TgJ Is65:8 :כְמָא דְאִשתְכַח נֹחַ זַכַי בְדָרָא דְטוֹפָנָא‏ : as much as Noah was found righteous in the generation of the Flood
See the entire entry for ṭawpān/ṭōp̄ān, ṭawpānā/ṭōp̄ānā n.m. deluge