Catchwaters may take the form of concrete canals, such as in Hong Kong, where there are many.

The raft seemed to be moving along some sort of concrete canal with only a meter or two to spare on either side.

Germany will also approve, as a controllable concrete canal is preferable to an unpredictable river for efficient shipping.

It was like driving along an endless concrete canal.

Riders travel in a log-themed boat through a concrete canal filled with water.

The river was transformed from a riparian river to a concrete canal in 1968.

The water then flows along a concrete canal into a larger rectangular pool.

The Kenduskeag was caged in a concrete canal two miles long as it passed through downtown.

The building to his right, however, he noticed had a concrete canal that ran out into the sea from its lowest level.

In 2004, it was restored from a concrete canal to a more natural river.