Armstrong Lake
Leelanau County, Michigan41 acresView mapDirections
EGLE publishes the water-quality measurements for Armstrong Lake. Here is what has been measured.
- Public access
- Limited data
Armstrong Lake in Leelanau County, Michigan has water-quality measurements published by EGLE, shown here as reported. Water clarity: 11.5 ft visibility. Surface area: 40.8 acres.
Armstrong Lake is a 41-acre lake in Leelanau County, Michigan. Limited fish-species data available. Public access is available with 1 public boat landing.
Source: EPA Water Quality Portal sampling records, EGLE, last sampled 2019-09-08. Methodology: how these readings are compared.
What Armstrong Lake is good for
From access and monitoring records, not editorial picks.
- Clear water11.5 ft of visibility
- 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 Armstrong 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 Armstrong Lake
These are the measurements EGLE publishes for Armstrong 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 11.5 ft. TSI 42.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 11.5ft | 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. | 42 | Mesotrophic OligotrophicMesotrophicEutrophicHypereutrophic |
Moderate nutrients, good water quality
Ask about Armstrong Lake
Answers come straight from the public measurements and survey records on this page.
Lake Details
Surface area
41 acres
Public access
Yes
Listed by EGLE
No bathymetric survey has been published for Armstrong Lake, so its depth is not documented here.
Recreation & Access
- Armstrong LakePublic
Named access points in the USGS National Boat Ramps inventory, within about 3 miles. More lakes with boat ramps
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Fishing Armstrong Lake
Nearby Lakes in Leelanau County
Frequently asked questions about Armstrong Lake
Where is Armstrong Lake?
- Armstrong Lake is a lake in Leelanau County, Michigan. Its water-quality measurements are published by EGLE and shown on this page as reported.
What is the water quality of Armstrong Lake?
- Armstrong Lake in Leelanau County, Michigan has water-quality measurements published by EGLE, shown here as reported. Water clarity: 11.5 ft visibility. Surface area: 40.8 acres.
Is Armstrong Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Are there boat ramps on Armstrong Lake?
- Armstrong Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Armstrong Lake. Public access is listed as yes.
Can I fish at Armstrong Lake?
- Armstrong 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.
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Where this data comes from
8 measurements from 1 monitoring station, 2019. Retrieved from the EPA Water Quality Portal on 2026-08-26.
Collected and reported by
- North American Lake Management Society
NALMS8 samples · 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.
Other records on this page
Named boat-access points from the USGS National Boat Ramps inventory