When an application is received in a stream system where all of the unappropriated water has been withdrawn by the United States under the provisions of 82 O.S. 1981, §105.29, for the economic justification of a water supply project, the application and fee shall be rejected and returned to the applicant by certified mail with a letter of explanation as to why the application was rejected.
Okla. Admin. Code § 785:20-1-8