Question

Area of the micro-watershed is

• A. 10-100 ha
• B. 100-1000 ha
• C. 1000-10000 ha
• D. 10000-50000 ha

Hint:

Place mini, micro, milli and sub-watershed in increasing order of size and match the range.

Answer 1

The Correct Option is B

Step 1: Understanding the Question:
The question asks for the standard size range assigned to a micro-watershed in watershed management classification.

Step 2: Key Concept:
A watershed is the whole land area that drains to one outlet point, and for planning purposes it is broken into smaller named units by size, from the largest river basin down to the smallest mini-watershed. Each named unit has an accepted hectare range used in soil and water conservation planning in India.

Step 3: Detailed Explanation:
The commonly used size classification, from smallest to largest, runs as follows: mini-watershed about 10 to 100 ha, micro-watershed about 100 to 1000 ha, milli-watershed about 1000 to 10000 ha, and sub-watershed about 10000 to 50000 ha, with macro-watershed above that.
The option 10-100 ha belongs to the mini-watershed, not the micro-watershed.
The option 1000-10000 ha belongs to the milli-watershed, a larger unit than a micro-watershed.
The option 10000-50000 ha belongs to the sub-watershed, which is far larger than a micro-watershed.
Only the 100-1000 ha range is assigned to the micro-watershed in this scheme.

Step 4: Final Answer:
The area of a micro-watershed is 100-1000 ha, option (2). Since different textbooks sometimes shift these boundary numbers slightly, this answer follows the size ladder most commonly taught in Indian soil and water conservation courses.