Water Raise Switch

Water Raise Switch is an object in Banjo-Kazooie used for raising the water level in certain areas. There are three of them altogether. One is inside Mumbo's Hut near Mad Monster Mansion's entrance. The second is opposite Rusty Bucket Bay. The third is in the first room after the 480 note door, however unlike the other switched this one only works for 30 seconds at a time.

Trivia
A wire mesh divides the Mad Monster Mansion puzzle area and the Rusty Bucket Bay puzzle area, it is only possible to reach and smash this if only the first switch has been pressed, after the second switch has been pressed the mesh goes under water leaving it indestructible.