These examples are from the Cambridge English Corpus and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors.
The force of the tides gives rise to overfalls and tidal races which can occur at different stages of the tide.
There is none of the danger of the heavy overfall of a following sea.
The dam measures 793 ft in length, with an overfall area that is 169 ft long.
The overfall area is faced on the downstream side with cut granite, and earthen embankment on the upstream side.
The maximum height of masonry above rock is 82 feet and the overfall at the spillway, 61 feet.
The overfall area is topped with cut granite, and originally had wooden flashboards held in by pins.
There is a granite-lined overfall area 100 ft long, which was originally topped by flashboards.
The dam is 1376 ft in length, with a centered overfall area.
Until 2011, the major outflow from the pond was an overfall in the extreme southern corner of the pond.
The masonry has a maximum height of 82 feet above rock and the overfall at the spillway is 61 feet.
The dam's overfall spillway has five radial gates with a combined maximum discharge of 137,000 cuft/s.
The dam's overfall spillway has five radial gates with a combined maximum discharge of 141,000 cuft/s.
The central portion is an overfall spillway.
In that formulation flow over the free overfall illustrated in figure 2 was considered.