South Dakota Fish Consumption Advisories
Fish and seafood are an important part of a healthy diet. Fish and shellfish, collectively referred to as fish, contain high-quality protein and other essential nutrients, are low in saturated fat, and contain omega-3 fatty acids. You should eat 8 to 12 ounces of a variety of fish every week from choices that are lower in mercury and high in omega-3 fatty acids. The nutritional value of fish and seafood is important during growth and development before birth, in early infancy for breastfed infants, in childhood, and adults.
Women who are pregnant, might become pregnant, are breastfeeding, and young children should consume fish based on 3 categories:
1) Best Choices
2) Good Choices
3) Fish to Avoid
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Eat 8-12 ounces (2-3 servings) of a variety of fish a week from the “Best Choices” list OR 1 serving from the “Good Choices” list
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The “Best Choices” have the lowest levels of mercury
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A serving for an adult is 4 ounces
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The “Fish to Avoid” list includes 7 types of fish that typically have higher mercury levels
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Tilefish from the Gulf of Mexico, shark, swordfish, orange roughy, bigeye tuna, marlin, and king mackerel
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For young children, 1-2 servings of fish a week starting at age 2
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Serving sizes should be smaller and adjusted for age and total calorie needs.
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A serving for children age 4-7 is 2 ounces
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When eating fish you or others have caught from streams, rivers, and lakes, pay attention to fish advisories on those water bodies. Please check the table below for species and sizes of fish from South Dakota bodies of water where limited consumption is advised.
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If advice isn't available, eat only one serving and no other fish that week.
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Clean and trim fish of fat and skin, since locally-caught fish may contain contaminants besides mercury that can be reduced by proper trimming and cooking (e.g. broiling instead of frying can reduce some contaminants by letting fat drip away from the fish).
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Find more detail on this mercury and fish consumption FAQ

Consumption Advisories for South Dakota Rivers and Lakes
Fish from South Dakota lakes and rivers are tested for metals, pesticides, and PCBs as a collaborative effort of the South Dakota Departments of Game, Fish & Parks, Agriculture & Natural Resources, and Health. Please check the table below for species and sizes of fish from South Dakota bodies of water where limited consumption is advised. For a complete table of water bodies tested in South Dakota, visit this Department of Agriculture and Natural Resources website.
CURRENT MERCURY FISH CONSUMPTION ADVISORIES
County | Lake | Fish Species |
Brookings/Kingsbury | Twin Lakes | Walleye - 18" & larger Northern Pike - 19" & larger |
Brown | Elm Lake | Walleye - 25" & larger |
Butte | Newell Lake |
Walleye - 18" & larger Northern Pike - over 18" |
Clark | Reid Lake Swan Lake
Dry #2 |
Walleye - over 23" Walleye - over 21"
Walleye - 22" & larger |
Codington | Long Lake | Walleye - over 17" |
Corson | Pudwell Dam | Walleye -18" & larger Black Crappie - over 12" |
Day | Bitter Lake
Hazeldon Lake Lake Minnewasta Lardy Lake Lynn Lake Middle Lynn Lake |
Walleye - all sizes
Walleye -18" & larger Walleye -25" & larger Walleye -18" & larger Walleye -18" & larger Northern Pike - over 26" |
Dewey | Lake Isabel
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Northern Pike - 25" & larger Northern Pike - 26" & larger |
Kingsbury/Brookings | Twin Lakes | Walleye - 18" & larger Northern Pike - 19" & larger |
Marshall | North & South Buffalo Lake | Walleye - 21" & larger |
McCook/Minnehaha | North Island Lake | Walleye - 18" & larger Smallmouth Bass - 18" & larger |
McPherson | Kiesz Lake | Walleye - over 16" |
Minnehaha | Twin Lakes |
Walleye - all sizes |
Pennington | New Wall Lake | Black and White Crappies - over 13" Largemouth bass - over 16" |
Perkins | Coal Springs Reservoir | Northern Pike - over 25" |
Potter | Lake Hurley | Largemouth Bass - 18" & larger |
Tripp | Lake Roosevelt |
Largemouth Bass -18" & larger Northern Pike - over 24" |
For more information contact: | Aaron Leingang, SD Dept. of Agriculture and Natural Resources, 605-773-3351 John Lott, SD Dept. of Game, Fish & Parks, 605-773-4508 John Osburn, SD Dept. of Health, 605-394-6064 |
Related links
- South Dakota Department of Agriculture and Natural Resources
- South Dakota Department of Game, Fish & Parks
- South Dakota Department of Health
- Centers for Disease Control & Prevention, Agency for Toxic Substances and Disease Registry
- Eating Fish: What Pregnant Women and Parents Should Know - FDA & EPA