Fish Consumption Guide · Updated 2026-07-25
Is It Safe to Eat Fish from Skjermo Lake?
Standard panfish from Skjermo Lake are 1 meal per week under statewide guidance.
Quick Answer
Skjermo Lake, Divide County, ND — fish consumption guidance is published by the state health agency; see the official advisory page for current species limits.
Skjermo Lake is classified as mesotrophic, which influences mercury cycling but does not by itself determine fish-tissue mercury levels.
No curated species guidance for Skjermo Lake — fish consumption advisories for North Dakota lakes are published by the North Dakota health department. See the official advisory page linked below for current species limits and any waterbody-specific advisory.
Check the Official Source
For waterbody-specific advisories (PFAS, PCBs, dioxins, lake-specific mercury) beyond the statewide rules, always consult the official North Dakota fish consumption advisory page for Skjermo Lake.
Official North Dakota Advisory →Why Mercury Builds Up in Some Fish
Mercury enters lakes from atmospheric deposition (coal-fired power plants are the dominant US source), local geology, and historical mining or industrial activity. In water, it converts to methylmercury, which bioaccumulates: small fish absorb it, larger fish eat smaller fish, and apex predators end up with the highest concentrations.
That's why walleye, northern pike, muskellunge, and lake trout carry the strictest advisories — they're top predators that live a long time. Smaller, faster-growing fish like bluegill, crappie, and yellow perch have much lower mercury and can usually be eaten weekly.
In Minnesota, the Northeast (St. Louis, Lake, Cook counties — the Arrowhead) has higher background mercury due to mining legacy and forested wetlands that favor methylmercury production. MN MDH applies 2-inch shorter length cutoffs for walleye and pike in this zone.
For PFAS ("forever chemicals"), the contamination is point-source: industrial discharges, military firefighting foam, paper mill waste. Bay of Green Bay (WI) and select Northeast MN lakes have the most active PFAS advisories. PFAS is not well-correlated with mercury, so a lake with low Hg can still have a PFAS advisory.
Frequently Asked Questions
Is it safe to eat fish from Skjermo Lake?
Yes, with state-published limits. Standard panfish from Skjermo Lake are 1 meal per week under statewide guidance. Skjermo Lake, Divide County, ND — fish consumption guidance is published by the state health agency; see the official advisory page for current species limits. For waterbody-specific advisories beyond the statewide rules, check the official North Dakota health department query linked on this page.
What is the most restrictive species at Skjermo Lake?
Walleye and northern pike are the most restricted species at Skjermo Lake. Mercury accumulates with size, so length cutoffs apply.
Who is in the "sensitive population" for fish consumption?
In Minnesota, sensitive populations are children under 15 and people 15+ who are or could become pregnant, are breastfeeding, or plan to breastfeed. Wisconsin defines this similarly. Sensitive populations should follow the most protective guidelines for all species.
Why are walleye and northern pike more restricted than panfish?
Mercury bioaccumulates up the food chain. Walleye, pike, musky, and lake trout are top predators that eat smaller fish, concentrating mercury in their flesh. Panfish like bluegill, crappie, and yellow perch eat insects and zooplankton — much lower mercury.
What about PFAS in fish from Skjermo Lake?
PFAS (forever chemicals) are an emerging concern in fish, especially near industrial/military sites and in the Bay of Green Bay (WI), Yahara chain (WI), and select Northeast Minnesota lakes. The North Dakota health department publishes waterbody-specific PFAS advisories as sampling identifies elevated levels. Check the official query for current PFAS-specific guidance for Skjermo Lake.
Related
This page applies statewide guidance from the North Dakota health department to fish species documented at Skjermo Lake in DNR survey data. It does not replace lake-specific advisories published by health agencies. Always check the official query (linked above) for the most current guidance, especially for PFAS, PCBs, and dioxins which can require waterbody-specific advice. Last updated: 2026-07-25.