9.1. IMD Rainfall Records

Try these first

1. 1.

   What are the five main forms of precipitation?

   Hint

   Think of rain-related weather conditions.

2. 2.

   Which instrument is used to measure rainfall?

   Hint

   It's a tool to collect water data.

3. 3.

   What is the principal form of precipitation in India?

   • Sleet
   • Hail
   • Rain

   Hint

   Think about the most common weather we experience.

4. 4.

   True or False: The Indian Meteorological Department provides real-time rainfall data.

   • True
   • False

   Hint

   Consider how weather organizations operate.

5. 5.

   If a region has a rainfall of 2,000mm using the isohyetal method and another region has 1,500mm using the Thiessen polygon method, which region would you expect to have a denser network of rain gauges and why?

   Hint

   Consider the effects of varying rainfall on gauge placement.

6. 6.

   Design a simple drainage system for an area where the IDF curve indicates that a 10-year storm will produce 100mm of rainfall in an hour, explaining your design considerations based on peak rainfall intensity.

   Hint

   Think about how drainage systems manage heavy rainfall.