The Noyyal check dam at Puthukkadu faces erosion and heavy-rain damage risks after nearby desilting. Officials plan retaining-wall repairs. Noyyal check dams near Coimbatore face erosion risks after desilting work, with officials inspecting Puthukkadu and planning repairs. Environmentalists have raised concerns over non-technical river rejuvenation work that has allegedly caused erosion of the riverbanks near the Puthukkadu check dam across the Noyyal river.