Alpine

Temperature and dissolved oxygen measurements were collected in the deepest basin in Alpine Lake, on August 6, 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 (Lake Whitefish and Cisco, also known as Tullibee, are also present). 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 38.0 feet, and the dissolved oxygen concentration decreased to 3.0 mg/L at 42.9 feet at the time of sampling. The thickness of this layer in the water column was 4.9 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 8.2 degrees C (46.8 degrees F). TDO3 values cooler than 8.8 degrees C (47.8 degrees F) indicate that oxythermal conditions were suitable, but marginal, for Lake Trout at the time of the survey. Data collected by the Minnesota Department of Natural Resources in 1972 during the late summer thermal stress period indicated suitable oxythermal habitat. Data were also collected outside the thermal maximum period in 1984 and 1990, this data indicated variable oxythermal habitat during those sampling periods. The least favorable oxythermal habitat conditions were recorded in 1990, outside the peak summer stress period, when the suitable habitat layer was not present. When inadequate oxythermal habitat is available, Lake Trout are squeezed into unfavorable, warmer water conditions and experience higher levels of stress.

Temperature and dissolved oxygen measurements were collected in the deepest basin in Alpine Lake, on August 6, 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 (Lake Whitefish and Cisco, also known as Tullibee, are also present). 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 38.0 feet, and the dissolved oxygen concentration decreased to 3.0 mg/L at 42.9 feet at the time of sampling. The thickness of this layer in the water column was 4.9 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 8.2 degrees C (46.8 degrees F). TDO3 values cooler than 8.8 degrees C (47.8 degrees F) indicate that oxythermal conditions were suitable, but marginal, for Lake Trout at the time of the survey. Data collected by the Minnesota Department of Natural Resources in 1972 during the late summer thermal stress period indicated suitable oxythermal habitat. Data were also collected outside the thermal maximum period in 1984 and 1990, this data indicated variable oxythermal habitat during those sampling periods. The least favorable oxythermal habitat conditions were recorded in 1990, outside the peak summer stress period, when the suitable habitat layer was not present. When inadequate oxythermal habitat is available, Lake Trout are squeezed into unfavorable, warmer water conditions and experience higher levels of stress.

Temperature and dissolved oxygen measurements were collected in the deepest basin in Alpine Lake, on August 6, 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 (Lake Whitefish and Cisco, also known as Tullibee, are also present). 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 38.0 feet, and the dissolved oxygen concentration decreased to 3.0 mg/L at 42.9 feet at the time of sampling. The thickness of this layer in the water column was 4.9 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 8.2 degrees C (46.8 degrees F). TDO3 values cooler than 8.8 degrees C (47.8 degrees F) indicate that oxythermal conditions were suitable, but marginal, for Lake Trout at the time of the survey. Data collected by the Minnesota Department of Natural Resources in 1972 during the late summer thermal stress period indicated suitable oxythermal habitat. Data were also collected outside the thermal maximum period in 1984 and 1990, this data indicated variable oxythermal habitat during those sampling periods. The least favorable oxythermal habitat conditions were recorded in 1990, outside the peak summer stress period, when the suitable habitat layer was not present. When inadequate oxythermal habitat is available, Lake Trout are squeezed into unfavorable, warmer water conditions and experience higher levels of stress.

Based on Minnesota DNR survey data, anglers target Walleye, Northern Pike, Smallmouth Bass, Yellow Perch, and Lake Trout in Alpine. 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 Alpine. Check the DNR LakeFinder page for current access details before you go.

Alpine has a maximum depth of 65 feet, per Minnesota DNR data.

The most recent Minnesota DNR survey data for the main sport fish in Alpine is from 2002. Surveys this old should be treated with some caution — fish populations change over time.

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