Onwatin Lake

Quality Characteristics

Spring Phosphorus Results
The 2022 spring phosphorus value for Onwatin Lake is 6.8 µg/L. The average total spring phosphorus for Onwatin Lake since 2001 is 7.6 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 to 2022 (PDF 29 KB).  

Shoreline Classification Project

For more information on Onwatin Lake shoreline, view the waterfront property map

What colour is your shoreline?

General Information

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
There is currently no data for fish species.

Aquatic Insects
There is currently no data for aquatic insects.

Aquatic Plants
There is currently no data for aquatic plants.