A natural Geo-Hydrological unit of land, which collects water and drains it through a common point by a system of streams is called _____.

Watershed

The correct answer is: **Watershed**

A watershed is a natural Geo-Hydrological unit of land that collects water and drains it through a common point, typically by a system of streams, rivers, or other watercourses. It represents an area where all the water that falls within it eventually drains to a common outlet, such as a river, lake, or ocean.