Mark’s Bay South

Sault Ste. Marie, Ontario
Managed by Swim Drink Fish Canada - Great Lakes Guide
Due to Covid-19 all Ontario beaches are closed. Click here to learn more.

Mark’s Bay South contains about 2000 metres of sandy shoreline on St. Marys River, perfect for swimming, boating, and fishing. The surrounding forest, which features red pine and cedar, is ideal for hiking and exploring nature.

Get directions to this beach
COVID-19

Keep your distance from other people.

Practicing social distancing is essential right now. Follow the advice of the health experts. If your community has asked that you remain indoors and away from others, do so. Heading to the beach should only be considered an option if social distancing practices can be followed. Spending a day in any crowded place is the worst thing we can do for our most vulnerable right now and will counter the efforts to curb the virus’ spread.

For more information, please visit the World Health Organization public resource on COVID-19.

Water Quality
  • Passed water quality tests at least 95% of the time

  • Historical Status
  • This status is based on the latest sample, taken on August 21st, 2019. Swim Drink Fish Canada - Great Lakes Guide updates the status of this beach as soon as test results become available. These results were posted to Swim Guide on August 23th, 2019 at 9:56 AM.
For water quality icon legend, click:  
Current Weather
12°C
Cloudy
  View this beach on Great Lakes Guide
  • Report Pollution
Monitoring Frequency

Mark’s Bay South is sampled weekly from June 24th from August 29th.

Source Information

Algoma Public Health samples beaches weekly from mid-June to the end of August. Official sampling results are unavailable for this region. The beaches are monitored, but the actual sampling schedule and the sample results are unknown, except in the case of a recreational water quality advisory. Sampling dates and results are necessary for Lake Ontario Waterkeeper to enter the data into Swim Guide.

Swimming advisories with dates are shared with the public on Swim Guide. If no advisory has been made, it is most likely that those beaches have passed standards for swimming. However, because we cannot specify a sample date or confirm the result we are unfortunately unable to update Swim Guide with data. Algoma Public Health posts on their website a map showing current conditions of beaches. Please visit http://www.algomapublichealth.com/inspections-environment/recreational-water/beach-warnings/ for the latest information. As of 2018, Ontario beaches are following the Operational Approaches for Recreational Water Guideline, 2018, and the Recreational Water Protocol, 2018, for geometric mean and single-sample maximum parameters. These are now equivalent to those set out in the Guidelines for Canadian Recreational Water Quality – Third Edition, 2012: Geometric mean concentration (minimum of five samples) greater than 200 E. coli/100 mL Single-sample maximum concentration greater than 400 E. coli/100 mL (These values replace the previous, more stringent Ontario standard: a geometric mean of greater than 100 E. coli/100 mL.) A beach is marked Green when the geometric mean of 5 samples collected within a 30-day period is below 200 E. coli / 100 ml of water and the single sample value is below 400 E.coli/100mL. A beach is marked Red when the geometric mean of 5 samples collected within a 30-day period exceeds 200 E. coli / 100 ml of water and/or exceeds the single sample value of 400 E.coli/100mL. A beach is marked by Grey when reliable or up-to-date information is not available.DISCLAIMER:Historical data from 2017 and prior reflect the previous Ontario standard of a geometric mean of greater than 100 E. coli /100 mL. Historical data from 2018 onward reflect the new Ontario Operational Approaches for Recreational Water Guideline, 2018: Geometric mean concentration greater than 200 E. coli/ 100 mL and single-sample maximum concentration of greater than 400 E. coli /100 mL.

Water Quality Graph

Mark’s Bay South

Sault Ste. Marie, Ontario
Managed by Swim Drink Fish Canada - Great Lakes Guide
COVID-19

Keep your distance from other people.

Practicing social distancing is essential right now. Follow the advice of the health experts. If your community has asked that you remain indoors and away from others, do so. Heading to the beach should only be considered an option if social distancing practices can be followed. Spending a day in any crowded place is the worst thing we can do for our most vulnerable right now and will counter the efforts to curb the virus’ spread.

For more information, please visit the World Health Organization public resource on COVID-19.

Water Quality
  • Passed water quality tests at least 95% of the time
  • Historical Status
  • This status is based on the latest sample, taken on August 21st, 2019. Swim Drink Fish Canada - Great Lakes Guide updates the status of this beach as soon as test results become available. These results were posted to Swim Guide on August 23th, 2019 at 9:56 AM.
For water quality icon legend, click:  
Current Weather
12°C
Cloudy
Due to Covid-19 all Ontario beaches are closed. Click here to learn more.

Mark’s Bay South contains about 2000 metres of sandy shoreline on St. Marys River, perfect for swimming, boating, and fishing. The surrounding forest, which features red pine and cedar, is ideal for hiking and exploring nature.

Get directions to this beach
  View this beach on Great Lakes Guide
  • Report Pollution
Monitoring Frequency

Mark’s Bay South is sampled weekly from June 24th from August 29th.

Source Information

Algoma Public Health samples beaches weekly from mid-June to the end of August. Official sampling results are unavailable for this region. The beaches are monitored, but the actual sampling schedule and the sample results are unknown, except in the case of a recreational water quality advisory. Sampling dates and results are necessary for Lake Ontario Waterkeeper to enter the data into Swim Guide.

Swimming advisories with dates are shared with the public on Swim Guide. If no advisory has been made, it is most likely that those beaches have passed standards for swimming. However, because we cannot specify a sample date or confirm the result we are unfortunately unable to update Swim Guide with data. Algoma Public Health posts on their website a map showing current conditions of beaches. Please visit http://www.algomapublichealth.com/inspections-environment/recreational-water/beach-warnings/ for the latest information. As of 2018, Ontario beaches are following the Operational Approaches for Recreational Water Guideline, 2018, and the Recreational Water Protocol, 2018, for geometric mean and single-sample maximum parameters. These are now equivalent to those set out in the Guidelines for Canadian Recreational Water Quality – Third Edition, 2012: Geometric mean concentration (minimum of five samples) greater than 200 E. coli/100 mL Single-sample maximum concentration greater than 400 E. coli/100 mL (These values replace the previous, more stringent Ontario standard: a geometric mean of greater than 100 E. coli/100 mL.) A beach is marked Green when the geometric mean of 5 samples collected within a 30-day period is below 200 E. coli / 100 ml of water and the single sample value is below 400 E.coli/100mL. A beach is marked Red when the geometric mean of 5 samples collected within a 30-day period exceeds 200 E. coli / 100 ml of water and/or exceeds the single sample value of 400 E.coli/100mL. A beach is marked by Grey when reliable or up-to-date information is not available.DISCLAIMER:Historical data from 2017 and prior reflect the previous Ontario standard of a geometric mean of greater than 100 E. coli /100 mL. Historical data from 2018 onward reflect the new Ontario Operational Approaches for Recreational Water Guideline, 2018: Geometric mean concentration greater than 200 E. coli/ 100 mL and single-sample maximum concentration of greater than 400 E. coli /100 mL.

Water Quality Graph

  Beach Location Water Quality
Sault Ste. Marie, Ontario
Superior Township, Michigan
Sault Sainte Marie, Michigan
Sugar Island, Michigan
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