We don't have synonyms for ponded yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are ponder, bonded and pounded.
(n) :
The accumulation of water on a flat roof, potentially leading to leakage.
(n) :
(construction, hydrology) The excessive accumulation of water in low-lying areas, remaining 48 hours after the end of rainfall under conditions ordinarily conducive to drying.
(n) :
The accumulation of water on a flat roof, potentially leading to leakage.
(n) :
(construction, hydrology) The excessive accumulation of water in low-lying areas, remaining 48 hours after the end of rainfall under conditions ordinarily conducive to drying.