Discuss the advantages of recording type rain gauge over non-recording type rain gauge. Explain the Thiessen polygons method of mean rainfall measurement.Describe their limitations also

Advantages of Recording-Type Rain Gauge:

1. Continuous Monitoring: It provides real-time data on rainfall intensity and duration, unlike non-recording gauges that only give total rainfall.
2. Automated Data Collection: Reduces human error and the need for frequent manual measurements.
3. Useful for Hydrological Studies: Helps in flood forecasting, water management, and research.

Thiessen Polygons Method:

This method estimates mean rainfall for an area by assigning weights to rain gauge stations using geometric polygons that represent the areas closest to each station.

Limitations:

• Recording Gauge: Expensive and requires maintenance.
• Thiessen Method: Assumes uniform rainfall distribution within each polygon, which can be inaccurate for irregular patterns.