If it was full up, it predicts full prosperity; if it was empty, it portends difficulties though not of your own making.
Partially full suggests sufficient resources for your requirements, and if the reservoir was in the process of filling, the wind of change will soon be blowing some new opportunities your way. [1]
(2) Running water may symbolize emotion; so, a calm stretch of still water may represent an untroubled state of tranquillity, or the emotionally virginal state of a (young) person whose emotions have not yet been roused. [2]
2. Feelings of being drained of energy, extremely fatigued (to see an empty reservoir).
3. Wealth and prosperity. [5]
If it appears to be empty, the dreamer may have expended all available emotions on others. [6]
being filled up with water: many are depending upon you for their basic welfare.
clean: plenty of money to enhance your wardrobe.
half-filled: declining business needs emotional input.
empty: destruction of al available nurturance. [12]