Skip to main content
LakeQuality
C

Baldwin Lake Northwest Basin

Cass County, WisconsinLimited DataMesotrophic

Baldwin Lake Northwest Basin is a mesotrophic lake in Cass County, MI. Water quality is graded C based on 1 sampling years through 2023. The lake supports 25 documented fish species including Blacknose shiner, Blackside darter, and Blackstripe topminnow. Compared to the 22 other monitored lakes in Cass County, Baldwin Lake Northwest Basin ranks #16 for water quality.

Source: EPA Water Quality Portal sampling records, local state DNR records, last sampled 2023-09-13. Grade methodology: LakeGrade methodology.

Swimming Safety

Generally safe for swimming, moderate water quality

Water Quality Grade: C, Fair

Moderate clarity, visible to about 8 ft. Trophic State Index: 47.

MetricValueGrade
Water Clarity (Secchi Depth)8 ftC
PhosphorusNo data
Chlorophyll-a (Algae)No data
Trophic State Index (TSI)47Mesotrophic

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 Baldwin Lake Northwest Basin (14-day solunar calendar)

→ Is it safe to eat fish from Baldwin Lake Northwest Basin? (mercury & PFAS guide)

Baldwin Lake Northwest Basin fishing regulations (limits, seasons, special rules)

Location

Loading map…

County Ranking

Ranked #16 of 23 lakes in Cass County

Cleaner Lakes Within 30 Miles

Baldwin Lake Northwest Basin holds Grade C. 2 nearby lakes hold higher grades.

See full comparison →

Nearby Lakes in Cass County

EPA Impairment Status

Baldwin Lake Northwest Basin is officially listed as impaired under Clean Water Act §303(d) in the 2024 EPA reporting cycle (IR category 5).

Causes of impairment

Oxygen depletion (low DO)

Source: EPA ATTAINS assessment unit MI040500011303-05 · Official waterbody report · Matched by proximity (0.92 km)

Data Sources

Water quality data from the EPA Water Quality Portal

Impairment status from EPA ATTAINS 303(d) database

Grading methodology based on Metropolitan Council standards

Most recent sample: 2023-09-13

Monitoring stations: 1