appendix a - National Grid
appendix a - National Grid
appendix a - National Grid
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2.0 Defence Information<br />
River Great Ouse (Raised Defence – Man Made)<br />
Unique ID (Label) Easting Northing<br />
Standard of<br />
Protection<br />
(Return<br />
Period)<br />
Overall<br />
Condition<br />
Grade<br />
0520121050401R06 559504 316300 1 in 200 3<br />
River Nar (Raised Defence – Man Made)<br />
Unique ID (Label) Easting Northing<br />
Standard of<br />
Protection<br />
(Return<br />
Period)<br />
Overall<br />
Condition<br />
Grade<br />
0520121070401R08 561579 315535 1 in 50 3<br />
Key to Overall Condition Grades:<br />
Statutory<br />
Defence<br />
Level<br />
Upstream<br />
Crest<br />
Level<br />
(mAOD)<br />
Downstream<br />
Crest Level<br />
(mAOD)<br />
Not<br />
Known 7.0 7.0<br />
Statutory<br />
Defence<br />
Level<br />
Grade Rating Description<br />
Upstream<br />
Crest<br />
Level<br />
(mAOD)<br />
Downstream<br />
Crest Level<br />
(mAOD)<br />
Not<br />
Known 4.91 5.01<br />
1 Very Good Cosmetic defects that will have no effect on performance<br />
2 Good Minor defects that will not reduce the overall performance of the asset<br />
3 Fair Defects that could reduce performance of the asset<br />
4 Poor Defects that would significantly reduce the performance of the asset. Further investigation needed.<br />
5 Very Poor Severe defects resulting in complete performance failure<br />
3.0 Historic Flood Event Information<br />
Unfortunately we have no information regarding historical flooding. It is possible that other flooding may have occurred that we do not<br />
have records for. We therefore recommend you consult other organisations, such as the Local Authority or Internal Drainage Board to<br />
enquiry about any records they may have.
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