River modeling

River engineering, River morphology, Hydraulic modelling, Flows, Hydraulic engineering and structures, Flooding, Impacts and compensation
Discipline: Free surface hydraulics

This course provides students with a solid grounding in hydraulic modeling. Students learn the equations of free-surface hydraulics under steady-state and non-stationary conditions. They learn how to make the transition from field study to hydraulic modeling: by taking topographic and hydrometric measurements, observing hydraulic indicators (high-water marks, hydrogeomorphological formations, hydraulic jumps, etc.) and then establishing in situ hypotheses for the functioning of watercourses.
Several scales can be explored, depending on the chosen subject: the habitat scale, that of the developed reach, that of the flooding watercourse. For each scale, students can study and implement specific structures in their modeling (fish ladders, lateral weirs, weirs, dykes, dams, etc.). The impact of these structures is simulated and analyzed in terms of hydrodynamics and hydraulic continuity.
The study is deployed on a single case study, from the field phase through to the modeling and presentation of the impact of developments. Work is carried out in groups.

A field trip enables learners to analyze the terrain and conceptualize it in a topographical and hydraulic model. In situ operating hypotheses are formulated and compared with models and results.

Finally, the EU offers students an analysis based on a real case of development or intervention in a watercourse, with an assessment of the initial state, an analysis of the impacts of the intervention, and proposals for hydraulic compensation where appropriate.

- Measure the topography of real terrain; Locate in situ high-water marks, hydrogeomorphological features and flow zones
- Understand the mechanisms governing the equations of stationary and non-stationary free-surface hydraulics, and the role of boundary conditions
- Characterize flow at different scales (river, reach, structure, habitat), habitat)
- Set up a hydraulic model of a real harnessed reach
- Use the modeling tool to study the behavior of the water line at a structure and deduce the impact of the structure on the environment
- Defend your technical results orally (detailed and technical presentation).

M1 S2 course Ecological restoration (ecology, hydrology, morphology, continuities, restoration) or equivalent; MOOC des rivières et des Hommes, reading of Degoutte's book.

This course should be continued with the M2S3 course on Ecological Engineering and Restoration, which will extend the concept of continuity and hydraulic compensation to include the concepts of ecological continuity and restoration, and ERC sequences for integrating the environment into development projects and action plans or programs for watershed management.

Continuous assessment based on final project presentation (and interim reports).