Link to RLR information.
1926-68 DATA FROM PORTSMOUTH (NAVY YARD) SITE 1969-1972 DATA FROM SEAVEY IS, BACK CHANNEL SITE 1973 TO DATE DATA FROM SEAVEY IS,BERTH 2 SITE =========================== FOLLOWING PSMSL DOCUMENTATION ADDED 11-JUN-91 : Seavey Island 960/177 RLR(1972) is 12.9m below BM12 =========================== BENCHMARK INFORMATION UPDATE ADDED 12-JUL-93 : Seavey Island 960/177 RLR(1972) is 12.9m below BM12 =========================== FOLLOWING PSMSL DOCUMENTATION ADDED 15-Feb-2012 : Seavey Island is now an Historic station. Last data received was that for 1986. Information from the NOAA website confirms Primary benchmark to be NO 21 1975 $.59m above TGZ. Benchmark 12 from the original RLR diagram no longer features on the NOAA website.
N.O.A.A. / N.O.S. N/oes33, Ssmc4, Room 6531 1305 East-West Highway Silver Spring, MD 20910 UNITED STATES