Lecture

Stream Regimes: River Eco-Morphology

Graph Chat

Chat with Graph Search

Ask any question about EPFL courses, lectures, exercises, research, news, etc. or try the example questions below.

DISCLAIMER: The Graph Chatbot is not programmed to provide explicit or categorical answers to your questions. Rather, it transforms your questions into API requests that are distributed across the various IT services officially administered by EPFL. Its purpose is solely to collect and recommend relevant references to content that you can explore to help you answer your questions.

In course

ENV-418: River eco-morphodynamics and bioengineering

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. ...

Description

This lecture covers the concept of stream regimes, focusing on the natural width of river beds, the development of watercourses, and the impact of hydraulic constructions. It discusses the different styles of streams, the empirical formulas used to determine river characteristics, and the methods for calculating regime width. The instructor presents historical floods, irreversible constraints, and the ecological functions of rivers. The lecture also explores the morphological adjustments caused by changes in water intake, the longitudinal variation of energy in rivers, and the calculation processes involved in river eco-morphology.

Official source

Related concepts (32)

River

A river is a natural flowing watercourse, usually a freshwater stream, flowing on the surface or inside caves towards another waterbody at a lower elevation, such as an ocean, sea, bay, lake, wetland, or another river. In some cases, a river flows into the ground or becomes dry at the end of its course without reaching another body of water. Small rivers can be referred to by names such as creek, brook, and rivulet. There are no official definitions for the generic term river as applied to geographic features, although in some countries or communities, a stream is defined by its size.

Hydraulic cylinder

A hydraulic cylinder (also called a linear hydraulic motor) is a mechanical actuator that is used to give a unidirectional force through a unidirectional stroke. It has many applications, notably in construction equipment (engineering vehicles), manufacturing machinery, elevators, and civil engineering. A hydraulic cylinder is a hydraulic actuator that provides linear motion when hydraulic energy is converted into mechanical movement. It can be likened to a muscle in that, when the hydraulic system of a machine is activated, the cylinder is responsible for providing the motion.

Hydraulic machinery

Hydraulic machines use liquid fluid power to perform work. Heavy construction vehicles are a common example. In this type of machine, hydraulic fluid is pumped to various hydraulic motors and hydraulic cylinders throughout the machine and becomes pressurized according to the resistance present. The fluid is controlled directly or automatically by control valves and distributed through hoses, tubes, or pipes.

River morphology

The terms river morphology and its synonym stream morphology are used to describe the shapes of river channels and how they change in shape and direction over time. The morphology of a river channel is a function of a number of processes and environmental conditions, including the composition and erodibility of the bed and banks (e.g., sand, clay, bedrock); erosion comes from the power and consistency of the current, and can effect the formation of the river's path.

River engineering

River engineering is a discipline of civil engineering which studies human intervention in the course, characteristics, or flow of a river with the intention of producing some defined benefit. People have intervened in the natural course and behaviour of rivers since before recorded history—to manage the water resources, to protect against flooding, or to make passage along or across rivers easier. Since the Yuan Dynasty and Ancient Roman times, rivers have been used as a source of hydropower.

Related lectures (40)

River Eco-morphology: Stream Regimes and Hydraulic Construction

Explores river eco-morphology, stream regimes, and hydraulic construction methods.

Hydraulic Construction: Evacuation Systems

Explores the design and purpose of hydraulic evacuation systems and the importance of hydraulic modeling for safety.

River Hydraulics and Development

Explores sediment transport, river structures, and hydraulic platforms for river development.

River Morphology: Rhone Corrections and Hydraulic Construction

Explores the second correction of the Rhone river, focusing on eco-morphology, stream corrections, and hydraulic construction.

River Hydraulics and Bedload Transport: De Cesare Platform