Open Water Data

St. Marys Quarry

Town of St. Marys, Ontario, Canada

  • E. coli
    PASS 10mpn (5 samples) Mon, Jul 8, 2024
  • Water Quality Status
    Passed tests Mon, Jul 8, 2024
  • Water Temperature
    21°C / 69.8°F (water) Mon, Jul 8, 2024
  • Air Temperature
    15.8°C / 60.4°F (air) Tue, Mar 31, 2026 at 7:00am
  • Wind
    24.1 - 39.7km/h WSW 239° Tue, Mar 31, 2026 at 7:00am
  • Clear
    Clear Tue, Mar 31, 2026 at 7:00am
  • Precipitation
    0mm Tue, Mar 31, 2026 at 7:00am
  • Air Visibility
    10km Tue, Mar 31, 2026 at 7:00am
  • Humidity
    76% Tue, Mar 31, 2026 at 7:00am

St. Marys Quarry was formerly a limestone Quarry that closed in 1920 and in the mid-1940s it was converted into a public swimming area! Since, it has become one of the more frequented swimming spots in the area to visit on hot summer days!

The description above was copied from or heavily based on Swim Guide, with permission.

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