Harriet

A targeted survey consisting of a temperature-dissolved oxygen profile was conducted in August of 2025 to assess the habitat available to Lake Whitefish in Harriet Lake. Data collected during this survey will be used by the Minnesota Pollution Control Agency (MPCA) to evaluate habitat in lakes that support coldwater species including Lake Whitefish. Based on the profile taken from the deepest area of the lake the temperature where the dissolved oxygen was 3.0 mg/L (TDO3) was 13.8 degrees Celsius (56.84 degrees Fahrenheit). This indicates that suitable habitat was present for Lake Whitefish in 2025 and meets the water quality standard currently proposed by MPCA of a TDO3 of 17.2 degrees Celsius (62.96 degrees Fahrenheit) or less for lakes that support Lake Whitefish. However, the suitable habitat was limited to a narrow band between 15 and 17 feet in the water column. At a depth of 18 feet the dissolved oxygen dropped below 3.0 mg/L. Lake Whitefish were last sampled in Harriet Lake during late fall of 2013 as part of a targeted survey of the population. Prior to that, the last time Lake Whitefish were sampled was in the fall of 1980. In both cases, the numbers of fish sampled were small.

A targeted survey consisting of a temperature-dissolved oxygen profile was conducted in August of 2024 to assess the habitat available to Lake Whitefish in Harriet Lake. Data collected during this survey will be used by the MPCA as part of an assessment of surface waters in the Lake Superior North Watershed. At the time of this survey, the TDO3 value was 20.8 degrees Celsius. This indicates that oxythermal habitat was poor for Lake Whitefish and failed to meet the water quality standard of a TDO3 of 17.2 degrees Celsius or less for lakes that support Lake Whitefish currently proposed by the MPCA. Lake Whitefish were last sampled in Harriet Lake during late fall of 2013 as part of a targeted survey of the population. Prior to that, the last time Lake Whitefish were sampled was in the fall of 1980. In both cases, the numbers of fish sampled were small.

A targeted survey consisting of a temperature-dissolved oxygen profile was conducted in August of 2024 to assess the habitat available to Lake Whitefish in Harriet Lake. Data collected during this survey will be used by the MPCA as part of an assessment of surface waters in the Lake Superior North Watershed. At the time of this survey, the TDO3 value was 20.8 degrees Celsius. This indicates that oxythermal habitat was poor for Lake Whitefish and failed to meet the water quality standard of a TDO3 of 17.2 degrees Celsius or less for lakes that support Lake Whitefish currently proposed by the MPCA. Lake Whitefish were last sampled in Harriet Lake during late fall of 2013 as part of a targeted survey of the population. Prior to that, the last time Lake Whitefish were sampled was in the fall of 1980. In both cases, the numbers of fish sampled were small.

Based on Minnesota DNR survey data, anglers target Walleye, Yellow Perch, Northern Pike, and Black Crappie in Harriet. See the full species list above for catch rates, size structure, and quality scores.

Minnesota DNR records list public access for Harriet. Check the DNR LakeFinder page for the launch type and directions before you go.

Harriet has a maximum depth of 37 feet, per Minnesota DNR data.

The most recent Minnesota DNR survey data for the main sport fish in Harriet is from 2022.

No invasive species are on record for Harriet in Minnesota DNR data. Always clean, drain, and dry your equipment to help keep it that way.