Old Woman River (Ontario)

{{Distinguish|text=the community of Old Woman's River, Ontario}}

{{Infobox river

| name = Old Woman River

| image = Old Woman River Upstream (132992284).jpg

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| pushpin_map = Ontario

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| subdivision_type1 =

| subdivision_name1 = Canada

| subdivision_type2 = Province

| subdivision_name2 = Ontario

| subdivision_type3 = District

| subdivision_name3 = Algoma

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| mouth = Old Woman Bay (Lake Superior)

| mouth_location = Unorg. North Algoma

| mouth_coordinates = {{Coord|47|47|08|N|84|53|45|W|region:CA-ON_type:waterbody|display=inline,title}}{{Cite cgndb|FCGXE|Old Woman River|access-date=5 October 2022}}

| mouth_elevation = {{convert|183|m|abbr=on}}

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| tributaries_left = South Old Woman River

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The Old Woman River is a river in Algoma District of Ontario, Canada, which empties into Old Woman Bay on Lake Superior south of Wawa. It flows through Lake Superior Provincial Park.

The river follows a fault which became a spillway for glacial meltwater following the last ice age. The river's valley has extensive deposits of sand and gravel. At its mouth, the river bends sharply behind a beach berm, that has formed as a result of prevailing westerly winds, which in turn causes lake waves to dam the river's mouth with sand.{{cite web |author=Bob Turner |author2=Marianne Quat |author3=Ruth Debicki |author4=Phil Thurston |title=Lake Superior Provincial Park - On the Geological Shores of the World's Largest Freshwater Lake |url=https://files.ontario.ca/ndmnrf-geotours-2/ndmnrf-geotours-lake-superior-en-2021-12-13.pdf |publisher=Natural Resources Canada and Ontario Geological Survey |date=2015 |access-date=5 October 2022}}

Towering cliffs along the bay have been home to peregrine falcons.

The name for the bay and river come from a rock formation near the river's mouth that resembles the face of an old woman.

==See also==

• List of Ontario rivers