Prescribed burn-off to be carried out at Millbrook Reservoir today FIRIES are conducting a prescribed fire near the Millbrook Reservoir in the Adelaide Hills - a day after several bushfires ignited across South Australia. The 20ha burn is planned in the western area of the SA Water-managed reserve, east of Tilmouth today, weather conditions permitting. Cudlee Creek is the closest residential area to the planned activity. Motorists are advised to slow down as smoke could affect Gorge Rd and other nearby thoroughfares. The Environment Department is conducting the burns on behalf of the Mount Lofty Ranges Fire Cooperative. The operation is part of a statewide program of prescribed (preventative) burning in high-risk public land areas this spring and is expected to be completed by 5pm today. Firefighters battled several blazes across SA yesterday, on a day the CFS had warned would be "very dangerous," with the mercury soaring to 35C in the metropolitan area. Volunteers were on high alert with hot, northerly winds providing perfect fire conditions across much of the state. But weather conditions have since improved.