Long Lake
Benzie County, Michigan327 acresView mapDirections
EGLE publishes the water-quality measurements for Long Lake. Here is what has been measured.
- Limited data
Long Lake in Benzie County, Michigan has water-quality measurements published by EGLE, shown here as reported. Water clarity: 9 ft visibility. Surface area: 326.8 acres.
Long Lake is a 327-acre lake in Benzie County, Michigan. Overall water quality is improving over recent sampling years. The lake supports 40 documented fish species including Blackchin shiner, Blacknose shiner, and Blackside darter.
Source: EPA Water Quality Portal sampling records, EGLE, last sampled 2022-09-30. Methodology: how these readings are compared.
What Long Lake is good for
From access and monitoring records, not editorial picks.
- Fishing40 species recorded
Swimming conditions
No readingLimited data
Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Whether Long 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 Long Lake
These are the measurements EGLE publishes for Long 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 9 ft. TSI 45.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 9ft | 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. | 45 | Mesotrophic OligotrophicMesotrophicEutrophicHypereutrophic |
Moderate nutrients, good water quality
Ask about Long Lake
Answers come straight from the public measurements and survey records on this page.
Lake Details
Surface area
327 acres
No bathymetric survey has been published for Long Lake, so its depth is not documented here.
Stays via Stay22
Stays near Long Lake
Compare lakeside cabins, hotels, and vacation rentals near Long Lake in Benzie 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.
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Fish Species
Click a species to see every lake where it is documented.
Fishing Long Lake
Water Quality Trend: Improving
Based on 4 years of monitoring (2019–2023).
Water clarity
Improving4 years
Phosphorus
Stable0 µg/L/yr3 years
Chlorophyll-a
Improving-2.93 µg/L/yr4 years
Nearby Lakes in Benzie County
Frequently asked questions about Long Lake
Where is Long Lake?
- Long Lake is a lake in Benzie County, Michigan. Its water-quality measurements are published by EGLE and shown on this page as reported.
What is the water quality of Long Lake?
- Long Lake in Benzie County, Michigan has water-quality measurements published by EGLE, shown here as reported. Water clarity: 9 ft visibility. Surface area: 326.8 acres.
Is Long Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
What fish are in Long Lake?
- Fish species found in Long Lake include Blackchin shiner, Blacknose shiner, Blackside darter, Blackstripe topminnow, Bluegill, Bluntnose minnow, Brook silverside, Brown bullhead, Central mudminnow, Central stoneroller, Creek chub, Golden redhorse, Golden shiner, Grass pickerel, Green sunfish, Hornyhead chub, Iowa darter, Johnny darter, Lake herring, Lake whitefish, Largemouth bass, Longnose gar, Mimic shiner, Northern logperch, Northern longear sunfish, Northern pearl dace, Northern pike, Pumpkinseed, Rainbow trout, Rock bass, Sand shiner, Smallmouth bass, Spotted gar, Striped shiner, Walleye, Warmouth, Western banded killifish, White sucker, Yellow bullhead, Yellow perch. Long Lake is located in Benzie County, Michigan.
Explore Long Lake across LakeQuality
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Planning a trip around Sleeping Bear Dunes?
Long Lake is about 18 miles from Sleeping Bear Dunes National Lakeshore. Crowds there swing hard by season, so the month you pick changes both how busy the park is and what lodging costs.
Best time to visit Sleeping Bear Dunes →More lakes in Michigan
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Where this data comes from
29 measurements from 1 monitoring station, 2019–2022. Retrieved from the EPA Water Quality Portal on 2026-08-26.
Collected and reported by
- North American Lake Management Society
NALMS29 samples · 2019–2022
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.