1874 - Blue Pool dam re-constructed.
1928 - ... the Pipe line conveying water from The Blue Pool to the China Sugar Refinery ...
1929 - LegCo
Chinese settlement began to the west of the [Wong Nei Chung] valley. The water supply for these early settlers came from the fine mountain-stream which gives the valley its name, and which makes its way into the harbour through what is now known as the Bowrington Canal. The so-called Blue Pool in this stream provided a small storage; and it is interesting to note that during the recent water emergency this pool, which was reconstructed by the city waterworks in 1874, was again brought into use and dug out, after being completely silted up in the course of the intervening years. Moreover, even when the drought was at its worst, the Wong Nei Chung stream never failed to flow.
Wong Nai Chung 黃泥涌, lit. "yellow mud stream"