Okla. Stat. tit. 82 § 105.6
When the Board determines the best interests of the claimants to the use of water from a stream system will be served by a determination of all rights to the use of water of such system, the Board may institute a suit on behalf of the state for the determination of all rights to the use of such water and shall diligently prosecute the same to a final adjudication. The cost of such suit, including the costs on behalf of the state, shall be charged against each of the parties thereto in proportion to the amount of water rights allotted. Provided that after the effective date of June 10, 1963, neither the bringing of such suit nor an adjudication in such a suit shall be a condition precedent to the granting of permits and licenses as authorized by this act.
Okla. Stat. tit. 82, § 105.6