Canadian Hydrographic Service Central and Arctic Region CA573465 - Assomption Harbour DEPTHS Depths are in metres and are reduced to Chart Datum (Lowest Normal Tides) which in Milne Inlet (head)/Assomption Bay is 1.1 metres below Mean water Level (MWL). MAGNETIC VARIATION The Magnetic Compass is erratic in this area. ICE ACTION Mariners approaching beaching areas ahould bear in mind that the composition and contour of the bottom may be altered from year to year because of ice action. © Fisheries and Oceans Canada 2017. Published by the Canadian Hydrographic Service. A licence is required from the Canadian Hydrographic Service (www.charts.gc.ca) to reproduce or distribute this work.