C

Upper Hamlin Lake West Basin East of the Narrows

Mason County, WisconsinEutrophic

Upper Hamlin Lake West Basin East of the Narrows is a productive, nutrient-rich eutrophic lake in Mason County, MI. Water quality is graded C based on 2 sampling years through 2023. The lake supports 6 documented fish species including Blackchin shiner, Bluntnose minnow, and Mimic shiner. Compared to the 7 other monitored lakes in Mason County, Upper Hamlin Lake West Basin East of the Narrows ranks #8 for water quality.

Source: EPA Water Quality Portal sampling records, local state DNR records, last sampled 2023-09-12. Grade methodology: LakeGrade methodology.

Swimming Safety

Generally safe for swimming, moderate water quality

Water Quality Grade: C, Fair

Murky, only visible to about 6.5 ft. Chlorophyll-a: 11.5 µg/L. Trophic State Index: 52.

Metric	Value	Grade
Water Clarity (Secchi Depth)	6.5 ft	D
Phosphorus	No data
Chlorophyll-a (Algae)	11.5 µg/L	C
Trophic State Index (TSI)	52	Eutrophic

High nutrients, frequent algae, reduced clarity

Fish Species

Blackchin shiner Bluntnose minnow Mimic shiner Sand shiner Western banded killifish Yellow perch

Click a species to see all Wisconsin and Minnesota lakes where it is found.

→ Best fishing times for Upper Hamlin Lake West Basin East of the Narrows (14-day solunar calendar)

→ Is it safe to eat fish from Upper Hamlin Lake West Basin East of the Narrows? (mercury & PFAS guide)

→ Upper Hamlin Lake West Basin East of the Narrows fishing regulations (limits, seasons, special rules)

Location

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County Ranking

Ranked #8 of 8 lakes in Mason County

Cleaner Lakes Within 30 Miles

Upper Hamlin Lake West Basin East of the Narrows holds Grade C. 2 nearby lakes hold higher grades.

See full comparison →

Nearby Lakes in Mason County

Chancellor Lake

Chancellor Lake Central Basin

Gun Lake Central Basin; Freesoil Township

Lower Hamlin Lake North Central Basin South of the Narrows

More Wisconsin Lake Rankings

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Top 25 by overall water quality score

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Grade A/B + low algae filter

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Panfish-rich, public access

All Wisconsin lakes

Full state directory

Other Grade C Lakes in Wisconsin

Shavehead Lake East Basin; Porter Township

Cass County · Clarity: 7 ft

Leelanau County · Clarity: 9.5 ft

Van Etten Lake North Central Basin; Oscoda Township

Iosco County · Clarity: 5.5 ft

Muskegon County · Clarity: 6.8 ft

Little Lake Twenty

Gladwin County · Clarity: 9 ft

Montmorency County · Clarity: 9 ft

Eutrophic Lakes in Wisconsin

Kimball Lake Van Etten Lake North Central Basin; Oscoda Township Community College Pond Pentwater Lake Northwest Basin; Pentwater Township

Data Sources

Water quality data from the EPA Water Quality Portal

Grading methodology based on Metropolitan Council standards

Most recent sample: 2023-09-12

Monitoring stations: 1