Idaho Code § 50-1804
In lieu of such stock so assigned to such city, it shall issue to such assignors a city water certificate, showing such assignor to be entitled to all the water to which he was originally entitled under the certificates [of such canal or irrigation companies, which municipal water certificates] shall be signed by the mayor and clerk of the city, with the corporate seal thereof affixed, guaranteeing to the owner or holder thereof his full property rights concerning the use and benefit to be derived from the water he originally enjoyed under such assigned certificate. Such city water certificate issued in accordance herewith and city ordinances passed in pursuance hereof, shall be prima facie evidence in all courts of law and equity, of the right of the owner and holder thereof to the ownership, use and benefit of the water guaranteed thereby, subject only to the power of the city in which the same is used to convey, control, distribute and apportion the same in accordance with the provisions of this chapter.
Idaho Code § 50-1804