Sargent Lake
Keweenaw County, WisconsinMesotrophic
Sargent Lake is a mesotrophic lake in Keweenaw County, MI. Water quality is graded A based on 2 sampling years through 2024. The lake supports 1 documented fish species including Blackchin shiner. Compared to the 18 other monitored lakes in Keweenaw County, Sargent Lake ranks #8 for water quality.
Source: EPA Water Quality Portal sampling records, local state DNR records, last sampled 2024-08-28. Grade methodology: LakeGrade methodology.
Swimming Safety
Excellent for swimming, crystal clear water with minimal algae
Water Quality Grade: A, Excellent
Good clarity, visible to about 10.4 ft. Phosphorus level: 17.3 µg/L. Trophic State Index: 44.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 10.4 ft | B |
| Phosphorus | 17.3 µg/L | A |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 44 | Mesotrophic |
Moderate nutrients, good water quality
Fish Species
Click a species to see all Wisconsin and Minnesota lakes where it is found.
→ Best fishing times for Sargent Lake (14-day solunar calendar)
→ Is it safe to eat fish from Sargent Lake? (mercury & PFAS guide)
→ Sargent Lake fishing regulations (limits, seasons, special rules)
Location
County Ranking
Ranked #8 of 19 lakes in Keweenaw County
Nearby Lakes in Keweenaw County
More Wisconsin Lake Rankings
Other Grade A Lakes in Wisconsin
Mecosta County · Clarity: 12.8 ft
Benzie County · Clarity: 13.5 ft
Clare County · Clarity: 15 ft
Kalkaska County · Clarity: 16 ft
Gogebic County · Clarity: 18 ft
Iron County · Clarity: 16 ft
Mesotrophic Lakes in Wisconsin
Data Sources
Water quality data from the EPA Water Quality Portal
Grading methodology based on Metropolitan Council standards
Most recent sample: 2024-08-28
Monitoring stations: 1