Create Thiessen Polygons (Analysis) in ArcGis

Creates Thiessen polygons from point features.

Each Thiessen polygon contains only a single point input feature. Any location within a Thiessen polygon is closer to its associated point than to any other point input feature.
Usage
This tool is used to divide the area covered by the input point features into Thiessen or proximal zones. These zones represent full areas where any location within the zone is closer to its associated input point than to any other input point.

Thiessen proximal polygons are constructed as follows:
All points are triangulated into a triangulated irregular network (TIN) that meets the Delaunay criterion.
The perpendicular bisectors for each triangle edge are generated, forming the edges of the Thiessen polygons. The location at which the bisectors intersect determine the locations of the Thiessen polygon vertices.
The outside boundary of the output Thiessen polygon feature class is the extent of the point input features plus an additional 10%. If the Extent environment is set to a specific extent window, this tool tool will use the environment setting to set its outside boundary.

[devakithankam]

Rainfall runoff relationship how? Please add that too

[devakithankam]

What is that model buider set-up? Please make a vedio in this