In certain conditions algal blooms can occur which can block filters, change the pH of the water and cause taste and odour problems.
If the sensors extend to the bed level the tower can also be used to monitor the hypolimnion (lowest layer of water) which in some conditions can become anoxic (of low oxygen content) which may affect the lake ecology.
[3] Six combined limnological and meteorological observation towers were established in the Great Lakes on the US-Canadian border in 1961.
[5] A concrete limnological tower was installed at Rutland Water, England's largest reservoir by surface area, when it was built in the early 1970s.
[3] The tower also has the ability to draw water samples for further testing from the various depths and also mounts an automatic weather station.
[2] The data is continuous and displayed visually in real-time at the reservoir control centre, situated at the dam.