VHS (Viral Hemorrhagic Septicemia)
Invasive SpeciesFound in 7 lakes
VHS (Viral Hemorrhagic Septicemia) is documented in 7 lakes across our dataset — 7 in Minnesota. Each state's natural-resources agency maintains an official "infested waters" roster that triggers boat-launch decontamination protocols. 7 lakes — narrow enough that aggressive containment is still on the table. Most upper-Midwest invasives that established here did so quietly over a decade before anyone noticed, so a low number today is not a guarantee for tomorrow.
The presence of VHS (Viral Hemorrhagic Septicemia) does not directly change a lake's LakeGrade rubric score — the grade measures the water itself, not the species inhabiting it. But invasive presence is a meaningful adjacent signal worth reading alongside the grade.
Lakes with VHS (Viral Hemorrhagic Septicemia)
| Lake | County | State | Grade | Depth |
|---|---|---|---|---|
| Superior Lake | Cook | MN | A | - |
| Superior Lake | St. Louis | MN | A | - |
| Little Lake Deep | Cook | MN | B | - |
| Teal Lake Deep | Cook | MN | C | - |
| Duluth Lake | St. Louis | MN | D | - |
| Little Lake Inlet | Cook | MN | F | - |
| Little Lake Landing | Cook | MN | F | - |
Frequently Asked Questions
How many lakes have vhs (viral hemorrhagic septicemia)?
VHS (Viral Hemorrhagic Septicemia) has been documented in 7 graded lakes: 7 in Minnesota.
Does vhs (viral hemorrhagic septicemia) affect water quality?
Invasive species can significantly affect lake ecosystems. They may alter nutrient cycling, displace native species, and change water clarity. Lakes with vhs (viral hemorrhagic septicemia) should be monitored for changes in water quality over time.
Invasives Found With VHS (Viral Hemorrhagic Septicemia)
Source: EPA National Aquatic Resource Surveys, 2026.