Onwatin Lake

COVID-19 Update – July 16, 2021

As of Friday, July 16, Greater Sudbury will enter step three of the Province’s Roadmap to Reopen. The roadmap outlines a three-step plan to safely and gradually ease public health measures and reopen the province.

Seven municipal beaches are open with lifeguard supervision from 11 a.m. to 7 p.m. daily.


Quality Characteristics

Spring Phosphorus Results
The 2017 spring phosphorus value for Onwatin Lake is 6.7 µg/L. The average total spring phosphorus for Onwatin Lake since 2001 is 7.67 µg/L which is well below the Provincial Water Quality Objective of 20.0 µg/L and indicates that this lake is likely oligotrophic.

For more detailed information, download the graph illustrating the spring phosphorus levels in Onwatin Lake from 2001-2017 (PDF 11 KB).  

Shoreline Classification Project

View your lake's shoreline classification (PDF 580 KB).

What colour is your shoreline?

General Information

Population
Onwatin Lake has 159 permanent residents and 13 seasonal/recreational residents.

Location & Lake Characteristics
Onwatin Lake is located in Hanmer and Capreol townships, near the town of Hanmer. Onwatin Lake has an area of 34.2 hectares and a shoreline perimetre of 5.4 kilometres. The maximum depth is 4 metres. Onwatin Lake is actually a widening of the Vermilion River. View maps of Onwatin Lake

Watershed Information
Onwatin is located in the Upper Vermilion Watershed. For more information on the watershed, visit the following link: Watershed Map.

Lake Stewardship
For information regarding the Onwatin Lake Stewardship Committee visit the Lake Stewardship link.

Biological Characteristics

Fish Species
For more information on the different fish species found in Greater Sudbury lakes follow the fish link.

Aquatic Insects
For more information about macro invertebrates (aquatic insects), visit the Aquatic Insects Information section of our website.

Aquatic Plants
There is currently no data for aquatic plants.