# hydrology.wet

| Field                                                                                                                               | Description                                                                       |  Type  |   Unit   | Default | Range |
| ----------------------------------------------------------------------------------------------------------------------------------- | --------------------------------------------------------------------------------- | :----: | :------: | :-----: | :---: |
| [name](https://swatplus.gitbook.io/io-docs/~/changes/GiVD5ID0WVyRIAumaMy2/introduction/wetlands/hydrology.wet/name)                 | Name of the wetland hydrology record                                              | string |    n/a   |   n/a   |  n/a  |
| [hru\_ps](https://swatplus.gitbook.io/io-docs/~/changes/GiVD5ID0WVyRIAumaMy2/introduction/wetlands/hydrology.wet/hru_ps)            | Fraction of HRU area at principal spillway (when surface inlet riser flow starts) |  real  |   frac   |    0    |       |
| [dp\_ps](https://swatplus.gitbook.io/io-docs/~/changes/GiVD5ID0WVyRIAumaMy2/introduction/wetlands/hydrology.wet/dp_ps)              | Average depth of water at principal spillway                                      |  real  |    mm    |    0    |       |
| [hru\_es](https://swatplus.gitbook.io/io-docs/~/changes/GiVD5ID0WVyRIAumaMy2/introduction/wetlands/hydrology.wet/hru_es)            | Fraction of HRU area at emergency spillway (when starts to spill into ditch)      |  real  |   frac   |    0    |       |
| [dp\_es](https://swatplus.gitbook.io/io-docs/~/changes/GiVD5ID0WVyRIAumaMy2/introduction/wetlands/hydrology.wet/dp_es)              | Average depth of water at emergency spillway                                      |  real  |    mm    |    0    |       |
| [k](https://swatplus.gitbook.io/io-docs/~/changes/GiVD5ID0WVyRIAumaMy2/introduction/reservoirs/hydrology.res/k)                     | Hydraulic conductivity of the wetland bottom                                      |  real  |   mm/hr  |   0.01  |       |
| [evap](https://swatplus.gitbook.io/io-docs/~/changes/GiVD5ID0WVyRIAumaMy2/introduction/wetlands/hydrology.wet/evap)                 | Wetland evaporation coefficient                                                   |  real  |    n/a   |   0.70  |       |
| [vol\_area\_co](https://swatplus.gitbook.io/io-docs/~/changes/GiVD5ID0WVyRIAumaMy2/introduction/wetlands/hydrology.wet/vol_area_co) | Volume surface area coefficient for HRU impoundment                               |  real  |    n/a   |   1.0   |       |
| [vol\_dp\_a](https://swatplus.gitbook.io/io-docs/~/changes/GiVD5ID0WVyRIAumaMy2/introduction/wetlands/hydrology.wet/vol_dp_a)       | Volume depth coefficient for HRU impoundment                                      |  real  |    n/a   |   1.0   |       |
| [vol\_dp\_b](https://swatplus.gitbook.io/io-docs/~/changes/GiVD5ID0WVyRIAumaMy2/introduction/wetlands/hydrology.wet/vol_dp_b)       | Volume depth coefficient for HRU impoundment                                      |  real  |    n/a   |   1.0   |       |
| [hru\_frac](https://swatplus.gitbook.io/io-docs/~/changes/GiVD5ID0WVyRIAumaMy2/introduction/wetlands/hydrology.wet/hru_frac)        | Fraction of HRU that drains into wetland                                          |  real  | fraction |   0.5   |       |
