 The cyclone submerged Funafuti and sources of drinking water were contaminated as a result of the system's storm surge and fresh water flooding.Prior to the formation of Cyclone Pam, flooding from king tides, which peaked at on 19 February 2015, caused considerable road damage across the multi-island nation of Tuvalu.Between 10 and 11 March, tidal surges estimated to be associated with the cyclone swept across the low-lying islands of Tuvalu.