Ottertrack Lake
Lake County, Minnesota - DNR stocking history, depth and survey data
Minnesota · Minnesota Department of Natural Resources (DNR) · DOW 38021100
Ottertrack Lake has no DNR stocking rows in LakeFinder; this page carries its DNR depth, access and survey data.
- Ottertrack Lake shows no stocking records in Minnesota DNR LakeFinder as of .
- Maximum depth 116 ft; surface area 1,134 acres, 251 littoral acres, 38.9 miles of shoreline, per the DNR lake survey.
- Average water clarity (Secchi depth) 19.0 ft.
- Fish species DNR lists here: bluegill, burbot, lake whitefish, northern pike, rock bass, smallmouth bass, tullibee (cisco), walleye, white sucker.
- 4 public accesses on the DNR list.
- Most recent DNR fish survey: (targeted survey).
- Lake County, nearest town Ely; DNR lake number (DOW) 38021100.
Depth map
Bathymetric contours from the Minnesota DNR lake survey; depths in feet. Simplified for the web; not for navigation.
Public accesses
| Type | Owner | Where |
|---|---|---|
| CA | USF | 5 rod portage from Little Knife Lake. |
| CA | USF | 80 rod portage from Swamp Lake. |
| CA | USF | 80 rod portage from Ester Lake. |
| CA | USF | 50 rod portage from Gijikiki Lake. |
DNR fish survey, 2025
Temperature and dissolved oxygen measurements were collected from the deepest basin in Ottertrack Lake on July 30th, 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 (Lake Whitefish and 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 78.7 feet), the water temperature decreased to 8.8 degrees C (47.8 degrees F) at 30.3 feet and the dissolved oxygen concentration decreased to 3.0 mg/L at 49.4 feet at the time of sampling. This layer in the water column was 19.1 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 4.6 degrees C (40.3 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. 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, .
All Minnesota stockings · every Minnesota lake with a page · state CSV · this lake on DNR LakeFinder
Stocking rows, depths, accesses and survey figures are Minnesota DNR LakeFinder data as of 2026-09-02; contours are the DNR bathymetric survey. Regulations, slot limits and special rules are on the DNR page linked above, not here.
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