zfs recover

I delete a zfs by command rm -r /mountpoint. But after then, I could see a space used in the zfs, I got a snapshot and used send/receive option in another zfs, but I can't see the information erased. The actual properties values are:

poolbk/data  used                  80.9G                  -

poolbk/data  usedbychildren        0                      -

poolbk/data  usedbydataset         31K                    -

poolbk/data  usedbyrefreservation  0                      -

poolbk/data  usedbysnapshots       80.9G                  -

And the FS looks:

Filesystem             Size   Used  Available Capacity  Mounted on

poolbk/data       95G    31K        13G     1%    /mnt

The snapshot show 80.9G referenced, but I don't know, how I can access to that data. Do you know if there some procedure o method to do it?