Water level in CALA lakes (Rabbit, Cassels, Snake Island, Obashkong) is controlled by Ontario Power Generation’s dam on Rabbit Lake.
The Matabitchuan River Water Management Plan identifies target water levels through the year for Rabbit Lake. During the winter drawdown, once water level falls to the point where the height of land is exposed between Rabbit and Cassels, water level in Cassels, Snake Island and Obashkong ceases to drop. Rabbit Lake water level continues to drop. Between the Victoria Day and Thanksgiving weekends, OPG uses its best efforts to maintain the level in an identified “summer operating band”
Water levels are posted on the OPG website. On the River Systems page, look to the Northeast Ontario section, then the Matabitchuan River group. Choose the Rabbit Lake document.
Recent Water Level
Historic Water Levels