Lake Nepahwin 2019

Quality Characteristics

Spring Phosphorus Results
The 2020 spring phosphorus value for Lake Nepahwin is 19.2 µg/L. The average total spring phosphorus for Lake Nepahwin since 2001 is 13.7 µg/L which falls below the Provincial Water Quality Objective of  20.0 µg/L and indicates that this lake is likely mesotrophic.

For more detailed information, download the graph illustrating the spring phosphorus levels in Lake Nepahwin from 2001-2021 (PDF 81 KB).

Report Card
Download or print a detailed copy of the Lake Nepahwin Report Card, which outlines the characteristics and water quality of Lake Nepahwin (76.1 KB).

Shoreline Classification Project

View your lake's shoreline classification (PDF 1486 KB).

What colour is your shoreline?

General Information

Lake Nepahwin has 1822 permanent residents and 3 seasonal/recreational residents.

Location & Lake Characteristics
Lake Nepahwin is located in McKim township. Lake Nepahwin is 127.0 hectares in size and has a shoreline perimeter of 11.8 kilometres. The maximum depth is 22 metres.  For more information, view maps of Lake Nepahwin.

Watershed Information
Lake Nepahwin is located in the Ramsey Watershed. For more information on the watershed, visit the Watershed Map link.

Lake Stewardship
The Lake Nepahwin Stewardship Group has been active for many years. For more information regarding the lake stewardship groups in Greater Sudbury, or for information on how to start your own lake association, visit the Lake Stewardship link.

Biological Characteristics

Fish Species
View the list of Lake Nepahwin's documented fish species.

Aquatic Insects
View the list of the documented aquatic insects in Lake Nepahwin.

Aquatic Plants
View the list of the documented aquatic plant species in Lake Nepahwin.