Rainfall Estimation in QGIS: Thiessen (Voronoi) Polygon Method

Welcome to GIS Gallery!

In this tutorial, I’ll walk you through the process of calculating the mean total rainfall for Madhya Pradesh using the Thiessen Polygon (also known as Voronoi Polygon) method in QGIS. Thiessen Polygons allow us to estimate rainfall distribution across an area by creating polygons around each rainfall station based on proximity.

In this video, you will learn:

How to import and prepare rainfall point data in QGIS.
Step-by-step instructions to create Thiessen Polygons (Voronoi Polygons).
How to calculate mean total rainfall for each polygon using the Thiessen method.

📌 Timestamps:
0:00 Intro
0:32 Introduction to Process
1:35 Importing Rainfall Point Data into QGIS
4:00 Creating Thiessen (Voronoi) Polygons
5:52 Calculating Mean Total Rainfall for Each Polygon
8:08 Visualizing and Analyzing Results

🔔 Subscribe to GIS Gallery for more GIS tutorials and content

👍 If you found this video helpful, please give it a thumbs up and share it with others!