In the 1700s, the costs of drainage were:
bricking and draining when resettling the farms and estate in 1775: £800
Cobb Sand embankment £8,000
at the point adjoining Paull Holme £100
Average rent totals for areas where drainage work had been carried out were high in 1780:
Keyingham estate £1,396 (19s 3½d per acre)
Paull estate £1,369 (£1 0s 4d per acre)
Burton Pidsea estate £1,279
Thorngumbald £1 0s 3d per acre
By contrast, those areas which had not seen the work carried out were significantly less valuable:
Withernwick 15s per acre
Sproatley 10s per acre
The benefits of this work in the 18th Century continue to be a vital safeguard to protect Holderness from flooding, and to boost the farming economy in this region.
The extent of the area which would otherwise be lost to the river or at risk of flooding can be seen in the geological map below, with the broad swathe of Holderness Plain made up of silty, muddy sediment representing past incursions by the Humber marked as alluvium. An impressive achievement for the landscape engineers almost 300 years ago!