Gun

Temperature and dissolved oxygen (DO) measurements were collected from the deepest basin in Gun Lake on July 30th, 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 (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 (maximum sampled depth 111.5 feet), the water temperature decreased below 8.8 degrees C (47.8 degrees F) at 24.3 feet and the dissolved oxygen concentration decreased to 3.0 mg/L at 106.6 feet at the time of sampling. The thickness of this layer of water in the water column was 82.3 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 4.0 degrees C (39.2 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. This is the first Minnesota Department of Natural Resources temperature and dissolved oxygen survey completed on Gun Lake during the late summer period of maximum oxythermal stress (July 26th to Aug 24th). 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 Gun Lake on July 30th, 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 (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 (maximum sampled depth 111.5 feet), the water temperature decreased below 8.8 degrees C (47.8 degrees F) at 24.3 feet and the dissolved oxygen concentration decreased to 3.0 mg/L at 106.6 feet at the time of sampling. The thickness of this layer of water in the water column was 82.3 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 4.0 degrees C (39.2 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. This is the first Minnesota Department of Natural Resources temperature and dissolved oxygen survey completed on Gun Lake during the late summer period of maximum oxythermal stress (July 26th to Aug 24th). 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 Gun Lake on July 30th, 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 (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 (maximum sampled depth 111.5 feet), the water temperature decreased below 8.8 degrees C (47.8 degrees F) at 24.3 feet and the dissolved oxygen concentration decreased to 3.0 mg/L at 106.6 feet at the time of sampling. The thickness of this layer of water in the water column was 82.3 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 4.0 degrees C (39.2 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. This is the first Minnesota Department of Natural Resources temperature and dissolved oxygen survey completed on Gun Lake during the late summer period of maximum oxythermal stress (July 26th to Aug 24th). 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 Lake Trout and Yellow Perch in Gun. 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 Gun. Check the DNR LakeFinder page for current access details before you go.

Gun has a maximum depth of 135 feet and a mean depth of 35.8 feet, per Minnesota DNR data.

The most recent Minnesota DNR survey data for the main sport fish in Gun is from 2023.

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

No — Gun has no lake-specific regulations in the 2026 Minnesota DNR regulations, so statewide Minnesota limits apply. The statewide perch limit is: 20 daily and 40 in possession. Verify current rules with the Minnesota DNR before keeping fish.