Thank you Dean Djokic for the quick answer.
I'm sorry I couldn't explicate my question understandable, so I try it again to make my question hopefully comprehensible.
From my DEM I could identify all depressions (Depression Evaluation) as polygon layer with all necessary information like FillArea, FillVolume, DrainArea etc. . I also calculated a raster layer with the depth of these depressions by subtracting the DEM from the filled DEM. With the raster layer I can now represent the depths of each depression.
The FillVolume, which I got from the Depression Evaluation, is the maximum volume/the potential retention volume of each depression. So if the rainfall rate on the drainage area is less than the potential retention, the water can be stored in the depression. If the rainfall rate on the drainage area is higher than the potential retention, the water will overflow the depression.
Now I want to do it the other way around. I have a rainfall event with a rainfall rate of 60 mm/h. With this rainfall rate, the runoff coefficient and the drainage area I can calculate a volume for each depression which will be filled. On base of this rainfall event/volume I would like to get a new polygon layer for each depression with the area of the depression which got filled. This is what I want to get..
I hope it is now understandable.
Thank you again