Marquette

Temperature and dissolved oxygen (DO) measurements were collected from the deepest basin in Marquette Lake on August 5th, 2025, to evaluate the quantity and quality of cold, oxygenated water (i.e., oxythermal habitat) available to Cisco, also known as Tullibee, the most sensitive coldwater species present in this lake. During the summer, Cisco require a layer of oxythermal habitat that contains water temperatures below 21.2 degrees C (70.2 degrees F) and dissolved oxygen concentrations above 3.0 mg/L. Based on the profile from the deepest basin (maximum sampled depth 49.2 feet), the water temperature decreased below 21.2 degrees C (70.2 degrees F) at 19.2 feet and the dissolved oxygen concentration decreased to 3.0 mg/L at 19.1 feet at the time of sampling. Therefore, the water column did not contain a layer of water with sufficient temperature and dissolved oxygen for Cisco. Further, the temperature at which dissolved oxygen decreased to 3.0 mg/L (i.e., TDO3, a single variable to characterize oxythermal habitat) was 21.3 degrees C (70.3 degrees F). TDO3 values warmer than 21.2 degrees C (70.2 degrees F) indicate that oxythermal conditions were unsuitable for Cisco 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 2023 indicated marginal oxythermal habitat with a layer of 2.0 feet. Subsequently, the 2024 survey indicated unsuitable oxythermal habitat with no layer of habitat present. When inadequate oxythermal habitat is available, Cisco 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 Marquette Lake on August 5th, 2025, to evaluate the quantity and quality of cold, oxygenated water (i.e., oxythermal habitat) available to Cisco, also known as Tullibee, the most sensitive coldwater species present in this lake. During the summer, Cisco require a layer of oxythermal habitat that contains water temperatures below 21.2 degrees C (70.2 degrees F) and dissolved oxygen concentrations above 3.0 mg/L. Based on the profile from the deepest basin (maximum sampled depth 49.2 feet), the water temperature decreased below 21.2 degrees C (70.2 degrees F) at 19.2 feet and the dissolved oxygen concentration decreased to 3.0 mg/L at 19.1 feet at the time of sampling. Therefore, the water column did not contain a layer of water with sufficient temperature and dissolved oxygen for Cisco. Further, the temperature at which dissolved oxygen decreased to 3.0 mg/L (i.e., TDO3, a single variable to characterize oxythermal habitat) was 21.3 degrees C (70.3 degrees F). TDO3 values warmer than 21.2 degrees C (70.2 degrees F) indicate that oxythermal conditions were unsuitable for Cisco 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 2023 indicated marginal oxythermal habitat with a layer of 2.0 feet. Subsequently, the 2024 survey indicated unsuitable oxythermal habitat with no layer of habitat present. When inadequate oxythermal habitat is available, Cisco 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 Marquette Lake on August 5th, 2025, to evaluate the quantity and quality of cold, oxygenated water (i.e., oxythermal habitat) available to Cisco, also known as Tullibee, the most sensitive coldwater species present in this lake. During the summer, Cisco require a layer of oxythermal habitat that contains water temperatures below 21.2 degrees C (70.2 degrees F) and dissolved oxygen concentrations above 3.0 mg/L. Based on the profile from the deepest basin (maximum sampled depth 49.2 feet), the water temperature decreased below 21.2 degrees C (70.2 degrees F) at 19.2 feet and the dissolved oxygen concentration decreased to 3.0 mg/L at 19.1 feet at the time of sampling. Therefore, the water column did not contain a layer of water with sufficient temperature and dissolved oxygen for Cisco. Further, the temperature at which dissolved oxygen decreased to 3.0 mg/L (i.e., TDO3, a single variable to characterize oxythermal habitat) was 21.3 degrees C (70.3 degrees F). TDO3 values warmer than 21.2 degrees C (70.2 degrees F) indicate that oxythermal conditions were unsuitable for Cisco 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 2023 indicated marginal oxythermal habitat with a layer of 2.0 feet. Subsequently, the 2024 survey indicated unsuitable oxythermal habitat with no layer of habitat present. When inadequate oxythermal habitat is available, Cisco are squeezed into unfavorable, warmer water conditions and experience higher levels of stress.

Based on Minnesota DNR survey data, anglers target Muskellunge, Walleye, Black Crappie, Hybrid Sunfish, and Rock Bass in Marquette. 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 Marquette. Check the DNR LakeFinder page for current access details before you go.

Marquette has a maximum depth of 51 feet, per Minnesota DNR data.

The most recent Minnesota DNR survey data for the main sport fish in Marquette is from 2022.

Yes — Marquette has confirmed zebra mussel. Clean, drain, and dry your equipment to avoid spreading invasives to other waters.

No — Marquette has no lake-specific regulations in the 2026 Minnesota DNR regulations, so statewide Minnesota limits apply. The statewide muskellunge limit is: 1, minimum size 54". Verify current rules with the Minnesota DNR before keeping fish.