7.5.3. Inverse Distance Method

Try these first

1. 1.

   What is the basic formula for the Inverse Distance Method?

   Hint

   Think about the contributions of known rainfall values.

2. 2.

   Why is distance squared used in this method?

   Hint

   Consider how gravity works.

3. 3.

   What does the Inverse Distance Method facilitate?

   • A. Data collection
   • B. Filling in missing rainfall data
   • C. Increasing costs

   Hint

   Focus on what this method is designed to accomplish.

4. 4.

   True or False: The influence of each station's data in the Inverse Distance Method is the same regardless of distance.

   • True
   • False

   Hint

   Remember how we weight the values.

5. 5.

   Given station data for rainfall: A (50mm, 1 km), B (20mm, 3 km), C (30mm, 5 km), what is the estimated rainfall for D?

   Hint

   Break down the contributions and apply the formula stepwise.

6. 6.

   Evaluate how the placement of rainfall stations affects the accuracy of the Inverse Distance Method when stations are clustered densely in one area and sparse in another.

   Hint

   Consider factors about spatial distribution and reliability of estimates.