Springmaid Pier 960/050 RLR(1984) is 9.3m below BM 1070 A 1976
Documentation added 2011-12-20
Using NOAA data the RLR diagram has been revised. Previous Primary benchmark 1070 A 1976 12.04m above gauge datum does not feature in NOAA reports of 1990 and 2003. Current Primary benchmark is 1070 J 1982 11.948m above gauge datum.