# Nitrogen Dry Deposition

Dry deposition of nitrate and ammonia is input to the model for each subbasin. Average daily deposition is added to the appropriate surface soil pool.

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Table 3:1-5: SWAT+ input variables that pertain to dry deposition.

| Variable Name | Definition                                | Input File |
| ------------- | ----------------------------------------- | ---------- |
| drydep\_no3   | Daily nitrate dry deposition rate (kg/ha) | .atm       |
| drydep\_nh4   | Daily ammonia dry deposition rate (kg/ha) | .atm       |

