Colo. Rev. Stat. § 37-80-103
The state engineer shall perform all duties imposed upon him by law and, when called upon by the governor, shall give his counsel and services to any state department or institution. He shall be allowed all actual traveling and other necessary expenses and the actual cost of preparing necessary maps and drawings, which actual expenses shall be paid by the department or institution requiring his services.
C.R.S. § 37-80-103
For the state engineer as head of the division of water resources, see §§ 24-1-124(3)(a) and 24-33-104(1)(e); for fees collected by state engineer, see § 37-80-110; for compensation of state engineer, see § 37-80-113; for powers of the state engineer to enforce laws concerning groundwater, see § 37-90-110; for duty of state engineer to appoint water division engineers, see § 37-92-202.