The Foyle Search and Rescue (FSR) team in Derry say they dealt with 36 incidents last month.
The charity's volunteers respond to call-outs in relation to people who have entered the River Foyle or are in distress around the river.
A FSR spokesperson said its Emergency Response Team dealt with a total of 36 incidents during the month of August.
"Twelve people were brought back from the Railings or Rivers edge.
"Seventeen people who were in distress were dealt with & immediately taken to a place of safety.
"Our teams also dealt with reports of five people entering the water of which all five were rescued.
"Our Teams also had the sad task of conducting a recovery of a sixth person who had entered the water.
"Foyle Search and Rescue volunteers have been tasked by the Police Service of Northern Ireland with ongoing search & recovery operations with our colleagues from the Community Rescue Service for a person who entered the water on Sunday. Support is also being provided by Search Team North West."
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