The latest report from the International Lake Superior Board of Control and U.S. Army Corps of Engineers:
The monthly mean water level of Lake Superior in January was 183.54 m (602.16 ft). This is 22 cm (9 in) above the long-term (1918-2013) January average and the highest January level since 1997.
The net water supplies to Lake Superior were below average in January, ending an almost year-long streak of above-average supplies stretching back to February 2014. The level of Lake Superior declined 10 cm (4 in) last month, while on average the lake declines 7 cm (3 in) in January. The Lake Superior level at the beginning-of-February is 21 cm (8 in) above average, 25 cm (10 in) above the level recorded a year ago at this time, and 30 cm (12 in) above its chart datum level.
The monthly mean water level of Lake Michigan-Huron in January was 176.51 m (579.11 ft). This is 22 cm (9 in) above the long-term (1918-2013) January average, the highest January level since 1998.
The net water supplies to Lake Michigan-Huron were clos e to average in January. The level of Lake Michigan-Huron declined 2 cm (1 in), while on average the lake declines by 3 cm (1 in) in January. The level of Lake Michigan-Huron is 25 cm (10 in) above its long-term average beginning-of-February level, 56 cm (22 in) higher than it was a year ago, and 52 cm (20 in) above its chart datum level.
The levels of both Lakes Superior and Michigan-Huron are expected to continue their seasonal decline in February.