> 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/hydrology/topography.hyd.md).

# topography.hyd

| Field                                                                   | Description                                      |   Type  | Unit | Default | Range |
| ----------------------------------------------------------------------- | ------------------------------------------------ | :-----: | :--: | :-----: | :---: |
| [name](/io-docs/introduction-1/hydrology/topography.hyd/name.md)        | Name of the topography record                    |  string |  n/a |   n/a   |  n/a  |
| [slp](/io-docs/introduction-1/hydrology/topography.hyd/slp.md)          | Average slope steepness                          |   real  |  m/m |   0.02  |       |
| [slp\_len](/io-docs/introduction-1/hydrology/topography.hyd/slp_len.md) | Average slope length                             |   real  |   m  |   50.0  |       |
| [lat\_len](/io-docs/introduction-1/hydrology/topography.hyd/lat_len.md) | Average slope length for lateral subsurface flow |   real  |   m  |   50.0  |       |
| dist\_cha                                                               | Currently not used                               |   real  |      |         |       |
| [depos](/io-docs/introduction-1/hydrology/topography.hyd/depos.md)      | Deposition coefficient                           | integer |      |    1    |       |