R12-15-907. Calculation of Irrigation Water Deliveries

If one or more irrigation grandfathered rights receive water by a common distribution system where water is measured with an approved device or method at the point of delivery to the common distribution system, but not at a point of delivery to each irrigation grandfathered right, each irrigation grandfathered rightholder or agent shall report the water used by either of the following methods: 1. Estimate the amount of water used based on a pro rata share of the acres irrigated, or 2. Estimate the amount of water used based on a combination of the pro rata share of the acres irrigated and the consumptive use of each crop grown.