The waters of Gatun Lake were rushing to regain the freedom denied them by the building of the locks.
By a lock system lifting vessels up to Gatun Lake (a height of 85 feet), an immense amount of excavation was saved.
Gates six and seven are now closed, and the water allowed to fill the third lock until we are up to the level of Gatun Lake.
We were on the level of the wide island dotted expanse of the Gatun Lake.
Gatun Lake was made by a great dam across the Chagres river.
There are three pairs of these locks and they lift the vessel to Gatun Lake, which is eighty-five feet above sea level.
The water fills the lock through openings in the floor, and the water itself comes from Gatun Lake.
The regulation of the water level in Gatun Lake is no small task, for the Chagres is one of the world's moodiest streams.