Question

Compare the advantage and disadvantages of multi-purpose river projects.​

Answer 1

Answer:

A dam built across a river often serves more than one purpose at a time and it is termed as a multipurpose project. It comes with some advantages at the same time some disadvantages. The advantages are flood control in flood-prone areas, irrigation facilities, hydroelectricity, check soil erosion etc.

Answer 2

Answer:

Explanation:

advantages of multipurpose project

1. Irrigation Facility:

Extension of irrigation facility is one of the important objectives and advantage of multipurpose projects. These projects can stimulate the agricultural productivity for meeting the growing requirement of food and raw materials required for increasing non-farm activities.

2. Flood Control:

Another important objective of such projects is to control the occurrence of floods creating havocs on the economy.

3.Forests and Fisheries:

These projects can help to raise forestry on the banks of the canals. Moreover, it can also encourage the development of fisheries in the reservoirs.

4. Drinking Water:

Such projects facilitate the development of safe drinking water projects for the adjoining areas.

disadvantages of multi-purpose river projects.​

1. Exaggerated Benefits on Irrigation:

It has been argued that irrigation benefits derived out of multi-purpose projects are exaggerated because the actual area irrigated by these projects is much less due to delay in the construction of field channels and water routes. Moreover delay in completion of these projects has resulted in high escalation of its cost.

2. Higher Cost of Hydropower:

Although hydro power is having the advantage of low operating cost, renewable source and eco-friendly but at the same time it is also subjected to long gestation period, delay in commissioning the project resulting escalation of project cost and higher initial cost. All these have resulted in a comparatively higher unit cost of generation in respect of hydro power.

3. Least Flood Control Benefit:

The multi-purpose projects have also failed to derive maximum benefit in respect of flood control as the embankments, drainage channels and flood protection schemes have failed miserably to achieve results.

4. Adverse Environmental Impact:

Finally, the multi-purpose projects have resulted serious adverse environmental impact in respect of degradation of soil content arising out of waterlogging and soil salinity in its command areas.

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