If stored waters are released from a reservoir and are designated for use or storage downstream by a specified user legally entitled to receive the water, it shall be unlawful for any other person to divert, store, appropriate, use, or otherwise interfere with the passage of the waters that are designated for downstream use or storage. Each owner or operator of a reservoir and dam on the stream between the point of release and the point of designation shall permit the free passage through the reservoir and dam of all such released waters in transit.
30 Tex. Admin. Code § 297.94