A video posted on the internet by opposition activists shows bodies lined alongside what they said was the Queiq River in the rebel-held Bustan al-Qasr neighborhood of Aleppo.
The Queiq River rises in Turkey and travels through government-held districts of Aleppo before it reaches Bustan al-Qasr.
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Bitter with temperatures barely above freezing.
A 14-year-old girl was declared dead at the property before an eight-year-old boy and seven-year-old girl died in hospital.
TV presenter Keith Chegwin has died aged 60 following a "long-term battle with a progressive lung condition", his family said.