Development of Watershed Area — Flashcards
Maharashtra Board · Class 10 · Water Security
46 flashcards for Development of Watershed Area (Maharashtra Board Class 10 Water Security) to test yourself on key terms and facts.
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What is a watershed area?
Answer
A watershed area is the whole area where water naturally flows from mountains through small streams and a nallah. It is the area that collects and drains rainwater together.
How large can a watershed area be?
Answer
A watershed area can range from 50 hectares to 500 hectares or more, depending on the elevation of the land.
Why is a small watershed area given first priority in development work?
Answer
Small watershed areas are selected first because they are easier to survey, manage, and treat in a planned way. This helps water conservation work begin effectively from a limited area.
Why must the entire area be surveyed before starting watershed development?
Answer
A survey is needed to learn the land slopes, direction of water flow, type of land, and how much water can be blocked. This information helps in deciding what work should be done and where it should b…
From where should watershed treatment work start?
Answer
The work should start from the highest point in the area selected for treatment. When treatment begins from the top, rainwater gradually seeps into the lower region and helps raise the groundwater lev…
What happens when watershed treatment begins from the highest point?
Answer
Rainwater from the hills slowly begins to seep downward, the groundwater level rises in the first year, and the water level in wells below also rises.
What are Continuous Contour Trenches (CCT)?
Answer
Continuous Contour Trenches are trenches dug according to the slope of hill land to block rainwater and help it seep into the soil. They reduce erosion and store water in the ground.
How far can rainwater flow before collecting in CCT trenches?
Answer
Rainwater can flow a maximum of 5 to 6 meters before it accumulates in the trenches and seeps into the soil.
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