Canals

Canals

• 2.
  A channel filledwith water and designed for navigation, or for irrigating land, etc. An artificial watercourse or extensively modified natural channel used for inland water transport and/or the control and diversion of water for drainage or irrigation
• 3.
  Classification based on a.permanency b. Size c. Alignment d. Canal surface e. Purpose f. Financial return
• 4.
  CLASSIFICATION BASED ONPERMANENCY 1. Temporary canal1. Permanent canal
• 5.
  (BASED ON DISCHARGE) MAINCANAL BRANCH CANAL MAJOR DISTRIBUTARY MINOR DISTRIBUTARY WATER COURSE OR FIELD CHANNEL
• 6.
  Main Canal takesoff directly from the upstream side of weir head works or dam. Usually no direct cultivation is proposed
• 7.
  All offtakes frommain canal with head discharge of 14-15 cumecs and above are termed as branch canals. Acts as feeder channel for major distributaries
• 8.
  All offtakes frommain canal or branch canal with head discharge from 0.028 to 15 cumecs are termed as major distributaries. All offtakes taking off from a major distributary carrying discharge less than 0.25 cumec are termed as minor distributaries Small channels which carry water from the outlets of a major or minor distributary or a branch canal to the fields to be irrigated.
• 10.
  Based on alignment 1.Watershed canal 2. Contour canal 3. Side slope canal
• 12.
  (Based on Liningbeing Provided or not) 1. Unlined canals 2. Lined canals
• 13.
  An unlined canalis the one which has its bed and banks made up of natural soil through which it is constructed and not provided with a lining of impervious material A lined canal is provided with a lining of impervious material on its bed and banks to prevent the seepage of water
• 14.
  1.Irrigation canal 2.Power canal 3.Navigationcanal 4.Water supply canal 5.Feeder canal 6.Carrier canal 7.Multipurpose canal Classification based on purpose
• 15.
  1. Productive canals 2.protective canals Classification based on financial returns
• 16.
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