Revised Local Reference (RLR) Diagram for BOULOGNE

Station ID: 471

RLR diagram based on the information in the datum section below

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Datum information

Add 2.090m to data values 1941-1942 to refer to RLR
Add 2.090m to data values for 1942 to refer to RLR
Add 2.090m to data values 1973 onwards to refer to RLR
RLR is 12.769m below primary benchmark N.BC - 15

Data

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Revised Local Reference (RLR) Diagram for BOULOGNE

Station ID: 471

Datum information