Valencia’s away game against the sixth-tier side was to be played in Parla, located 15 miles from the Spanish capital of Madrid, on Wednesday.
The match has been rescheduled to 6 November and will be played at the same venue.
Second division Levante’s trip to fourth-tier Pontevedra in north-west Spain has been pushed back to next week, as has the tie between Xerez, also in the fourth tier, and AD Ceuta, of the third.
Thursday’s fixtures were also affected, with fourth-tier Ejea versus third-tier Hercules de Alicante postponed by a week and sixth-tier Manises’ home tie against top-flight Getafe now postponed to an undecided date.
La Liga sides Real Sociedad and Osasuna have also had their respective trips to Jove Espanol of the fifth tier and sixth-tier Chiclana postponed.
Several top-flight clubs, including Real Madrid and Barcelona, expressed condolences to the victims of the floods.
“Barcelona wishes to express its sympathy to the relatives of the victims and our solidarity with the counties in Valencia and parts of Albacete and Andalusia affected by the torrential rain,” Barcelona said in a statement.