Arvada III was the third planet of the Arvada system and the site of a Federation colony.

In the 2330s, Arvada III was the site of a major disaster and the young Beverly Howard and her grandmother, Felisa, were present to help survivors. Traditional medical supplies quickly ran low, and Felisa learned how to use herbs and roots as medication despite the fact she was not a physician. She passed this knowledge down to Beverly, inspiring her to a career in medicine. (TNG: "The Arsenal of Freedom")