Long Lake North Central Basin; Plainfield Township is a mesotrophic lake in Iosco County, Michigan. Water quality is graded B based on 1 sampling years through 2023. Limited fish-species data available. Public access is available with 2 public boat landings. Compared to the 7 other monitored lakes in Iosco County, Long Lake North Central Basin; Plainfield Township ranks #6 for water quality.
Source: EPA Water Quality Portal sampling records, Michigan DNR, last sampled 2023-09-03. Grade methodology: LakeGrade methodology.
Watch Long Lake North Central Basin; Plainfield Township water quality
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Swimming Safety
Good for swimming, clear water with low algae levels
Water Quality Grade: B, Good
Good clarity, visible to about 13 ft. Trophic State Index: 40.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 13 ft | B |
| Phosphorus | No data | |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 40 | Mesotrophic |
Moderate nutrients, good water quality
Where to stay near Long Lake North Central Basin; Plainfield Township
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Fishing Long Lake North Central Basin; Plainfield Township
Recreation & Access
Location & Depth Map
Free interactive depth-contour map of Long Lake North Central Basin; Plainfield Township, reaching a maximum surveyed depth of 62 ft. Toggle Depth contours to overlay the bathymetric survey lines. Contour data from Michigan DNR.
County Ranking
Ranked #6 of 8 lakes in Iosco County
Cleaner Lakes Within 30 Miles
Long Lake North Central Basin; Plainfield Township holds Grade B. 3 nearby lakes hold higher grades.
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Moderate nutrients, good water quality
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Other Grade B Lakes in Michigan
Ogemaw County · Clarity: 10 ft
Oscoda County · Clarity: 14.5 ft
Alcona County · Clarity: 10.5 ft
Montmorency County · Clarity: 13 ft
Gladwin County · Clarity: 10 ft
Crawford County · Clarity: 6.5 ft
Mesotrophic Lakes in Michigan
More records, surveys & data sources
Lake Size & Watershed
Size, shoreline, and watershed area from HydroLAKES (HydroSHEDS). Mean depth is a modeled estimate.
Data Sources
Water quality data from the EPA Water Quality Portal
Lake size & watershed from HydroLAKES (HydroSHEDS)
Grading methodology based on Metropolitan Council standards
Public boat-access points from the USGS National Boat Ramps inventory
Most recent sample: 2023-09-03
Monitoring stations: 1