ICE COVER STUDY
Township of Madawaska Valley
Barry's Bay, Ontario, Canada
23.5' Longitude 77o 38.5'
This small (~1 km2) land-locked lake is largely
spring fed with no above-ground exit and is sheltered from heavy winds.
The Lake level is
relatively constant, varying with weather and the seasons rather than with any
The ice generally melts in place rather than being
pushed ashore, so the freeze and thaw is more directly dependent on temperature
than is the case with larger lakes exposed to more variables.
The slope now shows the ice cover per year
to be receding at a rate of about 0.7 day per year;
however, in 1997, the trend actually indicated increasing ice cover days.
More significant perhaps, is the trend toward more chaotic behavior in the last half of the sample.
For more data on more lakes see the Environment
(EMAN section "IceWatch") http://www.naturewatch.ca
Green Lake Data:
© D. De La Matter Dec. 11, 2017