> For the complete documentation index, see [llms.txt](https://swatplus.gitbook.io/io-docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://swatplus.gitbook.io/io-docs/theoretical-documentation/section-4-erosion.md).

# Section 4: Erosion

<figure><img src="/files/TPvXwkGuJK4b71FVTQu8" alt=""><figcaption></figcaption></figure>

Transport of sediment, nutrients, and pesticides from land areas to water bodies is a consequence of weathering that acts on landforms. Soil and water conservation planning requires knowledge of the relations between factors that cause loss of soil and water and those that help to reduce such losses.

The following five chapters review the methodology used by SWAT+ to simulate erosion processes.