Marion

Marion Lake is a designated stream trout lake that is managed for Brook Trout. The dissolved oxygen and temperature profiles were measured in August 2022 to monitor habitat for trout. Optimal thermal and oxygen conditions for Brook Trout (10-16°C [50-61°F] and greater than or equal to 5 ppm DO) were not present in August. The coolest water with DO > 5 ppm was 22.9°C (73°F) at a depth of 10 ft. Temperature at a dissolved oxygen concentration of 3 ppm (TDO3) was 21.2°C (70°F) in August. The oxythermal habitat measured in August 2022 was the worst for trout ever measured in Marion Lake in nearly annual monitoring since 2006 with occasional measurements prior to then. In most years Marion Lake has good late summer trout habitat, but some in years (2009, 2016) trout habitat is poor. Marion Lake will occasionally have low oxygen in the winter causing winterkill of trout. Marion is normally stocked with about 660 yearling Brook Trout each spring. Designated stream trout lakes have additional angling regulations. Be sure to consult the current Minnesota Fishing Regulations book for regulations, seasons, and possession limits before fishing designated trout waters.

Marion Lake is a designated stream trout lake that is managed for Brook Trout. The dissolved oxygen and temperature profiles were measured in August 2022 to monitor habitat for trout. Optimal thermal and oxygen conditions for Brook Trout (10-16°C [50-61°F] and greater than or equal to 5 ppm DO) were not present in August. The coolest water with DO > 5 ppm was 22.9°C (73°F) at a depth of 10 ft. Temperature at a dissolved oxygen concentration of 3 ppm (TDO3) was 21.2°C (70°F) in August. The oxythermal habitat measured in August 2022 was the worst for trout ever measured in Marion Lake in nearly annual monitoring since 2006 with occasional measurements prior to then. In most years Marion Lake has good late summer trout habitat, but some in years (2009, 2016) trout habitat is poor. Marion Lake will occasionally have low oxygen in the winter causing winterkill of trout. Marion is normally stocked with about 660 yearling Brook Trout each spring. Designated stream trout lakes have additional angling regulations. Be sure to consult the current Minnesota Fishing Regulations book for regulations, seasons, and possession limits before fishing designated trout waters.

Marion Lake is a designated stream trout lake that is managed for Brook Trout. The dissolved oxygen and temperature profiles were measured in August 2022 to monitor habitat for trout. Optimal thermal and oxygen conditions for Brook Trout (10-16°C [50-61°F] and greater than or equal to 5 ppm DO) were not present in August. The coolest water with DO > 5 ppm was 22.9°C (73°F) at a depth of 10 ft. Temperature at a dissolved oxygen concentration of 3 ppm (TDO3) was 21.2°C (70°F) in August. The oxythermal habitat measured in August 2022 was the worst for trout ever measured in Marion Lake in nearly annual monitoring since 2006 with occasional measurements prior to then. In most years Marion Lake has good late summer trout habitat, but some in years (2009, 2016) trout habitat is poor. Marion Lake will occasionally have low oxygen in the winter causing winterkill of trout. Marion is normally stocked with about 660 yearling Brook Trout each spring. Designated stream trout lakes have additional angling regulations. Be sure to consult the current Minnesota Fishing Regulations book for regulations, seasons, and possession limits before fishing designated trout waters.

Based on Minnesota DNR survey data, anglers target Brook Trout in Marion. See the full species list above for catch rates, size structure, and quality scores.

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

Marion has a maximum depth of 60 feet, per Minnesota DNR data.

The most recent Minnesota DNR survey data for the main sport fish in Marion is from 1989. Surveys this old should be treated with some caution — fish populations change over time.

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