Paji, Aug 1: Over 10 km of beach stretches, spread over 19 beaches, in Goa face the threat of erosion, Water Resources Minister Vinod Palienkar said on Tuesday. Sea erosion and beach protection measures were being taken in popular beaches like Anju, Keri-Tiracol, Morjim in North Goa and Agonda, Betalbatim, Majorda, etc. According to the details Palienkar listed in his written reply, the most affected beaches are Betalbatim (1,320 metres), Arossim (1,190 m), Agonda (1,000 m), Keri-Tiracol (1,000 m).