00000nam 2200000zi 4500 9.903514 CaOODSP 20250818131755 m o d f cr cn||||||||| 210921t20202020oncd o f000 0 eng d CaOODSP eng rda CaOODSP eng fre nl----- x1y1 Fs72-52/2020-PDF Monthly and yearly mean water levels = Moyennes mensuelles et annuelles du niveau d'eau. Moyennes mensuelles et annuelles du niveau d'eau [2020 edition]. Ottawa : Canadian Hydrographic Service = Service Hydrographique du Canada, [2020] ©2020 1 online resource (1 page) : colour charts text txt rdacontent computer c rdamedia online resource cr rdacarrier Text in English and French. Water levels Great Lakes (North America) Canadian Hydrographic Service, issuing body. Monthly and yearly mean water levels = fre (CaOODSP)9.903515 Monthly and yearly mean water levels = [2024 edition] (CaOODSP)9.937468 PDF 312 KB https://publications.gc.ca/collections/collection_2021/mpo-dfo/Fs72-52-2020.pdf