We have been notified that DFO will be treating the Credit River with lampricide (a pesticide to kill sea lamprey) in Norval. We anticipate seeing the Credit River being a yellowish colour today, which can remain for up to 24 hours. If the date of treatment changes, I will provide an update.
Sea lamprey are parasitic and have a major impact on our fish populations. The lampricide is used to control sea lamprey populations and is approved for use in Canada. The lampricide selectively kills sea lampreys without significantly harming other plants or animals or having long-term impacts on the environment. It has been used in the Great Lakes systems since 1958.
Additional information can be found here: http://www.glfc.org/lampricide.php and http://www.glfc.org/pubs/FACT_4a.pdf