Range of ice-out dates is approximately eight weeks from Mar 15 (in 2011) to May 11 (in 2012) (see Figure 1).
There are weak indications for a slightly later ice-out date in the last decade (see Figure 2).
Ice-out dates were mostly similar to those from a nearby similarly-sized lake (see Figure 3).
Ice-Out Dates
Figure 1: Eagle Lake ice out dates, 1999-2021.
Figure 2: Eagle Lake ice out dates by year. Note no data for 1998.
Comparison to Other Lakes
Lake Nebagamon is much larger (986 acres) but with a similar maximum depth (56 ft) as Eagle Lake that is approximately 20 miles nearly straight west of Eagle Lake. With the exception of a few notable years, the ice-out dates between these two lakes are quite similar. Lake Mendota is a very large (9781 acres) and deep (83 ft maximum) lake that is approximately 350 miles south of Eagle Lake. The ice-out dates for Mendota are always before those for Eagle Lake, but the very generally track together.
Figure 3: Eagle Lake ice out dates by year with other lakes shown for comparison.
