We asked the water authorization officer on December 13, 2023 and got this response: Regarding the ice stability, the air temperature is a very important factor. Currently, the air temperature is still high, the average air temperature of the Kaleden area for the coming 14 days is: The daytime high is probably above 50C, the nighttime low is probably above 10C. Comparing with the historical averages within Kaleden area, temperature of this year is much higher. Although the north end started to form the ice on the surface, it may not very stable. The natural circulation patterns of the lake play a significant role in ice formation. Pumping water can disrupt these patterns, potentially affecting the distribution of colder and warmer water and influencing ice stability. Rapid pumping may have more immediate impacts, while slower pumping might have gradual and subtler effects. As per the water table data attached with your email, the pumping rate during the last month is approximately 0.05ft (lake level)/day, and the pumping is stopped on Dec 13, 2023. From my perspective, this pumping rate may not have a significant impact on the ice formation.
The LNID Board’s policy is to discontinue pumping once ice begins to form, although it can take a few days for the board to consult and the pump to be turned off.