Ram

Temperature and dissolved oxygen (DO) measurements were collected from the deepest basin in Ram Lake on August 6th, 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 32.8 feet), the water temperature never decreased below 8.8 degrees C (47.8 degrees F) and the dissolved oxygen concentration decreased to 3.0 mg/L at 27.8 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 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 10.5 degrees C (50.9 degrees F). TDO3 values warmer than 8.8 degrees C (47.8 degrees F) indicate that oxythermal conditions were unsuitable 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) in 4 years, between 1956-2024, indicate unsuitable oxythermal habitat in all years when surveyed. 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 Ram Lake on August 6th, 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 32.8 feet), the water temperature never decreased below 8.8 degrees C (47.8 degrees F) and the dissolved oxygen concentration decreased to 3.0 mg/L at 27.8 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 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 10.5 degrees C (50.9 degrees F). TDO3 values warmer than 8.8 degrees C (47.8 degrees F) indicate that oxythermal conditions were unsuitable 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) in 4 years, between 1956-2024, indicate unsuitable oxythermal habitat in all years when surveyed. 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 Ram Lake on August 6th, 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 32.8 feet), the water temperature never decreased below 8.8 degrees C (47.8 degrees F) and the dissolved oxygen concentration decreased to 3.0 mg/L at 27.8 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 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 10.5 degrees C (50.9 degrees F). TDO3 values warmer than 8.8 degrees C (47.8 degrees F) indicate that oxythermal conditions were unsuitable 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) in 4 years, between 1956-2024, indicate unsuitable oxythermal habitat in all years when surveyed. 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 Rainbow Trout and Lake Trout in Ram. 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 Ram. Check the DNR LakeFinder page for current access details before you go.

Ram has a maximum depth of 40 feet, per Minnesota DNR data.

The most recent Minnesota DNR survey data for the main sport fish in Ram is from 1988. Surveys this old should be treated with some caution — fish populations change over time.

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