7.4.2. Statistical Test for Network Adequacy

Try these first

1. 1.

   What does 'N' represent in the network adequacy formula?

   Hint

   Think about what we assess for adequate rainfall measurement.

2. 2.

   What does the coefficient of variation indicate?

   Hint

   Consider how much data varies around the average.

3. 3.

   What is the main purpose of the statistical test in network adequacy?

   • To predict future rainfall
   • To assess the required number of gauges
   • To evaluate historical data

   Hint

   Focus on what 'network adequacy' means.

4. 4.

   True or False: If the actual number of rain gauges is greater than N, the network is inadequate.

   • True
   • False

   Hint

   Consider what 'adequate' actually reflects in this context.

5. 5.

   A region has a coefficient of variation (Cv) of 0.5 and an allowable error of 5%. Calculate the required number of rain gauges and discuss if a network with 10 gauges is adequate.

   Hint

   Remember to square Cv and divide by allowable error.

6. 6.

   If a network is found to be inadequate despite having sufficient gauges, what could be potential reasons?

   Hint

   Think critically about where and how gauges collect data.