Round Lake
Emmet County, Michigan353 acresView mapDirections
EGLE publishes the water-quality measurements for Round Lake. Here is what has been measured.
- 12 ft max depth
- Public access
- Limited data
Round Lake in Emmet County, Michigan has water-quality measurements published by EGLE, shown here as reported. Phosphorus: 9.8 µg/L. Chlorophyll-a (algae): 3.1 µg/L. Maximum depth: 12 ft. Surface area: 353.2 acres.
Free interactive depth-contour map of Round Lake, reaching a maximum surveyed depth of 12 ft. Toggle Depth contours to overlay the bathymetric survey lines. Contour data from Michigan DNR.
Round Lake is a 353-acre lake in Emmet County, Michigan with a maximum depth of 12 feet. Overall water quality is improving over recent sampling years. The lake supports 2 documented fish species including Iowa darter and Largemouth bass. Public access is available with 1 public boat landing.
Source: EPA Water Quality Portal sampling records, EGLE, last sampled 2021-10-07. Methodology: how these readings are compared.
What Round Lake is good for
From access and monitoring records, not editorial picks.
- Boat launch1 documented ramp
Swimming conditions
No readingLimited data
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.
No clarity data. Phosphorus 9.8 µg/L. Chlorophyll-a 3.1 µg/L. TSI 39.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | No reading How deep a black-and-white disk stays visible from the surface. Higher is clearer. | |
| Total phosphorus | 9.8µg/L | Measured, not scored The nutrient that most limits algae growth in freshwater. More phosphorus, more algae potential. |
| Chlorophyll-a (algae) | 3.1µg/L | Measured, not scored 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. | 39 | Oligotrophic OligotrophicMesotrophicEutrophicHypereutrophic |
Low nutrients, clear water. No reading is a swimming clearance.
Ask about Round Lake
Answers come straight from the public measurements and survey records on this page.
Water Temperature
Round Lake typically sits around 59°F at the surface in October. Summer average is about 75°F. Usually warmest in Jul (about 75°F) and coldest in Feb (about 41°F). These are typical values by month — not a live reading.
Column height runs from this lake’s coldest month (41°F) to its warmest (75°F).
Typical surface water temperature by month, from 15 field readings (2010–2021) via the EPA Water Quality Portal. See the full Round Lake water temperature breakdown →
Lake Details
Max depth
12 ft
Surface area
353 acres
Public access
Yes
Listed by EGLE
Lake Size & Watershed
Watershed (drainage) area
10 sq mi
HydroLAKES / HydroSHEDS
Shoreline
3.2 mi
HydroLAKES / HydroSHEDS
Elevation
587 ft
Size, shoreline, and watershed area from HydroLAKES (HydroSHEDS).
Recreation & Access
- Round LakePublic
Named access points in the USGS National Boat Ramps inventory, within about 3 miles. More lakes with boat ramps
Stays via Stay22
Stays near Round Lake
Compare lakeside cabins, hotels, and vacation rentals near Round Lake in Emmet 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.
Top-rated places to stay near Round Lake
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Follow Round Lake’s readings
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Fish Species
Click a species to see every lake where it is documented.
Fishing Round Lake
Water quality readings over time
3 seasons of samples on record (2018–2021). Calling a direction takes at least 4 years of the same measurement.
Phosphorus
Improving-1.83 µg/L/yr3 years
Chlorophyll-a
Improving-2.93 µg/L/yr3 years
Regulated Pollution Sources Nearby
2 EPA-permitted facilities operate within about 5 miles of Round Lake under Clean Water Act (NPDES) discharge permits.
- Zequanox Application-Round LakePetoskey · 0.5 mi away · NPDES MI0060039
- Harbor SpringsHarbor Springs · 2.4 mi away · NPDES MIG960018
Facilities permitted to discharge under the Clean Water Act within ~5 miles; proximity does not by itself mean a facility affects this lake. Source: EPA ECHO (ICIS-NPDES), as of 2026-07.
Nearby Lakes in Emmet County
Frequently asked questions about Round Lake
Where is Round Lake?
- Round Lake is a lake in Emmet 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 Emmet County, Michigan has water-quality measurements published by EGLE, shown here as reported. Phosphorus: 9.8 µg/L. Chlorophyll-a (algae): 3.1 µg/L. Maximum depth: 12 ft. Surface area: 353.2 acres.
Is Round Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
What is the water temperature of Round Lake?
- Round Lake typically sits around 59°F at the surface in October, from 15 EPA Water Quality Portal field readings (2010–2021). That is a typical value for the month, not a live reading.
How deep is Round Lake?
- Round Lake has a maximum depth of 12 feet. The lake covers 353.2 acres.
What fish are in Round Lake?
- Fish species found in Round Lake include Iowa darter, Largemouth bass. Round Lake is located in Emmet County, Michigan.
Are there boat ramps on Round Lake?
- Round Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Round Lake. Public access is listed as yes.
Can I fish at Round Lake?
- Round Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. Seasons, size and bag limits, and whether you need a license are set by Michigan's fish and wildlife agency, so check its current regulations before you go.
Explore Round Lake across LakeQuality
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Where this data comes from
14 measurements from 1 monitoring station, 2018–2021. Retrieved from the EPA Water Quality Portal on 2026-08-26.
Collected and reported by
- Little Traverse Bay Bands of Odawa Indians
LTBBWATR_WQX14 samples · 2018–2021
Analytical methods
- Total Phosphorus After Block Digestion
- 4500 P F ~ Phosphorus in Water by Colorimetry Automated Ascorbic Acid Method
- 10200 H ~ Chlorophyll a-b-c Determination
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
Regulated discharger data from EPA ECHO (ICIS-NPDES)
Lake size & watershed from HydroLAKES (HydroSHEDS)
Named boat-access points from the USGS National Boat Ramps inventory