NHER 26901 (Cropmark and Earthwork record) - Post medieval earthwork bank

January 2001. NMP.
Two separate sections of earthwork bank at TF 73 44 and TF 74 43 are visible on 1945 APs (S1). They both enclose the northern ends of fields and form a boundary between the agricultural land and saltmarshes. The banks are also visible on the 1971 (S2) and 1972 (S3) APs. They would appear to be part of the local flood defences/land reclamation attempts. The banks are depicted as earthworks on the OS 2nd edition map (S8), which suggests they are pre-20th century. Further evidence of the post-medieval date is the fact that they can be seen (in slightly simplified form) on a map of the area from 1826 (S4).
A. Hunt (NMP), 25 January 2001.

May 2002. Norfolk NMP.
An additional stretch of bank can be seen between TF7400 4387 and TF7404 4387. It is visible on Hunting Survey aerial photographs from 1969 (S6-7). This is marked on the 2nd edition OS map (S5) as earthworks and appears to be part of the complex of local flood defences/land reclamation attempts already mapped by Suffolk CC for NMP.
Also the eastern section of the banks mapped previously by Suffolk CC forms 3 sides of an enclosure and within it there appears to be ditches visible (though they are not that clear). It seems likely that these are for drainage - a further part of this land reclamation? (Or possibly more recent?). These have not been mapped.
H. Clare (NMP), 9 May 2002.

May-November 2004. Norfolk Rapid Coastal Zone Archaeological Survey.
Inter-tidal survey (Environmental Zone 7), Context 1083:
The eastern end of a modern curvilinear sea defence bank (measuring 3m wide and 1.8m high) was observed. Located on the southern edge of Thornham saltmarshes, it was aligned east-to-west and was recorded between TF 73712 44016 and TF 73768 43971.
See assessment report (S9) for further details.
The associated archive has been deposited with the Norwich Castle Museum (NWHCM : 2017.421).
J. Allen (NLA), 14 April 2005. Amended by P. Watkins (HES), 21 July 2019.