Down by the riverStan Kozak fills his bucket with water as he does some repairs to the skating rink behind the River Run Centre on Saturday morning. The fixing was followed up with watering as Kozak and his son, Tom, flooded the rink on what was a frosty day in the city. Warmer temperatures are back, as a high of -1 C was expected for Thursday and Friday. A high of -6 C is expected for Sunday when Guelph’s annual Winterfest event takes place.