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Search results with tag "Great lakes water"
User’s Guide to Vertical Control and Geodetic Leveling for ...
tidesandcurrents.noaa.govThe committee met on a bi-weekly basis ... the U.S. Army Corps of Engineers (USACE) national dredging program, the ... survey measurements are additionally used to form the basis of the IGLD for the Great Lakes water level stations. Due to the variability of water level datums (see tidal epoch), CO-OPS uses ...