> 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/introduction-1/channels/hyd-sed-lte.cha/dp.md).

# dp

Channel depth

The channel depth is defined as the depth of the channel from the top of the channel bank to the channel bottom. It is calculated by QSWAT+ using a regression equation relating the channel depth to the drainage area of the channel.