semestre: Automne
- Forme de l'examen: Pendant le semestre (session d'hiver)
- Matière examinée: River eco-morphodynamics and bioengineering
- Cours: 2 Heure(s) hebdo x 14 semaines
- Exercices: 2 Heure(s) hebdo x 14 semaines
- Type: optionnel
- Semestre: Automne
- Forme de l'examen: Pendant le semestre (session d'hiver)
- Matière examinée: River eco-morphodynamics and bioengineering
- Cours: 2 Heure(s) hebdo x 14 semaines
- Exercices: 2 Heure(s) hebdo x 14 semaines
- Type: optionnel