These are the drainage system class 11 notes geography prepared by team of expert teachers. Characteristics of the drainage basin the drainage basin. Through interactive discussion, we explore regional landscape and the geomorphic form, function, and processes of a drainage basin system. Hydrological processes within a river basin drainage basin. River basin processes drainage basin river free 30. This work had been conducted under the guidance of dr a.
Outputs include channel runoff, evapotranspiration and groundwater flow. The drainage basin system the drainage basin bbc bitesize. The drainage area of a basin is the area which contributes water to a particular channel or set of channels within a drainage basin. A standardized mapping of natural drainage basins in connecticut was completed in 1981 by the. Drainage basins are open systems, with inputs, stores and outputs. A drainage basin system is a part of the worlds hydrological water cycle. A drainage basin provides a limited surface area within which physical processes pertinent to the general hydrology may be considered. According to the configuration of the channels, drainage systems can fall into one of several categories known as drainage patterns. A watershed is an area of land that drains all the streams and rainfall to a. The drainage basin is considered as a geomorphic unit.
This is the total volume of water flowing through a channel at any given point and is measured in cubic metres per second cumecs. Pdf drainage basin responses to climate change researchgate. It includes water found in the water table and surface runoff. You should be able to explain why once you have seen the following slides. Pdf relationship between drainage basin area and stream. Ppt the drainage basin system powerpoint presentation. A drainage basin an area of land drained by a river and its tributaries where any precipitation is collected or drained into it. Its boundary is marked by a ridge of high land called watershed drainage basins have one main stream and many tributaries. With a partner, list as many rivers as you can in 60 seconds. A drainage basin is known as open system because water can be added and lost too inputs when water is added to the system processes when water is moving in the system stores when water is stationary in the system outputs when water leaves a system task 2 complete the activity at the bottom. Discharge river discharge river discharge is the volume of water flowing through a river channel. Drainage reversal of the amazon river due to the coupling. This is a short video to be used as either an instructional video or revision tool.
The drainage basin hydrological system is a local open system. Drainage basin the features of a drainage basin gcse geography in this video, we look at drainage basins taking a look specifically at the river rhine. The main input is precipitation which is regulated by various means of storage. A drainage basin is the area of land that it drained by a river and its tributaries. The index of the cell of the adjacent drainage basin in the lowest passage is stored in the sill array. These are graphs that show how a drainage basin responds to a period of rainfall. Drainage basin hydrological system a level geography. Drainage basins in europe national geographic society.
Its input is precipitation in the form of rain or snow and its outputs can be seen as evapotranspiration and the river flow itself. Chapter i the drainage basin as a system unit sciencedirect. Drainage basin the features of a drainage basin gcse. Figures and reference to a storm event should be used to support your answer. There are many interrelationships within this system. The climatic variables and the water and sediment discharge, water storage, and evapotranspiration may be measured. A survey on the surface water drainage system in west bengal and the pollution. A drainage basin is an area of land drained by a river and its tributaries river system. A drainage basin is any area of land where precipitation collects and drains off into a common. Students are expected to complete their assignment on drainage basin analysis during the following week, working from the maps provided. A major component of the water cycle is the drainage basin system. Watch the video to the right hand side and make notes on the following.
Transfers are processes by which water flows or moves through the system, eg. To analyse the functioning of a drainage basin as an open system with inputs, outputs, transfers, stores and feedback loops. Write a short paragraph describing two different ways that water passes through the drainage basin system. It sizes drainage networks and includes flow controls, infiltration systems and. If you have a textbook on the drainage basin then this can be used to encourage reading and research however, the lesson can be taught without one. If students have difficulty, you may choose to demonstrate the process of delineating a drainage basin on. The drainage basin system is demarked by a watershed, this is the upper limit. The drainage basin system within the system are stores and transfers flows stores are places where water is held, eg. Careful consideration of the ways processes interact to result in a high or low probability of flooding is vital. The hydrological cycle we define it as a closed system because it goes round and round and nothing can be added and nothing can be taken away.
When a droplet of water falls onto the land as precipitation, gravity will make sure that the water is. Some water is released via a small outlet from the lake and some can be evaporated into the atmosphere. Explain the main hydrological characteristics and processes which operate within rivers and drainage basins. When it comes to sustainable drainage design, microdrainage does the heavy lifting so you dont have to. There is an imaginary line separating drainage basins called a watershed. Begin with a brief outline of the main characteristics of your drainage basin. This is a series of processes by which water is evaporated from the sea and. It also has several more words added, and a couple more ideas besides. A standardized mapping of natural drainage basins in connecticut was completed in 1981 by the connecticut department of environmental protection dep. This drainage basin system divided connecticut into 8 major basins, 45 regional basins, 337. Channel processes, river morphology, drainage basin, river system, stream order, hortons laws, alluvial plain, channel pattern, sediment load, rejuvenation. Advanced drainage design software that optimises the performance and effectiveness of drainage systems, including suds both greenfield and retrofit. The hydrological cycle and drainage basin systems youtube.
Download revision notes for drainage system class 11 notes geography and score high in exams. The drainage basin system 1 the drainage basin system. Students read about and trace drainage basins in europe. This drainage basin system divided connecticut into 8 major basins, 45 regional basins, 337 subregional basins, 2,898 local basins, and 7,067 small drainage basin. Channels in alluvial plains glossary bibliography biographical sketch to cite this chapter summary channel. A drainage basin provides a limited unit of the earths surface within. Tropical rainforests are thought to intercept up to 80% of rainfall, whereas arable land intercepts less than 10% of rainfall. The basin may terminate in a lake that has no outlet in some arid regions, the ocean, or. Drainage patterns depend on the topography and geology of the land accordant drainage patterns.
1038 1355 1207 1133 129 183 532 273 741 1109 1314 357 1233 175 1402 31 501 1466 632 168 371 1028 754 71 800 1173 374 752 911 1237 227 105 976 524 783 889