August Lake
Lake County, Minnesota - DNR stocking history, depth and survey data
Minnesota · Minnesota Department of Natural Resources (DNR) · DOW 38069100
August Lake has no DNR stocking rows in LakeFinder; this page carries its DNR depth, access and survey data.
- August Lake shows no stocking records in Minnesota DNR LakeFinder as of .
- Maximum depth 19 ft; surface area 229 acres, 219 littoral acres, 6.0 miles of shoreline, per the DNR lake survey.
- Average water clarity (Secchi depth) 6.5 ft.
- Fish species DNR lists here: burbot, largemouth bass, northern pike, rock bass, walleye, white sucker, yellow perch.
- 1 public access on the DNR list.
- Most recent DNR fish survey: (standard survey).
- Lake County, nearest town Isabella; DNR lake number (DOW) 38069100.
Depth map
Bathymetric contours from the Minnesota DNR lake survey mapped 8/12/1980 (orig map); depths in feet. Simplified for the web; not for navigation.
Public accesses
| Type | Owner | Where |
|---|---|---|
| earthen ramp | USF | From USFS Rd. #377 (Tomahawk Rd) take USFS Rd. #388 north to the August Lake Road- go west to the north end of August Lake. Short distance to the lake. - USFS has removed the large boulder and small trailers can be backed in. |
DNR fish survey, 2019
| Species | Gear | Catch per net | Total catch | Avg lb |
|---|---|---|---|---|
| Yellow perch | 1/4-in trap nets | 27.17 | 163 | 0.00 |
| Golden shiner | 1/4-in trap nets | 4.17 | 25 | 0.00 |
| Brassy minnow | 1/4-in trap nets | 2.33 | 14 | 0.00 |
| Largemouth bass | 1/4-in trap nets | 1.83 | 11 | 0.00 |
| Blacknose shiner | 1/4-in trap nets | 1.83 | 11 | 0.00 |
| Rock bass | 1/4-in trap nets | 1.00 | 6 | 0.00 |
| Tadpole madtom | 1/4-in trap nets | 0.67 | 4 | 0.00 |
| White sucker | 1/4-in trap nets | 0.50 | 3 | 2.61 |
| Walleye | Standard gill nets | 9.67 | 58 | 0.88 |
| White sucker | Standard gill nets | 6.67 | 40 | 2.36 |
| Yellow perch | Standard gill nets | 3.50 | 21 | 0.12 |
| Northern pike | Standard gill nets | 2.83 | 17 | 1.41 |
| Rock bass | Standard gill nets | 1.17 | 7 | 0.32 |
| Walleye | Standard trap nets | 0.78 | 7 | 1.26 |
| Northern pike | Standard trap nets | 0.44 | 4 | 1.05 |
| Rock bass | Standard trap nets | 0.33 | 3 | 0.13 |
| White sucker | Standard trap nets | 0.33 | 3 | 3.01 |
Catch per net (CPUE) is the DNR survey's count per gill net or trap net set; higher means more of that species were sampled, not a fishing forecast. Top species per gear shown; where we have no verified common name for a DNR code, the code itself is shown.
August Lake is located about 15 miles northwest of Isabella within the Superior National Forest. There is a small public access on August Lake Road less than a mile west of Forest Service 388 with limited parking and an earthen ramp suitable for small boats and canoes. This is the first survey to be completed since Walleye stocking was discontinued in 2015. The 2019 survey had the highest Walleye gill net catch to date. Size was good with an average length of about 13 inches and average weight about 0.9 pounds. Age analysis identified nine year classes with Walleye ranging from age-1 to age-9. Significant natural reproduction was documented with the 2015, 2017, and 2018 year classes well represented in the sample. Conversely, stocked year classes accounted for just 12% of the Walleye captured. Growth remained average for the area and similar to previous assessments with fish reaching 13.7 inches at age-4. Additional surveys are needed to determine if natural reproduction can sustain the population at this level into the future. Northern Pike catch was within the normal range for the lake and similar to previous surveys. Size in gill nets was poor with pike averaging just 18.9 inches and 1.41 pounds. Historic survey data suggest Northern Pike rarely reach the size preferred by anglers, but an occasional big fish is reported. Rock Bass, White Sucker, and Yellow Perch catches were all within the normal range for the lake and similar to previous surveys. Other species captured in quarter-inch mesh trap nets included Blacknose Shiner, Bluntnose Minnow, Burbot, Golden Shiner, Largemouth Bass, and Tadpole Madtom. This was this first time Largemouth Bass have been sampled in the lake and the presence of several young-of-the-year fish indicates some natural reproduction is taking place. The source of the spawning stock is not known.
Minnesota DNR survey narrative, .
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