To dream of a swamp represents negative qualities that you possess. You are feeling vulnerable and apprehensive. The dream may also be a play on the word 'swamped.' Perhaps some aspect in your life has you feeling overwhelmed and pressured.
To dream that you are walking through a swampy area warns of an upcoming hardship or obstacle. Unfavorable developments may occur in a relationship. Others will influence you negatively with their actions and words.
On a less negative note, walking through a swamp implies that you will encounter wealth and happiness via risky and mysterious methods.