Cobourg – Pine Pollen in Lake Ontario Appears as Foaming Yellow Scum

In City Hall

The Town of Cobourg’s Environmental Service’s Department would like to inform citizens that pine pollen is currently visible on the shorelines of Lake Ontario during the months of June and July and is not harmful.

Most common during the month of June, the accumulation of a mustard yellow scum on inland lakes and along the shores and bays of Lake Ontario is caused when pine pollen from surrounding forests is blown into the water by high winds. This is a natural phenomenon that occurs in most of Northern Ontario where a forest ecosystem is prevalent.

This pine pollen should not be mistaken for algae, spilled paint or petroleum and is not harmful nor does it pose a health risk. The pine pollen will eventually decompose or become trapped in the sediment along the shoreline.

Pete Fisher
Author: Pete Fisher

Has been a photojournalist for over 30-years and have been honoured to win numerous awards for photography and writing over the years. Best selling author for the book Highway of Heroes - True Patriot Love

Join Our Newsletter!

Want to keep up to date on news and events in Northumberland? Subscribe to newsletter!

You may also read!

Letter to the Editor – The Advocacy Cult That Hijacked Cobourg’s Homelessness Crisis

(Today's Northumberland file photo) For years, Cobourg has watched as a small group of vocal advocates have dominated the conversation

Read More...

Letter to the Editor – Selective Boundaries – Why Proof of Residency for Recycling, but Not for Public Safety or Services?

(Today's Northumberland file photo) As of July 2, 2025, Northumberland County is requiring proof of residency to access its Community

Read More...

Northumberland OPP – Numerous Charges After Stolen Vehicle Recovered (Name Released)

Officers from the Northumberland Detachment of the Ontario Provincial Police (OPP) have recovered a stolen vehicle and laid multiple

Read More...

Mobile Sliding Menu