The water level of the canal is controlled by switches on the walkways overhead. If Luke can press all the switches, the water will rise to its normal level. However, this being the Azran sanctuary, the system has been designed with a devilish twist. Most of the light walkway panels will fall almost as soon as he steps on them. It's only safe for him to wait on the ones at junctions and corners.
Help Luke raise the water by guiding him across the walkways to the exit, activating every switch on the way.
From the starting position, there are three directions Luke can go: upwards, downwards or right.
Start by sending him downwards and onto the switch in the bottom-left corner. Taking either of the other routes would eventually lead him to a dead end.
After following Hint 1, continue guiding Luke until he reaches a junction.
From there, he can either go upwards or to the right. Be careful with your choice. If you send him along the wrong path, he'll be unable to activate all the switches on the left-hand side.
If you sent Luke along the correct path at the end of Hint 2, he should be standing on a switch near the bottom-right corner. You can get him to reach the goal by guiding him upwards from here, but sadly, you still have to step on the other switches first.
Have him head downwards instead, then follow the path round to the top of the map.
Continuing from Hint 3, it's time to head left. Once Luke gets to the top-left corner, have him go down, then to the right, stepping on the remaining three switches on the way to the goal.