Jewell Lake
Alcona County, Michigan184 acresView mapDirections
EGLE publishes the water-quality measurements for Jewell Lake. Here is what has been measured.
- Mesotrophic
- 30 ft max depth
- Limited data
Jewell Lake in Alcona County, Michigan has water-quality measurements published by EGLE, shown here as reported. Water clarity: 10.5 ft visibility. Phosphorus: 11 µg/L. Chlorophyll-a (algae): 4.3 µg/L. Maximum depth: 30 ft. Surface area: 184.4 acres.
Jewell Lake is a 184-acre mesotrophic lake in Alcona County, Michigan with a maximum depth of 30 feet. Compared to the 2 other monitored lakes in Alcona County, Jewell Lake ranks #3 for water quality.
Source: EPA Water Quality Portal sampling records, EGLE, last sampled 2022-09-11. Methodology: how these readings are compared.
Jewell Lake covers about 180 acres in Alcona County. For a place on the water, look through cabin and lake-house rentals near Jewell Lake on Vrbo. For a hotel or motel room, Booking.com and Expedia both search around the lake.
What Jewell Lake is good for
From access and monitoring records, not editorial picks.
- Clear water10.5 ft of visibility
- Deep water30 ft surveyed max depth
Swimming conditions
Readings onlyLimited data
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 Jewell 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 Jewell Lake
These are the measurements EGLE publishes for Jewell Lake, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
Good clarity, visible to about 10.5 ft. Phosphorus 11 µg/L. Chlorophyll-a 4.3 µg/L. TSI 42.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 10.5ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | 11µg/L | Measured, not scored The nutrient that most limits algae growth in freshwater. More phosphorus, more algae potential. |
| Chlorophyll-a (algae) | 4.3µg/L | Good GoodFairPoor |
| Trophic state (TSI)Carlson's 0–100 index of how much algae a lake can support, from clarity, phosphorus and chlorophyll-a. | 42 | Mesotrophic OligotrophicMesotrophicEutrophicHypereutrophic |
Moderate nutrients, good water quality
Ask about Jewell Lake
Answers come straight from the public measurements and survey records on this page.
Water Temperature
Jewell Lake typically sits around 69°F at the surface in September. Summer average is about 72°F. Usually warmest in Aug (about 73°F) and coldest in Sep (about 69°F). These are typical values by month — not a live reading.
Column height runs from this lake’s coldest month (69°F) to its warmest (73°F).
Typical surface water temperature by month, from 36 field readings (2022–2022) via the EPA Water Quality Portal. See the full Jewell Lake water temperature breakdown →
Lake Details
Max depth
30 ft
Surface area
184 acres
Stays via Stay22
Stays near Jewell Lake
Compare lakeside cabins, hotels, and vacation rentals near Jewell Lake in Alcona 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 Jewell Lake
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Fishing Jewell Lake
Nearby Lakes in Alcona County
Frequently asked questions about Jewell Lake
Where is Jewell Lake?
- Jewell Lake is a lake in Alcona County, Michigan. Its water-quality measurements are published by EGLE and shown on this page as reported.
What is the water quality of Jewell Lake?
- Jewell Lake in Alcona County, Michigan has water-quality measurements published by EGLE, shown here as reported. Water clarity: 10.5 ft visibility. Phosphorus: 11 µg/L. Chlorophyll-a (algae): 4.3 µg/L. Maximum depth: 30 ft. Surface area: 184.4 acres.
Is Jewell 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 Jewell Lake?
- Jewell Lake typically sits around 69°F at the surface in September, from 36 EPA Water Quality Portal field readings (2022–2022). That is a typical value for the month, not a live reading.
How deep is Jewell Lake?
- Jewell Lake has a maximum depth of 30 feet. The lake covers 184.4 acres.
Explore Jewell Lake across LakeQuality
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Where this data comes from
17 measurements from 1 monitoring station, 2022. Retrieved from the EPA Water Quality Portal on 2026-08-26.
Collected and reported by
- Michigan EGLE - MiCorps
21MICH_MICORPS17 samples · 2022
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.