Section 37.03.12.035 - MEASURING DEVICES AND CONTROL WORKS01.Installation and Maintenance of Measuring Devices and Control Works. In addition to measuring devices or control works specifically described in the listing of the water right, each water user, except small domestic and stock water users from ground water, shall, at the water user's expense, install and maintain measuring devices and control works of a type acceptable to the director, at all points of diversion and any other points, as determined necessary by the director for the proper administration of the use of water. The director may prohibit or prevent the diversion of water by a water user who refuses or fails to comply with this rule in accordance with the provisions of Chapter 7, Title 42, Idaho Code.02.Access to Diversion Works. Water users shall provide the water district staff continual access to all diversion works, measuring devices and control structures, except ground water diversions for small domestic and stock water uses.03.Diversions Which May Be Exempt. Diversions below the Chilly Bridge and above the Mackay Reservoir that divert water from the Big Lost River, whose place of use is within the flood plain of the Big Lost River as determined by the director, may be exempt from the requirement for measuring devices and control works with the approval of the director. Flow rates through exempt diversions will be estimated by the watermaster for accounting purposes by assuming the recorded flow rate of the water right is being diverted.Idaho Admin. Code r. 37.03.12.035