Root Cellar Ceiling Leaking

[dschafer1]

Hi All,

I have a house circa 1915 which has a two-room root cellar under the back porch floor decking. The ceiling/roof of the root cellar is the actual flooring of the porch. When it gets particularly rainy & windy I get water coming in from the floor deck and stored items get wet. Thanks in advance for anyone who can offer a proper, permanent solution for this. (photos attached)