Understanding Irrigation Scheme Classification by Command Area

Irrigation schemes are vital infrastructure for agriculture, helping to supply water to crops, especially in areas with insufficient rainfall. These schemes are typically classified into different categories based on the size of the area they are designed to irrigate. This area is commonly referred to as the 'command area'. The classification helps in planning, funding, and managing these projects.

The primary classification of irrigation schemes in many regions, including India, is based on the Culturable Command Area (CCA). The Culturable Command Area is the area that can be irrigated and is suitable for cultivation within the command area of a project. Based on the size of the CCA, irrigation projects are categorized into three types:

• Major Irrigation Schemes: These schemes have a large command area.
• Medium Irrigation Schemes: These schemes cover a moderate command area.
• Minor Irrigation Schemes: These schemes are the smallest in terms of command area.

Classifying Minor Irrigation Schemes

A specific threshold for the command area is used to define a minor irrigation scheme. According to standard definitions used in irrigation planning and statistics, an irrigation scheme is classified as 'minor' if its Culturable Command Area (CCA) is equal to or less than a particular limit. This limit sets minor schemes apart from medium and major schemes.

Let's look at the typical classification criteria:

Based on this widely accepted classification, an irrigation scheme is considered 'minor' if its Culturable Command Area (CCA) is up to 2000 hectares. This threshold is a key point in distinguishing minor irrigation schemes from larger projects.

The question asks for the command area size that defines a minor irrigation scheme as equal to or less than a certain value. Looking at the definition and the table above, a minor irrigation scheme has a command area equal to or less than 2000 hectares.

Analyzing the Options for Minor Irrigation Command Area

The options provided are:

1. 2000 hectares
2. 1000 hectares
3. 500 hectares
4. 100 hectares

We are looking for the value such that if the command area is equal to or less than this value, the scheme is classified as minor. According to the established classification, the limit for a minor irrigation scheme is a command area equal to or less than 2000 hectares.

Therefore, the correct command area limit for a minor irrigation scheme to be equal to or less than is 2000 hectares.

Revision Table: Irrigation Scheme Classification

Additional Information on Irrigation Scheme Command Area

Understanding command area is crucial in irrigation projects. There are typically two terms used:

• Gross Command Area (GCA): This is the total area commanded or served by an irrigation system, including cultivated, uncultivated, and inhabitable areas within the project boundary.
• Culturable Command Area (CCA): This is the portion of the Gross Command Area that is suitable for cultivation. The classification of irrigation schemes (Major, Medium, Minor) is based on the CCA.

Minor irrigation schemes often involve groundwater wells, tube wells, small tanks, or lift irrigation schemes. They are typically localized and cater to the irrigation needs of relatively smaller areas compared to medium or major projects like large dams and canal networks.