The Trent Aquatic Research Program 2020 report on Chandos Lake is out, and with permission from Dr Paul Frost, can be found under the Chandossier.com “Chandos Water Quality” menu tab. Or, via this direct link.
The KLSA has just released their 72 page 2020 report. It seems beyond excellent, and there seems much here to inform our own stewardship efforts at Chandos. Once I’ve had a better look, I shall try and highlight material that may be useful to us.
The recent interest in the radon health concern has resulted in some questions about radon’s origins.As we know, there is a concern about radioactive radon gas in dwellings, especially those in the Canadian Shield, such as those at Chandos. Where does this radon come from? This note attempts to be a bit of a primer on the subject.
The decay of uranium-238 into the radioactive gas radon-222.
Radon is the second leading cause of lung cancer, after smoking, but is first amongst non-smokers. Radon is a byproduct of the natural decay of uranium, which is a common element in the Canadian Shield. It is a radioactive gas that seeps up from the ground and enters the dwelling though cracks in concrete, open crawl spaces, and even through the water supply from a well. A well-ventilated dwelling may dilute the radon to a safe level, but a “tight” dwelling will allow it to accumulate and build up to hazardous levels.
Here is an interesting flowchart showing how all the TSW lakes are connected.
Note that area lakes Jack, Anstruther, and Eels are all TSW reservoir lakes.
It is true that Chandos Lake flows into the Crowe River, and that the Crowe River eventually enters the Trent River near Campbellford. There is a dam on the Crowe River at Marmora, that primarily controls the level of Crowe Lake. The operation of this dam has negligible effect on Chandos because the difference in elevations is about 130 metres, and between Chandos Lake and Crowe Lake there are many natural areas (wetlands, etc), to store water.