037-4 Wyo. Code R. § 4-3
a. Authorization for taking final proof of instream flow permits is set out in W.S. 41-3-1006(f). This statute states that "(I)f an application for an instream flow appropriation is approved by the State Engineer, it shall be deemed that work has been commenced and completed and beneficial use made thirty (30) days after the date of approval for purposes of W.S. W.S. W.S. 41-4-506 and proof of appropriation shall not be submitted until three (3) years thereafter."
b. The superintendent or a designated hydrographer commissioner will make an on-the-ground inspection of the segment, inspect the measuring device, and review discharge records and measurement notes for the last five years. The Wyoming Game and Fish Department may provide, or upon request submit, stream flow data to document flows. If permitted flows have not actually occurred during the period of review, an adjustment will be made by elimination of the permitted c.f.s. amount reduced to the amount which was actually present.
c. Advertising and dispensing of these proofs will be done in conjunction with other surface water proofs (see Chapter IV, Section 1 of these Regulations and Instructions).
037-4 Wyo. Code R. § 4-3