The owner or controller of stored water shall not permit the same to overflow the banks of any stream, nor shall he or she interfere with those having a lawful right to the use of that rate of flow of the stream which would prevail in the absence of the water in transit. The rate of flow shall be determined by the executive director, and all interested parties will be notified of the rate. Water, when released for downstream use, shall be of a quality that will not affect adversely or harmfully the quality of water in the stream or in storage below.