9178aa5b__of_the_Dead___Darksiders_Wiki__How_to_Acquire
[Number] 06 [Location] The Drenchfort [Requirements] None [How to Acquire] 
After traveling to the far west part of The Drenchfort and pulling the lever, Death will need to journey back to the main chamber. The water flow takes a detour at the northwest part of the dungeon. With the water filling part of the area, Death will be able to reach a large broken pipe that was previously too high. The page is found inside.
The Book of the Dead - Darksiders Wiki
How to Acquire