Colorado Revised Statutes Title 32. Special Districts § 32-11-529. Special obligation securities

(1) The district may issue as special obligations any of the following types of district securities, in anticipation of net pledged revenues; but not under any circumstances under their terms and the proceedings authorizing their issuance, in anticipation of taxes nor in anticipation of gross pledged revenues:

(2) Such special obligation district securities may be payable from, secured by a pledge of, and constitute a lien on net pledged revenues.