French

Temperature and dissolved oxygen measurements were collected in the deepest basin in French Lake on August 7, 2024, to evaluate the quantity and quality of cold, oxygenated water (i.e., oxythermal habitat) available to Lake Trout, the most sensitive coldwater species present in this lake. During the summer, Lake Trout require a layer of oxythermal habitat that contains water temperatures below 8.8 degrees C (47.8 degrees F) and dissolved oxygen concentrations above 3.0 mg/L. Based on the profile from the deepest basin, the water temperature dropped below 8.8 degrees C (47.8 degrees F) at 22.8 feet, and the dissolved oxygen concentration decreased to 3.0 mg/L at 131.7 feet at the time of sampling. The thickness of this layer in the water column was 108.9 feet, indicating that oxythermal habitat was present for Lake Trout. Further, the temperature at which dissolved oxygen decreased to 3.0 mg/L (i.e., TDO3, a single variable to characterize oxythermal habitat) was 4.9 degrees C (40.8 degrees F). TDO3 values cooler than 8.8 degrees C (47.8 degrees F) indicate that oxythermal conditions were suitable for Lake Trout at the time of the survey. Data collected by the Minnesota Department of Natural Resources in 1980 during the late summer thermal stress period indicated suitable oxythermal habitat that year. Data were also collected outside the thermal maximum period in 1992, this data indicated suitable conditions during that sampling period. The least favorable oxythermal habitat conditions were recorded in 1980, during the peak summer stress period, when the suitable habitat layer thickness was 21.9 feet.

Temperature and dissolved oxygen measurements were collected in the deepest basin in French Lake on August 7, 2024, to evaluate the quantity and quality of cold, oxygenated water (i.e., oxythermal habitat) available to Lake Trout, the most sensitive coldwater species present in this lake. During the summer, Lake Trout require a layer of oxythermal habitat that contains water temperatures below 8.8 degrees C (47.8 degrees F) and dissolved oxygen concentrations above 3.0 mg/L. Based on the profile from the deepest basin, the water temperature dropped below 8.8 degrees C (47.8 degrees F) at 22.8 feet, and the dissolved oxygen concentration decreased to 3.0 mg/L at 131.7 feet at the time of sampling. The thickness of this layer in the water column was 108.9 feet, indicating that oxythermal habitat was present for Lake Trout. Further, the temperature at which dissolved oxygen decreased to 3.0 mg/L (i.e., TDO3, a single variable to characterize oxythermal habitat) was 4.9 degrees C (40.8 degrees F). TDO3 values cooler than 8.8 degrees C (47.8 degrees F) indicate that oxythermal conditions were suitable for Lake Trout at the time of the survey. Data collected by the Minnesota Department of Natural Resources in 1980 during the late summer thermal stress period indicated suitable oxythermal habitat that year. Data were also collected outside the thermal maximum period in 1992, this data indicated suitable conditions during that sampling period. The least favorable oxythermal habitat conditions were recorded in 1980, during the peak summer stress period, when the suitable habitat layer thickness was 21.9 feet.

Temperature and dissolved oxygen measurements were collected in the deepest basin in French Lake on August 7, 2024, to evaluate the quantity and quality of cold, oxygenated water (i.e., oxythermal habitat) available to Lake Trout, the most sensitive coldwater species present in this lake. During the summer, Lake Trout require a layer of oxythermal habitat that contains water temperatures below 8.8 degrees C (47.8 degrees F) and dissolved oxygen concentrations above 3.0 mg/L. Based on the profile from the deepest basin, the water temperature dropped below 8.8 degrees C (47.8 degrees F) at 22.8 feet, and the dissolved oxygen concentration decreased to 3.0 mg/L at 131.7 feet at the time of sampling. The thickness of this layer in the water column was 108.9 feet, indicating that oxythermal habitat was present for Lake Trout. Further, the temperature at which dissolved oxygen decreased to 3.0 mg/L (i.e., TDO3, a single variable to characterize oxythermal habitat) was 4.9 degrees C (40.8 degrees F). TDO3 values cooler than 8.8 degrees C (47.8 degrees F) indicate that oxythermal conditions were suitable for Lake Trout at the time of the survey. Data collected by the Minnesota Department of Natural Resources in 1980 during the late summer thermal stress period indicated suitable oxythermal habitat that year. Data were also collected outside the thermal maximum period in 1992, this data indicated suitable conditions during that sampling period. The least favorable oxythermal habitat conditions were recorded in 1980, during the peak summer stress period, when the suitable habitat layer thickness was 21.9 feet.

Based on Minnesota DNR survey data, anglers target Yellow Perch and Lake Trout in French. See the full species list above for catch rates, size structure, and quality scores.

We don't have a confirmed public access point on record for French. Check the DNR LakeFinder page for current access details before you go.

French has a maximum depth of 130 feet, per Minnesota DNR data.

The most recent Minnesota DNR survey data for the main sport fish in French is from 1996. Surveys this old should be treated with some caution — fish populations change over time.

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