Lancelot Lake
Gladwin County, Michigan250 acresView mapDirections
EGLE publishes the water-quality measurements for Lancelot Lake. Here is what has been measured.
- Limited data
Lancelot Lake in Gladwin County, Michigan has water-quality measurements published by EGLE, shown here as reported. Water clarity: 8 ft visibility. Surface area: 250 acres.
Lancelot Lake is a 250-acre lake in Gladwin County, Michigan. Overall water quality is improving over recent sampling years.
Source: EPA Water Quality Portal sampling records, EGLE, last sampled 2019-09-09. Methodology: how these readings are compared.
Swimming conditions
No readingLimited data
Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Whether Lancelot 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 Lancelot Lake
These are the measurements EGLE publishes for Lancelot 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 Lancelot Lake
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Lake Details
Surface area
250 acres
No bathymetric survey has been published for Lancelot Lake, so its depth is not documented here.
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Fishing Lancelot Lake
Water Quality Trend: Improving
Based on 7 years of monitoring (2016–2023).
Water clarity
Improving6 years
Phosphorus
Worsening+0.43 µg/L/yr7 years
Chlorophyll-a
Improving-0.08 µg/L/yr7 years
Reservoir Info (USACE NID)
Lancelot Lake is a man-made reservoir impounded by the Lake Lancelot Dam (completed 1976), built primarily for recreation on the Tributary to Sugar River; earth-type dam, 17 ft tall and 1,400 ft long.
- Surface area
- 250 ac
- Normal storage
- 1,950 ac-ft
- Max storage
- 2,100 ac-ft
- Drainage area
- 4.9 sq mi
- Hazard class
- Low
- Owner
- Gladwin County Drain Commissioner
Source: USACE National Inventory of Dams, NID ID MI00488 · Operator website · Matched by proximity (0.46 km)
Nearby Lakes in Gladwin County
Frequently asked questions about Lancelot Lake
Where is Lancelot Lake?
- Lancelot Lake is a lake in Gladwin County, Michigan. Its water-quality measurements are published by EGLE and shown on this page as reported.
What is the water quality of Lancelot Lake?
- Lancelot Lake in Gladwin County, Michigan has water-quality measurements published by EGLE, shown here as reported. Water clarity: 8 ft visibility. Surface area: 250 acres.
Is Lancelot Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
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Where this data comes from
34 measurements from 1 monitoring station, 2016–2019. Retrieved from the EPA Water Quality Portal on 2026-08-26.
Collected and reported by
- Michigan EGLE - MiCorps
21MICH_MICORPS34 samples · 2016–2019
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.