C.R.S. § 37-68-102: When compact operative.

(1) Said compact shall not become operative unless and until the same has been ratified by the legislature of each of the signatory states and consented to by the congress of the United States, in the manner provided by, and in conformity with, said compact, and the governor of the state of Colorado shall give notice of the approval of said compact, by this act, to the governor of the state of New Mexico and to the president of the United States.

(2) The amendments to said compact shall not become operative unless and until the same shall have been ratified by the legislature of each of the signatory states and consented to by the congress of the United States, in the manner provided by, and in conformity with, said compact, and the governor of the state of Colorado shall give notice of the approval of said compact, by this article, to the governor of the state of New Mexico and to the president of the United States.