Some other member that has done this process will be of more help finding the data.

I'm not certain where the tool puts the data, but it's probably in a Temp folder (your's, Window's, Component Based Servicing's, Distribution downloads) or in a hidden $BT folder on C:\ - I really don't know. So recently Windows 10 came out and I manually downloaded the Media Creation tool and started upgrading my PC BUT I had to turn it off and all of the data that it downloaded has taken up my small amount of space in my SSD (I only have 16 GB left) can someone please tell me where does this tool store all of it's data so I could delete it.It sounds as though you selected the Upgrade This PC option.