11.3. Methods for Checking Consistency

Try these first

1. 1.

   What is the purpose of the Double Mass Curve method?

   Hint

   Think about how cumulative rainfall is used in this method.

2. 2.

   Name one limitation of the Double Mass Curve method.

   Hint

   Consider the relationship between data sources.

3. 3.

   What does a straight line on a Double Mass Curve indicate?

   • Inconsistency
   • Consistency
   • Unreliable data

   Hint

   Think about the implications of a straight line in graphical analysis.

4. 4.

   True or False: The DMC method can correct inconsistent data directly.

   • True
   • False

   Hint

   Consider what the DMC method's main function is.

5. 5.

   Suppose you have rainfall data from three stations. After using the DMC method, you find an inconsistency in one station’s readings. Design a plan using statistical tests to confirm the inconsistency before making adjustments.

   Hint

   Plan stepwise verification through visualization and statistics.

6. 6.

   You are tasked with analyzing rainfall trends over the past 30 years. Describe how you would apply both the DMC and SNHT to this dataset.

   Hint

   Combine graphical methods with mathematical tests for robust analysis.