A levee holds back water that would otherwise spill over. It is traditionally read as the effort of containing strong emotions, and how solid it looks as how well you manage.
Where in your waking life have you met something like this lately?
My Cosmic Code has a private dream journal. Write a dream down and the app picks out the symbols in it, shows what dream books say about them and, over time, which words recur across your entries. The journal is stored on your device only.