A snowdrift is read as an obstacle built up quietly over time, blocking the way forward. Being stuck in one stands for feeling stalled; digging out, for steady effort to get moving again.
Does the traditional reading fit your dream, or did it mean something else to you?
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.