Selkirk Lake
Allegan County, Michigan92 acresView mapDirections
EGLE publishes the water-quality measurements for Selkirk Lake. Here is what has been measured.
- Impaired · Mercury
- 10 ft mean depth (modelled)
- Public access
- Limited data
Selkirk Lake in Allegan County, Michigan has water-quality measurements published by EGLE, shown here as reported. Phosphorus: 17 µg/L. Surface area: 92 acres.
Selkirk Lake is a 92-acre lake in Allegan County, Michigan with an estimated average depth of about 10 feet. Overall water quality is declining over recent sampling years. Limited fish-species data available. Public access is available.
Source: EPA Water Quality Portal sampling records, EGLE, last sampled 2018-09-24. Methodology: how these readings are compared.
Swimming conditions
No readingLimited data
Nutrient and algae readings are not a swimming clearance. Selkirk Lake is listed impaired under Clean Water Act §303(d) (IR 4A) for mercury. Check local advisories before you swim.
Whether Selkirk 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 Selkirk Lake
These are the measurements EGLE publishes for Selkirk Lake, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
No clarity data. Phosphorus 17 µg/L. TSI 45.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | No reading How deep a black-and-white disk stays visible from the surface. Higher is clearer. | |
| Total phosphorus | 17µg/L | Measured, not scored 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 Selkirk Lake
Answers come straight from the public measurements and survey records on this page.
Lake Details
Mean depth
~10 ft est.
Surface area
92 acres
Public access
Yes
Listed by EGLE
Depth marked “est.” is a modeled estimate from HydroLAKES, not a measured survey. Michigan has not published bathymetry for Selkirk Lake.
Lake Size & Watershed
Watershed (drainage) area
1 sq mi
HydroLAKES / HydroSHEDS
Mean depth
~10 ft est.
Modelled from terrain, not sounded
Shoreline
2.3 mi
HydroLAKES / HydroSHEDS
Elevation
804 ft
Size, shoreline, and watershed area from HydroLAKES (HydroSHEDS). Mean depth here is modelled, not surveyed — HydroLAKES v1.0 estimates lake depth from surrounding terrain rather than from soundings. Treat it as an approximation, and prefer a state bathymetric survey where one exists.
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Fishing Selkirk Lake
Water Quality Trend: Worsening
Based on 6 years of monitoring (2018–2025).
Water clarity
Worsening2 years
Phosphorus
Worsening+24.79 µg/L/yr4 years
EPA Impairment Status
Selkirk Lake is officially listed as impaired under Clean Water Act §303(d) in the 2024 EPA reporting cycle (IR category 4A).
Causes of impairment
Designated uses not supporting: Fish consumption.
A Total Maximum Daily Load (TMDL) plan has been approved.
Source: EPA ATTAINS assessment unit MI040500030803-01 · Official waterbody report
Nearby Lakes in Allegan County
Frequently asked questions about Selkirk Lake
Where is Selkirk Lake?
- Selkirk Lake is a lake in Allegan County, Michigan. Its water-quality measurements are published by EGLE and shown on this page as reported.
What is the water quality of Selkirk Lake?
- Selkirk Lake in Allegan County, Michigan has water-quality measurements published by EGLE, shown here as reported. Phosphorus: 17 µg/L. Surface area: 92 acres.
Is Selkirk Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Selkirk Lake is listed impaired under Clean Water Act §303(d) (IR 4A) for mercury. Check local advisories before you swim.
How deep is Selkirk Lake?
- No published bathymetric survey covers Selkirk Lake, so its depth has not been measured. The HydroLAKES global model estimates an average depth of about 10 feet, but that is a modelled estimate derived from surrounding terrain rather than a measurement on the water, so treat it as approximate. The lake covers 92 acres.
Can I fish at Selkirk Lake?
- Public access to Selkirk Lake is listed as yes on the lake record. 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
1 measurement from 1 monitoring station, 2018. Retrieved from the EPA Water Quality Portal on 2026-08-26.
Collected and reported by
- Michigan EGLE - MiCorps
21MICH_MICORPS1 sample · 2018
Analytical methods
- Phosphorus by Colorimetry
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
Impairment status from EPA ATTAINS 303(d) database
Lake size & watershed from HydroLAKES (HydroSHEDS)