Baldwins Lake
Cass County, Michigan262 acresView mapDirections
EGLE publishes the water-quality measurements for Baldwins Lake. Here is what has been measured.
- Impaired · Oxygen depletion (low DO)
- 55 ft max depth
- Limited data
Baldwins Lake in Cass County, Michigan has water-quality measurements published by EGLE, shown here as reported. Water clarity: 8 ft visibility. Maximum depth: 55 ft. Surface area: 262.4 acres.
Free interactive depth-contour map of Baldwins Lake, reaching a maximum surveyed depth of 55 ft. Toggle Depth contours to overlay the bathymetric survey lines. Contour data from Michigan DNR.
Baldwins Lake is a 262-acre lake in Cass County, Michigan with a maximum depth of 55 feet. Overall water quality is improving over recent sampling years. The lake supports 33 documented fish species including Blackchin shiner, Blacknose shiner, and Blackside darter.
Source: EPA Water Quality Portal sampling records, EGLE, last sampled 2022-09-23. Methodology: how these readings are compared.
What Baldwins Lake is good for
From access and monitoring records, not editorial picks.
- Fishing33 species recorded
- Deep water55 ft surveyed max depth
Swimming conditions
No readingLimited data
Nutrient and algae readings are not a swimming clearance. Baldwins Lake is listed impaired under Clean Water Act §303(d) (IR 5) for oxygen depletion (low DO). Check local advisories before you swim.
Whether Baldwins Lake is safe to swim in today is a call for the Michigan Department of Environment, Great Lakes, and Energy (EGLE) and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.
Water quality measurements for Baldwins Lake
These are the measurements EGLE publishes for Baldwins Lake, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
Moderate clarity, visible to about 8 ft. TSI 47.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 8ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | No reading The nutrient that most limits algae growth in freshwater. More phosphorus, more algae potential. | |
| Chlorophyll-a (algae) | No reading The green pigment in algae — a direct measure of how much algae is in the water. | |
| Trophic state (TSI)Carlson's 0–100 index of how much algae a lake can support, from clarity, phosphorus and chlorophyll-a. | 47 | Mesotrophic OligotrophicMesotrophicEutrophicHypereutrophic |
Moderate nutrients, good water quality
Ask about Baldwins Lake
Answers come straight from the public measurements and survey records on this page.
Lake Details
Max depth
55 ft
Surface area
262 acres
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Fish Species
Click a species to see every lake where it is documented.
Fishing Baldwins Lake
Water Quality Trend: Improving
Based on 5 years of monitoring (2019–2023).
Water clarity
Improving5 years
Phosphorus
Worsening+1.4 µg/L/yr4 years
Chlorophyll-a
Improving-0.35 µg/L/yr3 years
EPA Impairment Status
Baldwins Lake is officially listed as impaired under Clean Water Act §303(d) in the 2024 EPA reporting cycle (IR category 5).
Causes of impairment
Designated uses not supporting: Aquatic life.
Source: EPA ATTAINS assessment unit MI040500011303-05 · Official waterbody report
Nearby Lakes in Cass County
Frequently asked questions about Baldwins Lake
Where is Baldwins Lake?
- Baldwins Lake is a lake in Cass County, Michigan. Its water-quality measurements are published by EGLE and shown on this page as reported.
What is the water quality of Baldwins Lake?
- Baldwins Lake in Cass County, Michigan has water-quality measurements published by EGLE, shown here as reported. Water clarity: 8 ft visibility. Maximum depth: 55 ft. Surface area: 262.4 acres.
Is Baldwins Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Baldwins Lake is listed impaired under Clean Water Act §303(d) (IR 5) for oxygen depletion (low DO). Check local advisories before you swim.
How deep is Baldwins Lake?
- Baldwins Lake has a maximum depth of 55 feet. The lake covers 262.4 acres.
What fish are in Baldwins Lake?
- Fish species found in Baldwins Lake include Blackchin shiner, Blacknose shiner, Blackside darter, Blackstripe topminnow, Bluegill, Bluntnose minnow, Brook silverside, Central stoneroller, Common carp, Creek chub, Golden redhorse, Grass pickerel, Green sunfish, Hornyhead chub, Iowa darter, Johnny darter, Lake chubsucker, Lake herring, Largemouth bass, Longnose gar, Mimic shiner, Northern logperch, Northern longear sunfish, Pumpkinseed, Rainbow darter, Redear sunfish, Rock bass, Sand shiner, Smallmouth bass, Spotted sucker, Striped shiner, Western banded killifish, Yellow perch. Baldwins Lake is located in Cass County, Michigan.
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Where this data comes from
24 measurements from 1 monitoring station, 2019–2022. Retrieved from the EPA Water Quality Portal on 2026-08-26.
Collected and reported by
- North American Lake Management Society
NALMS24 samples · 2019–2022
Monitoring station identifiers (1)
EPA condition classes from the National Lakes Assessment (EPA 841-R-24-006, Table 6-3), applied by ecoregion. See where the data comes from and data sources.
Other records on this page
Impairment status from EPA ATTAINS 303(d) database