> 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/getting-started/introduction-to-models.md).
# Introduction to Models
FieldDoc offers a curated set of analytical models to help you estimate the environmental impact of your conservation and restoration activities.
Our team integrates established, peer-reviewed models from trusted sources. When needed, we also build or connect to external APIs to generate dynamic, location-specific impact estimates.
## Models Overview
FieldDoc offers a curated set of analytical models to help you estimate the environmental impact of your conservation and restoration activities. Our current lineup covers parameters such nutrient and sediment load reductions and carbon sequestration gains.
FieldDoc integrates established, peer-reviewed models from trusted sources. When needed, we also build or connect to external APIs to generate dynamic, location-specific impact estimates.
{% hint style="warning" %}
**An important note about model behavior.**
Models are mathematical simulations of the real world that represent how various changes or actions could affect ecosystems. These simulations are not a perfect forecast of on-the-ground outcomes. Due to variations among model techniques and versions, FieldDoc's results may differ from those generated by other systems.
Do not use FieldDoc model outputs for legal compliance. FieldDoc models are only intended to provide additional context and insight about conservation and restoration activities.
{% endhint %}
## Available Models
### Adapted Chesapeake Nutrient and Sediment Load Reduction Model
Estimate load reductions based on Phase 6 best management practice isolation run outputs provided by the Chesapeake Bay Program.
### COMET-Planner
Estimate the carbon sequestration and greenhouse gas impacts of NRCS conservation practices for initial planning purposes.
### National Water Quality Model
Estimate potential nutrient and sediment load reductions produced by best management practices (BMPs) supported by the EPA's Pollutant Load Estimation Tool (PLET).
### Shoreline Restoration Load Reduction Estimates
Estimate load reductions using data and algorithms from the 2019 Shoreline Management Expert Panel Report.
### Stormwater performance standard - Treatment depths other than 1 inch
Estimate nutrient and sediment load reductions using data and algorithms from the October 26, 2020 Consensus Recommendations to Improve Protocols 2 & 3 for Defining Stream Restoration Pollutant Removal Credits.
### Stream Restoration Load Reduction Estimates (Protocols 1 - 5)
Estimate nutrient and sediment load reductions using data and algorithms from the October 26, 2020 Consensus Recommendations to Improve Protocols 2 & 3 for Defining Stream Restoration Pollutant Removal Credits.
### Oyster Aquaculture
Estimate nutrient and sediment load reductions using data and algorithms from the October 26, 2020 Consensus Recommendations to Improve Protocols 2 & 3 for Defining Stream Restoration Pollutant Removal Credits.
### Virginia Runoff Reduction Method (Runoff Only)
Estimate the volume of stormwater infiltration and storage based on site-specific conditions.
---
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