One

Temperature and dissolved oxygen (DO) measurements were collected on August 1st, 2025, in two locations in Lake One, WQ1 and WQ2, to evaluate the quantity and quality of cold, oxygenated water (i.e., oxythermal habitat) available to Lake Whitefish, the most sensitive coldwater species present in this lake (Cisco, also known as 'Tullibee', are also present). During the summer, Lake Whitefish require a layer of oxythermal habitat that contains water temperatures below 17.2 degrees C (63.0 degrees F) and dissolved oxygen concentrations above 3.0 mg/L. Based on the profiles from WQ1 and WQ2 respectively, the water temperature decreased below 17.2 degrees C (63.0 degrees F) at 49.3 feet and 19.9 feet and the dissolved oxygen concentration decreased to 3.0 mg/L at 43.9 feet and 15.9 feet at the time of sampling. Therefore, the water column did not contain a layer of water with sufficient temperature and dissolved oxygen for Lake Whitefish. Further, the temperature at which dissolved oxygen decreased to 3.0 mg/L (i.e., TDO3, a single variable to characterize oxythermal habitat) was 20.2 degrees C (68.4 degrees F). TDO3 values warmer than 17.2 degrees C (63.0 degrees F) indicate that oxythermal conditions were unsuitable for Lake Whitefish at the time of the survey. Data collected by the Minnesota Department of Natural Resources during the late summer period of maximum oxythermal stress (July 26th to Aug 24th) in 2024 also indicates unsuitable oxythermal habitat. When adequate oxythermal habitat is unavailable, Lake Whitefish are squeezed into unfavorable, warmer water conditions and experience higher levels of stress.

Temperature and dissolved oxygen (DO) measurements were collected on August 1st, 2025, in two locations in Lake One, WQ1 and WQ2, to evaluate the quantity and quality of cold, oxygenated water (i.e., oxythermal habitat) available to Lake Whitefish, the most sensitive coldwater species present in this lake (Cisco, also known as 'Tullibee', are also present). During the summer, Lake Whitefish require a layer of oxythermal habitat that contains water temperatures below 17.2 degrees C (63.0 degrees F) and dissolved oxygen concentrations above 3.0 mg/L. Based on the profiles from WQ1 and WQ2 respectively, the water temperature decreased below 17.2 degrees C (63.0 degrees F) at 49.3 feet and 19.9 feet and the dissolved oxygen concentration decreased to 3.0 mg/L at 43.9 feet and 15.9 feet at the time of sampling. Therefore, the water column did not contain a layer of water with sufficient temperature and dissolved oxygen for Lake Whitefish. Further, the temperature at which dissolved oxygen decreased to 3.0 mg/L (i.e., TDO3, a single variable to characterize oxythermal habitat) was 20.2 degrees C (68.4 degrees F). TDO3 values warmer than 17.2 degrees C (63.0 degrees F) indicate that oxythermal conditions were unsuitable for Lake Whitefish at the time of the survey. Data collected by the Minnesota Department of Natural Resources during the late summer period of maximum oxythermal stress (July 26th to Aug 24th) in 2024 also indicates unsuitable oxythermal habitat. When adequate oxythermal habitat is unavailable, Lake Whitefish are squeezed into unfavorable, warmer water conditions and experience higher levels of stress.

Temperature and dissolved oxygen (DO) measurements were collected on August 1st, 2025, in two locations in Lake One, WQ1 and WQ2, to evaluate the quantity and quality of cold, oxygenated water (i.e., oxythermal habitat) available to Lake Whitefish, the most sensitive coldwater species present in this lake (Cisco, also known as 'Tullibee', are also present). During the summer, Lake Whitefish require a layer of oxythermal habitat that contains water temperatures below 17.2 degrees C (63.0 degrees F) and dissolved oxygen concentrations above 3.0 mg/L. Based on the profiles from WQ1 and WQ2 respectively, the water temperature decreased below 17.2 degrees C (63.0 degrees F) at 49.3 feet and 19.9 feet and the dissolved oxygen concentration decreased to 3.0 mg/L at 43.9 feet and 15.9 feet at the time of sampling. Therefore, the water column did not contain a layer of water with sufficient temperature and dissolved oxygen for Lake Whitefish. Further, the temperature at which dissolved oxygen decreased to 3.0 mg/L (i.e., TDO3, a single variable to characterize oxythermal habitat) was 20.2 degrees C (68.4 degrees F). TDO3 values warmer than 17.2 degrees C (63.0 degrees F) indicate that oxythermal conditions were unsuitable for Lake Whitefish at the time of the survey. Data collected by the Minnesota Department of Natural Resources during the late summer period of maximum oxythermal stress (July 26th to Aug 24th) in 2024 also indicates unsuitable oxythermal habitat. When adequate oxythermal habitat is unavailable, Lake Whitefish are squeezed into unfavorable, warmer water conditions and experience higher levels of stress.

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

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

One has a maximum depth of 57 feet, per Minnesota DNR data.

The most recent Minnesota DNR survey data for the main sport fish in One is from 2016. Surveys this old should be treated with some caution — fish populations change over time.

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