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description: Minimum value of the USLE C factor for water erosion
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# usle\_c\_min

The minimum C factor can be estimated from a known average annual C factor using the following equation (Arnold and Williams, 1995):

$$C_{USLE,mn} = 1.463 * ln⁡[C_{USLE,aa}] + 0.1034$$

where $$C_{USLE,mn}$$ is the minimum C factor for the land cover and $$C_{USLE,aa}$$ is the average annual C factor for the land cover.&#x20;

#### References

> Arnold and Williams (1995)
