What is the name of the area from which surface runoff is carried away by a single drainage system?

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Multiple Choice

What is the name of the area from which surface runoff is carried away by a single drainage system?

Explanation:
The main idea is the area that drains to a single outlet through a drainage network. This region is called the watershed. It encompasses all the land where rainfall and runoff will flow toward one common point via streams and channels, bounded by high ground that separates it from neighboring drainage areas. Within a watershed, every drop of water ultimately travels through the same drainage system to that outlet. While basin, catchment, and drainage area are related terms used in similar contexts, watershed is the term that best matches the idea of a distinct area contributing to a single drainage outlet.

The main idea is the area that drains to a single outlet through a drainage network. This region is called the watershed. It encompasses all the land where rainfall and runoff will flow toward one common point via streams and channels, bounded by high ground that separates it from neighboring drainage areas. Within a watershed, every drop of water ultimately travels through the same drainage system to that outlet. While basin, catchment, and drainage area are related terms used in similar contexts, watershed is the term that best matches the idea of a distinct area contributing to a single drainage outlet.

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