Petticoat Creek is a stream in the cities of Pickering,

Toronto Toronto ( ; or ) is the capital city of the Canadian province of Ontario. With a recorded population of 2,794,356 in 2021, it is the most populous city in Canada and the fourth most populous city in North America. The city is the anch ...

and

Markham Markham may refer to: It may also refer to brand of of clothing which originates from South Africa which saw it's establishment in 1873. Biology * Markham's storm-petrel (''Oceanodroma markhami''), a seabird species found in Chile and Colombia * ...

in the Greater Toronto Area of

Ontario Ontario ( ; ) is one of the thirteen provinces and territories of Canada.Ontario is located in the geographic eastern half of Canada, but it has historically and politically been considered to be part of Central Canada. Located in Central C ...

Canada Canada is a country in North America. Its ten provinces and three territories extend from the Atlantic Ocean to the Pacific Ocean and northward into the Arctic Ocean, covering over , making it the world's second-largest country by tot ...

. The creek is in the

Great Lakes Basin The Great Lakes Basin consists of the Great Lakes and the surrounding lands of the states of Illinois, Indiana, Michigan, Minnesota, New York, Ohio, Pennsylvania, and Wisconsin in the United States, and the province of Ontario in Canada, whose dir ...

, is a tributary of

Lake Ontario Lake Ontario is one of the five Great Lakes of North America. It is bounded on the north, west, and southwest by the Canadian province of Ontario, and on the south and east by the U.S. state of New York. The Canada–United States border ...

, and falls under the auspices of the

Toronto and Region Conservation Authority The Toronto and Region Conservation Authority (TRCA) is a conservation authority in southern Ontario, Canada. It owns about of land in the Toronto region, and it employs more than 400 full-time employees and coordinates more than 3,000 voluntee ...

. Its watershed covers , and the cumulative length of all its branches is . Land use in the watershed consists of 52% agricultural, 27% protected greenspace and 21% urban. The "Petticoat Creek watershed is dominated by the South Slope physiographic region, a smooth, faintly

drumlin A drumlin, from the Irish word ''droimnín'' ("littlest ridge"), first recorded in 1833, in the classical sense is an elongated hill in the shape of an inverted spoon or half-buried egg formed by glacial ice acting on underlying unconsolidated ...

ized

till plain Till plains are an extensive flat plain of glacial till that forms when a sheet of ice becomes detached from the main body of a glacier and melts in place, depositing the sediments it carried. Ground moraines are formed with melts out of the glaci ...

." Because the creek is not long enough for its headwaters to lie within the groundwater rich

Oak Ridges Moraine The Oak Ridges Moraine is an ecologically important geological landform in the Mixedwood Plains of south-central Ontario, Canada. The moraine covers a geographic area of between Caledon and Rice Lake, near Peterborough. One of the most sign ...

, waterflow on the upper reaches is intermittent and dependent on precipitation. Lower reaches, below the ancient shoreline of

glacial Lake Iroquois Glacial Lake Iroquois was a prehistoric proglacial lake that existed at the end of the last ice age approximately 13,000 years ago. The lake was essentially an enlargement of the present Lake Ontario that formed because the St. Lawrence River down ...

, is more consistent.

Petticoat Creek Conservation Area

The Petticoat Creek Conservation Area is located at the mouth of the creek at Lake Ontario, (conservation area) and is managed by the Toronto and Region Conservation Authority after the Petticoat Creek Conservation Authority was absorbed in the TRCA.

References

Footnotes

Bibliography

* {{refend

External links

Petticoat Creek Conservation Area

Petticoat Creek Watershed Report Card 2018
(Toronto and Region Conservation Authority)
Upper Petticoat Creek Terrestrial Biological Inventory and Assessment 2015
(Toronto and Region Conservation Authority) Rivers of the Regional Municipality of York Rivers of the Regional Municipality of Durham Rivers of Toronto Tributaries of Lake Ontario

Petticoat Creek Conservation Area

See also

References

Footnotes

Bibliography

External links