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North Long Tom Lake is located three miles east and two miles north of Ortonville. The lake is 64 acres and is connected to Long Tom Lake by a culvert under County Road 67. North Long Tom is prone to winterkill. Low water, drought, early ice and a thick snowpack resulted in low oxygen and winterkill in North Long Tom Lake during the winter of 2022-2023. Almost no measurable oxygen was detected by mid-February. Thousands of dead fish were present during ice-out. Walleye fry were stocked in the spring of 2023. This standard survey revealed that although the winterkill was severe, it wasn't complete. Standard sampling using a gill net and trap nets captured black bullheads and common carp during spring. Small mesh trap nets were used to assess natural reproduction in late summer. The catch primarily consisted of fathead minnows, black bullheads and common carp, however a moderate number of young-of-year walleyes were also caught. The fishery will require some time to recover from the winterkill and good fishing will likely be at least two years into the future.

North Long Tom Lake is located three miles east and two miles north of Ortonville. The lake is 24 acres and is connected to Long Tom Lake by a culvert through County Road 67. North Long Tom is prone to winterkill. The last known winterkill occurred during the winter of 2012-13 and most game fish perished. Near record amounts of snow fell in the area during the winter of 2018-2019. No dissolved oxygen measurements were taken on North Long Tom but it is likely oxygen concentration was similar to that of Long Tom Lake. In Long Tom, by mid-January dissolved oxygen was less than 1 ppm in most of the water column and it continued to drop in subsequent measurements. Similar to Long Tom, winterkill was suspected in North Long Tom. Hundreds of dead fish were observed during ice-out on both Long Tom and North Long Tom lakes. Common Carp were most abundant, but some Black Crappies and Black Bullheads were present. The most recent fish assessment in 2017 indicated quality Walleye, Yellow Perch and Black Crappie populations existed in North Long Tom. In spring, one standard lake survey gill net was set to determine the presence of gamefish and stocking needs. Twenty-two fish were caught including, in order of abundance: Black Bullhead, White Sucker, Common Carp and Walleye. The Walleye were assumed to have migrated downstream from Thielke Lake, which did not winterkill. Based on the netting, a significant winterkill of gamefish occurred. Walleye fry were stocked into North Long Tom during spring of 2019.

North Long Tom Lake is located three miles east and two miles north of Ortonville. The lake is 24 acres and is connected to Long Tom Lake by a culvert through County Road 67. North Long Tom can provide suitable spawning and nursery habitat for Northern Pike and Yellow Perch, particularly during springs with favorable water levels. North Long Tom is entirely within a DNR Wildlife Management Area and fishing is limited to carry-in boats, shore or ice angling. The lake is prone to winterkill. The last winterkill happened the winter of 2012-13 and most game fish perished. North Long Tom is not stocked with fish. Migration from Long Tom Lake downstream and Walleye rearing ponds upstream has resulted in the reestablishment of a substantial game fish population. This standard survey was conducted to collect routine fish population data using gill nets and trap nets. These data can be compared to historical standard and targeted survey data from North Long Tom Lake. Walleyes were abundant in 2017 and most were 12-15 inches. No Northern Pike were caught during 2017, which was unexpected since they had been abundant during the last survey in 2014. Northern Pike have experienced widely fluctuating populations in this lake, likely due to highly variable water levels during early spring when they spawn. Yellow perch were abundant with most of them 7.5-9.5 inches, and some up to 11 inches. Black Crappie were caught in moderate numbers. Their average length was 9.5 inches with some of them up to 11 inches. Other fish caught in 2017 were Black Bullheads, Common Carp, and White suckers.

Based on Minnesota DNR survey data, anglers target Yellow Perch, Walleye, Black Crappie, Northern Pike, and Bluegill in Unnamed. See the full species list above for catch rates, size structure, and quality scores.

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

Unnamed has a maximum depth of 13 feet, per Minnesota DNR data.

The most recent Minnesota DNR survey data for the main sport fish in Unnamed is from 2017. Surveys this old should be treated with some caution — fish populations change over time.

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