Calculate hydraulic mean depth for concrete-lined channel to carry a discharge of 350 cumecs at a slope of 1 in 5000. The value of manning’s constant for the lining is 0.015. The side slopes of a channel may be taken as 1.5:1. Assume limiting velocity in the channel as 2m/sec.

Irrigation Canals and its Economics topics include: Canal lining, channel cross-sections, lining advantages, hard surface, earth type or rigid linings, canal lining requirements and expansive soils. Irrigation canals can have positive economic effects, such as: Higher incomes: Investments in irrigation canals can lead to higher incomes for both landowners and landless workers. Higher agricultural productivity: Irrigation canals can increase agricultural productivity in "treatment" villages. Incremental income: Canal irrigation can lead to incremental income from well irrigation. This can... Show more

Irrigation Canals and its Economics topics include: Canal lining, channel cross-sections, lining advantages, hard surface, earth type or rigid linings, canal lining requirements and expansive soils.

Irrigation canals can have positive economic effects, such as:
Higher incomes: Investments in irrigation canals can lead to higher incomes for both landowners and landless workers.
Higher agricultural productivity: Irrigation canals can increase agricultural productivity in "treatment" villages.

Incremental income: Canal irrigation can lead to incremental income from well irrigation. This can be due to:
Increased area under well irrigation
Shifts in cropping patterns
Improved irrigation leading to higher yields 

Irrigation canals also have other advantages, including:
Greater output: Canals can produce more output per hectare of land than other methods.
Portable water: Canals can deliver portable water and produce hydroelectricity.
Flooding prevention: Canal irrigation systems can help prevent floods. 

However, irrigation canals also have some disadvantages, including:
Maintenance: Improper maintenance can reduce the capacity of the canal.
Water distribution: Variability in water distribution can lead to water shortages and sediment accumulation.
Stationary water: Stationary water can lead to insect growth.
Construction: Canal construction can be time-consuming and expensive.

Related Test: Irrigation Engineering Practice Test: Canal Irrigation System

Show less