The Water Forge was one of many elemental Reaver forges that were supposed to make an appearance in Legacy of Kain: Soul Reaver.The forge was a special chamber where Raziel would be able to imbue the Wraith blade with elemental Water forge the Water Reaver enhancement. Due to the time constraints, all of the other forges were cut and only the Fire forge remained in the final version, with both the Water Reaver and Water forge removed.
Despite its removal, the Water Reaver enhancement itself is present in the Debug menus of the retail game and can be activated through these means. The forge itself is not present in any capacity in the retail or beta version of the game, however, it was present in the alpha version of the game publicised in 2020, which revealed that the forge was originally found in the Drowned Abbey, in place where Fire Forge would be found in the retail version.
The Water Forge had the same layout as the other forges with one prolonged corridor and forge at the end. There was a large vortex of water being formed in the ceiling and pouring into a hole in the ground. By plunging the Reaver into this stream, Raziel would have obtained the Water Reaver. Raziel would need to imbue the Reaver by plunging it into waterfalls, fountains and spouts found in the world.
In the final version of the game, the Water forge had been replaced with Fire Forge instead.