C.R.S. § 34-50-104

Failing to mutually agree as indicated in section 34-50-103 for drainage, jointly, one or more of the said parties may undertake the work of drainage, after giving reasonable notice; and should the remaining parties then fail, neglect, or refuse to unite in equitable arrangements for doing the work or sharing the expense thereof, they shall be subject to an action therefor as specified in section 34-50-102 .