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<\/p>\nMississauga officials are keeping a close eye on a creek and marsh in the city\u2019s northwest end to make sure there are no more signs of busy beavers whose habits have been causing water flow problems in the natural area.<\/p>\n
Last fall and over the winter, the City of Mississauga removed a number of beaver dams and beavers from in and around Sixteen Mile Creek and Osprey Marsh in the heart of the Lisgar community.<\/p>\n
The critters, who were safely relocated, had built dams that were causing drainage problems near the creek and marsh. That subsequently led to the water flow issues, the city said.<\/p>\n
Ward 10 Coun. Sue McFadden, who represents the area, said in an update to the community this week that city staff told her the beavers and their dams along Sixteen Mile Creek had been removed over the past several months.<\/p>\n
\u201cHowever, residents have still reported beaver sightings around the marsh. Additional attention is being paid to this matter in the coming weeks,\u201d the councillor said in her latest newsletter to constituents.<\/p>\n
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Aerial image shows location of Osprey Marsh and surrounding neighbourhoods.<\/p>\n
Osprey Marsh, located to the immediate northeast of Britannia Road West and Ninth Line, is a man-made stormwater pond (or series of smaller ponds) that regulates the flow of rainwater and snow melt from storm sewers and the Sixteen Mile Creek upstream.<\/p>\n
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Essentially, it\u2019s an important feature that\u2019s designed to control flooding, which has impacted that part of Mississauga for years.<\/p>\n
McFadden said late last fall that her office worked closely with city staff to address \u201cthe recent situation of stagnant water\u201d along the creek that was supposed to drain into Osprey Marsh.<\/p>\n
\u201cSo far, two beaver dams have been removed \u2014 one south of the Osprey Boulevard bridge and one just north of it,\u201d the councillor said in late 2025. \u201cReports of additional dams further upstream have been investigated and two more have been confirmed and will be removed shortly to restore proper flow and level of water in the creek. Relocation of the beavers to a more rural setting is also being considered in order to help manage proper operation of the stormwater system in the Lisgar community.\u201d<\/p>\n
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Photo taken last fall shows stagnant water along Sixteen Mile Creek that was supposed to have drained into Osprey Marsh but was impeded by beaver dams. (Photo: Ward 10 Mississauga Coun. Sue McFadden newsletter)<\/p>\n
The issue with the beavers, among the largest living rodents in the world, comes as Osprey Marsh is undergoing its first-ever dredging<\/a> to allow it to better perform its important function, the city said earlier.<\/p>\n The marsh\/stormwater pond was built in the mid-1990s and the ongoing work this year will remove sediment that has settled at the bottom of the pond the past few decades.<\/p>\n Osprey Marsh, much like nearby Lake Wabukayne to the east, has also become home to numerous types of birds and other wildlife over the years.<\/p>\n And this isn\u2019t the first time the thick-furred, web-footed beavers have left an unwelcome mark on the site.<\/p>\n