Some ice cover timing from selected research lakes. Dates are determined by inspecting camera imagery. We use mainly Reconxy Hyperfire outdoor cameras, set for time lapse imagery.
ONTARIO
| Lake | Year | First appearance of ice | Complete freeze over | First open water | Water clear of ice | Maximum thickness |
| MacDonald Lake | 2015 - 2016 | 2015-11-30 | 2016-01-04 | 2016-04-17 | 2016-04-27 | 41.6 cm |
| 45.24°N, 78.56°W | 2016 - 2017 | 2016-12-04 | 2016-12-16 | 2017-04-09 | 2017-04-22 | 47.5 cm |
| 2017 - 2018 | 2017-12-08 | 2017-12-12 | 2018-04-27 | 2018-05-08 | 66.3 cm | |
| 2018 - 2019 | 2018-11-18 | 2018-11-27 | 2019-04-22 | 2019-05-05 | 69.3 cm | |
| 2019 - 2020 | 2019-11-29 | 2019-12-17 | 2020-04-09 | 2020-05-03 |
48 cm (on Mar. 6, site visits stopped early due to COVID-19) |
|
| 2020 - 2021 | 2020-12-07 | 2020-12-26 | 2021-03-26 | 2021-04-12 | 49 cm (March 8, manual measurement) | |
| Clear Lake | 2015 - 2016 | 2015-12-19 | 2016-01-05 | 2016-03-06 | 2016-04-24 | 41.3 cm |
| 45.24°N, 78.53°W | 2016 - 2017 | 2016-12-04 | 2016-12-16 | 2017-04-14 | 2017-04-20 | 44.4 cm |
| 2017 - 2018 | 2017-12-07 | 2017-12-11 | 2018-04-29 | 2018-05-08 | 48.1 cm | |
| 2018 - 2019 | 2018-11-14 | 2018-11-22 | 2019-04-27 | 2019-05-05 | 67.7 cm | |
| 2019 - 2020 | 2019-11-30 | 2019-12-07 | 2020-04-14 | 2020-04-27 | 46.8 cm (on Mar. 6, site visits stopped early due to COVID-19) | |
| 2020 - 2021 | 2020-12-04 | 2020-12-26 | 2021-03-24 | 2021-12-04 | 48 cm (March 8, manual measurement) | |
| Johnson Lake | 2015 - 2016 | 2015-12-19 | 2016-01-05 | 2016-04-18 | 2016-04-30 | |
| 45.27°N, 78.62°W | 2016 - 2017 | 2016-12-04 | 2016-12-15 | 2017-03-23 | 2017-04-24 | |
| 2017 - 2018 | 2017-11-28 | 2017-12-12 | 2018-04-25 | 2018-05-09 | ||
| 2018 - 2019 | 2018-11-14 | 2018-11-26 | 2019-04-17 | 2019-05-07 | ||
| 2019 - 2020 | 2019-11-29 | 2019-12-19 | 2020-03-29 | 2020-04-26 | ||