Water Code § 1123
ARTICLE 2. Reconsideration and Amendment of Decisions and Orders
The decision or order may be reconsidered by the board on all the pertinent parts of the record and such argument as may be permitted, or a further hearing may be held, upon notice to all interested persons, for the purpose of receiving such additional evidence as the board may, for cause, allow. The decision or order on reconsideration shall have the same force and effect as an original order or decision.