Missionary

Temperature and dissolved oxygen (DO) measurements were collected from the deepest basin in Missionary Lake on August 19th, 2025, 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 (maximum sampled depth 65.6 feet), the water temperature decreased below 8.8 degrees C (47.8 degrees F) at 28.8 feet and the dissolved oxygen concentration decreased to 3.0 mg/L at 40.1 feet at the time of sampling. The thickness of this layer of water in the water column was 11.2 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 6.0 degrees C (42.8 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 during the late summer period of maximum oxythermal stress (July 26th to Aug 24th) also indicated suitable oxythermal habitat in 2024, with a similar layer thickness and TDO3 (12.6 and 7.2 respectively). 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 (DO) measurements were collected from the deepest basin in Missionary Lake on August 19th, 2025, 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 (maximum sampled depth 65.6 feet), the water temperature decreased below 8.8 degrees C (47.8 degrees F) at 28.8 feet and the dissolved oxygen concentration decreased to 3.0 mg/L at 40.1 feet at the time of sampling. The thickness of this layer of water in the water column was 11.2 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 6.0 degrees C (42.8 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 during the late summer period of maximum oxythermal stress (July 26th to Aug 24th) also indicated suitable oxythermal habitat in 2024, with a similar layer thickness and TDO3 (12.6 and 7.2 respectively). 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 (DO) measurements were collected from the deepest basin in Missionary Lake on August 19th, 2025, 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 (maximum sampled depth 65.6 feet), the water temperature decreased below 8.8 degrees C (47.8 degrees F) at 28.8 feet and the dissolved oxygen concentration decreased to 3.0 mg/L at 40.1 feet at the time of sampling. The thickness of this layer of water in the water column was 11.2 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 6.0 degrees C (42.8 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 during the late summer period of maximum oxythermal stress (July 26th to Aug 24th) also indicated suitable oxythermal habitat in 2024, with a similar layer thickness and TDO3 (12.6 and 7.2 respectively). When inadequate oxythermal habitat is available, Lake Trout are squeezed into unfavorable, warmer water conditions and experience higher levels of stress.

No Minnesota DNR fish survey data is available for Missionary yet.

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

Missionary has a maximum depth of 71 feet, per Minnesota DNR data.

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