> For the complete documentation index, see [llms.txt](https://help.fielddoc.org/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://help.fielddoc.org/essentials/model-outputs.md).
# Model Outputs
{% hint style="warning" %}
FieldDoc has released an updated Model feature.
The model output feature will be officially deprecated and retired around September 30, 2026. After this date, the legacy interface will no longer be accessible and model inputs/outputs may be inaccessible.
FieldDoc is transitioning all users to the new **Models** tab, which offers expanded features and functionality.
{% endhint %}
***
## Model Outputs
To activate a model, you must complete the required input fields, which are determined by the **activity type** associated with the record. For most Adapted CAST models, the only required input is the **extent** in acres. However, we recommend reviewing all available input fields to ensure your estimate is as accurate as possible.
Keep in mind that the **model output view** will vary depending on the activity type linked to the record, as different practices may produce different types of reduction estimates.
## Models
FieldDoc supports a growing library of model calculators. For detailed information on the supported models, we recommend reading the associated model documentation.
* [Adapted Chesapeake Nutrient and Sediment Load Reduction Model](/resources/models/adapted-chesapeake-nutrient-and-sediment-load-reduction-model.md)
* [In-Stream load reduction estimates](/resources/models/in-stream-load-reduction-estimates.md)
* [Shoreline restoration load reduction estimates](/resources/models/shoreline-restoration-load-reduction-estimates.md)
* [Stormwater performance standard - treatment depths other than 1-inch](/resources/models/stream-restoration-load-reduction-estimates-protocols-1-5.md)
* [Stream restoration load reduction estimates (Protocols 1 -5)](/resources/models/stream-restoration-load-reduction-estimates-protocols-1-5.md)
---
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