IS 6512 : 2018

Criteria for Design of Cross-Section for Canals

USBR Design Standards
CurrentFrequently UsedCode of PracticeWater Resources · Irrigation and Canal Structures
PDFGoogleBIS Portal
Summary

IS 6512 covers hydraulic design of irrigation canals — geometry, velocity limits, freeboard, and lining. Used by irrigation departments across India.

Criteria for hydraulic design of lined and unlined canal cross-sections for irrigation.

Key Values
Max velocity (unlined)0.6-0.9 m/s
Max velocity (lined)2.0-2.5 m/s
Side slope (earth)1.5H:1V to 2H:1V
Practical Notes
! Lined canals save 30-40% water loss.
! Manning's n=0.015 for concrete, n=0.025 for earth channels.
Cross-Referenced Codes
IS 10430:2009Criteria for Design of Siphons
→
IS 7784:2010Code of Practice for Design of Parallel Runwa...
→
canal designirrigation canalhydraulic designlined canal