In 1382 the abbey's lands were recorded as still "inundated" (flooded), and their yearly income had fallen to 400 marks (). In 1409, 32 years after the flood, the land had still not been reclaimed, despite the abbey having spent over £2,000 (equivalent to £ million in ) in attempts to save it. Around 720 acres of land had been lost; 600 of which was in Dagenham Marsh. Various attempts were made to try to help the abbey. In 1380 the king released the abbey from certain charges. In 1384 they were given permission to "impress" (force) labourers to help improve the situation on Dagenham Marsh. The abbey was granted "various liberties in Beacontree hundred" in 1392 and 1462, and exempted from payment of "tenths" for ten years from 1409. It seems the land was never reclaimed, as during the reign of King Henry VII (1485–1509) the flooded lands were "exempted from the statute", thus "extending the jurisdiction of the Mayor of London as the conservator of the Thames".