NOTES:

What is "pool level"?
Under normal conditions, the locks along the lower Murray River cause the river to form into a series of pools between the locks. The pool level is the height above sea level of the surface of the water in those pools. To allow river users to see whether the river level is above or below normal, the river levels in the RMBOA graphs are normalised around the pool level. That is, if the river river is the normal pool level, it will show as 0 metres. If it is above the normal level, the reading will be positive and if it is below the normal level, it was be shown as being negative.

What Does The "Depth Profile" show?
The depth profile represents the normalised depth of the river along its length in South Australia. If all the levels along  the river were at pool level, it would be a straight line as the normal  height variations would be removed. The vertical lines that are usually seen on the graph represent the weirs. Although in a flood, the water level above and below each weir is the same, the profile graph will show a large jump as there is a large difference between the normal level below the lock and the current level.

Slumping
The potential for riverbank and levee slumping continues below Lock 1. Care should be taken when mooring to look for signs of potential slumping.