Ice On - Ice Off
Dates of Ice Off and Ice On on Lac des Roches - 2009
Ice Off
B0 – No sign of break-up
B1 – Open water on shore
B2 – Open water offshore
B3 – Ice in movement
B4 – Lake ice free
| Date | Stage | Comment |
|---|---|---|
| May 01 | B0 | No signs of break-up |
| May 03 | B1 | Some open water on shore |
| May 07 | B2 | Lots of open water offshore |
| May 08 | B3 | Ice only in middle of lake |
| May 10 | B4 | Lake ice free |
Ice On
F0 - No ice formation
F1 - Ice formation on shore
F2 – Ice covers bays
F3 – Lake completely frozen
| Date | Stage | Comment |
|---|
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