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An accumulation of water on a flat roof because of clogged or inadequate drains.
The impoundment of stream water to form a pond.
Covering the surface of newly poured concrete with a thin layer of water to promote curing.
The natural formation of a pond in a stream by an interruption of the normal streamflow.
1. The accumulation of water in a depression on an otherwise level surface.
2. The process of flooding the surface of a newly placed concrete slab with a thin layer of water to ensure continued hydration; usually requires the use of temporary dams of earth or other material around the perimeter.