Section 37.03.12.055 - WATER USAGE01.Incidental Stock Water. When stock water is not specifically included for a water right that includes irrigation, a portion of the quantity described for irrigation use may be diverted and used, from the same point of diversion and at the same place of use as the irrigation use, for purposes of maintaining a reasonable water supply for stock watering use during the period of use for irrigation described in the water right.02.Winter (Non-Irrigation Season) Stock Water. During the non-irrigation season, from October 16 through April 30 except as modified by Rule 040.04, the storage of water in Mackay Reservoir is superior to all rights from the Big Lost River with points of diversion downstream from Mackay Dam, subject to minimum release. a. Winter stock water can be called for and delivered pursuant to the list of water rights if it does not interfere with storage in Mackay Reservoir.b. A right holder calling for delivery of stock water must have access to a diversion point and delivery system to convey the right to the place of use recorded in the list of water rights. If the headgate and delivery system are controlled by an entity other than the water user, the watermaster will only deliver the water with the concurrence of the owner of the headgate and delivery system and then only when such delivery does not constitute unreasonable waste as determined by the director.Idaho Admin. Code r. 37.03.12.055