Water in a dream has plenty of interpretations, so try to recall as many details as you can. A brook or a river symbolizes life changes. If you see stones and branches in a current, it indicates that you will soon get new knowledge and experience which will definitely be useful.
To draw water (e.g. from a well) promises income. To drink water signifies you may come up with interesting ideas, which will help you at your work or studies.
Rain indicates that you will get everything you want, but not at once. Be patient and you will surely be rewarded .