Iowa Code Title X. Financial Resources [Chs. 421-454] § 438.13. Basis of valuation and assessment

The said property shall be valued at its actual value, and the assessments shall be made upon the taxable value of the entire pipeline property within the state, except as otherwise provided, and the actual and taxable value so ascertained shall be assessed as provided by section 441.21; and shall include the rights-of-way, easements, the pipelines, stations, grounds, shops, buildings, pumps, and all other property, real and personal exclusively used in the operation of such pipeline. In assessing said pipeline company and its equipment, the department of revenue shall take into consideration the gross earnings and the net earnings for the entire property, and per mile, for the year ending December 31 preceding, and any and all other matters necessary to enable the department to make a just and equitable assessment of said pipeline property.