7.6. Optimum Rain Gauge Network Design

Try these first

1. 1.

   What does a rain gauge network measure?

   Hint

   Think about what we are trying to measure with rain gauges.

2. 2.

   What does co-efficient of variation (Cv) indicate?

   Hint

   Consider how variation relates to average measurements.

3. 3.

   What is the primary goal of designing an optimum rain gauge network?

   • To increase costs
   • To balance cost and accuracy
   • To reduce the number of gauges

   Hint

   Consider what we are trying to achieve with the network.

4. 4.

   True or False: Implementing the network in one go is more effective than a staged implementation.

   • True
   • False

   Hint

   Think about flexibility in design.

5. 5.

   Design a rain gauge network for a mountainous region with significant rainfall variability. Outline the number of gauges needed and the rationale behind your placements.

   Hint

   Keep in mind the recommended density for mountainous regions.

6. 6.

   A new rain gauge is installed, but initial readings show a discrepancy with nearby gauges. Use double mass curve analysis concepts to evaluate the data consistency.

   Hint

   What does a break in the curve signify?