Colorado Revised Statutes Title 39. Taxation § 39-7-107. Oil and gas lands in more than one county

(1) Whenever any oil and gas leaseholds or lands appear to be situated in more than one county, the production value is assigned to the county in which the wellhead is located.

(2) Whenever the wellheads of a group of contiguous oil and gas leaseholds or lands operated as a unit are situated in more than one county, the person making the statement required by section 39-7-101 shall assign to each wellhead that portion of the production value from the unit as is assigned by the unit agreement.

(3) Whenever unit production occurs from wellheads in more than one county, a copy of the statement required by the provisions of section 39-7-101 shall be filed with the assessor of each affected county.