We don't have synonyms for dry wells yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are dry well, dry cells and dry cell.
(n) :
(civil engineering, construction) An underground structure (for example, a pit filled with gravel) that disposes of unwanted water (most commonly surface runoff and stormwater and in some cases greywater) by holding it and dissipating it into the groundwater.
(n) :
Used other than figuratively or idiomatically: see dry, well. Any kind of well that is dry.
(n) :
(civil engineering, construction) An underground structure (for example, a pit filled with gravel) that disposes of unwanted water (most commonly surface runoff and stormwater and in some cases greywater) by holding it and dissipating it into the groundwater.
(n) :
Used other than figuratively or idiomatically: see dry, well. Any kind of well that is dry.