Low Water Datum and Levels
All depths and clearances stated herein are determined from low water datum 577.5', IGLD. at Rimouski. Quebec, Canada, 1985.
Water level data, history and projections, and tables of possible storm-induced rises at key locations are available from the U.S. Army Corps of Engineers by calling 313-226-6443. Water levels can also be found on the NOAA website.
Contact Information from NOAA Tides and Currents.
For Great Lakes Information, contact:
Great Lakes Center for Operational Oceanographic Products and Services (CO-OPS)
1305 East-West Highway
Silver Spring, MD20910-3281
Phone: 301.713.2897 ext. 191
E-mail: Great Lakes