Round Lake
Shiawassee County, Michigan11 acresView mapDirections
EGLE publishes the water-quality measurements for Round Lake. Here is what has been measured.
- Eutrophic
Round Lake in Shiawassee County, Michigan has water-quality measurements published by EGLE, shown here as reported. Water clarity: 6 ft visibility. Phosphorus: 32 µg/L. Chlorophyll-a (algae): 19 µg/L. Surface area: 11.2 acres.
Round Lake is a 11-acre productive, nutrient-rich eutrophic lake in Shiawassee County, Michigan. Overall water quality is declining over recent sampling years. The lake supports 37 documented fish species including Black bullhead, Black crappie, and Blackchin shiner. Compared to the 3 other monitored lakes in Shiawassee County, Round Lake ranks #4 for water quality.
Source: EPA Water Quality Portal sampling records, EGLE, last sampled 2023-09-15. Methodology: how these readings are compared.
What Round Lake is good for
From access and monitoring records, not editorial picks.
- Fishing37 species recorded
Swimming conditions
Readings onlyAlgae risk
Based on clarity and algae readings from past sampling — there is no live water temperature and a current cyanobacteria reading for this lake. Check your state or county health department before you swim.
Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Whether Round 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 Round Lake
These are the measurements EGLE publishes for Round Lake, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
Murky, only visible to about 6 ft. Phosphorus 32 µg/L. Chlorophyll-a 19 µg/L. TSI 55.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 6ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | 32µg/L | Fair GoodFairPoor |
| Chlorophyll-a (algae) | 19µg/L | Poor GoodFairPoor |
| Trophic state (TSI)Carlson's 0–100 index of how much algae a lake can support, from clarity, phosphorus and chlorophyll-a. | 55 | Eutrophic OligotrophicMesotrophicEutrophicHypereutrophic |
High nutrients, frequent algae, reduced clarity
Ask about Round Lake
Answers come straight from the public measurements and survey records on this page.
Lake Details
Surface area
11 acres
No bathymetric survey has been published for Round Lake, so its depth is not documented here.
Stays via Stay22
Stays near Round Lake
Compare lakeside cabins, hotels, and vacation rentals near Round Lake in Shiawassee County, Michigan — live availability and prices for your trip. Switch the map to Satellite to see the lake and how close each stay is to the water. The water-quality readings cover nutrients and algae, not lodging. Cabins and rentals around Round Lake are listed below.
Top-rated places to stay near Round Lake
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Fish Species
Click a species to see every lake where it is documented.
Fishing Round Lake
Water Quality Trend: Worsening
Based on 5 years of monitoring (2018–2023).
Water clarity
Improving5 years
Phosphorus
Worsening+4.88 µg/L/yr5 years
Chlorophyll-a
Worsening+1.84 µg/L/yr4 years
Nearby Lakes in Shiawassee County
Frequently asked questions about Round Lake
Where is Round Lake?
- Round Lake is a lake in Shiawassee County, Michigan. Its water-quality measurements are published by EGLE and shown on this page as reported.
What is the water quality of Round Lake?
- Round Lake in Shiawassee County, Michigan has water-quality measurements published by EGLE, shown here as reported. Water clarity: 6 ft visibility. Phosphorus: 32 µg/L. Chlorophyll-a (algae): 19 µg/L. Surface area: 11.2 acres.
Is Round Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
What fish are in Round Lake?
- Fish species found in Round Lake include Black bullhead, Black crappie, Blackchin shiner, Blacknose shiner, Bluegill, Bluntnose minnow, Brassy minnow, Brook silverside, Brook stickleback, Central mudminnow, Common shiner, Fathead minnow, Golden shiner, Grass pickerel, Green sunfish, Iowa darter, Johnny darter, Lake chubsucker, Largemouth bass, Longnose gar, Muskellunge, Northern logperch, Northern longear sunfish, Northern pike, Pumpkinseed, Redear sunfish, Rock bass, Rosyface shiner, Smallmouth bass, Spotfin shiner, Spottail shiner, Spotted gar, Tadpole madtom, Western banded killifish, White sucker, Yellow bullhead, Yellow perch. Round Lake is located in Shiawassee County, Michigan.
Explore Round Lake across LakeQuality
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Where this data comes from
76 measurements from 1 monitoring station, 2021–2023. Retrieved from the EPA Water Quality Portal on 2026-08-26.
Collected and reported by
- Michigan EGLE - MiCorps
21MICH_MICORPS76 samples · 2021–2023
Analytical methods
- Phosphorus by Colorimetry
- 445.0 ~ EPA; Chlorophyll and Pheophytin in Algae by Fluorescence
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.