Lobdell Lake
Genesee County, Michigan416 acresView mapDirections
Not enough samples to grade — the only measurement available is water clarity, which is not a water-quality indicator on its own — EPA's National Lakes Assessment does not grade clarity. No letter yet. Here is what we do have.
- Impaired · Mercury
- Round Goby
- 70 ft max depth
- Public access
- Limited data
Lobdell Lake in Genesee County, Michigan is not rated for water quality — its monitoring record does not meet the evidence bar. Water clarity: 9 ft visibility. Phosphorus: 13 µg/L. Maximum depth: 70 ft. Surface area: 416 acres.
- Clarity
- 9 ft
- Max depth
- 70 ft
- Area
- 416 acres
- Public access
- Yes
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Watch Lobdell Lake’s letter
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Free interactive depth-contour map of Lobdell Lake, reaching a maximum surveyed depth of 70 ft. Toggle Depth contours to overlay the bathymetric survey lines. Contour data from Michigan DNR.
Why Lobdell Lake has no grade
We grade a lake only when the monitoring record supports a letter: at least three phosphorus or chlorophyll-a samples in the last ten years, scored against EPA National Lakes Assessment thresholds for this lake’s ecoregion. For Lobdell Lake, the only measurement available is water clarity, which is not a water-quality indicator on its own — EPA's National Lakes Assessment does not grade clarity. Sampling here has recorded water clarity and phosphorus, but not algae (chlorophyll-a).
Not Rated is not an F. It is EPA Integrated Reporting Category 3 — insufficient information. The water here may be excellent or poor; nobody has measured enough of it to say. Everything below that has been measured is still reported on this page.
Sampling is run by EGLE and volunteer programs, and published through the EPA Water Quality Portal. Read the full grading methodology.
Lobdell Lake is a 416-acre lake in Genesee County, Michigan with a maximum depth of 70 feet. Limited fish-species data available. Public access is available.
Source: EPA Water Quality Portal sampling records, EGLE, last sampled 2023-09-18. Grade methodology: LakeQuality methodology.
What Lobdell Lake is good for
From access and monitoring records, not editorial picks.
- Deep water70 ft surveyed max depth
Swimming Safety
Not ratedLimited data
The letter is not a swimming clearance. Lobdell Lake is listed impaired under Clean Water Act §303(d) (IR 4A) for mercury, pCBs. Check local advisories before you swim.
Water quality measurements for Lobdell Lake
These readings exist but are not enough for an A–F grade — see why.
Moderate clarity, visible to about 9 ft. Phosphorus 13 µg/L. TSI 43.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 9 ft | Not graded |
| Phosphorus | 13 µg/L | Not graded |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 43 | Mesotrophic |
Moderate nutrients, good water quality
Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | 70 ft |
| Surface Area | 416 acres |
| Public Access | Yes |
Lake Size & Watershed
Size, shoreline, and watershed area from HydroLAKES (HydroSHEDS).
Fishing Lobdell Lake
Invasive & Introduced Species
Red chips are ecologically harmful invasive species. Gray chips are stocked or introduced fish that aren't a current ecological concern.
Source: USGS Nonindigenous Aquatic Species (NAS) Database. Hover a chip to see scientific name, ecological context, status, and first-observed year.
Reservoir Info (USACE NID)
Lobdell Lake is a man-made reservoir impounded by the Argentine Dam (completed 1929), built primarily for recreation on the North Ore Creek; earth-type dam, 17 ft tall and 280 ft long.
- Surface area
- 416 ac
- Normal storage
- 30,000 ac-ft
- Max storage
- 35,000 ac-ft
- Drainage area
- 92 sq mi
- Hazard class
- Significant
- Owner
- Argentine Township
Source: USACE National Inventory of Dams, NID ID MI00117 · Operator website · Matched by proximity (0.72 km)
EPA Impairment Status
Lobdell Lake is officially listed as impaired under Clean Water Act §303(d) in the 2024 EPA reporting cycle (IR category 4A).
Causes of impairment
A Total Maximum Daily Load (TMDL) plan has been approved.
Source: EPA ATTAINS assessment unit MI040802030109-05 · Official waterbody report · Matched by proximity (0.65 km)
Regulated Pollution Sources Nearby
1 EPA-permitted facility operate within about 5 miles of Lobdell Lake under Clean Water Act (NPDES) discharge permits.
- Genesee Co #7-Argentine WwslByron · 2.9 mi away · NPDES MI0055026
Facilities permitted to discharge under the Clean Water Act within ~5 miles; proximity does not by itself mean a facility affects this lake. Source: EPA ECHO (ICIS-NPDES), as of 2026-07.
Nearby Lakes in Genesee County
Frequently asked questions about Lobdell Lake
Where is Lobdell Lake?
- Lobdell Lake is a lake in Genesee County, Michigan. LakeQuality has not rated this lake (UNRATED) — the only measurement available is water clarity, which is not a water-quality indicator on its own — EPA's National Lakes Assessment does not grade clarity.
What is the water quality grade for Lobdell Lake?
- Lobdell Lake in Genesee County, Michigan is not rated for water quality — its monitoring record does not meet the evidence bar. Water clarity: 9 ft visibility. Phosphorus: 13 µg/L. Maximum depth: 70 ft. Surface area: 416 acres.
Is Lobdell Lake safe to swim in?
- The letter is not a swimming clearance. Lobdell Lake is listed impaired under Clean Water Act §303(d) (IR 4A) for mercury, pCBs. Check local advisories before you swim.
How deep is Lobdell Lake?
- Lobdell Lake has a maximum depth of 70 feet. The lake covers 416 acres.
Explore Lobdell Lake across LakeQuality
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Where this data comes from
8 measurements from 1 monitoring station, 2023. Retrieved from the EPA Water Quality Portal on 2026-08-26.
Collected and reported by
- Michigan EGLE - MiCorps
21MICH_MICORPS8 samples · 2023
Analytical methods
- Phosphorus by Colorimetry
Monitoring station identifiers (1)
Grade thresholds from the EPA National Lakes Assessment (EPA 841-R-24-006, Table 6-3), applied by ecoregion. See how grades are calculated and data sources.
Other records on this page
Impairment status from EPA ATTAINS 303(d) database
Regulated discharger data from EPA ECHO (ICIS-NPDES)
Lake size & watershed from HydroLAKES (HydroSHEDS)