DCHP-1 Online
lumber dam 
an expanse of quiet water where logs, often retained by a boom, are penned till needed.
See also: pond (def. 3)
- 1872 Here was a lumber dam, and a large crew of men engaged in "driving" the timber brought down the lake in large rafts.
- 1921 (1923) "I am going down to Grand'Mere next week . . . to work on the lumber dam."
- 1872 Here was a lumber dam, and a large crew of men engaged in "driving" the timber brought down the lake in large rafts.