Wikipedia
Burz
Burz is the middle Persian name for the Indo-Iranian divinity of waters. Burz is also known as Ahura Berezant in the texts of the Avesta, and also as Apam Napat in Avestan and Vedic Sanskrit. Burz is a Yazad (Avestan: Yazata) in Zoroastrianism and later Persian mythology.
Mary Boyce suggests that the proto-Iranian Apam Napat incorporated many of the features of a proto-Indo-Iranian equivalent of *vouruna, who in turn may be the Vouru-kaša (luminous ocean) of Persian mythology.
In Persian mythology, Apam Napat has also some military aspects and is said to keep rebellion in check.