The trenches are not like ponds or well. They are mainly there to soak water into the land and also for creating microorganisms through mulch.
If you want to check the effectiveness of trenches and water harvesting methods, do the following:-
- Check the water level in your borewell on a particular day every month, if possible.
- Create the trenches and water harvesting methods before the monsoon.
- Repeat the Point 1 after the rainfall. You will be amazed to see the difference.