Fraser Lake

Lake County, Minnesota - DNR stocking history, depth and survey data

Minnesota · Minnesota Department of Natural Resources (DNR) · DOW 38037200

Fraser Lake has no DNR stocking rows in LakeFinder; this page carries its DNR depth, access and survey data.

• Fraser Lake shows no stocking records in Minnesota DNR LakeFinder as of September 2, 2026.
• Maximum depth 105 ft; surface area 695 acres, 158 littoral acres, 14.6 miles of shoreline, per the DNR lake survey.
• Average water clarity (Secchi depth) 11.0 ft.
• 1 public access on the DNR list.
• Most recent DNR fish survey: August 3, 2025 (targeted survey).
• Lake County, nearest town Prairie Portage; DNR lake number (DOW) 38037200.

Depth map

Bathymetric contours from the Minnesota DNR lake survey mapped 7/26/1983 (orig map); depths in feet. Simplified for the web; not for navigation.

Public accesses

DNR fish survey, 2025

Temperature and dissolved oxygen measurements were collected from the deepest basin in Fraser Lake on August 3rd, 2025. This was done 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). 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 data collected from the deepest basin (maximum sampled depth was 101.0 feet), the water temperature decreased to 8.8 degrees C (47.8 degrees F) at 30.3 feet and the dissolved oxygen concentration stayed greater than 3.0 mg/L for the entire sampled depth. This layer in the water column was 70.7 feet, indicating oxythermal habitat for Lake Trout was present. Further, the temperature at which dissolved oxygen decreased to 3.0 mg/L (i.e., TDO3, a single variable to characterize oxythermal habitat) was never reached because dissolved oxygen remained above 3.0 mg/L throughout the sampled depths. In this case, the minimum temperature, 5.3 degrees C (41.5 degrees F), was substituted as TDO3. 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 period of maximum oxythermal stress (July 26th to Aug 24th) in 2024 also indicated suitable oxythermal habitat. When adequate oxythermal habitat is not available, Lake Trout are squeezed into unfavorable, warmer water conditions and experience higher levels of stress.

Minnesota DNR survey narrative, August 3, 2025.

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